第72章 显示BMP图片及屏幕截图（图片放SD卡）
第七十二章 显示BMP图片及屏幕截图（图片放SD卡）
1. 硬件设计
参考LCD显示那一章
2. 软件设计
2.1 编程大纲
-
LCD显示驱动
-
SDIO驱动
-
bmp文件驱动
-
主函数测试
2.2 代码分析
2.2.1 LCD显示驱动
#include "ili9341_lcd.h"
#include "fonts.h"
//根据液晶扫描方向而变化的XY像素宽度
//调用ILI9341_GramScan函数设置方向时会自动更改
uint16_t LCD_X_LENGTH = ILI9341_LESS_PIXEL;
uint16_t LCD_Y_LENGTH = ILI9341_MORE_PIXEL;
//液晶屏扫描模式，本变量主要用于方便选择触摸屏的计算参数
//参数可选值为0-7
//调用ILI9341_GramScan函数设置方向时会自动更改
//LCD刚初始化完成时会使用本默认值
uint8_t LCD_SCAN_MODE = 6;
//保存液晶屏驱动ic的 ID
uint16_t lcdid = LCDID_UNKNOWN;
static sFONT *LCD_Currentfonts = &Font8x16; //英文字体
static uint16_t CurrentTextColor = BLACK;//前景色
static uint16_t CurrentBackColor = WHITE;//背景色
static void ILI9341_Delay ( __IO uint32_t nCount );
static void ILI9341_GPIO_Config ( void );
static void ILI9341_FSMC_Config ( void );
static void ILI9341_REG_Config ( void );
static void ILI9341_SetCursor ( uint16_t usX, uint16_t usY );
static __inline void ILI9341_FillColor ( uint32_t ulAmout_Point, uint16_t usColor );
static uint16_t ILI9341_Read_PixelData ( void );
/**
* @brief 向ILI9341写入命令
* @param usCmd :要写入的命令（表寄存器地址）
* @retval 无
*/
void ILI9341_Write_Cmd ( uint16_t usCmd )
{
* ( __IO uint16_t * ) ( FSMC_Addr_ILI9341_CMD ) = usCmd;
}
/**
* @brief 向ILI9341写入数据
* @param usData :要写入的数据
* @retval 无
*/
void ILI9341_Write_Data ( uint16_t usData )
{
* ( __IO uint16_t * ) ( FSMC_Addr_ILI9341_DATA ) = usData;
}
/**
* @brief 从ILI9341读取数据
* @param 无
* @retval 读取到的数据
*/
uint16_t ILI9341_Read_Data ( void )
{
return ( * ( __IO uint16_t * ) ( FSMC_Addr_ILI9341_DATA ) );
}
/**
* @brief 用于 ILI9341 简单延时函数
* @param nCount ：延时计数值
* @retval 无
*/
static void ILI9341_Delay ( __IO uint32_t nCount )
{
for ( ; nCount != 0; nCount -- );
}
/**
* @brief 初始化ILI9341的IO引脚
* @param 无
* @retval 无
*/
static void ILI9341_GPIO_Config ( void )
{
GPIO_InitTypeDef GPIO_InitStructure;
/* 使能FSMC对应相应管脚时钟*/
RCC_APB2PeriphClockCmd (
/*控制信号*/
ILI9341_CS_CLK|ILI9341_DC_CLK|ILI9341_WR_CLK|
ILI9341_RD_CLK |ILI9341_BK_CLK|ILI9341_RST_CLK|
/*数据信号*/
ILI9341_D0_CLK|ILI9341_D1_CLK| ILI9341_D2_CLK |
ILI9341_D3_CLK | ILI9341_D4_CLK|ILI9341_D5_CLK|
ILI9341_D6_CLK | ILI9341_D7_CLK|ILI9341_D8_CLK|
ILI9341_D9_CLK | ILI9341_D10_CLK|ILI9341_D11_CLK|
ILI9341_D12_CLK | ILI9341_D13_CLK|ILI9341_D14_CLK|
ILI9341_D15_CLK , ENABLE );
/* 配置FSMC相对应的数据线,FSMC-D0~D15 */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = ILI9341_D0_PIN;
GPIO_Init ( ILI9341_D0_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D1_PIN;
GPIO_Init ( ILI9341_D1_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D2_PIN;
GPIO_Init ( ILI9341_D2_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D3_PIN;
GPIO_Init ( ILI9341_D3_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D4_PIN;
GPIO_Init ( ILI9341_D4_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D5_PIN;
GPIO_Init ( ILI9341_D5_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D6_PIN;
GPIO_Init ( ILI9341_D6_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D7_PIN;
GPIO_Init ( ILI9341_D7_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D8_PIN;
GPIO_Init ( ILI9341_D8_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D9_PIN;
GPIO_Init ( ILI9341_D9_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D10_PIN;
GPIO_Init ( ILI9341_D10_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D11_PIN;
GPIO_Init ( ILI9341_D11_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D12_PIN;
GPIO_Init ( ILI9341_D12_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D13_PIN;
GPIO_Init ( ILI9341_D13_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D14_PIN;
GPIO_Init ( ILI9341_D14_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_D15_PIN;
GPIO_Init ( ILI9341_D15_PORT, & GPIO_InitStructure );
/* 配置FSMC相对应的控制线
* FSMC_NOE :LCD-RD
* FSMC_NWE :LCD-WR
* FSMC_NE1 :LCD-CS
* FSMC_A16 :LCD-DC
*/
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = ILI9341_RD_PIN;
GPIO_Init (ILI9341_RD_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_WR_PIN;
GPIO_Init (ILI9341_WR_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_CS_PIN;
GPIO_Init ( ILI9341_CS_PORT, & GPIO_InitStructure );
GPIO_InitStructure.GPIO_Pin = ILI9341_DC_PIN;
GPIO_Init ( ILI9341_DC_PORT, & GPIO_InitStructure );
/* 配置LCD复位RST控制管脚*/
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Pin = ILI9341_RST_PIN;
GPIO_Init ( ILI9341_RST_PORT, & GPIO_InitStructure );
/* 配置LCD背光控制管脚BK*/
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Pin = ILI9341_BK_PIN;
GPIO_Init ( ILI9341_BK_PORT, & GPIO_InitStructure );
}
/**
* @brief LCD FSMC 模式配置
* @param 无
* @retval 无
*/
static void ILI9341_FSMC_Config ( void )
{
FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure={0};
FSMC_NORSRAMTimingInitTypeDef readWriteTiming={0};
/* 使能FSMC时钟*/
RCC_AHBPeriphClockCmd ( RCC_AHBPeriph_FSMC, ENABLE );
//地址建立时间（ADDSET）为1个HCLK 2/72M=28ns
readWriteTiming.FSMC_AddressSetupTime = 0x01; //地址建立时间
//数据保持时间（DATAST）+ 1个HCLK = 5/72M=70ns
readWriteTiming.FSMC_DataSetupTime = 0x04; //数据建立时间
//选择控制的模式
//模式B,异步NOR FLASH模式，与ILI9341的8080时序匹配
readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_B;
/*以下配置与模式B无关*/
//地址保持时间（ADDHLD）模式A未用到
readWriteTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间
//设置总线转换周期，仅用于复用模式的NOR操作
readWriteTiming.FSMC_BusTurnAroundDuration = 0x00;
//设置时钟分频，仅用于同步类型的存储器
readWriteTiming.FSMC_CLKDivision = 0x00;
//数据保持时间，仅用于同步型的NOR
readWriteTiming.FSMC_DataLatency = 0x00;
FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAMx;
FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_NOR;
FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &readWriteTiming;
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &readWriteTiming;
FSMC_NORSRAMInit ( & FSMC_NORSRAMInitStructure );
/* 使能 FSMC_Bank1_NORSRAM4 */
FSMC_NORSRAMCmd ( FSMC_Bank1_NORSRAMx, ENABLE );
}
/**
* @brief 初始化ILI9341寄存器
* @param 无
* @retval 无
*/
static void ILI9341_REG_Config ( void )
{
lcdid = ILI9341_ReadID();
if(lcdid == LCDID_ILI9341)
{
/* Power control B (CFh) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xCF );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x81 );
ILI9341_Write_Data ( 0x30 );
/* Power on sequence control (EDh) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xED );
ILI9341_Write_Data ( 0x64 );
ILI9341_Write_Data ( 0x03 );
ILI9341_Write_Data ( 0x12 );
ILI9341_Write_Data ( 0x81 );
/* Driver timing control A (E8h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xE8 );
ILI9341_Write_Data ( 0x85 );
ILI9341_Write_Data ( 0x10 );
ILI9341_Write_Data ( 0x78 );
/* Power control A (CBh) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xCB );
ILI9341_Write_Data ( 0x39 );
ILI9341_Write_Data ( 0x2C );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x34 );
//ILI9341_Write_Data ( 0x02 );
ILI9341_Write_Data ( 0x06 ); //原来是0x02改为0x06可防止液晶显示白屏时有条纹的情况
/* Pump ratio control (F7h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xF7 );
ILI9341_Write_Data ( 0x20 );
/* Driver timing control B */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xEA );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x00 );
/* Frame Rate Control (In Normal Mode/Full Colors) (B1h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xB1 );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x1B );
/* Display Function Control (B6h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xB6 );
ILI9341_Write_Data ( 0x0A );
ILI9341_Write_Data ( 0xA2 );
/* Power Control 1 (C0h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xC0 );
ILI9341_Write_Data ( 0x35 );
/* Power Control 2 (C1h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xC1 );
ILI9341_Write_Data ( 0x11 );
/* VCOM Control 1 (C5h) */
ILI9341_Write_Cmd ( 0xC5 );
ILI9341_Write_Data ( 0x45 );
ILI9341_Write_Data ( 0x45 );
/* VCOM Control 2 (C7h) */
ILI9341_Write_Cmd ( 0xC7 );
ILI9341_Write_Data ( 0xA2 );
/* Enable 3G (F2h) */
ILI9341_Write_Cmd ( 0xF2 );
ILI9341_Write_Data ( 0x00 );
/* Gamma Set (26h) */
ILI9341_Write_Cmd ( 0x26 );
ILI9341_Write_Data ( 0x01 );
DEBUG_DELAY ();
/* Positive Gamma Correction */
ILI9341_Write_Cmd ( 0xE0 ); //Set Gamma
ILI9341_Write_Data ( 0x0F );
ILI9341_Write_Data ( 0x26 );
ILI9341_Write_Data ( 0x24 );
ILI9341_Write_Data ( 0x0B );
ILI9341_Write_Data ( 0x0E );
ILI9341_Write_Data ( 0x09 );
ILI9341_Write_Data ( 0x54 );
ILI9341_Write_Data ( 0xA8 );
ILI9341_Write_Data ( 0x46 );
ILI9341_Write_Data ( 0x0C );
ILI9341_Write_Data ( 0x17 );
ILI9341_Write_Data ( 0x09 );
ILI9341_Write_Data ( 0x0F );
ILI9341_Write_Data ( 0x07 );
ILI9341_Write_Data ( 0x00 );
/* Negative Gamma Correction (E1h) */
ILI9341_Write_Cmd ( 0XE1 ); //Set Gamma
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x19 );
ILI9341_Write_Data ( 0x1B );
ILI9341_Write_Data ( 0x04 );
ILI9341_Write_Data ( 0x10 );
ILI9341_Write_Data ( 0x07 );
ILI9341_Write_Data ( 0x2A );
ILI9341_Write_Data ( 0x47 );
ILI9341_Write_Data ( 0x39 );
ILI9341_Write_Data ( 0x03 );
ILI9341_Write_Data ( 0x06 );
ILI9341_Write_Data ( 0x06 );
ILI9341_Write_Data ( 0x30 );
ILI9341_Write_Data ( 0x38 );
ILI9341_Write_Data ( 0x0F );
/* memory access control set */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0x36 );
ILI9341_Write_Data ( 0xC8 ); /*竖屏 左上角到 (起点)到右下角 (终点)扫描方式*/
DEBUG_DELAY ();
/* column address control set */
ILI9341_Write_Cmd ( CMD_SetCoordinateX );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0xEF );
/* page address control set */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( CMD_SetCoordinateY );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x01 );
ILI9341_Write_Data ( 0x3F );
/* Pixel Format Set (3Ah) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0x3a );
ILI9341_Write_Data ( 0x55 );
/* Sleep Out (11h) */
ILI9341_Write_Cmd ( 0x11 );
ILI9341_Delay ( 0xAFFf<<2 );
DEBUG_DELAY ();
/* Display ON (29h) */
ILI9341_Write_Cmd ( 0x29 );
}
else if(lcdid == LCDID_ST7789V)
{
/* Power control B (CFh) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xCF );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0xC1 );
ILI9341_Write_Data ( 0x30 );
/* Power on sequence control (EDh) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xED );
ILI9341_Write_Data ( 0x64 );
ILI9341_Write_Data ( 0x03 );
ILI9341_Write_Data ( 0x12 );
ILI9341_Write_Data ( 0x81 );
/* Driver timing control A (E8h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xE8 );
ILI9341_Write_Data ( 0x85 );
ILI9341_Write_Data ( 0x10 );
ILI9341_Write_Data ( 0x78 );
/* Power control A (CBh) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xCB );
ILI9341_Write_Data ( 0x39 );
ILI9341_Write_Data ( 0x2C );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x34 );
ILI9341_Write_Data ( 0x02 );
/* Pump ratio control (F7h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xF7 );
ILI9341_Write_Data ( 0x20 );
/* Driver timing control B */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xEA );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x00 );
/* Power Control 1 (C0h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xC0 ); //Power control
ILI9341_Write_Data ( 0x21 ); //VRH[5:0]
/* Power Control 2 (C1h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xC1 ); //Power control
ILI9341_Write_Data ( 0x11 ); //SAP[2:0];BT[3:0]
/* VCOM Control 1 (C5h) */
ILI9341_Write_Cmd ( 0xC5 );
ILI9341_Write_Data ( 0x2D );
ILI9341_Write_Data ( 0x33 );
/* VCOM Control 2 (C7h) */
// ILI9341_Write_Cmd ( 0xC7 );
// ILI9341_Write_Data ( 0XC0 );
/* memory access control set */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0x36 ); //Memory Access Control
ILI9341_Write_Data ( 0x00 ); /*竖屏 左上角到 (起点)到右下角 (终点)扫描方式*/
DEBUG_DELAY ();
ILI9341_Write_Cmd(0x3A);
ILI9341_Write_Data(0x55);
/* Frame Rate Control (In Normal Mode/Full Colors) (B1h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xB1 );
ILI9341_Write_Data ( 0x00 );
ILI9341_Write_Data ( 0x17 );
/* Display Function Control (B6h) */
DEBUG_DELAY ();
ILI9341_Write_Cmd ( 0xB6 );
ILI9341_Write_Data ( 0x0A );
ILI9341_Write_Data ( 0xA2 );
ILI9341_Write_Cmd(0xF6);
ILI9341_Write_Data(0x01);
ILI9341_Write_Data(0x30);
/* Enable 3G (F2h) */
ILI9341_Write_Cmd ( 0xF2 );
ILI9341_Write_Data ( 0x00 );
/* Gamma Set (26h) */
ILI9341_Write_Cmd ( 0x26 );
ILI9341_Write_Data ( 0x01 );
DEBUG_DELAY ();
/* Positive Gamma Correction */
ILI9341_Write_Cmd(0xe0); //Positive gamma
ILI9341_Write_Data(0xd0);
ILI9341_Write_Data(0x00);
ILI9341_Write_Data(0x02);
ILI9341_Write_Data(0x07);
ILI9341_Write_Data(0x0b);
ILI9341_Write_Data(0x1a);
ILI9341_Write_Data(0x31);
ILI9341_Write_Data(0x54);
ILI9341_Write_Data(0x40);
ILI9341_Write_Data(0x29);
ILI9341_Write_Data(0x12);
ILI9341_Write_Data(0x12);
ILI9341_Write_Data(0x12);
ILI9341_Write_Data(0x17);
/* Negative Gamma Correction (E1h) */
ILI9341_Write_Cmd(0xe1); //Negative gamma
ILI9341_Write_Data(0xd0);
ILI9341_Write_Data(0x00);
ILI9341_Write_Data(0x02);
ILI9341_Write_Data(0x07);
ILI9341_Write_Data(0x05);
ILI9341_Write_Data(0x25);
ILI9341_Write_Data(0x2d);
ILI9341_Write_Data(0x44);
ILI9341_Write_Data(0x45);
ILI9341_Write_Data(0x1c);
ILI9341_Write_Data(0x18);
ILI9341_Write_Data(0x16);
ILI9341_Write_Data(0x1c);
ILI9341_Write_Data(0x1d);
// /* column address control set */
// ILI9341_Write_Cmd ( CMD_SetCoordinateX );
// ILI9341_Write_Data ( 0x00 );
// ILI9341_Write_Data ( 0x00 );
// ILI9341_Write_Data ( 0x00 );
// ILI9341_Write_Data ( 0xEF );
//
// /* page address control set */
// DEBUG_DELAY ();
// ILI9341_Write_Cmd ( CMD_SetCoordinateY );
// ILI9341_Write_Data ( 0x00 );
// ILI9341_Write_Data ( 0x00 );
// ILI9341_Write_Data ( 0x01 );
// ILI9341_Write_Data ( 0x3F );
/* Sleep Out (11h) */
ILI9341_Write_Cmd ( 0x11 ); //Exit Sleep
ILI9341_Delay ( 0xAFFf<<2 );
DEBUG_DELAY ();
/* Display ON (29h) */
ILI9341_Write_Cmd ( 0x29 ); //Display on
ILI9341_Write_Cmd(0x2c);
}
}
/**
* @brief ILI9341初始化函数，如果要用到lcd，一定要调用这个函数
* @param 无
* @retval 无
*/
void ILI9341_Init ( void )
{
ILI9341_GPIO_Config ();
ILI9341_FSMC_Config ();
ILI9341_BackLed_Control ( ENABLE ); //点亮LCD背光灯
ILI9341_Rst ();
ILI9341_REG_Config ();
//设置默认扫描方向，其中 6 模式为大部分液晶例程的默认显示方向
ILI9341_GramScan(LCD_SCAN_MODE);
}
/**
* @brief ILI9341背光LED控制
* @param enumState ：决定是否使能背光LED
* 该参数为以下值之一：
* @arg ENABLE :使能背光LED
* @arg DISABLE :禁用背光LED
* @retval 无
*/
void ILI9341_BackLed_Control ( FunctionalState enumState )
{
if ( enumState )
GPIO_ResetBits ( ILI9341_BK_PORT, ILI9341_BK_PIN );
else
GPIO_SetBits ( ILI9341_BK_PORT, ILI9341_BK_PIN );
}
/**
* @brief 读取LCD驱动芯片ID函数，可用于测试底层的读写函数
* @param 无
* @retval 正常时返回值为LCD驱动芯片ID: LCDID_ILI9341/LCDID_ST7789V
* 否则返回: LCDID_UNKNOWN
*/
uint16_t ILI9341_ReadID(void)
{
uint16_t id = 0;
ILI9341_Write_Cmd(0x04);
ILI9341_Read_Data();
ILI9341_Read_Data();
id = ILI9341_Read_Data();
id <<= 8;
id |= ILI9341_Read_Data();
if(id == LCDID_ST7789V)
{
return id;
}
else
{
ILI9341_Write_Cmd(0xD3);
ILI9341_Read_Data();
ILI9341_Read_Data();
id = ILI9341_Read_Data();
id <<= 8;
id |= ILI9341_Read_Data();
if(id == LCDID_ILI9341)
{
return id;
}
}
return LCDID_UNKNOWN;
}
/**
* @brief ILI9341 软件复位
* @param 无
* @retval 无
*/
void ILI9341_Rst ( void )
{
GPIO_ResetBits ( ILI9341_RST_PORT, ILI9341_RST_PIN ); //低电平复位
ILI9341_Delay ( 0xAFF );
GPIO_SetBits ( ILI9341_RST_PORT, ILI9341_RST_PIN );
ILI9341_Delay ( 0xAFF );
}
/**
* @brief 设置ILI9341的GRAM的扫描方向
* @param ucOption ：选择GRAM的扫描方向
* @arg 0-7 :参数可选值为0-7这八个方向
*
* ！！！其中0、3、5、6 模式适合从左至右显示文字，
* 不推荐使用其它模式显示文字 其它模式显示文字会有镜像效果
*
* 其中0、2、4、6 模式的X方向像素为240，Y方向像素为320
* 其中1、3、5、7 模式下X方向像素为320，Y方向像素为240
*
* 其中 6 模式为大部分液晶例程的默认显示方向
* 其中 3 模式为摄像头例程使用的方向
* 其中 0 模式为BMP图片显示例程使用的方向
*
* @retval 无
* @note 坐标图例：A表示向上，V表示向下，<表示向左，>表示向右
X表示X轴，Y表示Y轴
LCDID_ILI9341
------------------------------------------------------------
模式0： . 模式1： . 模式2： . 模式3：
A . A . A . A
| . | . | . |
Y . X . Y . X
0 . 1 . 2 . 3
<--- X0 o . <----Y1 o . o 2X---> . o 3Y--->
------------------------------------------------------------
模式4： . 模式5： . 模式6： . 模式7：
<--- X4 o . <--- Y5 o . o 6X---> . o 7Y--->
4 . 5 . 6 . 7
Y . X . Y . X
| . | . | . |
V . V . V . V
---------------------------------------------------------
LCD屏示例
|-----------------|
| 野火Logo |
| |
| |
| |
| |
| |
| |
| |
| |
|-----------------|
屏幕正面（宽240，高320）
LCDID_ST7789V
------------------------------------------------------------
模式0： . 模式1： . 模式2： . 模式3：
o 0X---> . o 1Y---> . <--- X2 o . <--- Y3 o
0 . 1 . 2 . 3
Y . X . Y . X
| . | . | . |
V V . V . V
------------------------------------------------------------
模式4： . 模式5： . 模式6： . 模式7：
A . A . A . A
| . | . | . |
Y . X . Y . X
4 . 5 . 6 . 7
o 4X---> . o 5Y---> . <--- X6 o . <--- Y7 o
---------------------------------------------------------
LCD屏示例
|-----------------|
| 野火Logo |
| |
| |
| |
| |
| |
| |
| |
| |
|-----------------|
屏幕正面（宽240，高320）
*******************************************************/
void ILI9341_GramScan ( uint8_t ucOption )
{
//参数检查，只可输入0-7
if(ucOption >7 )
return;
//根据模式更新LCD_SCAN_MODE的值，主要用于触摸屏选择计算参数
LCD_SCAN_MODE = ucOption;
//根据模式更新XY方向的像素宽度
if(ucOption%2 == 0)
{
//0 2 4 6模式下X方向像素宽度为240，Y方向为320
LCD_X_LENGTH = ILI9341_LESS_PIXEL;
LCD_Y_LENGTH = ILI9341_MORE_PIXEL;
}
else
{
//1 3 5 7模式下X方向像素宽度为320，Y方向为240
LCD_X_LENGTH = ILI9341_MORE_PIXEL;
LCD_Y_LENGTH = ILI9341_LESS_PIXEL;
}
//0x36命令参数的高3位可用于设置GRAM扫描方向
ILI9341_Write_Cmd ( 0x36 );
if(lcdid == LCDID_ILI9341)
{
ILI9341_Write_Data ( 0x08 |(ucOption<<5));//根据ucOption的值设置LCD参数，共0-7种模式
}
else if(lcdid == LCDID_ST7789V)
{
ILI9341_Write_Data ( 0x00 |(ucOption<<5));//根据ucOption的值设置LCD参数，共0-7种模式
}
ILI9341_Write_Cmd ( CMD_SetCoordinateX );
ILI9341_Write_Data ( 0x00 ); /* x 起始坐标高8位 */
ILI9341_Write_Data ( 0x00 ); /* x 起始坐标低8位 */
ILI9341_Write_Data ( ((LCD_X_LENGTH-1)>>8)&0xFF ); /* x 结束坐标高8位 */
ILI9341_Write_Data ( (LCD_X_LENGTH-1)&0xFF ); /* x 结束坐标低8位 */
ILI9341_Write_Cmd ( CMD_SetCoordinateY );
ILI9341_Write_Data ( 0x00 ); /* y 起始坐标高8位 */
ILI9341_Write_Data ( 0x00 ); /* y 起始坐标低8位 */
ILI9341_Write_Data ( ((LCD_Y_LENGTH-1)>>8)&0xFF ); /* y 结束坐标高8位 */
ILI9341_Write_Data ( (LCD_Y_LENGTH-1)&0xFF ); /* y 结束坐标低8位 */
/* write gram start */
ILI9341_Write_Cmd ( CMD_SetPixel );
}
/**
* @brief 在ILI9341显示器上开辟一个窗口
* @param usX ：在特定扫描方向下窗口的起点X坐标
* @param usY ：在特定扫描方向下窗口的起点Y坐标
* @param usWidth ：窗口的宽度
* @param usHeight ：窗口的高度
* @retval 无
*/
void ILI9341_OpenWindow ( uint16_t usX, uint16_t usY, uint16_t usWidth, uint16_t usHeight )
{
ILI9341_Write_Cmd ( CMD_SetCoordinateX ); /* 设置X坐标 */
ILI9341_Write_Data ( usX >> 8 ); /* 先高8位，然后低8位 */
ILI9341_Write_Data ( usX & 0xff ); /* 设置起始点和结束点*/
ILI9341_Write_Data ( ( usX + usWidth - 1 ) >> 8 );
ILI9341_Write_Data ( ( usX + usWidth - 1 ) & 0xff );
ILI9341_Write_Cmd ( CMD_SetCoordinateY ); /* 设置Y坐标*/
ILI9341_Write_Data ( usY >> 8 );
ILI9341_Write_Data ( usY & 0xff );
ILI9341_Write_Data ( ( usY + usHeight - 1 ) >> 8 );
ILI9341_Write_Data ( ( usY + usHeight - 1) & 0xff );
}
/**
* @brief 设定ILI9341的光标坐标
* @param usX ：在特定扫描方向下光标的X坐标
* @param usY ：在特定扫描方向下光标的Y坐标
* @retval 无
*/
static void ILI9341_SetCursor ( uint16_t usX, uint16_t usY )
{
ILI9341_OpenWindow ( usX, usY, 1, 1 );
}
/**
* @brief 在ILI9341显示器上以某一颜色填充像素点
* @param ulAmout_Point ：要填充颜色的像素点的总数目
* @param usColor ：颜色
* @retval 无
*/
static __inline void ILI9341_FillColor ( uint32_t ulAmout_Point, uint16_t usColor )
{
uint32_t i = 0;
/* memory write */
ILI9341_Write_Cmd ( CMD_SetPixel );
for ( i = 0; i < ulAmout_Point; i ++ )
ILI9341_Write_Data ( usColor );
}
/**
* @brief 对ILI9341显示器的某一窗口以某种颜色进行清屏
* @param usX ：在特定扫描方向下窗口的起点X坐标
* @param usY ：在特定扫描方向下窗口的起点Y坐标
* @param usWidth ：窗口的宽度
* @param usHeight ：窗口的高度
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_Clear ( uint16_t usX, uint16_t usY, uint16_t usWidth, uint16_t usHeight )
{
ILI9341_OpenWindow ( usX, usY, usWidth, usHeight );
ILI9341_FillColor ( usWidth * usHeight, CurrentBackColor );
}
/**
* @brief 对ILI9341显示器的某一点以某种颜色进行填充
* @param usX ：在特定扫描方向下该点的X坐标
* @param usY ：在特定扫描方向下该点的Y坐标
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_SetPointPixel ( uint16_t usX, uint16_t usY )
{
if ( ( usX < LCD_X_LENGTH ) && ( usY < LCD_Y_LENGTH ) )
{
ILI9341_SetCursor ( usX, usY );
ILI9341_FillColor ( 1, CurrentTextColor );
}
}
/**
* @brief 读取 GRAM 的一个像素数据
* @param 无
* @retval 像素数据
*/
static uint16_t ILI9341_Read_PixelData ( void )
{
uint16_t usRG=0, usB=0 ;
ILI9341_Write_Cmd ( 0x2E ); /* 读数据 */
//去掉前一次读取结果
ILI9341_Read_Data (); /*FIRST READ OUT DUMMY DATA*/
//获取红色通道与绿色通道的值
usRG = ILI9341_Read_Data (); /*READ OUT RED AND GREEN DATA */
usB = ILI9341_Read_Data (); /*READ OUT BLUE DATA*/
return ( (usRG&0xF800)| ((usRG<<3)&0x7E0) | (usB>>11) );
}
/**
* @brief 获取 ILI9341 显示器上某一个坐标点的像素数据
* @param usX ：在特定扫描方向下该点的X坐标
* @param usY ：在特定扫描方向下该点的Y坐标
* @retval 像素数据
*/
uint16_t ILI9341_GetPointPixel ( uint16_t usX, uint16_t usY )
{
uint16_t usPixelData;
ILI9341_SetCursor ( usX, usY );
usPixelData = ILI9341_Read_PixelData ();
return usPixelData;
}
/**
* @brief 在 ILI9341 显示器上使用 Bresenham 算法画线段
* @param usX1 ：在特定扫描方向下线段的一个端点X坐标
* @param usY1 ：在特定扫描方向下线段的一个端点Y坐标
* @param usX2 ：在特定扫描方向下线段的另一个端点X坐标
* @param usY2 ：在特定扫描方向下线段的另一个端点Y坐标
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_DrawLine ( uint16_t usX1, uint16_t usY1, uint16_t usX2, uint16_t usY2 )
{
uint16_t us;
uint16_t usX_Current, usY_Current;
int32_t lError_X = 0, lError_Y = 0, lDelta_X, lDelta_Y, lDistance;
int32_t lIncrease_X, lIncrease_Y;
lDelta_X = usX2 - usX1; //计算坐标增量
lDelta_Y = usY2 - usY1;
usX_Current = usX1;
usY_Current = usY1;
if ( lDelta_X > 0 )
lIncrease_X = 1; //设置单步方向
else if ( lDelta_X == 0 )
lIncrease_X = 0;//垂直线
else
{
lIncrease_X = -1;
lDelta_X = - lDelta_X;
}
if ( lDelta_Y > 0 )
lIncrease_Y = 1;
else if ( lDelta_Y == 0 )
lIncrease_Y = 0;//水平线
else
{
lIncrease_Y = -1;
lDelta_Y = - lDelta_Y;
}
if ( lDelta_X > lDelta_Y )
lDistance = lDelta_X; //选取基本增量坐标轴
else
lDistance = lDelta_Y;
for ( us = 0; us <= lDistance + 1; us ++ )//画线输出
{
ILI9341_SetPointPixel ( usX_Current, usY_Current );//画点
lError_X += lDelta_X ;
lError_Y += lDelta_Y ;
if ( lError_X > lDistance )
{
lError_X -= lDistance;
usX_Current += lIncrease_X;
}
if ( lError_Y > lDistance )
{
lError_Y -= lDistance;
usY_Current += lIncrease_Y;
}
}
}
/**
* @brief 在 ILI9341 显示器上画一个矩形
* @param usX_Start ：在特定扫描方向下矩形的起始点X坐标
* @param usY_Start ：在特定扫描方向下矩形的起始点Y坐标
* @param usWidth：矩形的宽度（单位：像素）
* @param usHeight：矩形的高度（单位：像素）
* @param ucFilled ：选择是否填充该矩形
* 该参数为以下值之一：
* @arg 0 :空心矩形
* @arg 1 :实心矩形
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_DrawRectangle ( uint16_t usX_Start, uint16_t usY_Start, uint16_t usWidth, uint16_t usHeight, uint8_t ucFilled )
{
if ( ucFilled )
{
ILI9341_OpenWindow ( usX_Start, usY_Start, usWidth, usHeight );
ILI9341_FillColor ( usWidth * usHeight ,CurrentTextColor);
}
else
{
ILI9341_DrawLine ( usX_Start, usY_Start, usX_Start + usWidth - 1, usY_Start );
ILI9341_DrawLine ( usX_Start, usY_Start + usHeight - 1, usX_Start + usWidth - 1, usY_Start + usHeight - 1 );
ILI9341_DrawLine ( usX_Start, usY_Start, usX_Start, usY_Start + usHeight - 1 );
ILI9341_DrawLine ( usX_Start + usWidth - 1, usY_Start, usX_Start + usWidth - 1, usY_Start + usHeight - 1 );
}
}
/**
* @brief 在 ILI9341 显示器上使用 Bresenham 算法画圆
* @param usX_Center ：在特定扫描方向下圆心的X坐标
* @param usY_Center ：在特定扫描方向下圆心的Y坐标
* @param usRadius：圆的半径（单位：像素）
* @param ucFilled ：选择是否填充该圆
* 该参数为以下值之一：
* @arg 0 :空心圆
* @arg 1 :实心圆
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_DrawCircle ( uint16_t usX_Center, uint16_t usY_Center, uint16_t usRadius, uint8_t ucFilled )
{
int16_t sCurrentX, sCurrentY;
int16_t sError;
sCurrentX = 0; sCurrentY = usRadius;
sError = 3 - ( usRadius << 1 ); //判断下个点位置的标志
while ( sCurrentX <= sCurrentY )
{
int16_t sCountY;
if ( ucFilled )
for ( sCountY = sCurrentX; sCountY <= sCurrentY; sCountY ++ )
{
ILI9341_SetPointPixel ( usX_Center + sCurrentX, usY_Center + sCountY ); //1，研究对象
ILI9341_SetPointPixel ( usX_Center - sCurrentX, usY_Center + sCountY ); //2
ILI9341_SetPointPixel ( usX_Center - sCountY, usY_Center + sCurrentX ); //3
ILI9341_SetPointPixel ( usX_Center - sCountY, usY_Center - sCurrentX ); //4
ILI9341_SetPointPixel ( usX_Center - sCurrentX, usY_Center - sCountY ); //5
ILI9341_SetPointPixel ( usX_Center + sCurrentX, usY_Center - sCountY ); //6
ILI9341_SetPointPixel ( usX_Center + sCountY, usY_Center - sCurrentX ); //7
ILI9341_SetPointPixel ( usX_Center + sCountY, usY_Center + sCurrentX ); //0
}
else
{
ILI9341_SetPointPixel ( usX_Center + sCurrentX, usY_Center + sCurrentY ); //1，研究对象
ILI9341_SetPointPixel ( usX_Center - sCurrentX, usY_Center + sCurrentY ); //2
ILI9341_SetPointPixel ( usX_Center - sCurrentY, usY_Center + sCurrentX ); //3
ILI9341_SetPointPixel ( usX_Center - sCurrentY, usY_Center - sCurrentX ); //4
ILI9341_SetPointPixel ( usX_Center - sCurrentX, usY_Center - sCurrentY ); //5
ILI9341_SetPointPixel ( usX_Center + sCurrentX, usY_Center - sCurrentY ); //6
ILI9341_SetPointPixel ( usX_Center + sCurrentY, usY_Center - sCurrentX ); //7
ILI9341_SetPointPixel ( usX_Center + sCurrentY, usY_Center + sCurrentX ); //0
}
sCurrentX ++;
if ( sError < 0 )
sError += 4 * sCurrentX + 6;
else
{
sError += 10 + 4 * ( sCurrentX - sCurrentY );
sCurrentY --;
}
}
}
/**
* @brief 在 ILI9341 显示器上显示一个英文字符
* @param usX ：在特定扫描方向下字符的起始X坐标
* @param usY ：在特定扫描方向下该点的起始Y坐标
* @param cChar ：要显示的英文字符
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_DispChar_EN ( uint16_t usX, uint16_t usY, const char cChar )
{
uint8_t byteCount, bitCount,fontLength;
uint16_t ucRelativePositon;
uint8_t *Pfont;
//对ascii码表偏移（字模表不包含ASCII表的前32个非图形符号）
ucRelativePositon = cChar - ' ';
//每个字模的字节数
fontLength = (LCD_Currentfonts->Width*LCD_Currentfonts->Height)/8;
//字模首地址
/*ascii码表偏移值乘以每个字模的字节数，求出字模的偏移位置*/
Pfont = (uint8_t *)&LCD_Currentfonts->table[ucRelativePositon * fontLength];
//设置显示窗口
ILI9341_OpenWindow ( usX, usY, LCD_Currentfonts->Width, LCD_Currentfonts->Height);
ILI9341_Write_Cmd ( CMD_SetPixel );
//按字节读取字模数据
//由于前面直接设置了显示窗口，显示数据会自动换行
for ( byteCount = 0; byteCount < fontLength; byteCount++ )
{
//一位一位处理要显示的颜色
for ( bitCount = 0; bitCount < 8; bitCount++ )
{
if ( Pfont[byteCount] & (0x80>>bitCount) )
ILI9341_Write_Data ( CurrentTextColor );
else
ILI9341_Write_Data ( CurrentBackColor );
}
}
}
/**
* @brief 在 ILI9341 显示器上显示英文字符串
* @param line ：在特定扫描方向下字符串的起始Y坐标
* 本参数可使用宏LINE(0)、LINE(1)等方式指定文字坐标，
* 宏LINE(x)会根据当前选择的字体来计算Y坐标值。
* 显示中文且使用LINE宏时，需要把英文字体设置成Font8x16
* @param pStr ：要显示的英文字符串的首地址
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_DispStringLine_EN ( uint16_t line, char * pStr )
{
uint16_t usX = 0;
while ( * pStr != '\0' )
{
if ( ( usX - ILI9341_DispWindow_X_Star + LCD_Currentfonts->Width ) > LCD_X_LENGTH )
{
usX = ILI9341_DispWindow_X_Star;
line += LCD_Currentfonts->Height;
}
if ( ( line - ILI9341_DispWindow_Y_Star + LCD_Currentfonts->Height ) > LCD_Y_LENGTH )
{
usX = ILI9341_DispWindow_X_Star;
line = ILI9341_DispWindow_Y_Star;
}
ILI9341_DispChar_EN ( usX, line, * pStr);
pStr ++;
usX += LCD_Currentfonts->Width;
}
}
/**
* @brief 在 ILI9341 显示器上显示英文字符串
* @param usX ：在特定扫描方向下字符的起始X坐标
* @param usY ：在特定扫描方向下字符的起始Y坐标
* @param pStr ：要显示的英文字符串的首地址
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_DispString_EN ( uint16_t usX ,uint16_t usY, char * pStr )
{
while ( * pStr != '\0' )
{
if ( ( usX - ILI9341_DispWindow_X_Star + LCD_Currentfonts->Width ) > LCD_X_LENGTH )
{
usX = ILI9341_DispWindow_X_Star;
usY += LCD_Currentfonts->Height;
}
if ( ( usY - ILI9341_DispWindow_Y_Star + LCD_Currentfonts->Height ) > LCD_Y_LENGTH )
{
usX = ILI9341_DispWindow_X_Star;
usY = ILI9341_DispWindow_Y_Star;
}
ILI9341_DispChar_EN ( usX, usY, * pStr);
pStr ++;
usX += LCD_Currentfonts->Width;
}
}
/**
* @brief 在 ILI9341 显示器上显示英文字符串(沿Y轴方向)
* @param usX ：在特定扫描方向下字符的起始X坐标
* @param usY ：在特定扫描方向下字符的起始Y坐标
* @param pStr ：要显示的英文字符串的首地址
* @note 可使用LCD_SetBackColor、LCD_SetTextColor、LCD_SetColors函数设置颜色
* @retval 无
*/
void ILI9341_DispString_EN_YDir ( uint16_t usX,uint16_t usY , char * pStr )
{
while ( * pStr != '\0' )
{
if ( ( usY - ILI9341_DispWindow_Y_Star + LCD_Currentfonts->Height ) >LCD_Y_LENGTH )
{
usY = ILI9341_DispWindow_Y_Star;
usX += LCD_Currentfonts->Width;
}
if ( ( usX - ILI9341_DispWindow_X_Star + LCD_Currentfonts->Width ) > LCD_X_LENGTH)
{
usX = ILI9341_DispWindow_X_Star;
usY = ILI9341_DispWindow_Y_Star;
}
ILI9341_DispChar_EN ( usX, usY, * pStr);
pStr ++;
usY += LCD_Currentfonts->Height;
}
}
/**
* @brief 设置英文字体类型
* @param fonts: 指定要选择的字体
* 参数为以下值之一
* @arg：Font24x32;
* @arg：Font16x24;
* @arg：Font8x16;
* @retval None
*/
void LCD_SetFont(sFONT *fonts)
{
LCD_Currentfonts = fonts;
}
/**
* @brief 获取当前字体类型
* @param None.
* @retval 返回当前字体类型
*/
sFONT *LCD_GetFont(void)
{
return LCD_Currentfonts;
}
/**
* @brief 设置LCD的前景(字体)及背景颜色,RGB565
* @param TextColor: 指定前景(字体)颜色
* @param BackColor: 指定背景颜色
* @retval None
*/
void LCD_SetColors(uint16_t TextColor, uint16_t BackColor)
{
CurrentTextColor = TextColor;
CurrentBackColor = BackColor;
}
/**
* @brief 获取LCD的前景(字体)及背景颜色,RGB565
* @param TextColor: 用来存储前景(字体)颜色的指针变量
* @param BackColor: 用来存储背景颜色的指针变量
* @retval None
*/
void LCD_GetColors(uint16_t *TextColor, uint16_t *BackColor)
{
*TextColor = CurrentTextColor;
*BackColor = CurrentBackColor;
}
/**
* @brief 设置LCD的前景(字体)颜色,RGB565
* @param Color: 指定前景(字体)颜色
* @retval None
*/
void LCD_SetTextColor(uint16_t Color)
{
CurrentTextColor = Color;
}
/**
* @brief 设置LCD的背景颜色,RGB565
* @param Color: 指定背景颜色
* @retval None
*/
void LCD_SetBackColor(uint16_t Color)
{
CurrentBackColor = Color;
}
/**
* @brief 清除某行文字
* @param Line: 指定要删除的行
* 本参数可使用宏LINE(0)、LINE(1)等方式指定要删除的行，
* 宏LINE(x)会根据当前选择的字体来计算Y坐标值，并删除当前字体高度的第x行。
* @retval None
*/
void LCD_ClearLine(uint16_t Line)
{
ILI9341_Clear(0,Line,LCD_X_LENGTH,((sFONT *)LCD_GetFont())->Height); /* 清屏，显示全黑 */
}
2.2.2 SDIO驱动
#include "sdio_sdcard.h"
#include "usart.h"
/* Private macro -------------------------------------------------------------*/
/**
* @brief SDIO Static flags, TimeOut, FIFO Address
*/
#define NULL 0
#define SDIO_STATIC_FLAGS ((uint32_t)0x000005FF)
#define SDIO_CMD0TIMEOUT ((uint32_t)0x00010000)
/**
* @brief Mask for errors Card Status R1 (OCR Register)
*/
#define SD_OCR_ADDR_OUT_OF_RANGE ((uint32_t)0x80000000)
#define SD_OCR_ADDR_MISALIGNED ((uint32_t)0x40000000)
#define SD_OCR_BLOCK_LEN_ERR ((uint32_t)0x20000000)
#define SD_OCR_ERASE_SEQ_ERR ((uint32_t)0x10000000)
#define SD_OCR_BAD_ERASE_PARAM ((uint32_t)0x08000000)
#define SD_OCR_WRITE_PROT_VIOLATION ((uint32_t)0x04000000)
#define SD_OCR_LOCK_UNLOCK_FAILED ((uint32_t)0x01000000)
#define SD_OCR_COM_CRC_FAILED ((uint32_t)0x00800000)
#define SD_OCR_ILLEGAL_CMD ((uint32_t)0x00400000)
#define SD_OCR_CARD_ECC_FAILED ((uint32_t)0x00200000)
#define SD_OCR_CC_ERROR ((uint32_t)0x00100000)
#define SD_OCR_GENERAL_UNKNOWN_ERROR ((uint32_t)0x00080000)
#define SD_OCR_STREAM_READ_UNDERRUN ((uint32_t)0x00040000)
#define SD_OCR_STREAM_WRITE_OVERRUN ((uint32_t)0x00020000)
#define SD_OCR_CID_CSD_OVERWRIETE ((uint32_t)0x00010000)
#define SD_OCR_WP_ERASE_SKIP ((uint32_t)0x00008000)
#define SD_OCR_CARD_ECC_DISABLED ((uint32_t)0x00004000)
#define SD_OCR_ERASE_RESET ((uint32_t)0x00002000)
#define SD_OCR_AKE_SEQ_ERROR ((uint32_t)0x00000008)
#define SD_OCR_ERRORBITS ((uint32_t)0xFDFFE008)
/**
* @brief Masks for R6 Response
*/
#define SD_R6_GENERAL_UNKNOWN_ERROR ((uint32_t)0x00002000)
#define SD_R6_ILLEGAL_CMD ((uint32_t)0x00004000)
#define SD_R6_COM_CRC_FAILED ((uint32_t)0x00008000)
#define SD_VOLTAGE_WINDOW_SD ((uint32_t)0x80100000)
#define SD_HIGH_CAPACITY ((uint32_t)0x40000000)
#define SD_STD_CAPACITY ((uint32_t)0x00000000)
#define SD_CHECK_PATTERN ((uint32_t)0x000001AA)
#define SD_MAX_VOLT_TRIAL ((uint32_t)0x0000FFFF)
#define SD_ALLZERO ((uint32_t)0x00000000)
#define SD_WIDE_BUS_SUPPORT ((uint32_t)0x00040000)
#define SD_SINGLE_BUS_SUPPORT ((uint32_t)0x00010000)
#define SD_CARD_LOCKED ((uint32_t)0x02000000)
#define SD_DATATIMEOUT ((uint32_t)0xFFFFFFFF)
#define SD_0TO7BITS ((uint32_t)0x000000FF)
#define SD_8TO15BITS ((uint32_t)0x0000FF00)
#define SD_16TO23BITS ((uint32_t)0x00FF0000)
#define SD_24TO31BITS ((uint32_t)0xFF000000)
#define SD_MAX_DATA_LENGTH ((uint32_t)0x01FFFFFF)
#define SD_HALFFIFO ((uint32_t)0x00000008)
#define SD_HALFFIFOBYTES ((uint32_t)0x00000020)
/**
* @brief Command Class Supported
*/
#define SD_CCCC_LOCK_UNLOCK ((uint32_t)0x00000080)
#define SD_CCCC_WRITE_PROT ((uint32_t)0x00000040)
#define SD_CCCC_ERASE ((uint32_t)0x00000020)
/**
* @brief Following commands are SD Card Specific commands.
* SDIO_APP_CMD should be sent before sending these commands.
*/
#define SDIO_SEND_IF_COND ((uint32_t)0x00000008)
/* Private variables ---------------------------------------------------------*/
static uint32_t CardType = SDIO_STD_CAPACITY_SD_CARD_V1_1; //存储卡的类型，先把它初始化为1.1协议的卡
static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;//存储CSD，DID，寄存器和卡相对地址
static uint8_t SDSTATUS_Tab[16]; //存储卡状态，是CSR的一部分
__IO uint32_t StopCondition = 0; //用于停止卡操作的标志
__IO SD_Error TransferError = SD_OK; //用于存储卡错误，初始化为正常状态
__IO uint32_t TransferEnd = 0; //用于标志传输是否结束，在中断服务函数中调用
SD_CardInfo SDCardInfo; //用于存储卡的信息，DSR的一部分？
/*用于sdio初始化的结构体*/
SDIO_InitTypeDef SDIO_InitStructure;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;
/* Private function prototypes -----------------------------------------------*/
static SD_Error CmdError(void);
static SD_Error CmdResp1Error(uint8_t cmd);
static SD_Error CmdResp7Error(void);
static SD_Error CmdResp3Error(void);
static SD_Error CmdResp2Error(void);
static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);
static SD_Error SDEnWideBus(FunctionalState NewState);
static SD_Error IsCardProgramming(uint8_t *pstatus);
static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);
static void GPIO_Configuration(void);
static uint32_t SD_DMAEndOfTransferStatus(void);
static void SD_DMA_RxConfig(uint32_t *BufferDST, uint32_t BufferSize);
static void SD_DMA_TxConfig(uint32_t *BufferSRC, uint32_t BufferSize);
uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);
/* Private functions ---------------------------------------------------------*/
/*
* 函数名：SD_DeInit
* 描述 ：复位SDIO端口
* 输入 ：无
* 输出 ：无
*/
void SD_DeInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/*!< Disable SDIO Clock */
SDIO_ClockCmd(DISABLE);
/*!< Set Power State to OFF */
SDIO_SetPowerState(SDIO_PowerState_OFF);
/*!< DeInitializes the SDIO peripheral */
SDIO_DeInit();
/*!< Disable the SDIO AHB Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, DISABLE);
/*!< Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/*!< Configure PD.02 CMD line */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}
/*
* 函数名：NVIC_Configuration
* 描述 ：SDIO 优先级配置为最高优先级。
* 输入 ：无
* 输出 ：无
*/
static void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure the NVIC Preemption Priority Bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/**
* @brief Returns the DMA End Of Transfer Status.
* @param None
* @retval DMA SDIO Channel Status.
*/
uint32_t SD_DMAEndOfTransferStatus(void)
{
return (uint32_t)DMA_GetFlagStatus(DMA2_FLAG_TC4); //Channel4 transfer complete flag.
}
/*
* 函数名：SD_DMA_RxConfig
* 描述 ：为SDIO接收数据配置DMA2的通道4的请求
* 输入 ：BufferDST：用于装载数据的变量指针
* : BufferSize： 缓冲区大小
* 输出 ：无
*/
void SD_DMA_RxConfig(uint32_t *BufferDST, uint32_t BufferSize)
{
DMA_InitTypeDef DMA_InitStructure;
DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);//清除DMA标志位
/*!< DMA2 Channel4 disable */
DMA_Cmd(DMA2_Channel4, DISABLE); //SDIO为第四通道
/*!< DMA2 Channel4 Config */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS; //外设地址，fifo
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferDST; //目标地址
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //外设为原地址
DMA_InitStructure.DMA_BufferSize = BufferSize / 4; //1/4缓存大小
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//使能外设地址不自增
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //使能存储目标地址自增
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word; //外设数据大小为字，32位
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word; //外设数据大小为字，32位
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //不循环，循环模式主要用在adc上
DMA_InitStructure.DMA_Priority = DMA_Priority_High; //通道优先级高
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //非 存储器至存储器模式
DMA_Init(DMA2_Channel4, &DMA_InitStructure);
/*!< DMA2 Channel4 enable */ //不设置dma中断？
DMA_Cmd(DMA2_Channel4, ENABLE);
}
/*
* 函数名：SD_DMA_RxConfig
* 描述 ：为SDIO发送数据配置DMA2的通道4的请求
* 输入 ：BufferDST：装载了数据的变量指针
BufferSize： 缓冲区大小
* 输出 ：无
*/
void SD_DMA_TxConfig(uint32_t *BufferSRC, uint32_t BufferSize)
{
DMA_InitTypeDef DMA_InitStructure;
DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
/*!< DMA2 Channel4 disable */
DMA_Cmd(DMA2_Channel4, DISABLE);
/*!< DMA2 Channel4 Config */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferSRC;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;//外设为写入目标
DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址不自增
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA2_Channel4, &DMA_InitStructure);
/*!< DMA2 Channel4 enable */
DMA_Cmd(DMA2_Channel4, ENABLE);
}
/*
* 函数名：GPIO_Configuration
* 描述 ：初始化SDIO用到的引脚，开启时钟。
* 输入 ：无
* 输出 ：无
* 调用 ：内部调用
*/
static void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/*!< GPIOC and GPIOD Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD , ENABLE);
/*!< Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/*!< Configure PD.02 CMD line */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/*!< Enable the SDIO AHB Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);
/*!< Enable the DMA2 Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
}
/**
* 函数名：SD_Init
* 描述 ：初始化SD卡，使卡处于就绪状态(准备传输数据)
* 输入 ：无
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
SD_Error SD_Init(void)
{
/*重置SD_Error状态*/
SD_Error errorstatus = SD_OK;
NVIC_Configuration();
/* SDIO 外设底层引脚初始化 */
GPIO_Configuration();
/*对SDIO的所有寄存器进行复位*/
SDIO_DeInit();
/*上电并进行卡识别流程，确认卡的操作电压 */
errorstatus = SD_PowerON();
/*如果上电，识别不成功，返回“响应超时”错误 */
if (errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return(errorstatus);
}
/*卡识别成功，进行卡初始化 */
errorstatus = SD_InitializeCards();
if (errorstatus != SD_OK) //失败返回
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return(errorstatus);
}
/* 配置SDIO外设
* 上电识别，卡初始化都完成后，进入数据传输模式，提高读写速度
* 速度若超过24M要进入bypass模式
*/
/* SDIOCLK = HCLK, SDIO_CK = HCLK/(2 + SDIO_TRANSFER_CLK_DIV) */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
/*上升沿采集数据 */
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
/* 时钟频率若超过24M,要开启此模式 */
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
/* 若开启此功能，在总线空闲时关闭sd_clk时钟 */
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
/* 暂时配置成1bit模式 */
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
/* 硬件流，若开启，在FIFO不能进行发送和接收数据时，数据传输暂停 */
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
if (errorstatus == SD_OK)
{
/* 用来读取csd/cid寄存器 */
errorstatus = SD_GetCardInfo(&SDCardInfo);
}
if (errorstatus == SD_OK)
{
/* 通过cmd7 ,rca选择要操作的卡 */
errorstatus = SD_SelectDeselect((uint32_t) (SDCardInfo.RCA << 16));
}
if (errorstatus == SD_OK)
{
/* 最后为了提高读写，开启4bits模式 */
errorstatus = SD_EnableWideBusOperation(SDIO_BusWide_4b);
}
return(errorstatus);
}
/**
* @brief Gets the cuurent sd card data transfer status.
* @param None
* @retval SDTransferState: Data Transfer state.
* This value can be:
* - SD_TRANSFER_OK: No data transfer is acting
* - SD_TRANSFER_BUSY: Data transfer is acting
*/
SDTransferState SD_GetStatus(void)
{
SDCardState cardstate = SD_CARD_TRANSFER;
cardstate = SD_GetState();
if (cardstate == SD_CARD_TRANSFER)
{
return(SD_TRANSFER_OK);
}
else if(cardstate == SD_CARD_ERROR)
{
return (SD_TRANSFER_ERROR);
}
else
{
return(SD_TRANSFER_BUSY);
}
}
/**
* @brief Returns the current card's state.
* @param None
* @retval SDCardState: SD Card Error or SD Card Current State.
*/
SDCardState SD_GetState(void)
{
uint32_t resp1 = 0;
if (SD_SendStatus(&resp1) != SD_OK)
{
return SD_CARD_ERROR;
}
else
{
return (SDCardState)((resp1 >> 9) & 0x0F);
}
}
/*
* 函数名：SD_PowerON
* 描述 ：确保SD卡的工作电压和配置控制时钟
* 输入 ：无
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：在 SD_Init() 调用
*/
SD_Error SD_PowerON(void)
{
SD_Error errorstatus = SD_OK;
uint32_t response = 0, count = 0, validvoltage = 0;
uint32_t SDType = SD_STD_CAPACITY;
/********************************************************************************************************/
/* 上电初始化
* 配置SDIO的外设
* SDIOCLK = HCLK, SDIO_CK = HCLK/(2 + SDIO_INIT_CLK_DIV)
* 初始化时的时钟不能大于400KHz
*/
/* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV;
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
/* 不使用bypass模式，直接用HCLK进行分频得到SDIO_CK */
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
/* 空闲时不关闭时钟电源 */
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
/* 初始化的时候暂时先把数据线配置成1根 */
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
/* 失能硬件流控制 */
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
/* 开启SDIO外设的电源 */
SDIO_SetPowerState(SDIO_PowerState_ON);
/* 使能 SDIO 时钟 */
SDIO_ClockCmd(ENABLE);
/********************************************************************************************************/
/* 下面发送一系列命令,开始卡识别流程
* CMD0: GO_IDLE_STATE(复位所以SD卡进入空闲状态)
* 没有相应
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE;
/* 没有响应 */
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;
/* 关闭等待中断 */
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
/* 则CPSM在开始发送命令之前等待数据传输结束 */
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
/* 检测是否正确接收到cmd0 */
errorstatus = CmdError();
/* 命令发送出错，返回 */
if (errorstatus != SD_OK)
{
/* CMD Response TimeOut (wait for CMDSENT flag) */
return(errorstatus);
}
/********************************************************************************************************/
/* CMD8: SEND_IF_COND
* Send CMD8 to verify SD card interface operating condition
*
* Argument: - [31:12]: Reserved (shall be set to '0')
* - [11:8] : Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
* - [7:0] : Check Pattern (recommended 0xAA)
* CMD Response: R7
*/
/* 接收到命令sd会返回这个参数 */
SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;
SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
/*检查是否接收到命令*/
errorstatus = CmdResp7Error();
/* 有响应则card遵循sd协议2.0版本 */
if (errorstatus == SD_OK)
{
/* SD Card 2.0 ，先把它定义会sdsc类型的卡 */
CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0;
/* 这个变量用作ACMD41的参数，用来询问是sdsc卡还是sdhc卡 */
SDType = SD_HIGH_CAPACITY;
}
else /* 无响应，说明是1.x的或mmc的卡 */
{
/* 发命令 CMD55 */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
}
/* CMD55
* 发送cmd55，用于检测是sd卡还是mmc卡，或是不支持的卡
* CMD 响应: R1
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
/* 是否响应，没响应的是mmc或不支持的卡 */
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
/********************************************************************************************************/
/* If errorstatus is Command TimeOut, it is a MMC card
* If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)
* or SD card 1.x
*/
if (errorstatus == SD_OK) //响应了cmd55，是sd卡，可能为1.x,可能为2.0
{
/*下面开始循环地发送sdio支持的电压范围，循环一定次数*/
/* SD CARD
* Send ACMD41 SD_APP_OP_COND with Argument 0x80100000
*/
while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
{
/* 在发送ACMD命令前都要先向卡发送CMD55
* SEND CMD55 APP_CMD with RCA as 0
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/* ACMD41
* 命令参数由支持的电压范围及HCS位组成，HCS位置一来区分卡是SDSC还是SDHC
* 0:SDSC
* 1:SDHC
* 响应：R3,对应的是OCR寄存器
*/
SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp3Error();
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/* 若卡需求电压在SDIO的供电电压范围内，会自动上电并标志pwr_up位
* 读取卡寄存器，卡状态
*/
response = SDIO_GetResponse(SDIO_RESP1);
/* 读取卡的ocr寄存器的pwr_up位，看是否已工作在正常电压 */
validvoltage = (((response >> 31) == 1) ? 1 : 0);
count++; /* 计算循环次数 */
}
if (count >= SD_MAX_VOLT_TRIAL) /* 循环检测超过一定次数还没上电 */
{
errorstatus = SD_INVALID_VOLTRANGE; /* SDIO不支持card的供电电压 */
return(errorstatus);
}
/*检查卡返回信息中的HCS位*/
/* 判断ocr中的ccs位 ，如果是sdsc卡则不执行下面的语句 */
if (response &= SD_HIGH_CAPACITY)
{
CardType = SDIO_HIGH_CAPACITY_SD_CARD; /* 把卡类型从初始化的sdsc型改为sdhc型 */
}
}/* else MMC Card */
return(errorstatus);
}
/*
* 函数名：SD_PowerOFF
* 描述 ：关掉SDIO的输出信号
* 输入 ：无
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
SD_Error SD_PowerOFF(void)
{
SD_Error errorstatus = SD_OK;
/*!< Set Power State to OFF */
SDIO_SetPowerState(SDIO_PowerState_OFF);
return(errorstatus);
}
/*
* 函数名：SD_InitializeCards
* 描述 ：初始化所有的卡或者单个卡进入就绪状态
* 输入 ：无
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：在 SD_Init() 调用，在调用power_on（）上电卡识别完毕后，调用此函数进行卡初始化
*/
SD_Error SD_InitializeCards(void)
{
SD_Error errorstatus = SD_OK;
uint16_t rca = 0x01;
if (SDIO_GetPowerState() == SDIO_PowerState_OFF)
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
/* 判断卡的类型 */
if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
{
/* Send CMD2 ALL_SEND_CID
* 响应：R2，对应CID寄存器
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp2Error();
if (SD_OK != errorstatus)
{
return(errorstatus);
}
/* 将返回的CID信息存储起来 */
CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
}
/********************************************************************************************************/
if ( (SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType)
||(SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType)
||(SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)
||(SDIO_HIGH_CAPACITY_SD_CARD == CardType) ) /* 使用的是2.0的卡 */
{
/* Send CMD3 SET_REL_ADDR with argument 0
* SD Card publishes its RCA.
* 响应：R6，对应RCA寄存器
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
/* 把接收到的卡相对地址存起来 */
errorstatus = CmdResp6Error(SD_CMD_SET_REL_ADDR, &rca);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
}
/********************************************************************************************************/
if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
{
RCA = rca;
/* Send CMD9 SEND_CSD with argument as card's RCA
* 响应:R2 对应寄存器CSD(Card-Specific Data)
*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_CSD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp2Error();
if (SD_OK != errorstatus)
{
return(errorstatus);
}
CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
}
/********************************************************************************************************/
/*全部卡初始化成功 */
errorstatus = SD_OK;
return(errorstatus);
}
/*
* 函数名：SD_GetCardInfo
* 描述 ：获取SD卡的具体信息
* 输入 ：-cardinfo 指向SD_CardInfo结构体的指针
* 这个结构里面包含了SD卡的具体信息
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
{
SD_Error errorstatus = SD_OK;
uint8_t tmp = 0;
cardinfo->CardType = (uint8_t)CardType;
cardinfo->RCA = (uint16_t)RCA;
/*!< Byte 0 */
tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
cardinfo->SD_csd.Reserved1 = tmp & 0x03;
/*!< Byte 1 */
tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
cardinfo->SD_csd.TAAC = tmp;
/*!< Byte 2 */
tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
cardinfo->SD_csd.NSAC = tmp;
/*!< Byte 3 */
tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
cardinfo->SD_csd.MaxBusClkFrec = tmp;
/*!< Byte 4 */
tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
cardinfo->SD_csd.CardComdClasses = tmp << 4;
/*!< Byte 5 */
tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
/*!< Byte 6 */
tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
cardinfo->SD_csd.Reserved2 = 0; /*!< Reserved */
if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
{
cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
/*!< Byte 7 */
tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
/*!< Byte 8 */
tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
/*!< Byte 9 */
tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
/*!< Byte 10 */
tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
cardinfo->CardCapacity *= cardinfo->CardBlockSize;
}
else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
/*!< Byte 7 */
tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
/*!< Byte 8 */
tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_csd.DeviceSize |= (tmp << 8);
/*!< Byte 9 */
tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_csd.DeviceSize |= (tmp);
/*!< Byte 10 */
tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
cardinfo->CardCapacity = (uint64_t)(cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
cardinfo->CardBlockSize = 512;
}
cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
/*!< Byte 11 */
tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
/*!< Byte 12 */
tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
/*!< Byte 13 */
tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
cardinfo->SD_csd.Reserved3 = 0;
cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
/*!< Byte 14 */
tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
cardinfo->SD_csd.ECC = (tmp & 0x03);
/*!< Byte 15 */
tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
cardinfo->SD_csd.Reserved4 = 1;
/*!< Byte 0 */
tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
cardinfo->SD_cid.ManufacturerID = tmp;
/*!< Byte 1 */
tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
cardinfo->SD_cid.OEM_AppliID = tmp << 8;
/*!< Byte 2 */
tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
cardinfo->SD_cid.OEM_AppliID |= tmp;
/*!< Byte 3 */
tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
cardinfo->SD_cid.ProdName1 = tmp << 24;
/*!< Byte 4 */
tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdName1 |= tmp << 16;
/*!< Byte 5 */
tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
cardinfo->SD_cid.ProdName1 |= tmp << 8;
/*!< Byte 6 */
tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ProdName1 |= tmp;
/*!< Byte 7 */
tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
cardinfo->SD_cid.ProdName2 = tmp;
/*!< Byte 8 */
tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdRev = tmp;
/*!< Byte 9 */
tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_cid.ProdSN = tmp << 24;
/*!< Byte 10 */
tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ProdSN |= tmp << 16;
/*!< Byte 11 */
tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
cardinfo->SD_cid.ProdSN |= tmp << 8;
/*!< Byte 12 */
tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdSN |= tmp;
/*!< Byte 13 */
tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
/*!< Byte 14 */
tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ManufactDate |= tmp;
/*!< Byte 15 */
tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
cardinfo->SD_cid.Reserved2 = 1;
return(errorstatus);
}
/**
* @brief Enables wide bus opeartion for the requeseted card if supported by
* card.
* @param WideMode: Specifies the SD card wide bus mode.
* This parameter can be one of the following values:
* @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
* @arg SDIO_BusWide_4b: 4-bit data transfer
* @arg SDIO_BusWide_1b: 1-bit data transfer
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_GetCardStatus(SD_CardStatus *cardstatus)
{
SD_Error errorstatus = SD_OK;
uint8_t tmp = 0;
errorstatus = SD_SendSDStatus((uint32_t *)SDSTATUS_Tab);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Byte 0 */
tmp = (uint8_t)((SDSTATUS_Tab[0] & 0xC0) >> 6);
cardstatus->DAT_BUS_WIDTH = tmp;
/*!< Byte 0 */
tmp = (uint8_t)((SDSTATUS_Tab[0] & 0x20) >> 5);
cardstatus->SECURED_MODE = tmp;
/*!< Byte 2 */
tmp = (uint8_t)((SDSTATUS_Tab[2] & 0xFF));
cardstatus->SD_CARD_TYPE = tmp << 8;
/*!< Byte 3 */
tmp = (uint8_t)((SDSTATUS_Tab[3] & 0xFF));
cardstatus->SD_CARD_TYPE |= tmp;
/*!< Byte 4 */
tmp = (uint8_t)(SDSTATUS_Tab[4] & 0xFF);
cardstatus->SIZE_OF_PROTECTED_AREA = tmp << 24;
/*!< Byte 5 */
tmp = (uint8_t)(SDSTATUS_Tab[5] & 0xFF);
cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 16;
/*!< Byte 6 */
tmp = (uint8_t)(SDSTATUS_Tab[6] & 0xFF);
cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 8;
/*!< Byte 7 */
tmp = (uint8_t)(SDSTATUS_Tab[7] & 0xFF);
cardstatus->SIZE_OF_PROTECTED_AREA |= tmp;
/*!< Byte 8 */
tmp = (uint8_t)((SDSTATUS_Tab[8] & 0xFF));
cardstatus->SPEED_CLASS = tmp;
/*!< Byte 9 */
tmp = (uint8_t)((SDSTATUS_Tab[9] & 0xFF));
cardstatus->PERFORMANCE_MOVE = tmp;
/*!< Byte 10 */
tmp = (uint8_t)((SDSTATUS_Tab[10] & 0xF0) >> 4);
cardstatus->AU_SIZE = tmp;
/*!< Byte 11 */
tmp = (uint8_t)(SDSTATUS_Tab[11] & 0xFF);
cardstatus->ERASE_SIZE = tmp << 8;
/*!< Byte 12 */
tmp = (uint8_t)(SDSTATUS_Tab[12] & 0xFF);
cardstatus->ERASE_SIZE |= tmp;
/*!< Byte 13 */
tmp = (uint8_t)((SDSTATUS_Tab[13] & 0xFC) >> 2);
cardstatus->ERASE_TIMEOUT = tmp;
/*!< Byte 13 */
tmp = (uint8_t)((SDSTATUS_Tab[13] & 0x3));
cardstatus->ERASE_OFFSET = tmp;
return(errorstatus);
}
/*
* 函数名：SD_EnableWideBusOperation
* 描述 ：配置卡的数据宽度(但得看卡是否支持)
* 输入 ：-WideMode 指定SD卡的数据线宽
* 具体可配置如下
* @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
* @arg SDIO_BusWide_4b: 4-bit data transfer
* @arg SDIO_BusWide_1b: 1-bit data transfer (默认)
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
SD_Error SD_EnableWideBusOperation(uint32_t WideMode)
{
SD_Error errorstatus = SD_OK;
/*!< MMC Card doesn't support this feature */
if (SDIO_MULTIMEDIA_CARD == CardType)
{
errorstatus = SD_UNSUPPORTED_FEATURE;
return(errorstatus);
}
else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
if (SDIO_BusWide_8b == WideMode) //2.0 sd不支持8bits
{
errorstatus = SD_UNSUPPORTED_FEATURE;
return(errorstatus);
}
else if (SDIO_BusWide_4b == WideMode)//4数据线模式
{
errorstatus = SDEnWideBus(ENABLE);//使用acmd6设置总线宽度，设置卡的传输方式
if (SD_OK == errorstatus)
{
/*!< Configure the SDIO peripheral */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b; //这个是设置stm32的sdio的传输方式 ，切换模式必须从卡和sdio都对应好
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
}
}
else//单数据线模式
{
errorstatus = SDEnWideBus(DISABLE);
if (SD_OK == errorstatus)
{
/*!< Configure the SDIO peripheral */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
}
}
}
return(errorstatus);
}
/*
* 函数名：SD_SelectDeselect
* 描述 ：利用cmd7，选择卡相对地址为addr的卡，取消选择其它卡
* 如果addr = 0,则取消选择所有的卡
* 输入 ：-addr 选择卡的地址
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
SD_Error SD_SelectDeselect(uint32_t addr)
{
SD_Error errorstatus = SD_OK;
/*!< Send CMD7 SDIO_SEL_DESEL_CARD */
SDIO_CmdInitStructure.SDIO_Argument = addr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SEL_DESEL_CARD);
return(errorstatus);
}
/**
* @brief Allows to read one block from a specified address in a card. The Data
* transfer can be managed by DMA mode or Polling mode.
* @note This operation should be followed by two functions to check if the
* DMA Controller and SD Card status.
* - SD_ReadWaitOperation(): this function insure that the DMA
* controller has finished all data transfer.
* - SD_GetStatus(): to check that the SD Card has finished the
* data transfer and it is ready for data.
* @param readbuff: pointer to the buffer that will contain the received data
* @param ReadAddr: Address from where data are to be read.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ReadBlock(uint8_t *readbuff, uint64_t ReadAddr, uint16_t BlockSize)
{
SD_Error errorstatus = SD_OK;
#if defined (SD_POLLING_MODE)
uint32_t count = 0, *tempbuff = (uint32_t *)readbuff;
#endif
TransferError = SD_OK;
TransferEnd = 0; //传输结束标置位，在中断服务置1
StopCondition = 0; //怎么用的？
SDIO->DCTRL = 0x0;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
ReadAddr /= 512;
}
/*******************add，没有这一段容易卡死在DMA检测中*************************************/
/* Set Block Size for Card，cmd16,
* 若是sdsc卡，可以用来设置块大小，
* 若是sdhc卡，块大小为512字节，不受cmd16影响
*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
/*********************************************************************************/
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< Send CMD17 READ_SINGLE_BLOCK */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
#if defined (SD_POLLING_MODE)
/*!< In case of single block transfer, no need of stop transfer at all.*/
/*!< Polling mode */
while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
{
if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
{
for (count = 0; count < 8; count++)
{
*(tempbuff + count) = SDIO_ReadData();
}
tempbuff += 8;
}
}
if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
errorstatus = SD_DATA_TIMEOUT;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
errorstatus = SD_DATA_CRC_FAIL;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
errorstatus = SD_RX_OVERRUN;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_STBITERR);
errorstatus = SD_START_BIT_ERR;
return(errorstatus);
}
while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
{
*tempbuff = SDIO_ReadData();
tempbuff++;
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
#elif defined (SD_DMA_MODE)
SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);
SDIO_DMACmd(ENABLE);
SD_DMA_RxConfig((uint32_t *)readbuff, BlockSize);
#endif
return(errorstatus);
}
/**
* @brief Allows to read blocks from a specified address in a card. The Data
* transfer can be managed by DMA mode or Polling mode. //分两个模式
* @note This operation should be followed by two functions to check if the
* DMA Controller and SD Card status. //dma模式时要调用以下两个函数
* - SD_ReadWaitOperation(): this function insure that the DMA
* controller has finished all data transfer.
* - SD_GetStatus(): to check that the SD Card has finished the
* data transfer and it is ready for data.
* @param readbuff: pointer to the buffer that will contain the received data.
* @param ReadAddr: Address from where data are to be read.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @param NumberOfBlocks: number of blocks to be read.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ReadMultiBlocks(uint8_t *readbuff, uint64_t ReadAddr, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
SD_Error errorstatus = SD_OK;
TransferError = SD_OK;
TransferEnd = 0;
StopCondition = 1;
SDIO->DCTRL = 0x0; //复位数据控制寄存器
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)//sdhc卡的地址以块为单位，每块512字节
{
BlockSize = 512;
ReadAddr /= 512;
}
/*!< Set Block Size for Card，cmd16,若是sdsc卡，可以用来设置块大小，若是sdhc卡，块大小为512字节，不受cmd16影响 */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT; //等待超时限制
SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize; //对于块数据传输，数据长度寄存器中的数值必须是数据块长度(见SDIO_DCTRL)的倍数
SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4; //直接用参数多好。。。SDIO_DataBlockSize_512b
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;//传输方向
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block; //传输模式
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable; //开启数据状态机
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< Send CMD18 READ_MULT_BLOCK with argument data address */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr; //起始地址
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_READ_MULT_BLOCK);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE); //开启数据传输结束中断 ，Data end (data counter, SDIDCOUNT, is zero) interrupt
SDIO_DMACmd(ENABLE); //使能dma方式
SD_DMA_RxConfig((uint32_t *)readbuff, (NumberOfBlocks * BlockSize));//配置DMA接收
return(errorstatus);
}
/**
* @brief This function waits until the SDIO DMA data transfer is finished.
* This function should be called after SDIO_ReadMultiBlocks() function
* to insure that all data sent by the card are already transferred by
* the DMA controller.
* @param None.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WaitReadOperation(void)
{
SD_Error errorstatus = SD_OK;
//等待dma传输结束
while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK))
{}
if (TransferError != SD_OK)
{
return(TransferError);
}
return(errorstatus);
}
/**
* @brief Allows to write one block starting from a specified address in a card.
* The Data transfer can be managed by DMA mode or Polling mode.
* @note This operation should be followed by two functions to check if the
* DMA Controller and SD Card status.
* - SD_ReadWaitOperation(): this function insure that the DMA
* controller has finished all data transfer.
* - SD_GetStatus(): to check that the SD Card has finished the
* data transfer and it is ready for data.
* @param writebuff: pointer to the buffer that contain the data to be transferred.
* @param WriteAddr: Address from where data are to be read.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WriteBlock(uint8_t *writebuff, uint64_t WriteAddr, uint16_t BlockSize)
{
SD_Error errorstatus = SD_OK;
#if defined (SD_POLLING_MODE)
uint32_t bytestransferred = 0, count = 0, restwords = 0;
uint32_t *tempbuff = (uint32_t *)writebuff;
#endif
TransferError = SD_OK;
TransferEnd = 0;
StopCondition = 0;
SDIO->DCTRL = 0x0;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
WriteAddr /= 512;
}
/*-------------- add , 没有这一段容易卡死在DMA检测中 -------------------*/
/* Set Block Size for Card，cmd16,
* 若是sdsc卡，可以用来设置块大小，
* 若是sdhc卡，块大小为512字节，不受cmd16影响
*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
/*********************************************************************************/
/*!< Send CMD24 WRITE_SINGLE_BLOCK */
SDIO_CmdInitStructure.SDIO_Argument = WriteAddr; //写入地址
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
//配置sdio的写数据寄存器
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4; //可用此参数代替SDIO_DataBlockSize_512b
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;//写数据，
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable; //开启数据通道状态机
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< In case of single data block transfer no need of stop command at all */
#if defined (SD_POLLING_MODE) //普通模式
while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
{
if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
{
if ((512 - bytestransferred) < 32)
{
restwords = ((512 - bytestransferred) % 4 == 0) ? ((512 - bytestransferred) / 4) : (( 512 - bytestransferred) / 4 + 1);
for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
{
SDIO_WriteData(*tempbuff);
}
}
else
{
for (count = 0; count < 8; count++)
{
SDIO_WriteData(*(tempbuff + count));
}
tempbuff += 8;
bytestransferred += 32;
}
}
}
if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
errorstatus = SD_DATA_TIMEOUT;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
errorstatus = SD_DATA_CRC_FAIL;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
errorstatus = SD_TX_UNDERRUN;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_STBITERR);
errorstatus = SD_START_BIT_ERR;
return(errorstatus);
}
#elif defined (SD_DMA_MODE) //dma模式
SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE); //数据传输结束中断
SD_DMA_TxConfig((uint32_t *)writebuff, BlockSize); //配置dma，跟rx类似
SDIO_DMACmd(ENABLE); // 使能sdio的dma请求
#endif
return(errorstatus);
}
/**
* @brief Allows to write blocks starting from a specified address in a card.
* The Data transfer can be managed by DMA mode only.
* @note This operation should be followed by two functions to check if the
* DMA Controller and SD Card status.
* - SD_ReadWaitOperation(): this function insure that the DMA
* controller has finished all data transfer.
* - SD_GetStatus(): to check that the SD Card has finished the
* data transfer and it is ready for data.
* @param WriteAddr: Address from where data are to be read.
* @param writebuff: pointer to the buffer that contain the data to be transferred.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @param NumberOfBlocks: number of blocks to be written.
* @retval SD_Error: SD Card Error code.
*/
/*
* 函数名：SD_WriteMultiBlocks
* 描述 ：从输入的起始地址开始，向卡写入多个数据块，
只能在DMA模式下使用这个函数
注意：调用这个函数后一定要调用
SD_WaitWriteOperation（）来等待DMA传输结束
和 SD_GetStatus() 检测卡与SDIO的FIFO间是否已经完成传输
* 输入 ：
* @param WriteAddr: Address from where data are to be read.
* @param writebuff: pointer to the buffer that contain the data to be transferred.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @param NumberOfBlocks: number of blocks to be written.
* 输出 ：SD错误类型
*/
SD_Error SD_WriteMultiBlocks(uint8_t *writebuff, uint64_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
SD_Error errorstatus = SD_OK;
__IO uint32_t count = 0;
TransferError = SD_OK;
TransferEnd = 0;
StopCondition = 1;
SDIO->DCTRL = 0x0;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
WriteAddr /= 512;
}
/*******************add，没有这一段容易卡死在DMA检测中*************************************/
/*!< Set Block Size for Card，cmd16,若是sdsc卡，可以用来设置块大小，若是sdhc卡，块大小为512字节，不受cmd16影响 */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
/*********************************************************************************/
/*!< To improve performance */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD; // cmd55
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< To improve performance */// pre-erased，在多块写入时可发送此命令进行预擦除
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks; //参数为将要写入的块数目
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT; //cmd23
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send CMD25 WRITE_MULT_BLOCK with argument data address */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)WriteAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);
SDIO_DMACmd(ENABLE);
SD_DMA_TxConfig((uint32_t *)writebuff, (NumberOfBlocks * BlockSize));
return(errorstatus);
}
/**
* @brief This function waits until the SDIO DMA data transfer is finished.
* This function should be called after SDIO_WriteBlock() and
* SDIO_WriteMultiBlocks() function to insure that all data sent by the
* card are already transferred by the DMA controller.
* @param None.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WaitWriteOperation(void)
{
SD_Error errorstatus = SD_OK;
//等待dma是否传输结束
while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK))
{}
if (TransferError != SD_OK)
{
return(TransferError);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/**
* @brief Gets the cuurent data transfer state.
* @param None
* @retval SDTransferState: Data Transfer state.
* This value can be:
* - SD_TRANSFER_OK: No data transfer is acting
* - SD_TRANSFER_BUSY: Data transfer is acting
*/
SDTransferState SD_GetTransferState(void)
{
if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
{
return(SD_TRANSFER_BUSY);
}
else
{
return(SD_TRANSFER_OK);
}
}
/**
* @brief Aborts an ongoing data transfer.
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_StopTransfer(void)
{
SD_Error errorstatus = SD_OK;
/*!< Send CMD12 STOP_TRANSMISSION */
SDIO->ARG = 0x0;
SDIO->CMD = 0x44C;
errorstatus = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
return(errorstatus);
}
/**
* @brief Allows to erase memory area specified for the given card.
* @param startaddr: the start address.
* @param endaddr: the end address.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)
{
SD_Error errorstatus = SD_OK;
uint32_t delay = 0;
__IO uint32_t maxdelay = 0;
uint8_t cardstate = 0;
/*!< Check if the card coomnd class supports erase command */
if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
maxdelay = 120000 / ((SDIO->CLKCR & 0xFF) + 2);//延时，根据时钟分频设置来计算
if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED) //卡已上锁
{
errorstatus = SD_LOCK_UNLOCK_FAILED;
return(errorstatus);
}
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)//sdhc卡，为什么要 /512？详见2.0协议page52
{ //在sdhc卡，地址参数为块地址，每块512字节，sdsc卡地址为字节地址
startaddr /= 512;
endaddr /= 512;
}
/*!< According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
/*!< Send CMD32 SD_ERASE_GRP_START with argument as addr */
SDIO_CmdInitStructure.SDIO_Argument = startaddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_START;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //R1
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_START);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send CMD33 SD_ERASE_GRP_END with argument as addr */
SDIO_CmdInitStructure.SDIO_Argument = endaddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_END;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_END);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
}
/*!< Send CMD38 ERASE */
SDIO_CmdInitStructure.SDIO_Argument = 0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ERASE;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_ERASE);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
for (delay = 0; delay < maxdelay; delay++)
{}
/*!< Wait till the card is in programming state */
errorstatus = IsCardProgramming(&cardstate);
while ((errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
{
errorstatus = IsCardProgramming(&cardstate);
}
return(errorstatus);
}
/**
* @brief Returns the current card's status.
* @param pcardstatus: pointer to the buffer that will contain the SD card
* status (Card Status register).
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SendStatus(uint32_t *pcardstatus)
{
SD_Error errorstatus = SD_OK;
SDIO->ARG = (uint32_t) RCA << 16;
SDIO->CMD = 0x44D;
errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
*pcardstatus = SDIO->RESP1;
return(errorstatus);
}
/**
* @brief Returns the current SD card's status.
* @param psdstatus: pointer to the buffer that will contain the SD card status
* (SD Status register).
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SendSDStatus(uint32_t *psdstatus)
{
SD_Error errorstatus = SD_OK;
uint32_t count = 0;
if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
{
errorstatus = SD_LOCK_UNLOCK_FAILED;
return(errorstatus);
}
/*!< Set block size for card if it is not equal to current block size for card. */
SDIO_CmdInitStructure.SDIO_Argument = 64;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< CMD55 */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = 64;
SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< Send ACMD13 SD_APP_STAUS with argument as card's RCA.*/
SDIO_CmdInitStructure.SDIO_Argument = 0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_STAUS;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SD_APP_STAUS);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
{
if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
{
for (count = 0; count < 8; count++)
{
*(psdstatus + count) = SDIO_ReadData();
}
psdstatus += 8;
}
}
if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
errorstatus = SD_DATA_TIMEOUT;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
errorstatus = SD_DATA_CRC_FAIL;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
errorstatus = SD_RX_OVERRUN;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_STBITERR);
errorstatus = SD_START_BIT_ERR;
return(errorstatus);
}
while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
{
*psdstatus = SDIO_ReadData();
psdstatus++;
}
/*!< Clear all the static status flags*/
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/*
* 函数名：SD_ProcessIRQSrc
* 描述 ：数据传输结束中断
* 输入 ：无
* 输出 ：SD错误类型
*/
SD_Error SD_ProcessIRQSrc(void)
{
if (StopCondition == 1) //什么时候置1了？
{
SDIO->ARG = 0x0; //命令参数寄存器
SDIO->CMD = 0x44C; // 命令寄存器： 0100 01 001100
// [7:6] [5:0]
// CPSMEN WAITRESP CMDINDEX
// 开启命令状态机 短响应 cmd12 STOP_ TRANSMISSION
TransferError = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
}
else
{
TransferError = SD_OK;
}
SDIO_ClearITPendingBit(SDIO_IT_DATAEND); //清中断
SDIO_ITConfig(SDIO_IT_DATAEND, DISABLE); //关闭sdio中断使能
TransferEnd = 1;
return(TransferError);
}
/*
* 函数名：CmdError
* 描述 ：对CMD0命令的检查。
* 输入 ：无
* 输出 ：SD错误类型
*/
static SD_Error CmdError(void)
{
SD_Error errorstatus = SD_OK;
uint32_t timeout;
timeout = SDIO_CMD0TIMEOUT; /*!< 10000 */
/*检查命令是否已发送*/
while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))
{
timeout--;
}
if (timeout == 0)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除静态标志位
return(errorstatus);
}
/*
* 函数名：CmdResp7Error
* 描述 ：对响应类型为R7的命令进行检查
* 输入 ：无
* 输出 ：SD错误类型
*/
static SD_Error CmdResp7Error(void)
{
SD_Error errorstatus = SD_OK;
uint32_t status;
uint32_t timeout = SDIO_CMD0TIMEOUT;
status = SDIO->STA; //读取SDIO状态寄存器 ，此状态寄存器是stm32的寄存器
/* Command response received (CRC check failed) ：Command response received (CRC check passed)：Command response timeout */
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0))
{
timeout--;
status = SDIO->STA;
}
//卡不响应cmd8
if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT))
{
/*!< Card is not V2.0 complient or card does not support the set voltage range */
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
if (status & SDIO_FLAG_CMDREND)
{
/*!< Card is SD V2.0 compliant */
errorstatus = SD_OK;
SDIO_ClearFlag(SDIO_FLAG_CMDREND);
return(errorstatus);
}
return(errorstatus);
}
/*
* 函数名：CmdResp1Error
* 描述 ：对响应类型为R1的命令进行检查
* 输入 ：无
* 输出 ：SD错误类型
*/
static SD_Error CmdResp1Error(uint8_t cmd) //传入的参数有什么用？
{
/*不是这些状态就等待 */
while (!(SDIO->STA & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
{
}
SDIO->ICR = SDIO_STATIC_FLAGS; //清中断标志
return (SD_Error)(SDIO->RESP1 & SD_OCR_ERRORBITS); //判断是否在供电范围
}
/*
* 函数名：CmdResp3Error
* 描述 ：对响应类型为R3的命令进行检查
* 输入 ：无
* 输出 ：SD错误类型
*/
static SD_Error CmdResp3Error(void)
{
SD_Error errorstatus = SD_OK;
uint32_t status;
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
{
status = SDIO->STA;
}
if (status & SDIO_FLAG_CTIMEOUT)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/*
* 函数名：CmdResp2Error
* 描述 ：对响应类型为R2的命令进行检查
* 输入 ：无
* 输出 ：SD错误类型
*/
static SD_Error CmdResp2Error(void)
{
SD_Error errorstatus = SD_OK;
uint32_t status;
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
{
status = SDIO->STA;
}
if (status & SDIO_FLAG_CTIMEOUT)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
else if (status & SDIO_FLAG_CCRCFAIL)
{
errorstatus = SD_CMD_CRC_FAIL;
SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/*
* 函数名：CmdResp6Error
* 描述 ：对响应类型为R6的命令进行检查
* 输入 ：cmd 命令索引号，
prca 用来存储接收到的卡相对地址
* 输出 ：SD错误类型
*/
static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca)
{
SD_Error errorstatus = SD_OK;
uint32_t status;
uint32_t response_r1;
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
{
status = SDIO->STA;
}
if (status & SDIO_FLAG_CTIMEOUT)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
else if (status & SDIO_FLAG_CCRCFAIL)
{
errorstatus = SD_CMD_CRC_FAIL;
SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
return(errorstatus);
}
/*!< Check response received is of desired command */
if (SDIO_GetCommandResponse() != cmd) //检测是否接收到正常命令
{
errorstatus = SD_ILLEGAL_CMD;
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
/*!< We have received response, retrieve it. */
response_r1 = SDIO_GetResponse(SDIO_RESP1);
/*以下状态全为0表明成功接收到card返回的rca */
if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))
{
*prca = (uint16_t) (response_r1 >> 16);//右移16位，就是接收到的返回rca
return(errorstatus);
}
if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)
{
return(SD_GENERAL_UNKNOWN_ERROR);
}
if (response_r1 & SD_R6_ILLEGAL_CMD)
{
return(SD_ILLEGAL_CMD);
}
if (response_r1 & SD_R6_COM_CRC_FAILED)
{
return(SD_COM_CRC_FAILED);
}
return(errorstatus);
}
/*
* 函数名：SDEnWideBus
* 描述 ：使能或关闭SDIO的4bit模式
* 输入 ：新状态 ENABLE 或DISABLE
* 输出 ：SD错误类型
*/
static SD_Error SDEnWideBus(FunctionalState NewState)
{
SD_Error errorstatus = SD_OK;
uint32_t scr[2] = {0, 0};
if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED) //检测卡是否已上锁
{
errorstatus = SD_LOCK_UNLOCK_FAILED;
return(errorstatus);
}
/*!< Get SCR Register */
errorstatus = FindSCR(RCA, scr);//获取scr寄存器内容到scr数组中
if (errorstatus != SD_OK) //degug,crc错误，scr读取不了数值
{
return(errorstatus);
}
/*!< If wide bus operation to be enabled */
if (NewState == ENABLE)
{
/*!< If requested card supports wide bus operation */
if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO) //判断卡是否支持4位方式
{
/*!< Send CMD55 APP_CMD with argument as card's RCA.*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
/*开启4bit模式的命令acmd6*/
SDIO_CmdInitStructure.SDIO_Argument = 0x2;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
return(errorstatus);
}
else
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
} /*!< If wide bus operation to be disabled */
else
{
/*!< If requested card supports 1 bit mode operation */
if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)
{
/*!< Send CMD55 APP_CMD with argument as card's RCA.*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send ACMD6 APP_CMD with argument as 0 for single bus mode */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
return(errorstatus);
}
else
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
}
}
/*
* 函数名：IsCardProgramming
* 描述 ：检测SD卡是不是正在进行内部读写操作
* 输入 ：用来装载SD state状态的指针
* 输出 ：SD错误类型
*/
static SD_Error IsCardProgramming(uint8_t *pstatus)
{
SD_Error errorstatus = SD_OK;
__IO uint32_t respR1 = 0, status = 0;
/*cmd13让卡发送卡状态寄存器，存储到m3的位置为sdio_sta寄存器*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16; //卡相对地址参数
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
{
status = SDIO->STA;
}
/*一系列的状态判断*/
if (status & SDIO_FLAG_CTIMEOUT)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
else if (status & SDIO_FLAG_CCRCFAIL)
{
errorstatus = SD_CMD_CRC_FAIL;
SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
return(errorstatus);
}
status = (uint32_t)SDIO_GetCommandResponse();
/*!< Check response received is of desired command */
if (status != SD_CMD_SEND_STATUS)
{
errorstatus = SD_ILLEGAL_CMD;
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
/*!< We have received response, retrieve it for analysis */
respR1 = SDIO_GetResponse(SDIO_RESP1);
/*!< Find out card status */
*pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F); //status[12:9] :cardstate
if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
{
return(errorstatus);
}
if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)
{
return(SD_ADDR_OUT_OF_RANGE);
}
if (respR1 & SD_OCR_ADDR_MISALIGNED)
{
return(SD_ADDR_MISALIGNED);
}
if (respR1 & SD_OCR_BLOCK_LEN_ERR)
{
return(SD_BLOCK_LEN_ERR);
}
if (respR1 & SD_OCR_ERASE_SEQ_ERR)
{
return(SD_ERASE_SEQ_ERR);
}
if (respR1 & SD_OCR_BAD_ERASE_PARAM)
{
return(SD_BAD_ERASE_PARAM);
}
if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)
{
return(SD_WRITE_PROT_VIOLATION);
}
if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)
{
return(SD_LOCK_UNLOCK_FAILED);
}
if (respR1 & SD_OCR_COM_CRC_FAILED)
{
return(SD_COM_CRC_FAILED);
}
if (respR1 & SD_OCR_ILLEGAL_CMD)
{
return(SD_ILLEGAL_CMD);
}
if (respR1 & SD_OCR_CARD_ECC_FAILED)
{
return(SD_CARD_ECC_FAILED);
}
if (respR1 & SD_OCR_CC_ERROR)
{
return(SD_CC_ERROR);
}
if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
{
return(SD_GENERAL_UNKNOWN_ERROR);
}
if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)
{
return(SD_STREAM_READ_UNDERRUN);
}
if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)
{
return(SD_STREAM_WRITE_OVERRUN);
}
if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)
{
return(SD_CID_CSD_OVERWRITE);
}
if (respR1 & SD_OCR_WP_ERASE_SKIP)
{
return(SD_WP_ERASE_SKIP);
}
if (respR1 & SD_OCR_CARD_ECC_DISABLED)
{
return(SD_CARD_ECC_DISABLED);
}
if (respR1 & SD_OCR_ERASE_RESET)
{
return(SD_ERASE_RESET);
}
if (respR1 & SD_OCR_AKE_SEQ_ERROR)
{
return(SD_AKE_SEQ_ERROR);
}
return(errorstatus);
}
/*
* 函数名：FindSCR
* 描述 ：读取SD卡的SCR寄存器的内容
* 输入 ：RCA卡相对地址
pscr 用来装载SCR内容的指针
* 输出 ：SD错误类型
*/
static SD_Error FindSCR(uint16_t rca, uint32_t *pscr)
{
uint32_t index = 0;
SD_Error errorstatus = SD_OK;
uint32_t tempscr[2] = {0, 0};
/*!< Set Block Size To 8 Bytes */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8; //块大小如果是sdhc卡是无法改变块大小的 //原参数8
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN; // cmd16
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send CMD55 APP_CMD with argument as card's RCA */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*设置数据接收寄存器*/
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = 8; //8byte,64位
SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b ; //块大小8byte
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< Send ACMD51 SD_APP_SEND_SCR with argument as 0 */
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_SEND_SCR;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SD_APP_SEND_SCR);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*等待接收数据 */
/*不是这些情况就循环*/
/*上溢出错 //数据crc失败 //数据超时 //已接收数据块，crc检测成功 //没有在所有数据线上检测到起始信号*/
while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND| SDIO_FLAG_STBITERR)))
{
if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) //接收到的数据是否可用
{
*(tempscr + index) = SDIO_ReadData();
index++;
/* //add。这段在官方源码没有加判断 */
if(index > 1 )
break;
}
}
if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
errorstatus = SD_DATA_TIMEOUT;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
errorstatus = SD_DATA_CRC_FAIL;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
errorstatus = SD_RX_OVERRUN;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_STBITERR);
errorstatus = SD_START_BIT_ERR;
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
*(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);
*(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);
return(errorstatus);
}
/**
* @brief Converts the number of bytes in power of two and returns the power.
* @param NumberOfBytes: number of bytes.
* @retval None
*/
uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes)
{
uint8_t count = 0;
while (NumberOfBytes != 1)
{
NumberOfBytes >>= 1;
count++;
}
return(count);
}
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
2.2.3 bmp驱动
#include "ff.h"
#include "ili9341_lcd.h"
#include "bmp.h"
#define RGB24TORGB16(R,G,B) ((unsigned short int)((((R)>>3)<<11) | (((G)>>2)<<5) | ((B)>>3)))
BYTE pColorData[960]; /* 一行真彩色数据缓存 320 * 3 = 960 */
FIL bmpfsrc, bmpfdst;
FRESULT bmpres;
/* 如果不需要打印bmp相关的提示信息,将printf注释掉即可
* 如要用printf()，需将串口驱动文件包含进来
*/
#define BMP_DEBUG_PRINTF(FORMAT,...) printf(FORMAT,##__VA_ARGS__)
/* 打印BMP文件的头信息，用于调试 */
static void showBmpHead(BITMAPFILEHEADER* pBmpHead)
{
BMP_DEBUG_PRINTF("位图文件头:\r\n");
BMP_DEBUG_PRINTF("文件大小:%ld\r\n",(*pBmpHead).bfSize);
BMP_DEBUG_PRINTF("保留字:%d\r\n",(*pBmpHead).bfReserved1);
BMP_DEBUG_PRINTF("保留字:%d\r\n",(*pBmpHead).bfReserved2);
BMP_DEBUG_PRINTF("实际位图数据的偏移字节数:%ld\r\n",(*pBmpHead).bfOffBits);
BMP_DEBUG_PRINTF("\r\n");
}
/* 打印BMP文件的头信息，用于调试 */
static void showBmpInforHead(tagBITMAPINFOHEADER* pBmpInforHead)
{
BMP_DEBUG_PRINTF("位图信息头:\r\n");
BMP_DEBUG_PRINTF("结构体的长度:%ld\r\n",(*pBmpInforHead).biSize);
BMP_DEBUG_PRINTF("位图宽:%ld\r\n",(*pBmpInforHead).biWidth);
BMP_DEBUG_PRINTF("位图高:%ld\r\n",(*pBmpInforHead).biHeight);
BMP_DEBUG_PRINTF("biPlanes平面数:%d\r\n",(*pBmpInforHead).biPlanes);
BMP_DEBUG_PRINTF("biBitCount采用颜色位数:%d\r\n",(*pBmpInforHead).biBitCount);
BMP_DEBUG_PRINTF("压缩方式:%ld\r\n",(*pBmpInforHead).biCompression);
BMP_DEBUG_PRINTF("biSizeImage实际位图数据占用的字节数:%ld\r\n",(*pBmpInforHead).biSizeImage);
BMP_DEBUG_PRINTF("X方向分辨率:%ld\r\n",(*pBmpInforHead).biXPelsPerMeter);
BMP_DEBUG_PRINTF("Y方向分辨率:%ld\r\n",(*pBmpInforHead).biYPelsPerMeter);
BMP_DEBUG_PRINTF("使用的颜色数:%ld\r\n",(*pBmpInforHead).biClrUsed);
BMP_DEBUG_PRINTF("重要颜色数:%ld\r\n",(*pBmpInforHead).biClrImportant);
BMP_DEBUG_PRINTF("\r\n");
}
/**
* @brief 设置ILI9341的截取BMP图片
* @param x ：在扫描模式1下截取区域的起点X坐标
* @param y ：在扫描模式1下截取区域的起点Y坐标
* @param pic_name ：BMP存放的全路径
* @retval 无
*/
void LCD_Show_BMP ( uint16_t x, uint16_t y, char * pic_name )
{
int i, j, k;
int width, height, l_width;
BYTE red,green,blue;
BITMAPFILEHEADER bitHead;
BITMAPINFOHEADER bitInfoHead;
WORD fileType;
unsigned int read_num;
bmpres = f_open( &bmpfsrc , (char *)pic_name, FA_OPEN_EXISTING | FA_READ);
/*-------------------------------------------------------------------------------------------------------*/
if(bmpres == FR_OK)
{
BMP_DEBUG_PRINTF("打开文件成功\r\n");
/* 读取文件头信息 两个字节*/
f_read(&bmpfsrc,&fileType,sizeof(WORD),&read_num);
/* 判断是不是bmp文件 "BM"*/
if(fileType != 0x4d42)
{
BMP_DEBUG_PRINTF("这不是一个 .bmp 文件!\r\n");
return;
}
else
{
BMP_DEBUG_PRINTF("这是一个 .bmp 文件\r\n");
}
/* 读取BMP文件头信息*/
f_read(&bmpfsrc,&bitHead,sizeof(tagBITMAPFILEHEADER),&read_num);
showBmpHead(&bitHead);
/* 读取位图信息头信息 */
f_read(&bmpfsrc,&bitInfoHead,sizeof(BITMAPINFOHEADER),&read_num);
showBmpInforHead(&bitInfoHead);
}
else
{
BMP_DEBUG_PRINTF("打开文件失败!错误代码：bmpres = %d \r\n",bmpres);
return;
}
/*-------------------------------------------------------------------------------------------------------*/
width = bitInfoHead.biWidth;
height = bitInfoHead.biHeight;
/* 计算位图的实际宽度并确保它为32的倍数 */
l_width = WIDTHBYTES(width* bitInfoHead.biBitCount);
if(l_width > 960)
{
BMP_DEBUG_PRINTF("\n 本图片太大，无法在液晶屏上显示 (<=320)\n");
return;
}
/* 开一个图片大小的窗口*/
ILI9341_OpenWindow(x, y, width, height);
ILI9341_Write_Cmd (CMD_SetPixel );
/* 判断是否是24bit真彩色图 */
if( bitInfoHead.biBitCount >= 24 )
{
for ( i = 0; i < height; i ++ )
{
/*从文件的后面读起，BMP文件的原始图像方向为右下角到左上角*/
f_lseek ( & bmpfsrc, bitHead .bfOffBits + ( height - i - 1 ) * l_width );
/* 读取一行bmp的数据到数组pColorData里面 */
f_read ( & bmpfsrc, pColorData, l_width, & read_num );
for(j=0; j<width; j++) //一行有效信息
{
k = j*3; //一行中第K个像素的起点
red = pColorData[k+2];
green = pColorData[k+1];
blue = pColorData[k];
ILI9341_Write_Data ( RGB24TORGB16 ( red, green, blue ) ); //写入LCD-GRAM
}
}
}
else
{
BMP_DEBUG_PRINTF("这不是一个24位真彩色BMP文件！");
return ;
}
f_close(&bmpfsrc);
}
/**
* @brief 设置ILI9341的截取BMP图片
* @param x ：截取区域的起点X坐标
* @param y ：截取区域的起点Y坐标
* @param Width ：区域宽度
* @param Height ：区域高度
* @retval 无
* 该参数为以下值之一：
* @arg 0 :截图成功
* @arg -1 :截图失败
*/
int Screen_Shot( uint16_t x, uint16_t y, uint16_t Width, uint16_t Height, char * filename)
{
/* bmp 文件头 54个字节 */
unsigned char header[54] =
{
0x42, 0x4d, 0, 0, 0, 0,
0, 0, 0, 0, 54, 0,
0, 0, 40,0, 0, 0,
0, 0, 0, 0, 0, 0,
0, 0, 1, 0, 24, 0,
0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0
};
int i;
int j;
long file_size;
long width;
long height;
unsigned char r,g,b;
unsigned int mybw;
unsigned int read_data;
char kk[4]={0,0,0,0};
uint8_t ucAlign;//
/* 宽*高 +补充的字节 + 头部信息 */
file_size = (long)Width * (long)Height * 3 + Height*(Width%4) + 54;
/* 文件大小 4个字节 */
header[2] = (unsigned char)(file_size &0x000000ff);
header[3] = (file_size >> 8) & 0x000000ff;
header[4] = (file_size >> 16) & 0x000000ff;
header[5] = (file_size >> 24) & 0x000000ff;
/* 位图宽 4个字节 */
width=Width;
header[18] = width & 0x000000ff;
header[19] = (width >> 8) &0x000000ff;
header[20] = (width >> 16) &0x000000ff;
header[21] = (width >> 24) &0x000000ff;
/* 位图高 4个字节 */
height = Height;
header[22] = height &0x000000ff;
header[23] = (height >> 8) &0x000000ff;
header[24] = (height >> 16) &0x000000ff;
header[25] = (height >> 24) &0x000000ff;
/* 新建一个文件 */
bmpres = f_open( &bmpfsrc , (char*)filename, FA_CREATE_ALWAYS | FA_WRITE );
/* 新建文件之后要先关闭再打开才能写入 */
f_close(&bmpfsrc);
bmpres = f_open( &bmpfsrc , (char*)filename, FA_OPEN_EXISTING | FA_WRITE);
if ( bmpres == FR_OK )
{
/* 将预先定义好的bmp头部信息写进文件里面 */
bmpres = f_write(&bmpfsrc, header,sizeof(unsigned char)*54, &mybw);
ucAlign = Width % 4;
for(i=0; i<Height; i++)
{
for(j=0; j<Width; j++)
{
read_data = ILI9341_GetPointPixel ( x + j, y + Height - 1 - i );
r = GETR_FROM_RGB16(read_data);
g = GETG_FROM_RGB16(read_data);
b = GETB_FROM_RGB16(read_data);
bmpres = f_write(&bmpfsrc, &b,sizeof(unsigned char), &mybw);
bmpres = f_write(&bmpfsrc, &g,sizeof(unsigned char), &mybw);
bmpres = f_write(&bmpfsrc, &r,sizeof(unsigned char), &mybw);
}
if( ucAlign ) /* 如果不是4字节对齐 */
bmpres = f_write ( & bmpfsrc, kk, sizeof(unsigned char) * ( ucAlign ), & mybw );
}/* 截屏完毕 */
f_close(&bmpfsrc);
return 0;
}
else/* 截屏失败 */
return -1;
}
2.2.4 主函数测试
#include "stm32f10x.h"
#include "ili9341_lcd.h"
#include "usart.h"
#include "key.h"
#include "led.h"
#include "bmp.h"
#include "ff.h"
#include <stdio.h>
FATFS fs;
FRESULT res_sd;
int main ( void )
{
ILI9341_Init (); //LCD 初始化
LCD_SetFont(&Font8x16);
LCD_SetColors(RED,BLACK);
ILI9341_Clear(0,0,LCD_X_LENGTH,LCD_Y_LENGTH); /* 清屏，显示全黑 */
ILI9341_GramScan ( 6 );
USART_Config();
LED_GPIO_Config();
Key_GPIO_Config();
printf("\r\n ********** 显示BMP文件及截图*********** \r\n");
printf("\r\n 实验前请确保SD卡的目录下具有实验使用的BMP图片文件, \r\n");
printf("\r\n 按下板子的KEY1按键可以生成屏幕截图 \r\n");
/*挂载sd文件系统*/
res_sd = f_mount(&fs,"0:",1);
if(res_sd != FR_OK)
{
printf("\r\n请给开发板插入已格式化成fat格式的SD卡。\r\n");
}
ILI9341_GramScan ( 6 );
/*显示SD卡内的BMP文件，请确保SD卡该路径下有该文件，
可在工程目录下的“需要拷贝到SD卡”的文件夹中复制到SD卡的该目录*/
LCD_Show_BMP(0,0,"0:wildfire_1.bmp");
while ( 1 )
{
/*检测按键*/
if( Key_Scan(KEY1_GPIO_PORT,KEY1_GPIO_PIN) == KEY_ON )
{
static uint8_t name_count = 0;
char name[40];
//用来设置截图名字，防止重复，实际应用中可以使用系统时间来命名。
name_count++;
sprintf(name,"0:screen_shot_%d.bmp",name_count);
LED_BLUE;
printf("\r\n正在截图...");
/*截图必需设置好液晶显示方向和截图窗口*/
ILI9341_GramScan ( 6 );
if(Screen_Shot(0,0,LCD_X_LENGTH,LCD_Y_LENGTH,name) == 0)
{
printf("\r\n截图成功！");
LED_GREEN;
}
else
{
printf("\r\n截图失败！");
LED_RED;
}
}
}
}
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