基于STM32F429的TFT0.96屏幕驱动
1.介绍TFT
2.Cube配置
该屏幕是用SPI通信的，但没有MISO引脚，意思是说该屏幕只能接收数据，但无法读取里面的数据，理论上说四线就能启动，但我弄不出，只能用六线。
在Cube上只要开启六个GPIO口作为通信引脚就行了。
3.驱动程序
如果都是用ST7735芯片驱动的，不管屏幕是多少寸的，都能驱动
lcd.c
#include "lcd.h" #include "stm32f4xx.h" //默认为竖屏 //_lcd_dev lcddev; //SPI_HandleTypedef hSPIx; //画笔颜色,背景颜色 uint16_t POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF; _lcd_dev lcddev_2; SPI_HandleTypedef hSPIx; void vSPI_LCD_Handle_Init(void) { //引脚 Pin： hSPIx.pSCK_Port = SPI_SCK_GPIO_Port; //SCK hSPIx.uSCK_Pin = SPI_SCK_Pin; hSPIx.pMOSI_Port = SPI_SDA_GPIO_Port; //MOSI hSPIx.uMOSI_Pin = SPI_SDA_Pin; } //STM32_模拟SPI写一个字节数据底层函数 void SPIv_WriteData(uint8_t Data) { unsigned char i=0; for ( i = 8; i > 0; i --) { LCD_SCL_CLR; if ( Data & 0x80) { LCD_SDA_SET; } //输出数据 else { LCD_SDA_CLR; } LCD_SCL_SET; Data <<= 1; } } //向液晶屏总线写入写8位数据 void TFT_WR_DATA(uint8_t data) { LCD_CS_CLR; //软件控制片选信号 LCD_RS_SET; SPIv_WriteData(data); LCD_CS_SET; //软件控制片选信号 } // 向液晶屏总线写入写16位指令 void TFT_WR_REG(uint16_t data) { LCD_CS_CLR; //软件控制片选信号 LCD_RS_CLR; SPIv_WriteData(data); LCD_CS_SET; //软件控制片选信号 } //写寄存器数据 void TFT_WriteReg(uint16_t LCD_Reg, uint16_t LCD_RegValue) { TFT_WR_REG(LCD_Reg); TFT_WR_DATA(LCD_RegValue); } //开始写GRAM 在给液晶屏传送RGB数据前，应该发送写GRAM指令 void TFT_WriteRAM_Prepare(void) { TFT_WR_REG(lcddev_2.wramcmd); } void TFT_RESET(void) //液晶屏复位 { LCD_RST_SET; TFT_WR_REG(0x01); HAL_Delay(50); } //设置LCD参数 //方便进行横竖屏模式切换 void TFT_SetParam(void) { lcddev_2.wramcmd=0x2C; lcddev_2.dir=0;//竖屏 lcddev_2.width=200; lcddev_2.height=200; lcddev_2.setxcmd=0x2A; lcddev_2.setycmd=0x2B; TFT_WriteReg(0x36,0xC8); } void TFT_SetWindows(uint16_t xStar, uint16_t yStar,uint16_t xEnd,uint16_t yEnd) { TFT_WR_REG(lcddev_2.setxcmd); TFT_WR_DATA(xStar>>8); TFT_WR_DATA(0x00FF&xStar+2); TFT_WR_DATA(xEnd>>8); TFT_WR_DATA(0x00FF&xEnd+2); TFT_WR_REG(lcddev_2.setycmd); TFT_WR_DATA(yStar>>8); TFT_WR_DATA(0x00FF&yStar+3); TFT_WR_DATA(yEnd>>8); TFT_WR_DATA(0x00FF&yEnd+3); TFT_WriteRAM_Prepare(); //开始写入GRAM } // 8位总线下如何写入一个16位数据 void TFT_WR_DATA_16Bit(uint16_t data) { LCD_CS_CLR; LCD_RS_SET; SPIv_WriteData(data>>8); SPIv_WriteData(data); LCD_CS_SET; } // LCD全屏填充清屏函数 void TFT_Clear(uint16_t Color) { uint16_t i,j; TFT_SetWindows(0, 0, lcddev_2.width-1, lcddev_2.height-1); for (i = 0; i < lcddev_2.width; i ++) { for (j = 0; j < lcddev_2.height; j ++) TFT_WR_DATA_16Bit(Color); //写入数据 } } void TFT_Init(void) { TFT_RESET(); //液晶屏复位 //************* Start Initial Sequence **********// //开始初始化液晶屏 TFT_WR_REG(0x11);//Sleep exit HAL_Delay(120); //ST7735R Frame Rate TFT_WR_REG(0xB1); TFT_WR_DATA(0x01); TFT_WR_DATA(0x2C); TFT_WR_DATA(0x2D); TFT_WR_REG(0xB2); TFT_WR_DATA(0x01); TFT_WR_DATA(0x2C); TFT_WR_DATA(0x2D); TFT_WR_REG(0xB3); TFT_WR_DATA(0x01); TFT_WR_DATA(0x2C); TFT_WR_DATA(0x2D); TFT_WR_DATA(0x01); TFT_WR_DATA(0x2C); TFT_WR_DATA(0x2D); TFT_WR_REG(0xB4); //Column inversion TFT_WR_DATA(0x07); //ST7735R Power Sequence TFT_WR_REG(0xC0); TFT_WR_DATA(0xA2); TFT_WR_DATA(0x02); TFT_WR_DATA(0x84); TFT_WR_REG(0xC1); TFT_WR_DATA(0xC5); TFT_WR_REG(0xC2); TFT_WR_DATA(0x0A); TFT_WR_DATA(0x00); TFT_WR_REG(0xC3); TFT_WR_DATA(0x8A); TFT_WR_DATA(0x2A); TFT_WR_REG(0xC4); TFT_WR_DATA(0x8A); TFT_WR_DATA(0xEE); TFT_WR_REG(0xC5); //VCOM TFT_WR_DATA(0x0E); TFT_WR_REG(0x36); //MX, MY, RGB mode TFT_WR_DATA(0xC8); //ST7735R Gamma Sequence TFT_WR_REG(0xe0); TFT_WR_DATA(0x0f); TFT_WR_DATA(0x1a); TFT_WR_DATA(0x0f); TFT_WR_DATA(0x18); TFT_WR_DATA(0x2f); TFT_WR_DATA(0x28); TFT_WR_DATA(0x20); TFT_WR_DATA(0x22); TFT_WR_DATA(0x1f); TFT_WR_DATA(0x1b); TFT_WR_DATA(0x23); TFT_WR_DATA(0x37); TFT_WR_DATA(0x00); TFT_WR_DATA(0x07); TFT_WR_DATA(0x02); TFT_WR_DATA(0x10); TFT_WR_REG(0xe1); TFT_WR_DATA(0x0f); TFT_WR_DATA(0x1b); TFT_WR_DATA(0x0f); TFT_WR_DATA(0x17); TFT_WR_DATA(0x33); TFT_WR_DATA(0x2c); TFT_WR_DATA(0x29); TFT_WR_DATA(0x2e); TFT_WR_DATA(0x30); TFT_WR_DATA(0x30); TFT_WR_DATA(0x39); TFT_WR_DATA(0x3f); TFT_WR_DATA(0x00); TFT_WR_DATA(0x07); TFT_WR_DATA(0x03); TFT_WR_DATA(0x10); TFT_WR_REG(0x2a); TFT_WR_DATA(0x00); TFT_WR_DATA(0x00); TFT_WR_DATA(0x00); TFT_WR_DATA(0x7f); TFT_WR_REG(0x2b); TFT_WR_DATA(0x00); TFT_WR_DATA(0x00); TFT_WR_DATA(0x00); TFT_WR_DATA(0x9f); TFT_WR_REG(0xF0); //Enable test command TFT_WR_DATA(0x01); TFT_WR_REG(0xF6); //Disable ram power save mode TFT_WR_DATA(0x00); TFT_WR_REG(0x3A); //65k mode TFT_WR_DATA(0x05); TFT_WR_REG(0x29);//Display on TFT_SetParam();//设置LCD参数 LCD_LED_SET;//点亮背光 //LCD_Clear(WHITE); }
lcd,h
#ifndef __LCD_H #define __LCD_H #include "stm32f4xx.h" #include "MAIN.h" //支持横竖屏快速定义切换，支持8/16位模式切换 #define USE_HORIZONTAL 0 //定义是否使用横屏 0,不使用.1,使用. //LCD重要参数集 typedef struct { uint16_t width; //LCD 宽度 uint16_t height; //LCD 高度 uint16_t id; //LCD ID uint8_t dir; //横屏还是竖屏控制：0，竖屏；1，横屏。 uint16_t wramcmd; //开始写gram指令 uint16_t setxcmd; //设置x坐标指令 uint16_t setycmd; //设置y坐标指令 }_lcd_dev; #define LCD_CTRL GPIOB //定义TFT数据端口 #define LCD_LED GPIO_PIN_9 //1 #define LCD_RS GPIO_PIN_3 //4 #define LCD_CS GPIO_PIN_4 //8 #define LCD_SCL GPIO_PIN_7 //6 #define LCD_SDA GPIO_PIN_8 //5 #define LCD_RST GPIO_PIN_13 //3 #define LCD_SDA_SET ( SPI_SDA_GPIO_Port->BSRR = SPI_SDA_Pin); #define LCD_SDA_CLR ( SPI_SDA_GPIO_Port->BSRR = SPI_SDA_Pin<<16U); #define LCD_SCL_SET ( SPI_SCK_GPIO_Port->BSRR = SPI_SCK_Pin); #define LCD_SCL_CLR ( SPI_SCK_GPIO_Port->BSRR = SPI_SCK_Pin<<16U); #define LCD_CS_SET ( LCD_CS_GPIO_Port->BSRR = LCD_CS_Pin); #define LCD_CS_CLR ( LCD_CS_GPIO_Port->BSRR = LCD_CS_Pin<<16U); #define LCD_RS_SET ( LCD_RS_GPIO_Port->BSRR = LCD_RS_Pin); #define LCD_RS_CLR ( LCD_RS_GPIO_Port->BSRR = LCD_RS_Pin<<16U); #define LCD_RST_SET ( LCD_RSE_GPIO_Port->BSRR = LCD_RSE_Pin); #define LCD_RST_CLR ( LCD_RSE_GPIO_Port->BSRR = LCD_RSE_Pin<<16U); #define LCD_LED_SET ( LCD_LED_GPIO_Port->BSRR = LCD_LED_Pin); #define LCD_LED_CLR ( LCD_LED_GPIO_Port->BSRR = LCD_LED_Pin<<16U); /*********************************************************/ //LCD GPIO结构体 typedef struct LCD { //配置SPI引脚 GPIO_TypeDef * pLCD_RS_Port; //MOSI 主机发送到从机 uint16_t uLCD_RS_Pin; GPIO_TypeDef * pLCD_CS_Port; //MISO 从机发送到主机 uint16_t uLCD_CS_Pin; GPIO_TypeDef * pLCD_LED_Port; //MISO 从机发送到主机 uint16_t uLCD_LED_Pin; GPIO_TypeDef * pLCD_RSE_Port; //MISO 从机发送到主机 uint16_t uLCD_RSE_Pin; }LCD_HandleTypedef; #define LCD_RS_1(_HANDLE_) ( (_HANDLE_)->pLCD_RS_Port->BSRR = (_HANDLE_)->uLCD_RS_Pin) #define LCD_RS_0(_HANDLE_) ( (_HANDLE_)->pLCD_RS_Port->BSRR = (uint32_t)(_HANDLE_)->uLCD_RS_Pin<<16U) #define LCD_CS_1(_HANDLE_) ( (_HANDLE_)->pLCD_CS_Port->BSRR = (_HANDLE_)->uLCD_CS_Pin) #define LCD_CS_0(_HANDLE_) ( (_HANDLE_)->pLCD_CS_Port->BSRR = (uint32_t)(_HANDLE_)->uLCD_CS_Pin<<16U) #define LCD_LED_1(_HANDLE_) ( (_HANDLE_)->pLCD_LED_Port->BSRR = (_HANDLE_)->uLCD_LED_Pin) #define LCD_LED_0(_HANDLE_) ( (_HANDLE_)->pLCD_LED_Port->BSRR = (uint32_t)(_HANDLE_)->uLCD_LED_Pin<<16U) #define LCD_RSE_1(_HANDLE_) ( (_HANDLE_)->pLCD_RSE_Port->BSRR = (_HANDLE_)->uLCD_RSE_Pin) #define LCD_RSE_0(_HANDLE_) ( (_HANDLE_)->pLCD_RSE_Port->BSRR = (uint32_t)(_HANDLE_)->uLCD_RSE_Pin<<16U) /*********************************************************/ /*********************************************************/ typedef struct spi { //配置SPI引脚 GPIO_TypeDef * pCSN_Port; //CSN 片选信号 uint16_t uCSN_Pin; GPIO_TypeDef * pSCK_Port; //SCK 时序 uint16_t uSCK_Pin; GPIO_TypeDef * pMOSI_Port; //MOSI 主机发送到从机 uint16_t uMOSI_Pin; GPIO_TypeDef * pMISO_Port; //MISO 从机发送到主机 uint16_t uMISO_Pin; }SPI_HandleTypedef; //---------------------------------------------- // // define // //---------------------------------------------- //#define SPI_SCK_1(_HANDLE_) ( SPI_SCK_GPIO_Port->BSRR = SPI_SCK_Pin); //#define SPI_SCK_0(_HANDLE_) ( SPI_SCK_GPIO_Port->BSRR = SPI_SCK_Pin<<16U); //#define SPI_MOSI_1(_HANDLE_) ( SPI_SDA_GPIO_Port->BSRR = SPI_SDA_Pin); //#define SPI_MOSI_0(_HANDLE_) ( SPI_SDA_GPIO_Port->BSRR = SPI_SDA_Pin<<16U); #define SPI_SCK_1(_HANDLE_) ( (_HANDLE_)->pSCK_Port->BSRR = (_HANDLE_)->uSCK_Pin) #define SPI_SCK_0(_HANDLE_) ( (_HANDLE_)->pSCK_Port->BSRR = (uint32_t)(_HANDLE_)->uSCK_Pin<<16U) #define SPI_MOSI_1(_HANDLE_) ( (_HANDLE_)->pMOSI_Port->BSRR = (_HANDLE_)->uMOSI_Pin) #define SPI_MOSI_0(_HANDLE_) ( (_HANDLE_)->pMOSI_Port->BSRR = (uint32_t)(_HANDLE_)->uMOSI_Pin<<16U) void vSPI_LCD_Handle_Init(void); void SPIv_WriteData(uint8_t Data); void TFT_Init(void); void TFT_WR_DATA(uint8_t data); void TFT_Clear(uint16_t Color); void TFT_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2); void vSPI_LCD_Handle_Init(void); void showimage(const unsigned char *p); //画笔颜色 #define RED 0xf800 #define GREEN 0x07e0 #define BLUE 0x001f #define WHITE 0xffff #define BLACK 0x0000 #define YELLOW 0xFFE0 #define GRAY0 0xEF7D #define GRAY1 0x8410 #define GRAY2 0x4208 extern unsigned char gImage_qq[3200]; #endif
这只是我的初始化的函数，还有GUI的函数可以看网上的例程
