智能门禁的计划
项目需求
- 矩阵键盘输入密码，正确开锁，错误提示，三次错误后蜂鸣器响三秒；
- 按下#号确认输入，按下*号修改密码；
- 密码保存在W25Q128里；
- OLED屏幕显示信息。
硬件清单
| 矩阵键盘 | OLED显示屏 | 继电器 | 蜂鸣器 | W25Q128存储器 |
| 开发板 | ST-Link | USB转TTL | 杜邦线 | ------ |
其中，OLED显示器利用的是I2C的通信协议，W25Q128用的是SPI的通信协议 ；
矩阵键盘这节课进行介绍。
硬件接线
简图：
模块：矩阵键盘（原理+驱动）
学了了独立按键之后，发现使用一个按键就要浪费一个IO口。那有没有一种节约GPIO的方法，比如要用16个按键，怎么样才能节省IO口？那我们就可以用矩阵键盘。16个按键，只需8个IO口。
矩阵键盘介绍
我们矩阵键盘的型号多种多样，有 1x4、3x3、3x4、4x4，甚至是 8x8 的；有薄膜的，有按键的。
矩阵键盘常见用途：
1. 电子密码锁
2. ATM 的键盘
3. POS机 的键盘
4. 家用电器的控制面板（微波炉、洗衣机等）
工作参数及引脚介绍
引脚介绍：
- 按键式的有的有引脚标识，R 是行，C 是列。有的没有引脚标识，可以找商家问下，或者自己看原理图。
- 薄膜式的都没有引脚标识。键盘正对自己，引脚是先行后列，从小到大。
矩阵键盘工作原理
这是矩阵键盘（4x4）内部电路示意图：
矩阵键盘识别常用——逐行逐列扫描法
- 使列线连接的I/O引脚输出低电平，四条行线所连接的I/O引脚输出高电平，当没有按键按下时，四条行线所连接的I/O引脚读取的将全部是高电平；当按键按下时，由于按键所在的行线与列线相通，行线将被下拉到低电阻。此时读取行线所连接的引脚，将不再是高电平。
- 逐列将列线依次置低电平，读取行线，如果某一条行线为低电平，则说明该行线与当前的行线为低电平的列线交叉点处的按键被按下，从判断按键按下。
中断来实现识别
- 把所有行引脚设成中断引脚，默认是上拉输入，下降沿触发，GPIO引脚输出高电平。
- 把所有列引脚连接的GPIO引脚设成输入，内部下拉。（GPIO引脚输入，默认是下拉）
- 当有中断触发的时候就可以知道哪一行有按键按下，再逐列看哪一列变成高电平，就是哪个按键被触发了。
小实验：串口输出矩阵键盘按下的按键
硬件清单：
STM32F103C8T6、矩阵键盘(3x4，薄膜)、USB转TTL、ST-Link
硬件接线：
文件代码：
- keyboard.c
#include "keyboard.h"#include "delay.h" uint8_t key_value; void keyboard_init(void){ //打开时钟 __HAL_RCC_GPIOB_CLK_ENABLE(); //调用GPIO的初始化函数 GPIO_InitTypeDef GPIO_Initstruct; GPIO_Initstruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_10; GPIO_Initstruct.Mode = GPIO_MODE_IT_FALLING; GPIO_Initstruct.Pull = GPIO_PULLUP; GPIO_Initstruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_Initstruct); GPIO_Initstruct.Pin = GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14; GPIO_Initstruct.Mode = GPIO_MODE_INPUT; GPIO_Initstruct.Pull = GPIO_PULLDOWN; //配置成下拉模式，当导通时，会变成高电平 GPIO_Initstruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_Initstruct); HAL_NVIC_SetPriority(EXTI0_IRQn,2,2); HAL_NVIC_EnableIRQ(EXTI0_IRQn); HAL_NVIC_SetPriority(EXTI1_IRQn,2,2); HAL_NVIC_EnableIRQ(EXTI1_IRQn); HAL_NVIC_SetPriority(EXTI2_IRQn,2,2); HAL_NVIC_EnableIRQ(EXTI2_IRQn); HAL_NVIC_SetPriority(EXTI15_10_IRQn,2,2); HAL_NVIC_EnableIRQ(EXTI15_10_IRQn); } void EXTI0_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0); } void EXTI1_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_1); }void EXTI2_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_2); }void EXTI15_10_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_10); } void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin){ uint8_t row = 0,column = 0; if(key_value != 0) return; //防止手速过快，只读取第一次按下时的按键值 //确定行 if(GPIO_Pin == GPIO_PIN_0) row = 0x10; else if(GPIO_Pin == GPIO_PIN_1) row = 0x20; else if(GPIO_Pin == GPIO_PIN_2) row = 0x30; else if(GPIO_Pin == GPIO_PIN_10) row = 0x40; //确定列 if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_11) == GPIO_PIN_SET){ delay_ms(10); while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_11) == GPIO_PIN_SET); column = 0x01; } else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_12) == GPIO_PIN_SET){ delay_ms(10); while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_12) == GPIO_PIN_SET); column = 0x02; } else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_13) == GPIO_PIN_SET){ delay_ms(10); while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_13) == GPIO_PIN_SET); column = 0x03; } else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_14) == GPIO_PIN_SET){ delay_ms(10); while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_14) == GPIO_PIN_SET); column = 0x04; } if(row != 0 && column != 0) key_value = row | column; //按位与进行拼接} uint8_t keyboard_get_value(void){ uint8_t ch = 0; if(key_value != 0) { if(key_value == 0x11) ch = '1'; else if(key_value == 0x12) ch = '2'; else if(key_value == 0x13) ch = '3'; else if(key_value == 0x14) ch = 'A'; else if(key_value == 0x21) ch = '4'; else if(key_value == 0x22) ch = '5'; else if(key_value == 0x23) ch = '6'; else if(key_value == 0x24) ch = 'B'; else if(key_value == 0x31) ch = '7'; else if(key_value == 0x32) ch = '8'; else if(key_value == 0x33) ch = '9'; else if(key_value == 0x34) ch = 'C'; else if(key_value == 0x41) ch = '*'; else if(key_value == 0x42) ch = '0'; else if(key_value == 0x43) ch = '#'; else if(key_value == 0x44) ch = 'D'; delay_ms(400); key_value = 0x00; } return ch;}- keyboard.h
#ifndef __KEYBOARD_H__#define __KEYBOARD_H__#include "stm32f1xx.h" void keyboard_init(void);uint8_t keyboard_get_value(void); #endif- main.c文件代码
#include "sys.h"#include "led.h"#include "delay.h"#include "uart1.h"#include "keyboard.h" int main(void){ HAL_Init(); /* 初始化HAL库 */ stm32_clock_init(RCC_PLL_MUL9); /* 设置时钟, 72Mhz */ led_init(); /* LED初始化 */ uart1_init(115200); printf("hello,world"); keyboard_init(); uint8_t key_value = 0; while(1) { key_value = keyboard_get_value(); if(key_value != 0){ printf("按下了：%c \r\n",key_value); key_value = 0; } }}注意：这个代码采用的是配置中断来实现，要回顾关于中断的配置流程。
项目框图
（要养成习惯，在做项目的时候一定要配置流程图）
项目代码
输出设备
oled.c文件代码：
#include "oled.h"#include "delay.h"#include "font.h" void oled_gpio_init(void){ GPIO_InitTypeDef gpio_initstruct; OLED_I2C_SCL_CLK(); OLED_I2C_SDA_CLK(); gpio_initstruct.Pin = OLED_I2C_SCL_PIN; gpio_initstruct.Mode = GPIO_MODE_OUTPUT_OD; gpio_initstruct.Pull = GPIO_PULLUP; gpio_initstruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(OLED_I2C_SCL_PORT,&gpio_initstruct); gpio_initstruct.Pin = OLED_I2C_SDA_PIN; HAL_GPIO_Init(OLED_I2C_SDA_PORT,&gpio_initstruct); } /*** @breif 配置I2C协议的时序图：开始，读写，应答，结束。* @note 在配置读写时序的时候，要注意。。。。。**/void oled_i2c_start(void){ OLED_SCL_SET(); OLED_SDA_SET(); OLED_SDA_RESET(); OLED_SCL_RESET();} void oled_i2c_stop(void){ OLED_SCL_RESET(); OLED_SDA_RESET(); OLED_SCL_SET(); OLED_SDA_SET();}void oled_i2c_ack(void){ OLED_SCL_SET(); OLED_SCL_RESET();} void oled_i2c_write_byte(uint8_t data){ uint8_t i,temp; temp = data; for(i = 0;i > 4) | 0x10); //取高位} /*** @breif 设置oled显示屏清屏函数* @note */void oled_fill(uint8_t data){ uint8_t i,j; for (i = 0;i < 8 ;i++){ oled_set_cursor(i,0); for(j = 0;j < 128;j++) oled_write_date(data); } } /*** @breif 封装oled显示屏显示字符、字符串、汉字、图像的函数* @note */ void oled_show_char(uint8_t x ,uint8_t y,uint8_t number ,uint8_t size){ //size代表的是高度 number = number - ' '; uint8_t i,j,page; //page:表示输入的字符总共需要的PAGE page = size / 8; if(size % 8 != 0) page ++; for (i = 0;i < page; i++) { oled_set_cursor(x+i,y); for (j = size / 2 * i;j < size / 2 * (i + 1); j++){ //size/2：高度的一半是宽度 if(size == 16) oled_write_date(ascii_8X16[number][j]); } }} //显示字符串void oled_show_string(uint8_t x,uint8_t y,char *p ,uint8_t size){ while(*p != '\0'){ oled_show_char(x,y,*p,size); //*p:取出数组中的首元素 y += size / 2; p++; //p++：代表的是数组指针递增，指向下一个元素地址。 }} //void oled_show_chinese(uint8_t x,uint8_t y, uint8_t N ,uint8_t size){ // uint8_t i,j;// for (i = 0 ; i < size / 8 ;i++){// oled_set_cursor(x+i,y);// for(j = size * i;j < size * (i + 1);j++){// if(size == 16)// oled_write_date(chinese_16X16[N][j]); if(size == 24) oled_write_date(chinese_24X24[N][j]);// }// }//} //显示汉字的函数void oled_show_chinese(uint8_t x,uint8_t y, uint8_t N ,uint8_t message_type){ uint8_t i,j; for (i = 0 ; i < 2 ;i++){ oled_set_cursor(x+i,y); for(j = 16 * i;j < 16 * (i + 1);j++){ switch (message_type){ case SHOW_INPUT_PWD: oled_write_date(chinese_enter_password[N][j]); break; case SHOW_PWD_RIGHT: oled_write_date(chinese_password_right[N][j]); break; case SHOW_PWD_ERROR: oled_write_date(chinese_password_error[N][j]); break; case SHOW_INPUT_OLD_PWD: oled_write_date(chinese_enter_oldPassword[N][j]); break; case SHOW_INPUT_NEW_PWD: oled_write_date(chinese_enter_newPassword[N][j]); break; case SHOW_PWD_CHANGE: oled_write_date(modify_passWord_complete[N][j]); break; case SHOW_SET_PWD: oled_write_date(set_passWord[N][j]); break; default: break; } } }} //请输入密码void oled_show_input(void){ oled_fill(0x00); oled_show_chinese(1,10,0,SHOW_INPUT_PWD); oled_show_chinese(1,30,1,SHOW_INPUT_PWD); oled_show_chinese(1,50,2,SHOW_INPUT_PWD); oled_show_chinese(1,70,3,SHOW_INPUT_PWD); oled_show_chinese(1,90,4,SHOW_INPUT_PWD); oled_show_char(1,110,':',16);}//密码正确void oled_pwd_right(void){ oled_fill(0x00); oled_show_chinese(1,10,0,SHOW_PWD_RIGHT); oled_show_chinese(1,30,1,SHOW_PWD_RIGHT); oled_show_chinese(1,50,2,SHOW_PWD_RIGHT); oled_show_chinese(1,70,3,SHOW_PWD_RIGHT); oled_show_char(1,90,':',16);}//密码错误void oled_pwd_error(void){ oled_fill(0x00); oled_show_chinese(1,10,0,SHOW_PWD_ERROR); oled_show_chinese(1,30,1,SHOW_PWD_ERROR); oled_show_chinese(1,50,2,SHOW_PWD_ERROR); oled_show_chinese(1,70,3,SHOW_PWD_ERROR); oled_show_char(1,110,':',16);}//请输入旧密码void oled_input_old_pwd(void){ oled_fill(0x00); oled_show_chinese(1,10,0,SHOW_INPUT_OLD_PWD); oled_show_chinese(1,26,1,SHOW_INPUT_OLD_PWD); oled_show_chinese(1,42,2,SHOW_INPUT_OLD_PWD); oled_show_chinese(1,58,3,SHOW_INPUT_OLD_PWD); oled_show_chinese(1,74,4,SHOW_INPUT_OLD_PWD); oled_show_chinese(1,90,5,SHOW_INPUT_OLD_PWD); oled_show_char(1,106,':',16);}//请输入新密码void oled_input_new_pwd(void){ oled_fill(0x00); oled_show_chinese(1,10,0,SHOW_INPUT_NEW_PWD); oled_show_chinese(1,26,1,SHOW_INPUT_NEW_PWD); oled_show_chinese(1,42,2,SHOW_INPUT_NEW_PWD); oled_show_chinese(1,58,3,SHOW_INPUT_NEW_PWD); oled_show_chinese(1,74,4,SHOW_INPUT_NEW_PWD); oled_show_chinese(1,90,4,SHOW_INPUT_NEW_PWD); oled_show_char(1,106,':',16);}//密码修改完成void oled_modif_pwd_complete(void){ oled_fill(0x00); oled_show_chinese(1,10,0,SHOW_PWD_CHANGE); oled_show_chinese(1,26,1,SHOW_PWD_CHANGE); oled_show_chinese(1,42,2,SHOW_PWD_CHANGE); oled_show_chinese(1,58,3,SHOW_PWD_CHANGE); oled_show_chinese(1,74,4,SHOW_PWD_CHANGE); oled_show_chinese(1,90,5,SHOW_PWD_CHANGE); oled_show_char(1,106,':',16);}//请设置密码void oled_set_pwd(void){ oled_fill(0x00); oled_show_chinese(1,10,0,SHOW_SET_PWD); oled_show_chinese(1,30,1,SHOW_SET_PWD); oled_show_chinese(1,50,2,SHOW_SET_PWD); oled_show_chinese(1,70,3,SHOW_SET_PWD); oled_show_chinese(1,90,4,SHOW_SET_PWD); oled_show_char(1,110,':',16);} //显示图像 void oled_show_image(uint8_t x,uint8_t y, uint8_t width ,uint8_t highth ,uint8_t * bpm){ uint8_t i,j; for(i = 0; i < highth ;i++) { oled_set_cursor(x+i,j); for(j = 0;j < width;j++) oled_write_date(bpm[ width * i + j ]); } }oled.h文件代码：
#ifndef __OLED_H__#define __OLED_H__#include "stm32f1xx.h" enum message{ SHOW_INPUT_PWD = 0, SHOW_PWD_RIGHT, SHOW_PWD_ERROR, SHOW_INPUT_OLD_PWD, SHOW_INPUT_NEW_PWD, SHOW_PWD_CHANGE, SHOW_SET_PWD }; #define OLED_I2C_SCL_CLK() __HAL_RCC_GPIOB_CLK_ENABLE()#define OLED_I2C_SCL_PORT GPIOB#define OLED_I2C_SCL_PIN GPIO_PIN_8 #define OLED_I2C_SDA_CLK() __HAL_RCC_GPIOB_CLK_ENABLE()#define OLED_I2C_SDA_PORT GPIOB#define OLED_I2C_SDA_PIN GPIO_PIN_9 #define OLED_SCL_RESET() HAL_GPIO_WritePin(OLED_I2C_SCL_PORT,OLED_I2C_SCL_PIN,GPIO_PIN_RESET)#define OLED_SCL_SET() HAL_GPIO_WritePin(OLED_I2C_SCL_PORT,OLED_I2C_SCL_PIN,GPIO_PIN_SET) #define OLED_SDA_RESET() HAL_GPIO_WritePin(OLED_I2C_SDA_PORT,OLED_I2C_SDA_PIN,GPIO_PIN_RESET)#define OLED_SDA_SET() HAL_GPIO_WritePin(OLED_I2C_SDA_PORT,OLED_I2C_SDA_PIN,GPIO_PIN_SET) void oled_init(void);void oled_set_cursor(uint8_t x,uint8_t y);void oled_fill(uint8_t data);void oled_write_date(uint8_t data);void oled_show_char(uint8_t x ,uint8_t y,uint8_t number ,uint8_t size);void oled_show_string(uint8_t x,uint8_t y,char *p ,uint8_t size);void oled_show_chinese(uint8_t x, uint8_t y, uint8_t N, uint8_t size);void oled_show_image(uint8_t x,uint8_t y, uint8_t width ,uint8_t highth,uint8_t * bpm); void oled_show_input(void);void oled_pwd_right(void);void oled_pwd_error(void);void oled_input_old_pwd(void);void oled_input_new_pwd(void);void oled_modif_pwd_complete(void);void oled_set_pwd(void); #endiffont.h文件代码
#ifndef __FONT_H__#define __FONT_H__ //请输入密码；const unsigned char chinese_enter_password[][32] = { 0x40,0x42,0xCC,0x00,0x00,0x44,0x54,0x54,0x54,0x7F,0x54,0x54,0x54,0x44,0x40,0x00, 0x00,0x00,0x7F,0x20,0x10,0x00,0xFF,0x15,0x15,0x15,0x55,0x95,0x7F,0x00,0x00,0x00,/*"请",0*/ 0x88,0x68,0x1F,0xC8,0x08,0x10,0xC8,0x54,0x52,0xD1,0x12,0x94,0x08,0xD0,0x10,0x00, 0x09,0x19,0x09,0xFF,0x05,0x00,0xFF,0x12,0x92,0xFF,0x00,0x5F,0x80,0x7F,0x00,0x00,/*"输",1*/ 0x00,0x00,0x00,0x00,0x00,0x01,0xE2,0x1C,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x80,0x40,0x20,0x10,0x0C,0x03,0x00,0x00,0x00,0x03,0x0C,0x30,0x40,0x80,0x80,0x00,/*"入",2*/ 0x10,0x8C,0x44,0x04,0xE4,0x04,0x95,0xA6,0x44,0x24,0x14,0x84,0x44,0x94,0x0C,0x00, 0x02,0x02,0x7A,0x41,0x41,0x43,0x42,0x7E,0x42,0x42,0x42,0x43,0xF8,0x00,0x00,0x00,/*"密",3*/ 0x04,0x84,0xE4,0x5C,0x44,0xC4,0x00,0x02,0xF2,0x82,0x82,0x82,0xFE,0x80,0x80,0x00, 0x02,0x01,0x7F,0x10,0x10,0x3F,0x00,0x08,0x08,0x08,0x08,0x48,0x88,0x40,0x3F,0x00,/*"码",4*/}; //密码正确；const unsigned char chinese_password_right[][32] = { 0x10,0x8C,0x44,0x04,0xE4,0x04,0x95,0xA6,0x44,0x24,0x14,0x84,0x44,0x94,0x0C,0x00, 0x02,0x02,0x7A,0x41,0x41,0x43,0x42,0x7E,0x42,0x42,0x42,0x43,0xF8,0x00,0x00,0x00,/*"密",0*/ 0x04,0x84,0xE4,0x5C,0x44,0xC4,0x00,0x02,0xF2,0x82,0x82,0x82,0xFE,0x80,0x80,0x00, 0x02,0x01,0x7F,0x10,0x10,0x3F,0x00,0x08,0x08,0x08,0x08,0x48,0x88,0x40,0x3F,0x00,/*"码",1*/ 0x00,0x02,0x02,0xC2,0x02,0x02,0x02,0xFE,0x82,0x82,0x82,0x82,0x82,0x02,0x00,0x00, 0x40,0x40,0x40,0x7F,0x40,0x40,0x40,0x7F,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,/*"正",2*/ 0x04,0x84,0xE4,0x5C,0x44,0xC4,0x20,0x10,0xE8,0x27,0x24,0xE4,0x34,0x2C,0xE0,0x00, 0x02,0x01,0x7F,0x10,0x10,0x3F,0x80,0x60,0x1F,0x09,0x09,0x3F,0x49,0x89,0x7F,0x00,/*"确",3*/};//密码错误；const unsigned char chinese_password_error[][32] = { 0x10,0x8C,0x44,0x04,0xE4,0x04,0x95,0xA6,0x44,0x24,0x14,0x84,0x44,0x94,0x0C,0x00, 0x02,0x02,0x7A,0x41,0x41,0x43,0x42,0x7E,0x42,0x42,0x42,0x43,0xF8,0x00,0x00,0x00,/*"密",0*/ 0x04,0x84,0xE4,0x5C,0x44,0xC4,0x00,0x02,0xF2,0x82,0x82,0x82,0xFE,0x80,0x80,0x00, 0x02,0x01,0x7F,0x10,0x10,0x3F,0x00,0x08,0x08,0x08,0x08,0x48,0x88,0x40,0x3F,0x00,/*"码",1*/ 0x40,0x30,0xEF,0x24,0x64,0x48,0x48,0x7F,0x48,0x48,0x48,0x7F,0x48,0x48,0x40,0x00, 0x01,0x01,0x7F,0x21,0x11,0x00,0xFF,0x49,0x49,0x49,0x49,0x49,0xFF,0x00,0x00,0x00,/*"错",2*/ 0x40,0x42,0xCC,0x00,0x00,0x80,0x9E,0x92,0x92,0x92,0x92,0x92,0x9E,0x80,0x00,0x00, 0x00,0x00,0x7F,0x20,0x94,0x84,0x44,0x24,0x14,0x0F,0x14,0x24,0x44,0x84,0x84,0x00,/*"误",3*/}; //请输入旧密码；const unsigned char chinese_enter_oldPassword[][32] = { 0x40,0x42,0xCC,0x00,0x00,0x44,0x54,0x54,0x54,0x7F,0x54,0x54,0x54,0x44,0x40,0x00, 0x00,0x00,0x7F,0x20,0x10,0x00,0xFF,0x15,0x15,0x15,0x55,0x95,0x7F,0x00,0x00,0x00,/*"请",0*/ 0x88,0x68,0x1F,0xC8,0x08,0x10,0xC8,0x54,0x52,0xD1,0x12,0x94,0x08,0xD0,0x10,0x00, 0x09,0x19,0x09,0xFF,0x05,0x00,0xFF,0x12,0x92,0xFF,0x00,0x5F,0x80,0x7F,0x00,0x00,/*"输",1*/ 0x00,0x00,0x00,0x00,0x00,0x01,0xE2,0x1C,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x80,0x40,0x20,0x10,0x0C,0x03,0x00,0x00,0x00,0x03,0x0C,0x30,0x40,0x80,0x80,0x00,/*"入",2*/ 0x00,0x00,0xFF,0x00,0x00,0x00,0xFE,0x82,0x82,0x82,0x82,0x82,0x82,0xFE,0x00,0x00, 0x00,0x00,0xFF,0x00,0x00,0x00,0x7F,0x20,0x20,0x20,0x20,0x20,0x20,0x7F,0x00,0x00,/*"旧",3*/ 0x10,0x8C,0x44,0x04,0xE4,0x04,0x95,0xA6,0x44,0x24,0x14,0x84,0x44,0x94,0x0C,0x00, 0x02,0x02,0x7A,0x41,0x41,0x43,0x42,0x7E,0x42,0x42,0x42,0x43,0xF8,0x00,0x00,0x00,/*"密",4*/ 0x04,0x84,0xE4,0x5C,0x44,0xC4,0x00,0x02,0xF2,0x82,0x82,0x82,0xFE,0x80,0x80,0x00, 0x02,0x01,0x7F,0x10,0x10,0x3F,0x00,0x08,0x08,0x08,0x08,0x48,0x88,0x40,0x3F,0x00,/*"码",5*/}; //请输入新密码const unsigned char chinese_enter_newPassword[][32] = { 0x40,0x42,0xCC,0x00,0x00,0x44,0x54,0x54,0x54,0x7F,0x54,0x54,0x54,0x44,0x40,0x00, 0x00,0x00,0x7F,0x20,0x10,0x00,0xFF,0x15,0x15,0x15,0x55,0x95,0x7F,0x00,0x00,0x00,/*"请",0*/ 0x88,0x68,0x1F,0xC8,0x08,0x10,0xC8,0x54,0x52,0xD1,0x12,0x94,0x08,0xD0,0x10,0x00, 0x09,0x19,0x09,0xFF,0x05,0x00,0xFF,0x12,0x92,0xFF,0x00,0x5F,0x80,0x7F,0x00,0x00,/*"输",1*/ 0x00,0x00,0x00,0x00,0x00,0x01,0xE2,0x1C,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x80,0x40,0x20,0x10,0x0C,0x03,0x00,0x00,0x00,0x03,0x0C,0x30,0x40,0x80,0x80,0x00,/*"入",2*/ 0x40,0x44,0x54,0x65,0xC6,0x64,0x54,0x44,0x00,0xFC,0x44,0x44,0xC4,0x42,0x40,0x00, 0x20,0x12,0x4A,0x82,0x7F,0x02,0x0A,0x92,0x60,0x1F,0x00,0x00,0xFF,0x00,0x00,0x00,/*"新",3*/ 0x10,0x8C,0x44,0x04,0xE4,0x04,0x95,0xA6,0x44,0x24,0x14,0x84,0x44,0x94,0x0C,0x00, 0x02,0x02,0x7A,0x41,0x41,0x43,0x42,0x7E,0x42,0x42,0x42,0x43,0xF8,0x00,0x00,0x00,/*"密",4*/ 0x04,0x84,0xE4,0x5C,0x44,0xC4,0x00,0x02,0xF2,0x82,0x82,0x82,0xFE,0x80,0x80,0x00, 0x02,0x01,0x7F,0x10,0x10,0x3F,0x00,0x08,0x08,0x08,0x08,0x48,0x88,0x40,0x3F,0x00,/*"码",5*/};//密码修改成功const unsigned char modify_passWord_complete[][32] = { 0x10,0x8C,0x44,0x04,0xE4,0x04,0x95,0xA6,0x44,0x24,0x14,0x84,0x44,0x94,0x0C,0x00, 0x02,0x02,0x7A,0x41,0x41,0x43,0x42,0x7E,0x42,0x42,0x42,0x43,0xF8,0x00,0x00,0x00,/*"密",0*/ 0x04,0x84,0xE4,0x5C,0x44,0xC4,0x00,0x02,0xF2,0x82,0x82,0x82,0xFE,0x80,0x80,0x00, 0x02,0x01,0x7F,0x10,0x10,0x3F,0x00,0x08,0x08,0x08,0x08,0x48,0x88,0x40,0x3F,0x00,/*"码",1*/ 0x40,0x20,0xF8,0x07,0xF0,0xA0,0x90,0x4C,0x57,0x24,0xA4,0x54,0x4C,0x80,0x80,0x00, 0x00,0x00,0xFF,0x00,0x1F,0x80,0x92,0x52,0x49,0x29,0x24,0x12,0x08,0x00,0x00,0x00,/*"修",2*/ 0x04,0x84,0x84,0x84,0x84,0xFC,0x40,0x30,0xCC,0x0B,0x08,0x08,0xF8,0x08,0x08,0x00, 0x00,0x7F,0x20,0x10,0x10,0x08,0x80,0x40,0x21,0x16,0x08,0x16,0x21,0x40,0x80,0x00,/*"改",3*/ 0x00,0x00,0xF8,0x88,0x88,0x88,0x88,0x08,0x08,0xFF,0x08,0x09,0x0A,0xC8,0x08,0x00, 0x80,0x60,0x1F,0x00,0x10,0x20,0x1F,0x80,0x40,0x21,0x16,0x18,0x26,0x41,0xF8,0x00,/*"成",4*/ 0x08,0x08,0x08,0xF8,0x08,0x08,0x08,0x10,0x10,0xFF,0x10,0x10,0x10,0xF0,0x00,0x00, 0x10,0x30,0x10,0x1F,0x08,0x88,0x48,0x30,0x0E,0x01,0x40,0x80,0x40,0x3F,0x00,0x00,/*"功",5*/ };//请设定密码const unsigned char set_passWord[][32] = { 0x40,0x42,0xCC,0x00,0x00,0x44,0x54,0x54,0x54,0x7F,0x54,0x54,0x54,0x44,0x40,0x00, 0x00,0x00,0x7F,0x20,0x10,0x00,0xFF,0x15,0x15,0x15,0x55,0x95,0x7F,0x00,0x00,0x00,/*"请",0*/ 0x40,0x40,0x42,0xCC,0x00,0x40,0xA0,0x9E,0x82,0x82,0x82,0x9E,0xA0,0x20,0x20,0x00, 0x00,0x00,0x00,0x3F,0x90,0x88,0x40,0x43,0x2C,0x10,0x28,0x46,0x41,0x80,0x80,0x00,/*"设",1*/ 0x10,0x0C,0x44,0x44,0x44,0x44,0x45,0xC6,0x44,0x44,0x44,0x44,0x44,0x14,0x0C,0x00, 0x80,0x40,0x20,0x1E,0x20,0x40,0x40,0x7F,0x44,0x44,0x44,0x44,0x44,0x40,0x40,0x00,/*"定",2*/ 0x10,0x8C,0x44,0x04,0xE4,0x04,0x95,0xA6,0x44,0x24,0x14,0x84,0x44,0x94,0x0C,0x00, 0x02,0x02,0x7A,0x41,0x41,0x43,0x42,0x7E,0x42,0x42,0x42,0x43,0xF8,0x00,0x00,0x00,/*"密",3*/ 0x04,0x84,0xE4,0x5C,0x44,0xC4,0x00,0x02,0xF2,0x82,0x82,0x82,0xFE,0x80,0x80,0x00, 0x02,0x01,0x7F,0x10,0x10,0x3F,0x00,0x08,0x08,0x08,0x08,0x48,0x88,0x40,0x3F,0x00,/*"码",4*/};beep.c文件代码
#include "stm32f1xx.h"#include "beep.h" //初始化GPIO口void beep_init(void){ //打开时钟 __HAL_RCC_GPIOC_CLK_ENABLE(); //打开GPIO口 GPIO_InitTypeDef GPIO_Initstruct; GPIO_Initstruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_Initstruct.Pin = GPIO_PIN_13; GPIO_Initstruct.Pull = GPIO_NOPULL; GPIO_Initstruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOC,&GPIO_Initstruct); //关闭蜂鸣器 beep_off();}//打开蜂鸣器函数void beep_on(void){ HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_RESET);}//关闭蜂鸣器void beep_off(void){ HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_SET);}//反转蜂鸣器void beep_toggle(void){ HAL_GPIO_TogglePin(GPIOC,GPIO_PIN_13); }switch.h文件代码
#include "alarm.h"#include "stm32f1xx.h" // 外设的驱动函数 //初始化GPIO口 void alarm_init(void){ //打开时钟 __HAL_RCC_GPIOB_CLK_ENABLE(); //调用GPIO的初始化函数 GPIO_InitTypeDef GPIO_Initstruct; GPIO_Initstruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_Initstruct.Pin = GPIO_PIN_7; GPIO_Initstruct.Pull = GPIO_PULLUP; GPIO_Initstruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_Initstruct); //关闭继电器 alarm_off();}//接通继电器的函数void alarm_on(void){ HAL_GPIO_WritePin(GPIOB,GPIO_PIN_7,GPIO_PIN_RESET); } //断开继电器的函数void alarm_off(void){ HAL_GPIO_WritePin(GPIOB,GPIO_PIN_7,GPIO_PIN_SET); } //获取继电器的状态uint8_t alarm_status_get(void){ return (uint8_t)HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_7);}w25q128.c文件代码
#include "w25q128.h" SPI_HandleTypeDef spi_handle = {0};void w25q128_spi_init(void){ spi_handle.Instance = SPI1; spi_handle.Init.Mode = SPI_MODE_MASTER; //配置成主模式还是从模式 spi_handle.Init.Direction = SPI_DIRECTION_2LINES; //配置全双工还是半双工 spi_handle.Init.DataSize = SPI_DATASIZE_8BIT; //数据的长度：8bit spi_handle.Init.CLKPolarity = SPI_POLARITY_LOW; //CPOL = 0 spi_handle.Init.CLKPhase = SPI_PHASE_1EDGE; //CPHA = 奇数边沿检测 spi_handle.Init.NSS = SPI_NSS_SOFT; //软件控制SS引脚配置 spi_handle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256; //波特率分频 ：256 spi_handle.Init.FirstBit = SPI_FIRSTBIT_MSB; //高位先行还是低位先行：高位先行 //下面这三个先不需要考虑 spi_handle.Init.TIMode = SPI_TIMODE_DISABLE; spi_handle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; spi_handle.Init.CRCPolynomial = 7; HAL_SPI_Init(&spi_handle);} void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi){ if(hspi->Instance == SPI1){ __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_SPI1_CLK_ENABLE(); GPIO_InitTypeDef gpio_initstruct; //NSS引脚 gpio_initstruct.Pin = GPIO_PIN_4; gpio_initstruct.Mode = GPIO_MODE_OUTPUT_PP; gpio_initstruct.Pull = GPIO_PULLUP; gpio_initstruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA,&gpio_initstruct); //SCL引脚和输出引脚 gpio_initstruct.Pin = GPIO_PIN_5 |GPIO_PIN_7; gpio_initstruct.Mode = GPIO_MODE_AF_PP; HAL_GPIO_Init(GPIOA,&gpio_initstruct); //输入引脚 gpio_initstruct.Pin = GPIO_PIN_6; gpio_initstruct.Mode = GPIO_MODE_INPUT; HAL_GPIO_Init(GPIOA,&gpio_initstruct); } } uint8_t w25q128_spi_swap_byte(uint8_t data){ uint8_t recv_data = 0; HAL_SPI_TransmitReceive(&spi_handle,&data, &recv_data,1,1000); ///size:尺寸代表是多少个字节 return recv_data;} //初始化w25q128模块void w25q128_init(void){ w25q128_spi_init();} //测试：读IDuint16_t w25q128_read_id(void){ uint16_t device_id = 0; W25Q128_CS(0); w25q128_spi_swap_byte(FLASH_ManufactDeviceID); w25q128_spi_swap_byte(0x00); w25q128_spi_swap_byte(0x00); w25q128_spi_swap_byte(0x00); device_id = w25q128_spi_swap_byte(FLASH_DummyBtye) > 16);//高位 w25q128_spi_swap_byte(address >> 8); //中位：由于函数是一个8位的，因此，移动后数据后，高位自动去掉。 w25q128_spi_swap_byte(address);} //忙等待的函数void w25q128_wait_busy(void){ while ((w25q128_read_sr1() & 0x01) == 0x01); //判断最后一位是不是1} //读数据void w25q128_read_data(uint32_t address,uint8_t *data,uint32_t size){ uint32_t i = 0; W25Q128_CS(0); w25q128_spi_swap_byte(FLASH_ReadDate); w25q128_send_address(address); for(i = 0;i< size; i++) data[i] = w25q128_spi_swap_byte(FLASH_DummyBtye); W25Q128_CS(1); }//页写:写的是256个字节，void w25q128_write_page(uint32_t address,uint8_t *data,uint16_t size){ //代表的是字节数量 uint16_t i = 0; w25q128_write_enable(); W25Q128_CS(0); w25q128_spi_swap_byte(FLASH_PageProgram); w25q128_send_address(address); for(i = 0;i < size; i++) w25q128_spi_swap_byte(data[i]); W25Q128_CS(1); //忙等待，写入数据是需要花费时间的；看状态寄存器的最后一位是0还是1 w25q128_wait_busy();}//扇区擦除void w25q128_erase_sector(uint32_t address){ w25q128_write_enable(); w25q128_wait_busy(); W25Q128_CS(0); w25q128_spi_swap_byte(FLASH_SectorErase); w25q128_send_address(address); W25Q128_CS(1); w25q128_wait_busy();}//如何指定变量的数据类型是多少w25q128.h文件代码
#ifndef __W25Q128_H__#define __W25Q128_H__#include "stm32f1xx.h" #define W25Q128_CS(x) do{x ? \ HAL_GPIO_WritePin(GPIOA,GPIO_PIN_4,GPIO_PIN_SET): \ HAL_GPIO_WritePin(GPIOA,GPIO_PIN_4,GPIO_PIN_RESET);\ }while(0) /* 指令表 */#define FLASH_ManufactDeviceID 0x90#define FLASH_WriteEable 0x06#define FLASH_ReadStatusReg1 0x05#define FLASH_ReadDate 0x03#define FLASH_PageProgram 0x02#define FLASH_SectorErase 0x20#define FLASH_DummyBtye 0xFF void w25q128_init(void);uint16_t w25q128_read_id(void);void w25q128_read_data(uint32_t address,uint8_t *data,uint32_t size);void w25q128_write_page(uint32_t address,uint8_t *data,uint16_t size);void w25q128_erase_sector(uint32_t address); #endif输入设备
keyboard.c文件代码：
#include "keyboard.h"#include "delay.h" static uint8_t key_value; void keyboard_init(void){ //打开时钟 __HAL_RCC_GPIOB_CLK_ENABLE(); //调用GPIO的初始化函数 GPIO_InitTypeDef GPIO_Initstruct; GPIO_Initstruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_10; GPIO_Initstruct.Mode = GPIO_MODE_IT_FALLING; GPIO_Initstruct.Pull = GPIO_PULLUP; GPIO_Initstruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_Initstruct); GPIO_Initstruct.Pin = GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14; GPIO_Initstruct.Mode = GPIO_MODE_INPUT; GPIO_Initstruct.Pull = GPIO_PULLDOWN; //配置成下拉模式，当导通时，会变成高电平 GPIO_Initstruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_Initstruct); HAL_NVIC_SetPriority(EXTI0_IRQn,2,2); HAL_NVIC_EnableIRQ(EXTI0_IRQn); HAL_NVIC_SetPriority(EXTI1_IRQn,2,2); HAL_NVIC_EnableIRQ(EXTI1_IRQn); HAL_NVIC_SetPriority(EXTI2_IRQn,2,2); HAL_NVIC_EnableIRQ(EXTI2_IRQn); HAL_NVIC_SetPriority(EXTI15_10_IRQn,2,2); HAL_NVIC_EnableIRQ(EXTI15_10_IRQn); } void EXTI0_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0); } void EXTI1_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_1); }void EXTI2_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_2); }void EXTI15_10_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_10); } void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin){ uint8_t row = 0,column = 0; if(key_value != 0) return; //防止手速过快，只读取第一次按下时的按键值 //确定行 if(GPIO_Pin == GPIO_PIN_0) row = 0x10; else if(GPIO_Pin == GPIO_PIN_1) row = 0x20; else if(GPIO_Pin == GPIO_PIN_2) row = 0x30; else if(GPIO_Pin == GPIO_PIN_10) row = 0x40; //确定列 if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_11) == GPIO_PIN_SET){ delay_ms(10); while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_11) == GPIO_PIN_SET); column = 0x01; } else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_12) == GPIO_PIN_SET){ delay_ms(10); while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_12) == GPIO_PIN_SET); column = 0x02; } else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_13) == GPIO_PIN_SET){ delay_ms(10); while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_13) == GPIO_PIN_SET); column = 0x03; } else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_14) == GPIO_PIN_SET){ delay_ms(10); while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_14) == GPIO_PIN_SET); column = 0x04; } if(row != 0 && column != 0) key_value = row | column; //按位与进行拼接} uint8_t keyboard_get_value(void){ uint8_t ch = 0; if(key_value != 0) { if(key_value == 0x11) ch = '1'; else if(key_value == 0x12) ch = '2'; else if(key_value == 0x13) ch = '3'; else if(key_value == 0x14) ch = 'A'; else if(key_value == 0x21) ch = '4'; else if(key_value == 0x22) ch = '5'; else if(key_value == 0x23) ch = '6'; else if(key_value == 0x24) ch = 'B'; else if(key_value == 0x31) ch = '7'; else if(key_value == 0x32) ch = '8'; else if(key_value == 0x33) ch = '9'; else if(key_value == 0x34) ch = 'C'; else if(key_value == 0x41) ch = '*'; else if(key_value == 0x42) ch = '0'; else if(key_value == 0x43) ch = '#'; else if(key_value == 0x44) ch = 'D'; delay_ms(400); key_value = 0x00; } return ch;}PASSWORD（配置密码）
password.c文件代码：
#include "password.h"#include "w25q128.h"#include "oled.h"#include "keyboard.h"#include "string.h"#include "stdio.h"#include "alarm.h"#include "beep.h"#include "delay.h" #define PASSWORD_SIZE 10 uint8_t pwd_input[PASSWORD_SIZE] = {0};uint8_t pwd_read[PASSWORD_SIZE] = {0};uint8_t i = 0,key_value = 0,try_times = 0; /********** 1 *********/ //初始化函数void password_init(void){ w25q128_init(); }//读取密码：读取的是w25Q128_read_data(); //保存密码void password_save(void){ w25q128_erase_sector(0x000000); w25q128_write_page(0x000000,pwd_input,PASSWORD_SIZE); oled_modif_pwd_complete();}//清空输入缓存void password_input_clear(void){ memset(pwd_input, 0 ,PASSWORD_SIZE); i = 0;} //获取键盘输入:将按键输入(数字、字母)存到一个字符串数组当中，而“#”，“*”则进行返回。uint8_t password_get_input(void){ password_input_clear(); /*清除 字符数组 中的值 */ while(1){ key_value = keyboard_get_value(); if(key_value == '#'){ printf("按下了 %c 键 \r\n", key_value); return POUND_KEY; } else if(key_value == '*'){ printf("按下了 %c 键 \r\n", key_value); return STAR_KEY; } else if(key_value != 0){ printf("按下了 %c 键 \r\n", key_value); oled_show_char(3,i * 10,key_value,16); //字符的尺寸。 pwd_input[i++] = key_value; } } } /********** 2 *********///密码比对:长度和元素。返回值：TURE和FLASEuint8_t password_compare(void){ uint8_t i = 0; w25q128_read_data(0x000000,pwd_read,PASSWORD_SIZE); //先检查两个字符串的长度 if(strlen((char *)pwd_input) != strlen((char *)pwd_read)) return FALSE; for (i = 0;i = 3){ beep_on(); delay_ms(1000); beep_off(); try_times = 0; } delay_s(1);} //旧密码输入正确的操作void password_old_right_action(void){ oled_input_new_pwd(); password_get_input(); password_save(); beep_on(); delay_ms(300); beep_off(); delay_ms(700);} //旧密码输入错误的操作void password_old_error_action(void){ oled_pwd_error(); delay_ms(1000);} //检查密码是否存在void password_check(void){ w25q128_read_data(0x000000,pwd_read,PASSWORD_SIZE); printf("读出密码：%s\r\n",pwd_read); if(pwd_read[0] == '\0' || pwd_read[0] == 0xFF){ oled_set_pwd(); password_get_input(); password_save(); }}password.h文件代码
#ifndef __PASSWORD_H__#define __PASSWPRD_H__#include "stm32f1xx.h" #define FALSE 0#define TRUE 1 #define POUND_KEY '#'#define STAR_KEY '*' void password_init(void); void password_check(void);void password_save(void);uint8_t password_get_input(void);uint8_t password_compare(void); void password_input_right_action(void);void password_input_error_action(void); void password_old_right_action(void);void password_old_error_action(void); #endif主函数
main.c文件代码：
#include "sys.h"#include "led.h"#include "delay.h"#include "uart1.h"#include "oled.h"#include "beep.h"#include "alarm.h"#include "w25q128.h"#include "keyboard.h"#include "password.h" int main(void){ HAL_Init(); /* 初始化HAL库 */ stm32_clock_init(RCC_PLL_MUL9); /* 设置时钟, 72Mhz */ uart1_init(115200); printf("hello,world!!!\r\n"); beep_init(); alarm_init(); oled_init(); keyboard_init(); password_init();// w25q128_init(); password_check(); uint8_t key_last = 0; while(1) { oled_show_input(); key_last = password_get_input(); if(key_last == POUND_KEY){ if(password_compare() == TRUE) password_input_right_action(); else password_input_error_action(); } else if(key_last == STAR_KEY){ oled_input_old_pwd(); password_get_input(); if(password_compare() == TRUE) password_old_right_action(); else password_old_error_action(); } }}
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