STM32心率检测
设计介绍
这是一个简单的心率检测的设计，使用到的模块有STM32C8T6，一个LCD1602液晶显示，用来显示测得的心率值以及设置的阈值，阈值可以通过按键设置，当测得的心率值超过阈值时，蜂鸣器会报警，以及一个心率传感器。需要参考的朋友可以在文章底部点击下载源码和原理图。
main.c的代码如下：
#include "main.h"
#include "stm32f1xx_hal.h"
#include "rtc.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
/* USER CODE BEGIN Includes */
#include "LCD1602.h"
#include "MEMORY.h"
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
extern void RTC_CalendarShow(void);
void police_dispose(void);
void display(void);
void key_scan(void);
extern unsigned int xinlv;
void dis_play(void);
extern void Sensor(void);
char Read_ADC=0;
uint16_t ADC_Dat=0;
uint8_t key1_flag = 0,key2_flag = 0,key3_flag = 0;
uint8_t sec1=0,sec2=0,memory_flag=0;
static uint8_t state=0;
uint8_t s0,HH,LL;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void Error_Handler(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
#define key1 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0)
#define key2 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)
#define key3 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_10)
#define beep_write_0 HAL_GPIO_WritePin(GPIOB,GPIO_PIN_0,GPIO_PIN_RESET)
#define beep_write_1 HAL_GPIO_WritePin(GPIOB,GPIO_PIN_0,GPIO_PIN_SET)
#define led1_0 HAL_GPIO_WritePin(GPIOB,GPIO_PIN_11,GPIO_PIN_RESET)
#define led1_1 HAL_GPIO_WritePin(GPIOB,GPIO_PIN_11,GPIO_PIN_SET)
#define led2_0 HAL_GPIO_WritePin(GPIOB,GPIO_PIN_10,GPIO_PIN_RESET)
#define led2_1 HAL_GPIO_WritePin(GPIOB,GPIO_PIN_10,GPIO_PIN_SET)
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_RTC_Init();
MX_USART1_UART_Init();
MX_TIM3_Init();
MX_TIM2_Init();
/* USER CODE BEGIN 2 */
HAL_Delay(20);
LCD1602_cls();
HAL_TIM_Base_Start_IT(&htim3); //启动定时器
//HAL_TIM_Base_Start_IT(&htim2);
led2_0;
// Write_flsh_byte(0x08009000,153);
// Write_flsh_byte(0x0800A000,41);
// read_memory();//flash初始化
HH= readFlash(0x08009000);
LL= readFlash(0x0800A000);
printf("before %d%d",HH,LL);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
police_dispose();
display();
if(memory_flag)
{
memory_flag=0;
Write_flsh_byte(0x08009000,HH);
Write_flsh_byte(0x0800A000,LL);
}
/* USER CODE END 3 */
}
}
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInit;
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE
|RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC;
PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/**Enables the Clock Security System
*/
HAL_RCC_EnableCSS();
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* USER CODE BEGIN 4 */
void display(void)
{
RTC_CalendarShow();// 第一行显示
LCD1602_write(0,0xC0);//第一行显示
if(state==1&&s0)
{
LCD1602_writebyte((unsigned char *)"High:");
LCD1602_writebyte((unsigned char *)" ");
LCD1602_writebyte((unsigned char *)"Low:");
LCD1602_write(1,0x30+LL/100%10);
LCD1602_write(1,0x30+LL/10%10);
LCD1602_write(1,0x30+LL%10);
}
else if(state==2&&s0)
{
LCD1602_writebyte((unsigned char *)"High:");
LCD1602_write(1,0x30+HH/100%10);
LCD1602_write(1,0x30+HH/10%10);
LCD1602_write(1,0x30+HH%10);
LCD1602_writebyte((unsigned char *)" ");
LCD1602_writebyte((unsigned char *)"Low:");
LCD1602_writebyte((unsigned char *)" ");
}
else
{
LCD1602_writebyte((unsigned char *)"High:");
LCD1602_write(1,0x30+HH/100%10);
LCD1602_write(1,0x30+HH/10%10);
LCD1602_write(1,0x30+HH%10);
LCD1602_writebyte((unsigned char *)" ");
LCD1602_writebyte((unsigned char *)"Low:");
LCD1602_write(1,0x30+LL/100%10);
LCD1602_write(1,0x30+LL/10%10);
LCD1602_write(1,0x30+LL%10);
}
}
void police_dispose(void)
{
if(xinlv>HH||((xinlv需要源码和原理图的朋友可以点击下载链接
源代码