keil平台基于stm32的AD8232心电采集求心率程序
时间: 2023-06-19 12:04:54 浏览: 205
以下是基于Keil平台和STM32的AD8232心电采集程序,可以实现心率的计算:
```c
#include "stm32f10x.h"
#include "delay.h"
#include "lcd.h"
#include "ads1292.h"
void TIM3_Int_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
TIM_TimeBaseStructure.TIM_Period = arr;
TIM_TimeBaseStructure.TIM_Prescaler =psc;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_ClearFlag(TIM3, TIM_FLAG_Update);
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);
TIM_Cmd(TIM3, ENABLE);
}
u16 g_heart_rate = 0;
u16 g_heart_count = 0;
u16 g_heart_total = 0;
u16 g_heart_average = 0;
u16 g_heart_flag = 0;
void TIM3_IRQHandler(void)
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) {
TIM_ClearITPendingBit(TIM3, TIM_IT_Update);
g_heart_count++;
if (g_heart_count >= 75) {
g_heart_total = g_heart_flag;
g_heart_average = g_heart_total / 75;
g_heart_rate = (u16)(60 * g_heart_average / 1000);
g_heart_count = 0;
g_heart_total = 0;
g_heart_average = 0;
g_heart_flag = 0;
}
}
}
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
delay_init();
ADS1292_Init();
LCD_Init();
TIM3_Int_Init(999, 7199);
while(1)
{
u8 *data = ADS1292_Read_Data(); //读取心电数据
if (data != NULL) {
u16 tmp = (data[0] << 8) | data[1];
if (tmp > 32768) {
tmp = 65536 - tmp;
}
tmp = tmp * 1000 / 32768;
if (tmp > 1000) {
tmp = 1000;
}
if (tmp < 0) {
tmp = 0;
}
g_heart_flag += tmp;
LCD_Show_Num(0, 0, g_heart_rate, 2, 16); //在LCD上显示心率
delay_ms(10);
}
}
}
```
在这个程序中,我们首先通过ADS1292模块读取心电数据,然后计算出心率,并将其显示在LCD上。具体来说,我们使用一个定时器来定时计算心率,每秒钟计算一次。在定时器中断处理函数中,我们累加1秒钟内的心电数据,然后计算平均值,并将其转换为心率。在主循环中,我们不断读取心电数据,并在LCD上显示心率。
需要注意的是,这个程序还需要用到ADS1292模块的驱动程序,以及LCD的驱动程序。这里我们假设这些驱动程序已经存在,可以直接使用。如果你还没有这些驱动程序,需要自己编写。
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