STM32单定时器的多通道捕获程序源码 -

#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "usart.h"
#include "timer.h"
extern u8 TIM5CH1_CAPTURE_STA; //输入捕获状态
extern u16 TIM5CH1_CAPTURE_VAL; //输入捕获值
extern u8 TIM5CH2_CAPTURE_STA; //输入捕获状态
extern u16 TIM5CH2_CAPTURE_VAL; //输入捕获值
extern u8 TIM5CH3_CAPTURE_STA; //输入捕获状态
extern u16 TIM5CH3_CAPTURE_VAL; //输入捕获值
extern u8 TIM5CH4_CAPTURE_STA; //输入捕获状态
extern u16 TIM5CH4_CAPTURE_VAL; //输入捕获值
int main(void)
{
delay_init(); //延时函数初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2:2位抢占优先级，2位响应优先级
uart_init(9600); //串口初始化为9600
LED_Init(); //LED端口初始化
//TIM3_PWM_Init(899,0); //不分频。PWM频率=72000/(899+1)=80Khz
TIM5_Cap_Init(0XFFFF,72-1); //以1Mhz的频率计数
while(1)
{
LED0=!LED0;
delay_ms(100);
//TIM_SetCompare2(TIM3,TIM_GetCapture2(TIM3)+1);
//if(TIM_GetCapture2(TIM3)==300)TIM_SetCompare2(TIM3,0);
if(TIM5CH1_CAPTURE_STA&0X80)//成功捕获到了一次上升沿 1
{
printf("0XFC,0X01,0XFD");//打印
TIM5CH1_CAPTURE_STA=0;//开启下一次捕获
}
if(TIM5CH2_CAPTURE_STA&0X80)//成功捕获到了一次上升沿 2
{
printf("0XFC,0X02,0XFE");//打印
TIM5CH2_CAPTURE_STA=0;//开启下一次捕获
}
if(TIM5CH3_CAPTURE_STA&0X80)//成功捕获到了一次上升沿 3
{
printf("0XFC,0X03,0XFF");//打印
TIM5CH3_CAPTURE_STA=0;//开启下一次捕获
}
if(TIM5CH4_CAPTURE_STA&0X80)//成功捕获到了一次上升沿 4
{
printf("0XFC,0X04,0X100");//打印
TIM5CH4_CAPTURE_STA=0;//开启下一次捕获
}
}
}

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