114 lines
1.9 KiB
C
114 lines
1.9 KiB
C
#include "sys.h"
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#include "usart.h"
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#include "delay.h"
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#include "led.h"
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#include "key.h"
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#include "timer.h"
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/*****************************************************************************************************/
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//输入捕获实验
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//STM32H7工程模板-HAL库函数版本
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//DevEBox 大越创新
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//淘宝店铺：mcudev.taobao.com
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//淘宝店铺：shop389957290.taobao.com
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/*****************************************************************************************************/
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extern u8 TIM5CH1_CAPTURE_STA; //输入捕获状态
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extern u32 TIM5CH1_CAPTURE_VAL; //输入捕获值
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int main(void)
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{
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long long temp=0;
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Cache_Enable(); //打开L1-Cache
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HAL_Init(); //初始化HAL库
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Stm32_Clock_Init(160,5,2,4); //设置时钟,400Mhz
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delay_init(400); //延时初始化
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uart_init(115200); //串口初始化
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LED_Init(); //初始化LED时钟
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KEY_Init();
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TIM3_PWM_Init(500-1,200-1); //200M/200=1M的计数频率，自动重装载为500，那么PWM频率为1M/500=2kHZ
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TIM5_CH1_Cap_Init(0XFFFFFFFF,200-1); //以1MHZ的频率计数
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LED2(0); //点亮LED灯
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while(1)
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{
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delay_ms(10);
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TIM_SetTIM3Compare4(TIM_GetTIM3Capture4()+1);
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if(TIM_GetTIM3Capture4()==300)TIM_SetTIM3Compare4(0);
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if(TIM5CH1_CAPTURE_STA&0X80) //成功捕获到了一次高电平
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{
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temp=TIM5CH1_CAPTURE_STA&0X3F;
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temp*=0XFFFFFFFF; //溢出时间总和
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temp+=TIM5CH1_CAPTURE_VAL; //得到总的高电平时间
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printf("HIGH:%lld us\r\n",temp);//打印总的高点平时间
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TIM5CH1_CAPTURE_STA=0; //开启下一次捕获
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}
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}
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}
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/*****************************************************************************************************/
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//STM32H7工程模板-HAL库函数版本
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//DevEBox 大越创新
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//淘宝店铺：mcudev.taobao.com
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//淘宝店铺：shop389957290.taobao.com
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/*****************************************************************************************************/
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