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標(biāo)題: stm32按鍵捕獲通過控制pwm控制燈亮度 [打印本頁]

作者: 2596226218 時(shí)間: 2018-12-19 10:26
標(biāo)題: stm32按鍵捕獲通過控制pwm控制燈亮度
本帖最后由 2596226218 于 2018-12-19 10:28 編輯

#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "usart.h"
#include "timer.h"

/************************************************

************************************************/

extern u8  TIM5CH1_CAPTURE_STA;
extern u16       TIM5CH1_CAPTURE_VAL;

int main(void)
{
  u16 dat;
      u32 temp=0;
      delay_init();
      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
      uart_init(115200);
      LED_Init();

      TIM3_PWM_Init(899,0);
      TIM5_Cap_Init(0XFFFF,72-1);

         while(1)
      {

               if(TIM5CH1_CAPTURE_STA&0X80)
            {
                     if(temp<0xffffffff)
                     {
                     temp=TIM5CH1_CAPTURE_STA&0X3F;
                     temp*=65536;
                     temp+=TIM5CH1_CAPTURE_VAL;
                     printf("°′¼üê±3¤:%d us\r\n",temp);
                     TIM5CH1_CAPTURE_STA=0;
                        if(temp<10000000000.0)
                              {

                     dat=(temp/1000000000.0)*65535;
                        TIM_SetCompare2(TIM3,dat);
                              }
                        else TIM_SetCompare2(TIM3,65535);
                     }
                     else TIM_SetCompare2(TIM3,65535);


            }


      }
}

作者: admin 時(shí)間: 2018-12-19 16:05
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