STM32超声波测距程序与资料

ID:449934 · 发表于 2018-12-19 15:35

#include"stm32f10x.h"
#include"SysTick.h"
#include"TFT_Drive.h"
#include"GUI.h"
#include"Uitr.h"
#include"Time.h"

void Count(void);
void LED_GPIO_Config(void);

uint32_t Distance;
uint16_t Time;
uint8_t ShowData[5]={0,0,0,0,0};
int main(void)
{

      TFT_Init();
      Uitr_GPIO_Config();
      LED_GPIO_Config();
      GUI_ClearScreen(BLACK);
      GUI_WriteCHAR(60,55,"www点prechin点com",RED,BLACK);
      GUI_WriteCNChar(56,26,"普中科技",RED,BLACK);
      GUI_WriteCHAR(0,300,"Distance:",RED,BLACK);
      TIM4_Config();
      TIM3_Config();
      while(1)
      {
            while(ECHO_IN != 1);
            TIM_Cmd(TIM4,ENABLE);                                                 //计数器开始计数
            while(ECHO_IN == 1);
            TIM_Cmd(TIM4,DISABLE);                                                 //计数器停止计数
            Count();                                                                         //计算距离

      }
}

void Count(void)
{
      Time = TIM4->CNT;                                                                //读计数器值
      TIM4->CNT = 0;                                                                         //清除计数器
      if(Time>23530)                                                                         //判断是否在4M范围，超出显示ERRO
      {
            GUI_WriteCHAR(72,300,"erro",RED,BLACK);
      }
      else
      {
            Distance = (uint32_t)(Time*340/2/1000) ;       //计算出来的是MM
            ShowData[0]       = (Distance%10000/1000)+'0';
            ShowData[1]       = (Distance%1000/100)+'0';
            ShowData[2]       = (Distance%100/10)+'0';
            ShowData[3]       = (Distance%10/1)+'0';

            GUI_WriteCHAR(72,300,ShowData,RED,BLACK);       //显示距离值
      }

}

ID:1 · 发表于 2018-12-19 16:57

补全原理图或者详细说明一下电路连接即可获得100+黑币

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