#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點prechin點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); //計數器開始計數
while(ECHO_IN == 1);
TIM_Cmd(TIM4,DISABLE); //計數器停止計數
Count(); //計算距離
}
}
void Count(void)
{
Time = TIM4->CNT; //讀計數器值
TIM4->CNT = 0; //清除計數器
if(Time>23530) //判斷是否在4M范圍，超出顯示ERRO
{
GUI_WriteCHAR(72,300,"erro",RED,BLACK);
}
else
{
Distance = (uint32_t)(Time*340/2/1000) ; //計算出來的是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); //顯示距離值
}
}
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