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標題: stm32串口控制舵機發(fā)送數(shù)據(jù)已接收卻無法執(zhí)行問題在哪？附程序 [打印本頁]

作者: 18371269426 時間: 2019-10-27 21:36
標題: stm32串口控制舵機發(fā)送數(shù)據(jù)已接收卻無法執(zhí)行問題在哪？附程序
#include "led.h"
#include "delay.h"
#include "sys.h"
#include "pwm.h"
#include "usart.h"
#include "string.h"

char cmd[200];
int main(void)
{

   u8 t;
u8 len;
//u8 dir=1;
delay_init();
LED_Init();
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
   uart_init(115200);
while(1)
{
   TIM1_PWM_Init(199,7199);
if(USART_RX_STA&0x8000)
{
   len=USART_RX_STA&0x3FFF;
   for(t=0;t<len;t++)
   {
      cmd[t]=USART_RX_BUF[t];
      while((USART1->SR&0X40)==0);
   }
   printf("\r\n receive successful \r\n");
            USART_RX_STA=0;
   if(!(strcmp(cmd,"1")))
   {

   TIM_SetCompare1(TIM1,37);
         memset(cmd,0,strlen(cmd));
      }       //0度

      else if(!(strcmp(cmd,"2")))
   {

   TIM_SetCompare1(TIM1,60);
         memset(cmd,0,strlen(cmd));
      }          //45度
      else if(!(strcmp(cmd,"3")))
   {

   TIM_SetCompare1(TIM1,93);
         memset(cmd,0,strlen(cmd));
      }          //90度
      else if(!(strcmp(cmd,"4")))
   {

   TIM_SetCompare1(TIM1,125);
         memset(cmd,0,strlen(cmd));
      }          //135度
      else if(!(strcmp(cmd,"5")))
   {

   TIM_SetCompare1(TIM1,160);
         memset(cmd,0,strlen(cmd));
      }          //180度

      else
         printf("\r\n input error");
         memset(cmd,0,strlen(cmd));

}
}
}

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