STM32控制HMI串口屏发送指令字符串后，串口屏无响应温度没有改变

ID:824585 · 发表于 2020-10-11 16:45

#include "stm32f10x.h"
#include "usart.h"
#include "delay.h"
#include "mlx90614.h"
#include "sys.h"

extern uint8_t aRxBuffer[100];
extern uint8_t aRxCounter;
extern uint8_t aReceiveState;

void USART_HalfDuplexCmd(USART_TypeDef* USARTx, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_USART_ALL_PERIPH(USARTx));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
/* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
USARTx->CR3 |= CR3_HDSEL_Set;
  }
  else
  {
/* Disable the Half-Duplex mode by clearing the HDSEL bit in the CR3 register */
USARTx->CR3 &= CR3_HDSEL_Reset;
  }
}

volatile uint8_t aRxBuffer[100]={0x00};
volatile uint8_t aRxCounter=0;
volatile uint8_t aReceiveState=0;
int main(void)
{

  USART_Config();
//DEBUG_USARTx = USART1;
//       DEBUG_USARTx = USART2;
Temperature = SMBus_ReadTemp();
      delay_ms(500);
while(1)
      {

                                    Temperature = SMBus_ReadTemp();

// ′®¿ú1μÄêy¾Y


            if(aReceiveState==1)//èç1û½óêÕμ½1Ö¡êy¾Y

            {
                     aReceiveState=0;


                     if(aRxBuffer[0]=='a')
                     {

                        if(aRxBuffer[2]=='1')
                        { x=1;       }
                        else if(aRxBuffer[2]=='2')
                        { x=0;  }

               }
            }
                              if(x==1)
            {
                     DEBUG_USARTx = USART1;
                     printf("x0.val=%d",(int)(Temperature*10)); //x0.val=%d为向串口屏发送的指令
                     delay_ms(500);
                     usart_pm_end();
                     if(x==2)
            {
                     DEBUG_USARTx = USART1;
                     printf("x0.val=a10"); ////x0.val=%d为向串口屏发送的指令
            }
            }

ID:36656 · 发表于 2020-10-12 15:43

            if(x==1)
            {
                     DEBUG_USARTx = USART1;
                     printf("x0.val=%d",(int)(Temperature*10)); //x0.val=%d为向串口屏发送的指令
                     usart_pm_end();
                     delay_ms(500);
                     if(x==2)
            {
                     DEBUG_USARTx = USART1;
                     //printf("x0.val=a10"); ////x0.val=%d为向串口屏发送的指令
            }
            }

ID:36656 · 发表于 2020-10-12 15:45

用串口调试助手看下你单片机发送的数据是什么

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