stc12c5a单片机串口通信问题

ID:505833 · 发表于 2020-5-26 09:03

该项目是基于stc12c5a 与tfmini通信以及bh1750通信。是在tfmini例程上改写，写得我有点懵了。之前好像还可以用串口2接受到tfmini传来的数据。现在不行了，不知道怎么回事，求助大佬们，拜托！若需要完整程序测试也可以私我，感谢！！

#include <stdio.h>
#include "stc12c5a60s2.h"       //the file come from stc-sip V6.86
#include <BH1750.c>
#define FOSC 11059200L       //System frequency
unsigned char Sensor_Data[5]={0x00,0x00,0x00,0x00,0x00};


typedef struct {
      int distance;
      int strength;
      char receiveComplete;
}TFmini;

TFmini tfmini = {0, 0, 0};

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

to get the light value from bh1750.c
*******************************************************************************/
void conversion(uint temp_data)  //  êy?Y×a??3? ??￡?ê?￡?°ù￡??§￡?íò
{
Sensor_Data[0]=temp_data/10000+0x30 ;
temp_data=temp_data%10000; //è?óà????
      Sensor_Data[1]=temp_data/1000+0x30 ;
temp_data=temp_data%1000; //è?óà????
Sensor_Data[2]=temp_data/100+0x30 ;
temp_data=temp_data%100;    //è?óà????
Sensor_Data[3]=temp_data/10+0x30 ;
temp_data=temp_data%10;    //è?óà????
Sensor_Data[4]=temp_data+0x30;
}

/******************************************************************************
TFmini 9 bytes output:
[0x59, 0x59, distanceL, distanceH, strengthL, strengthH, Mode, 0x00, checksum]
*****************************************************************************/
void getTFminiData(TFmini *tfmini) {
      static unsigned char i = 0 ;
      unsigned char j = 0;
      unsigned int b=0;
      unsigned int checksum = 0;
      static unsigned char rx[9];

      if(S2CON & 0x01) {       //uart2 receive interrupt flag
            S2CON &= ~(0x01);       //clear uart2 receive interrupt flag
            rx[ i] = S2BUF;       //uart2 buf
            if(rx[0] != 0x59) {
                     i = 0;
            } else if(i == 1 && rx[1] != 0x59) {
                     i = 0;
            } else if(i == 8) {
                     tfmini->receiveComplete = 1;
                     //printf("\r\n");
                     for(j = 0; j < 8; j++) {
                              checksum += rx[j];
                     }
                     if(rx[8] == (checksum % 256)) {
                              tfmini->distance = rx[2] + rx[3] * 256;
                              tfmini->strength = rx[4] + rx[5] * 256;
                              tfmini->receiveComplete = 1;
                     }
                     i = 0;
            } else {
                     i++;
            }
      }
}

/******************************************************************************
Timer2 as baudtare generator.
When FOSC = 11059200L, baudrate <= 345600(11059200/32)
*****************************************************************************/
void Uart_Init(unsigned long baudrate1, unsigned long baudrate2) {

      //Uart1 Init. Uart1 can select Timer1 or BRT as baudrate generator
      SCON = 0x50;          //8-bit variable UART
      //AUXR |= 0x01;                      //selectBRT as baudrate generator
      AUXR |= 0x40;                      //Set Timer1 1T Mode
      TMOD |= 0x20;                //Set Timer1 as 8-bit auto reload mode
      TH1 = TL1 = -(FOSC/32/baudrate1); //Set auto-reload vaule
      TR1 = 1;             //Timer1 start run
      //ES = 1;

      //Uart2 Init. Uart2 can only select BRT as baudrate generator
      //AUXR &=0XF7;
      S2CON = 0x50;          //8-bit variable UART
      BRT = -(FOSC/32/baudrate2);  //Set auto-reload vaule of baudrate generator
      AUXR |= 0x14;          //Baudrate generator work in 1T mode
      IE2 = 0x01;          //Enable UART2 interrupt

      EA = 1;

      SBUF = '\n';       //It's needed to give SBUF a random character if printf is used.
}
/*------------------------------------------------
               usart1·￠?íò???×??ú
------------------------------------------------*/
void SendByte(unsigned char dat)
{
SBUF = dat;
while(!TI);
   TI = 0;
}
/*------------------------------------------------
                  ·￠?íò???×?·?′?
------------------------------------------------*/
void SendStr(unsigned char *s)
{
while(*s!='\0')// \0 ±íê?×?·?′??áê?±ê??￡?          //í¨1y?ì2aê?·?×?·?′????2
  {
  if(*s=='*')
  SendByte(0x22);
  else
  SendByte(*s);
  s++;
  }

}

void main() {
  unsigned int b;
      Uart_Init(9600, 115200);

      Init_BH1750();//initialize the bh1750

      printf("Hello, TFmini!\r\n");

      b=getlx();//set b the result of bh1750
      conversion(b);//get the light value store in Sensor_data

      while(1) {
  if(tfmini.receiveComplete == 1) {
  tfmini.receiveComplete = 0;
  printf("(%d, %d)\r\n", tfmini.distance, tfmini.strength);
  SendStr(Sensor_Data);
  }
      }
      }

/*void Uart() interrupt 4 using 1 {

}*/

void Uart2() interrupt 8 using 1 {
      getTFminiData(&tfmini);

}

帐号		自动登录	找回密码
密码			立即注册


80 黑币	回复本帖可获得 20 黑币奖励! 每人限 3 次(中奖概率 80%)