关于串口发送ADC数据求助

ljw285 · 发表于 2019-4-17 16:12:31

项目用到一个64路的压力传感器，打算用两个8路的模拟开关进行采集，使用一个ADC接口采集数据，自定义了帧头EEEE帧尾FFFF，一帧数据共68位。可是收到的一帧数据中却是重复两次的前32路数据检测，请问下问题出现在那里？谢谢！

#include "adc.h"
#include "delay.h"
#include "usart.h"
#include "LCD.h"
#include "high.h"

//u8 FSR_BUF[68];

void control()
{
  vcc_en=0;
gnd_en=0;
}

int channel[16][4]=
{
  {0,0,0,0},//channel 0
  {1,0,0,0},//channel 1
{0,1,0,0},//channel 2
{1,1,0,0},//channel 3
{0,0,1,0},//channel 4
{1,0,1,0},//channel 5
{0,1,1,0},//channel 6
{1,1,1,0},//channel 7
{0,0,0,1},//channel 8
{1,0,0,1},//channel 9
{0,1,0,1},//channel 10
{1,1,0,1},//channel 11
{0,0,1,1},//channel 12
{1,0,1,1},//channel 13
{0,1,1,1},//channel 14
{1,1,1,1} //channel 15
};

  void getadc()
{
int k=2;
   int i,j,a,p,m;
   float temp;
   u8 FSR_BUF[68];
FSR_BUF[0]=238;
FSR_BUF[1]=238;
FSR_BUF[66]=255;
   FSR_BUF[67]=255;

        //printf("\r\n");
   for(i=0;i<8;i++)
{
   vcc_s0=channel[0];
      vcc_s1=channel[1];
      vcc_s2=channel[2];
      vcc_s3=channel[3];
   delay_ms(10);
for(j=0;j<8;j++)
   {
   gnd_s0=channel[j][0];
      gnd_s1=channel[j][1];
   gnd_s2=channel[j][2];
   gnd_s3=channel[j][3];
delay_ms(10);
   a=Get_Adc(ADC_Channel_1);
   temp=(float)a*(3.3/4096);
   p=temp*10;
   if (p>200||p<=0)
   {
p=0;
}
   FSR_BUF[k]=p;
k++;
   }
   }
for(m=0;m<68;m++)
{
USART_SendData(USART1,FSR_BUF[m]);
while(RESET==USART_GetFlagStatus(USART1,USART_FLAG_TC));
}
}

int main(void)
{
   delay_init();
delay_ms(1); //延时函数初始化
   uart_init(9600);      //串口初始化为9600
   adc_init();       //ADC初始化
   HIGH_Init();
   control();

   while(1)
   {
   getadc();
delay_ms(5);
  }
}