采集不到数据

1万 · 2021-1-12 21:45

硬件转过来学习STM8L，自己写了个ADC采集程序，结果一直采集不到数据

2万 · 2021-1-12 21:50

楼主详细说说怎么回事啊，这么说太笼统了

2万 · 2021-1-12 21:52

楼主程序可以公开吗？贴程序看下吧，这么说看不出什么原因

1万 · 2021-1-12 21:56

#include "stm8l151g4.h"
#include "led_init.h"
#include "adc_init.h"
typedef unsigned short uint16_t;

main()
{
  uint16_t Value;//unsigned int Value;
  int i;
  adc_init();
  while (1)
   {
      Value = 0;
      ADC1_CR1 |=0x01;/*turn on ADC again*/
      i = 10;
      while(i--);
      while(!(0x01&ADC1_SR));// 是否转换完成
      ADC1_SR=0xFE;    // 转换完成，软件清零
      Value = (uint16_t)ADC1_DRH;//(unsigned int)ADC1_DRH;
      Value = Value<<8;
      Value =((uint16_t)Value|ADC1_DRL);


   }
}

#include "adc_init.h"

void adc_init(void)
{


      PD_DDR=0X00;       /* 0:Input mode */
      PD_CR1=0X00;       /* 0: Floating input */
      PD_CR2=0X00;       /* 0: External interrupt disabled */
      CLK_PCKENR2|=0x01;  /* open Peripheral ADC clk */


      ADC1_CR1 = 0x00; /* 0x00:turn off ADC ,12 bit resolution */
      ADC1_CR2 = 0x00;
      ADC1_SR|= 0x00;    /* Conversion not complete */


      ADC1_SQR1=0x80;    /* turn off DMA */
      ADC1_SQR2|=0x04;    /* select 19 channel */
      ADC1_TRIGR1|=0X10;  /* turn on  Internal reference voltage */
      ADC1_TRIGR2|=0X10;  /* schmitt trigger 19 disable */
      ADC1_CR1 |=0x01; /* turn on ADC */

}