stc12c5a60s2單片機(jī)的adc轉(zhuǎn)換,怎么樣才能取三次ad轉(zhuǎn)換呀

ID:1001384 · 發(fā)表于 2022-1-11 20:48

怎么樣才能取三次ad轉(zhuǎn)換呀，我這樣老是只能取到一個(gè)的轉(zhuǎn)換值，取不到另外一個(gè)。

uint       adc10_start(uchar channel)       //channel = 0~7
{
      uint       adc;
      uchar       i;

      ADC_RES = 0;
      ADC_RESL = 0;

      ADC_CONTR = (ADC_CONTR & 0xe 0) | ADC_START | channel;

      i = 250;
      do{
            if(ADC_CONTR & ADC_FLAG)
            {
                     ADC_CONTR &= ~ADC_FLAG;
                     adc = (uint)ADC_RES;
                     adc = (adc << 2) | (ADC_RESL & 3);
                     return       adc;
            }
      }while(--i);
      return       1024;
}

void main(void)
{

      LCDInit();
  Init_Ds18b20();
      DisplayString(0x0,0,"  Welcome...  ");
      DisplayString(0x0,1,"water quality");
      Delay1(500);
      WriteCmd(LCD_CLS);
      P1ASF = 0x07;
      ADC_CONTR = ADC_360T | ADC_ON;
      DisplayString(0x0,0,"PH:");
      DisplayString(0x0,1,"TU:");

      while(1)
      {


            TU = adc10_start(2);
            Delay1(1000);
            PH = adc10_start(3);

Delay1(1000);
            PH_Value_Conversion();
            TU_Value_Conversion();

ID:301191 · 發(fā)表于 2022-1-11 23:35

頂一下

ID:23606 · 發(fā)表于 2022-1-12 09:48

ADC_CONTR = 0;
ADC_CONTR = (ADC_CONTR & 0xe 0) | ADC_START | channel;

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