请教一下单片机代码读取P1.0 P1.1adc为啥读取不到数值

ID:611626 · 发表于 2025-7-26 12:41

#include <STC15F2K60S2.H>
void InitADC(void)
{
P1ASF = 0x03;
ADC_RES = 0;
ADC_CONTR = 0x80;
_nop_();          // 等待ADC稳定
_nop_();
_nop_();
_nop_();

}
unsigned int GetADCResult(unsigned char ch)
unsigned int result;
ADC_CONTR = (ADC_CONTR & 0xF8) | (ch & 0x07);
ADC_CONTR |= 0x08;
_nop_();
_nop_();
while (!(ADC_CONTR & 0x10));
ADC_CONTR &= ~0x10;
result = (ADC_RES << 2) | (ADC_RESL & 0x03);

return result;
}
void main(void)
{
unsigned int voltage = 0;  //
unsigned int current = 0;  //
while(1)
{
                     // 采集电压值(通道0:P1.0)
      voltage = GetADCResult(0);
      // 电压转换.最大数3000
   voltage = (voltage * 3000) / 1023; //3000

                     //voltage = 2999;
                     // 采集电流值(通道1:P1.1)
   current = GetADCResult(1);
current = (current * 1000) / 1023;
}

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