实例
不多说了,直接贴代码,实现的功能为使用内部参考电压测VCC电压值。
- void main(void)
- {
- uint16_t BandGap_H, BandGap_L, AIN3_H, AIN3_L;
- uint16_t BandGap_v;
- uint32_t AIN3_v = 0;
- uint16_t voltage = 0;
-
- while(1)
- {
- Enable_ADC_BandGap;
- clr_ADCF;
- set_ADCS; // Each time ADC start trig signal
- while(ADCF == 0);
- clr_ADCF;
- set_ADCS; // Each time ADC start trig signal
- while(ADCF == 0);
- clr_ADCF;
- set_ADCS; // Each time ADC start trig signal
- while(ADCF == 0);
- BandGap_H = ADCRH;
- BandGap_L = ADCRL;
- BandGap_v = BandGap_H << 4 | BandGap_L;
- //printf ("\n Value = 0x%bx",ADCRH);
- //printf ("\n Value = 0x%bx",ADCRL);
-
- Enable_ADC_AIN3;
- clr_ADCF;
- set_ADCS; // Each time ADC start trig signal
- while(ADCF == 0);
- AIN3_H = ADCRH;
- AIN3_L = ADCRL;
- AIN3_v = AIN3_H << 4 | AIN3_L;
- //printf ("\n AIN3 Value = 0x%bx",ADCRH);
- //printf ("\n AIN3 Value = 0x%bx",ADCRL);
- voltage = (uint16_t)((uint32_t)AIN3_v * 1220 / BandGap_v );
-
- Timer0_Delay1ms(1000);
- }
- }
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