| 0,0 → 1,32 |
|---|
| #include "adc.h" |
| |
| #include <avr/io.h> |
| |
| void AD_Init_Interrupt() { |
| ADMUX = 0b01000000; // PORTC_0,Vref=V_ACC,capacitor on AVREF |
| |
| ADCSRA = (0b00000011); // 8 Prescaling |
| ADCSRA |= (1 << ADFR); // Set ADC to Free-Running Mode |
| ADCSRA |= (1 << ADIE); // enable interrupt |
| // sei(); |
| ADCSRA |= (1 << ADEN); // Enable ADC |
| ADCSRA |= (1 << ADSC); // Start A2D Conversions |
| } |
| |
| |
| void AD_Init() { |
| ADMUX = 0b01000000; // PORTC_0,Vref=Vacc with cap. on ref. |
| |
| ADCSRA |= (0b00000101); // 32 Prescaling |
| ADCSRA |= (1 << ADFR); // Set ADC to Free-Running Mode |
| ADCSRA |= (1 << ADEN); // Enable ADC |
| ADCSRA |= (1 << ADSC); // Start A2D Conversions |
| } |
| |
| |
| unsigned char AD_Read() { |
| char val; |
| val=(ADCL>>2); // low must be read first!! see datasheet... |
| val|=(ADCH<<6); |
| return val; |
| } |