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@ -46,7 +46,6 @@ int16_t analogRead(uint8_t pin) { |
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#endif |
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} |
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<<<<<<< HEAD |
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int16_t analogReadPin(pin_t pin) { return adc_read(pinToMux(pin)); } |
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uint8_t pinToMux(pin_t pin) { |
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@ -95,36 +94,13 @@ uint8_t pinToMux(pin_t pin) { |
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case C5: return _BV(MUX2) | _BV(MUX0); // ADC5
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// ADC7:6 not present in DIP package and not shared by GPIO pins
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default: return _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
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======= |
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// Mux input
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int16_t adc_read(uint8_t mux) |
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{ |
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#if defined(__AVR_AT90USB162__) |
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return 0; |
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#else |
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uint16_t res = 0; |
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ADCSRA = (1<<ADEN) | ADC_PRESCALER; // enable ADC
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#ifndef __AVR_ATmega32A__ |
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ADCSRB = (1<<ADHSM) | (mux & 0x20); // high speed mode
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#endif |
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ADMUX = aref | (mux & 0x1F); // configure mux input
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ADCSRA |= (1<<ADSC); // start the conversion
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while (ADCSRA & (1<<ADSC)) ; // wait for result
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res = ADCL; // must read LSB first
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res |= (ADCH << 8) | res; |
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ADCSRA &= ~(1<<ADEN);//turn off the ADC
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return res; |
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>>>>>>> 5939a4430... Add save and restore of each pin used in reading joystick (AVR). |
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#endif |
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// clang-format on
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} |
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} |
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int16_t adc_read(uint8_t mux) { |
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uint8_t low; |
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uint16_t low; |
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// Enable ADC and configure prescaler
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ADCSRA = _BV(ADEN) | ADC_PRESCALER; |
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@ -152,5 +128,10 @@ int16_t adc_read(uint8_t mux) { |
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// Must read LSB first
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low = ADCL; |
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// Must read MSB only once!
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return (ADCH << 8) | low; |
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low |= (ADCH << 8); |
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//turn off the ADC
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ADCSRA &= ~(1<<ADEN); |
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return low; |
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} |
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