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- /*
- DigitalReadSerial
- Reads a digital input on pin 2, prints the result to the serial monitor
-
- This example code is in the public domain.
- */
-
-
- int ADC_VAL0 = A0;
-
- // the setup routine runs once when you press reset:
- void setup() {
- // initialize serial communication at 9600 bits per second:
- Serial.begin(9600);
- // make the ADC_VAL0's pin an input:
- //pinMode(ADC_VAL0, INPUT);
-
- analogReference(INTERNAL);
- //to find where arduino does this, grep -r analogReference in Arduino install folder
- //cryptic shit though
- //so instead, just fprint the register before and after the change. much more intuitive.
-
- //do it manually...
-
-
-
- //this doesn't work
- //ADMUX = (0 << REFS1) | (0 << REFS0) ;
-
- //this doesn't work
- //ADMUX = _BV(REFS1) | _BV(REFS0) | _BV(MUX0);
-
- //this doesn't work
- //ADMUX = ADMUX | 0b11001110;
-
- //this doesn't work
- //ADMUX = (1 << REFS1) | (1 << REFS0) ;
-
- //this also doesn't work
- //ADMUX |= (1 << REFS0);
- //ADMUX |= (1 << REFS1);
-
- //search engines have been fucked over with endless forum debates, hopeless. a blog post guide would suffice.
-
- //even this doesn't work. why... it should work. must be wiring code breaking things. give up for now.
- //ADMUX = ADMUX | 0b11000000;
-
-
-
-
-
-
- }
-
- // the loop routine runs over and over again forever:
- void loop() {
- // read the input pin:
- int ADCVAL0_State = analogRead(ADC_VAL0);
- // print out the state of the button:
- Serial.println(ADCVAL0_State);
- delay(10000); // delay in between reads for stability
-
-
- //Trying to debug why I cant change a bit in a register. fucking wiring. fuck search engines.
- //int dog = ADMUX;
- //Serial.println(ADMUX,BIN);
- }
-
-
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