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