forked from IanF/OneWireArduinoSlaveATTINY85
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59 lines
1.1 KiB
59 lines
1.1 KiB
#include "Arduino.h" |
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#include "LowLevel.h" |
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#include "SerialChannel.h" |
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#define LEDPin 13 |
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#define OWPin 2 |
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#define InterruptNumber 0 // Must correspond to the OWPin to correctly detect state changes. On Arduino Uno, interrupt 0 is for digital pin 2 |
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#define ResetMinDuration 360 |
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#define ResetMaxDuration 900 |
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SerialChannel debug("debug"); |
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Pin owPin(OWPin); |
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Pin ledPin(LEDPin); |
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unsigned long resetStart = (unsigned long)-1; |
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void setup() |
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{ |
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ledPin.outputMode(); |
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owPin.inputMode(); |
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ledPin.writeLow(); |
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attachInterrupt(InterruptNumber,onewireInterrupt,CHANGE); |
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Serial.begin(400000); |
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} |
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void loop() |
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{ |
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cli();//disable interrupts |
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sei();//enable interrupts |
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} |
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void onewireInterrupt(void) |
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{ |
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bool state = owPin.read(); |
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unsigned long now = micros(); |
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//ledPin.write(state); |
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if (!state) |
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resetStart = now; |
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if (state) |
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{ |
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unsigned long resetDuration = now - resetStart; |
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if (resetStart != (unsigned long)-1 && resetDuration >= ResetMinDuration && resetDuration <= ResetMaxDuration) |
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{ |
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debug.write("reset"); |
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ledPin.writeHigh(); |
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} |
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resetStart = (unsigned long)-1; |
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} |
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}
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