51 lines
1.1 KiB
Arduino
51 lines
1.1 KiB
Arduino
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/*
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Rotary Encoder - Interrupt Example
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This is the same as "Interrupt.ino" but works
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the Pro Micro from Sparkfun which uses the
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Atmega32U4 microcontroller. This controller
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does not have the PCIE2 or PCMSK2 registers used in the
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Interrupt example. Instead these are moved
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to the PCIE0 and PCMSK0 registers instead.
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These registers support interrupts on Pro Micro
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pins 8, 9, 10 or 11. This example wires the encoder
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to pins 8 and 9.
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Note that the interrupt vector also changes to
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correspond to the PCIE0 interrupt.
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The circuit:
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* encoder pin A to Arduino pin 8
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* encoder pin B to Arduino pin 9
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* encoder ground pin to ground (GND)
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*/
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#include <Rotary.h>
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Rotary r = Rotary(8, 9);
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void setup() {
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Serial.begin(9600);
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r.begin();
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PCICR |= (1 << PCIE0);
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PCMSK0 |= (1 << PCINT4) | (1 << PCINT5);
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sei();
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}
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void loop() {
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}
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ISR(PCINT0_vect) {
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unsigned char result = r.process();
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if (result == DIR_NONE) {
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// do nothing
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}
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else if (result == DIR_CW) {
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Serial.println("ClockWise");
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}
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else if (result == DIR_CCW) {
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Serial.println("CounterClockWise");
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}
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}
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