99 lines
2.1 KiB
C++
99 lines
2.1 KiB
C++
#include <RCSwitch.h>
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#include <avr/sleep.h>
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#include <avr/power.h>
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#include <avr/wdt.h>
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// Utility macros
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#define adc_disable() (ADCSRA &= ~_BV(ADEN)) // disable ADC (before power-off)
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#define adc_enable() (ADCSRA |= _BV(ADEN)) // re-enable ADC
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#define enable_pin_interrupts() (GIMSK |= _BV(PCIE)) // Enable Pin Change Interrupts
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// Pins
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#define SWITCH 0
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#define SENDER 2
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#define CONTROLLER 4
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RCSwitch mySwitch = RCSwitch();
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char* CIRCUIT_OPEN = "00000000000000000000000001000011";
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char* CIRCUIT_CLOSED = "00000000000000000000000001100011";
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int counter = 0;
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void setup() {
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pinMode(SWITCH, INPUT_PULLUP);
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pinMode(CONTROLLER, OUTPUT);
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digitalWrite(CONTROLLER, HIGH);
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mySwitch.enableTransmit(SENDER);
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mySwitch.setProtocol(2);
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sendWindowState();
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set_sleep_mode(SLEEP_MODE_PWR_DOWN);
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enable_pin_interrupts();
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enableWdt();
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}
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void loop() {
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sleep();
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}
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bool readState() {
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digitalWrite(CONTROLLER, LOW);
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bool state = digitalRead(SWITCH);
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digitalWrite(CONTROLLER, HIGH);
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return state;
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}
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void sendWindowState() {
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if (readState()) {
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mySwitch.send(CIRCUIT_OPEN);
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} else {
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mySwitch.send(CIRCUIT_CLOSED);
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}
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}
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void sleep() {
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PCMSK |= _BV(PCINT0); // Use PB0 as interrupt pin
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adc_disable();
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sleep_enable(); // Sets the Sleep Enable bit in the MCUCR Register (SE BIT)
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sei(); // Enable interrupts
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sleep_cpu(); // sleep
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cli(); // Disable interrupts
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PCMSK &= ~_BV(PCINT0); // Turn off PB0 as interrupt pin
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sleep_disable(); // Clear SE bit
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adc_enable();
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sei(); // Enable interrupts
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}
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ISR(PCINT0_vect) {
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sendWindowState();
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delay(5000);
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sendWindowState();
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}
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ISR(WDT_vect) {
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counter++;
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if (counter % 220 == 0) {
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counter = 0;
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sendWindowState();
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delay(10000);
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sendWindowState();
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}
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}
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//enable the wdt for 8sec interrupt
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void enableWdt()
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{
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MCUSR = 0x00;
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WDTCR |= _BV(WDCE) | _BV(WDE);
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WDTCR = _BV(WDIE) | _BV(WDP3) | _BV(WDP0); //8192ms
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}
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