123 lines
3.7 KiB
C++
Executable file
123 lines
3.7 KiB
C++
Executable file
#include "Interrupt.h"
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#include <Arduino.h>
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#include <avr/power.h>
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#include <avr/sleep.h>
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#include <avr/wdt.h>
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void emptyFunc(){}
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InterruptFunction Interrupt::callback = emptyFunc;
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bool Interrupt::wakeUpNow = false;
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void __interruptHandler__() // the interrupt is handled here after wakeup
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{
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// execute code here after wake-up before returning to the loop() function
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// timers and code using timers (serial.print and more...) will not work here.
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noInterrupts(); // disable all interrupts
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(Interrupt::getCallback()) ();
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interrupts(); // enable all interrupts
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}
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ISR(Timer1_COMPA_vect) // timer compare interrupt service routine
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{
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__interruptHandler__();
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}
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ISR(WDT_vect) { }
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void Interrupt::wakeUp()
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{
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wakeUpNow = true;
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}
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void Interrupt::sleep()
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{
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/*
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* The 5 different modes are:
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* SLEEP_MODE_IDLE -the least power savings
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* SLEEP_MODE_ADC
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* SLEEP_MODE_PWR_SAVE
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* SLEEP_MODE_STANDBY
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* SLEEP_MODE_PWR_DOWN -the most power savings
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*
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* For now, we want as much power savings as possible, so we
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* choose the according
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* sleep mode: SLEEP_MODE_PWR_DOWN
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*/
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set_sleep_mode(SLEEP_MODE_PWR_DOWN); // sleep mode is set here
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wakeUpNow = false;
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sleep_enable(); // enables the sleep bit in the mcucr register
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// so sleep is possible. just a safety pin
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/*
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power_adc_disable();
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power_spi_disable();
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power_timer0_disable();
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power_timer1_disable();
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power_timer2_disable();
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power_twi_disable();
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*/
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while( ! Interrupt::wakeUpNow)
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{
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sleep_mode(); // here the device is actually put to sleep!!
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// THE PROGRAM CONTINUES FROM HERE AFTER WAKING UP
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}
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sleep_disable(); // first thing after waking from sleep:
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// disable sleep...
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power_all_enable(); // during normal running time.
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}
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void Interrupt::setupPinInterrupt(int pin)
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{
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noInterrupts(); // disable all interrupts
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/* Now it is time to enable an interrupt.
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* In the function call attachInterrupt(A, B, C)
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* A can be either 0 or 1 for interrupts on pin 2 or 3.
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* B Name of a function you want to execute at interrupt for A.
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* C Trigger mode of the interrupt pin. can be:
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* LOW a low level triggers
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* CHANGE a change in level triggers
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* RISING a rising edge of a level triggers
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* FALLING a falling edge of a level triggers
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*
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* In all but the IDLE sleep modes only LOW can be used.
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*/
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attachInterrupt(pin, __interruptHandler__, LOW);
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//detachInterrupt(0); // disables interrupt 0 on pin 2 so the
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// wakeUpNow code will not be executed
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interrupts(); // enable all interrupts
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}
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void Interrupt::setupTimerInterrupt(unsigned int milliseconds)
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{
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noInterrupts(); // disable all interrupts
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// initialize Timer1
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TCCR1A = 0;
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TCCR1B = 0;
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/* Clock Select Bit Description
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* CS12 CS11 CS10 Description
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* 0 0 0 No clock source (Stop timer)
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* 0 0 1 clk/1 (No prescaling)
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* 0 1 0 clk/8
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* 0 1 1 clk/64
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* 1 0 0 clk/256
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* 1 0 1 clk/1024
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* 1 1 0 External clock source on T1 pin. Clock on falling edge.
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* 1 1 1 External clock source on T1 pin. Clock on rising edge.
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*/
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TCCR1B |= (1 << CS12); // 256 prescaler
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TCNT1 = 34286; // preload timer 65536-16MHz/256/2Hz
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TIMSK1 |= (1 << TOIE1); // enable timer overflow interrupt
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interrupts(); // enable all interrupts
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}
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