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56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
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/*
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Copyright (C) 2011 James Coliz, Jr. <maniacbug@ymail.com>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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version 2 as published by the Free Software Foundation.
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*/
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/**
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* @file sleep.cpp
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*
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* Sleep helpers, definitions
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*/
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#include "RF24Network_config.h"
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#include <avr/sleep.h>
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#include "sleep.h"
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sleep_c Sleep;
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/******************************************************************/
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void sleep_c::begin(wdt_prescalar_e prescalar_in,short cycles)
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{
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sleep_cycles_remaining = cycles;
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sleep_cycles_per_transmission = cycles;
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uint8_t prescalar = min(9,(uint8_t)prescalar_in);
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uint8_t wdtcsr = prescalar & 7;
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if ( prescalar & 8 )
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wdtcsr |= _BV(WDP3);
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MCUSR &= ~_BV(WDRF);
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WDTCSR = _BV(WDCE) | _BV(WDE);
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WDTCSR = _BV(WDCE) | wdtcsr | _BV(WDIE);
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}
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/******************************************************************/
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void sleep_c::go(void)
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{
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while( sleep_cycles_remaining-- )
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{
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set_sleep_mode(SLEEP_MODE_PWR_DOWN);
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sleep_mode();
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}
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sleep_cycles_remaining = sleep_cycles_per_transmission;
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}
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ISR(WDT_vect) {
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}
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// vim:ai:cin:sts=2 sw=2 ft=cpp
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