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/*
* fsm-standby.c: standby mode functions for SpaghettiMonster.
*
* Copyright (C) 2017 Selene ToyKeeper
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef FSM_STANDBY_C
#define FSM_STANDBY_C
#include <avr/interrupt.h>
#include <avr/sleep.h>
#include "fsm-adc.h"
#include "fsm-wdt.h"
#include "fsm-pcint.h"
// low-power standby mode used while off but power still connected
#define standby_mode sleep_until_eswitch_pressed
void sleep_until_eswitch_pressed()
{
#ifdef USE_HALFSLEEP_MODE
//uint16_t sleep_counter = 0;
if (halfsleep_mode) {
// set WDT to slow mode
wdt_reset();
WDTCR |= (1<<WDCE) | (1<<WDE); // Start timed sequence
WDTCR = (1<<WDIE) | 5; // Enable interrupt every 0.5s
} else
#endif
WDT_off();
ADC_off();
// make sure switch isn't currently pressed
while (button_is_pressed()) {}
empty_event_sequence(); // cancel pending input on suspend
//PCINT_since_WDT = 0; // ensure PCINT won't ignore itself
PCINT_on(); // wake on e-switch event
#ifdef USE_HALFSLEEP_MODE
while (halfsleep_mode) {
f_wdt = 0; // detect if WDT was what caused a wake-up
#endif
// configure sleep mode
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_enable();
sleep_bod_disable();
sleep_cpu(); // wait here
// something happened; wake up
sleep_disable();
#ifdef USE_HALFSLEEP_MODE
// determine what woke us up... WDT or PCINT
if (! f_wdt) { // PCINT went off
halfsleep_mode = 0;
}
#endif
#ifdef USE_HALFSLEEP_MODE
}
#endif
#ifdef USE_THERMAL_REGULATION
// forget what the temperature was last time we were on
reset_thermal_history = 1;
#endif
// go back to normal running mode
//PCINT_on(); // should be on already
// FIXME? if button is down, make sure a button press event is added to the current sequence
ADC_on();
WDT_on();
}
#ifdef USE_IDLE_MODE
void idle_mode()
{
// configure sleep mode
set_sleep_mode(SLEEP_MODE_IDLE);
sleep_enable();
sleep_cpu(); // wait here
// something happened; wake up
sleep_disable();
}
#endif
#endif
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