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/*
* fsm-standby.h: 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_H
#define FSM_STANDBY_H
// deferred "off" so we won't suspend in a weird state
// (like... during the middle of a strobe pulse)
// set this to nonzero to enter standby mode next time the system is idle
volatile uint8_t go_to_standby = 0;
#ifdef TICK_DURING_STANDBY
#ifndef STANDBY_TICK_SPEED
#define STANDBY_TICK_SPEED 3 // every 0.128 s
/*
* From the Attiny85 manual:
* 0: 16 ms
* 1: 32 ms
* 2: 64 ms
* 3: 0.128 s
* 4: 0.256 s
* 5: 0.512 s
* 6: 1.0 s
* 7: 2.0 s
* 32: 4.0 s
* 33: 8.0 s
* (other values may have unexpected effects; not sure why the final bit is
* separated from the others, in the "32" position instead of "8", but that's
* how it is)
*/
#endif
#if (STANDBY_TICK_SPEED == 1)
#define SLEEP_TICKS_PER_SECOND 31
#define SLEEP_TICKS_PER_MINUTE 1800
#elif (STANDBY_TICK_SPEED == 2)
#define SLEEP_TICKS_PER_SECOND 16
#define SLEEP_TICKS_PER_MINUTE 900
#elif (STANDBY_TICK_SPEED == 3)
#define SLEEP_TICKS_PER_SECOND 8
#define SLEEP_TICKS_PER_MINUTE 450
#elif (STANDBY_TICK_SPEED == 4)
#define SLEEP_TICKS_PER_SECOND 4
#define SLEEP_TICKS_PER_MINUTE 225
#elif (STANDBY_TICK_SPEED == 5)
#define SLEEP_TICKS_PER_SECOND 2
#define SLEEP_TICKS_PER_MINUTE 113
#elif (STANDBY_TICK_SPEED == 6)
#define SLEEP_TICKS_PER_SECOND 1
#define SLEEP_TICKS_PER_MINUTE 57
#endif
#endif
#define standby_mode sleep_until_eswitch_pressed
void sleep_until_eswitch_pressed();
#ifdef USE_IDLE_MODE
// stops processing until next click or timer tick
// (I think)
void idle_mode();
#endif
#endif
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