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// fsm-main.c: main() function for SpaghettiMonster.
// Copyright (C) 2017-2023 Selene ToyKeeper
// SPDX-License-Identifier: GPL-3.0-or-later
#pragma once
#include "fsm/main.h"
#if PWM_CHANNELS == 4
#ifdef AVRXMEGA3 // ATTINY816, 817, etc
#error 4-channel PWM not currently set up for the AVR 1-Series
#endif
// 4th PWM channel requires manually turning the pin on/off via interrupt :(
ISR(TIMER1_OVF_vect) {
//bitClear(PORTB, 3);
PORTB &= 0b11110111;
//PORTB |= 0b00001000;
}
ISR(TIMER1_COMPA_vect) {
//if (!bitRead(TIFR,TOV1)) bitSet(PORTB, 3);
if (! (TIFR & (1<<TOV1))) PORTB |= 0b00001000;
//if (! (TIFR & (1<<TOV1))) PORTB &= 0b11110111;
}
#endif
//#ifdef USE_REBOOT
static inline void prevent_reboot_loop() {
// prevent WDT from rebooting MCU again
#ifdef AVRXMEGA3 // ATTINY816, 817, etc
RSTCTRL.RSTFR &= ~(RSTCTRL_WDRF_bm); // reset status flag
#else
MCUSR &= ~(1<<WDRF); // reset status flag
#endif
wdt_disable();
}
//#endif
int main() {
// Don't allow interrupts while booting
cli();
//#ifdef USE_REBOOT
// prevents cycling after a crash,
// whether intentional (like factory reset) or not (bugs)
prevent_reboot_loop();
//#endif
hwdef_setup();
#if 0
#ifdef HALFSPEED
// run at half speed
// FIXME: not portable (also not needed)
CLKPR = 1<<CLKPCE;
CLKPR = 1;
#endif
#endif
#ifdef USE_DEBUG_BLINK
//debug_blink(1);
#endif
// all booted -- turn interrupts back on
PCINT_on();
WDT_on();
ADC_on();
sei();
// in case any spurious button presses were detected at boot
#ifdef USE_DELAY_MS
delay_ms(1);
#else
delay_4ms(1);
#endif
// fallback for handling a few things
#ifndef DONT_USE_DEFAULT_STATE
push_state(default_state, 0);
nice_delay_interrupt = 0;
#endif
// call recipe's setup
setup();
// main loop
while (1) {
// if event queue not empty, empty it
process_emissions();
// if loop() tried to change state, process that now
StatePtr df = deferred_state;
if (df) {
set_state(df, deferred_state_arg);
deferred_state = NULL;
//deferred_state_arg = 0; // unnecessary
}
// enter standby mode if requested
// (works better if deferred like this)
if (go_to_standby) {
#ifdef USE_RAMPING
set_level(0);
#else
#if PWM_CHANNELS >= 1
PWM1_LVL = 0;
#endif
#if PWM_CHANNELS >= 2
PWM2_LVL = 0;
#endif
#if PWM_CHANNELS >= 3
PWM3_LVL = 0;
#endif
#if PWM_CHANNELS >= 4
PWM4_LVL = 255; // inverted :(
#endif
#endif
standby_mode();
}
// catch up on interrupts
handle_deferred_interrupts();
// turn delays back on, if they were off
nice_delay_interrupt = 0;
// give the recipe some time slices
loop();
}
}
void handle_deferred_interrupts() {
/*
if (irq_pcint) { // button pressed or released
// nothing to do here
// (PCINT only matters during standby)
}
*/
if (irq_adc) { // ADC done measuring
adc_deferred();
// irq_adc = 0; // takes care of itself
}
if (irq_wdt) { // the clock ticked
WDT_inner();
// irq_wdt = 0; // takes care of itself
}
}
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