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Diffstat (limited to 'spaghetti-monster/fsm-events.c')
| -rw-r--r-- | spaghetti-monster/fsm-events.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/spaghetti-monster/fsm-events.c b/spaghetti-monster/fsm-events.c deleted file mode 100644 index 6987ae2..0000000 --- a/spaghetti-monster/fsm-events.c +++ /dev/null @@ -1,198 +0,0 @@ -// fsm-events.c: Event-handling functions for SpaghettiMonster. -// Copyright (C) 2017-2023 Selene ToyKeeper -// SPDX-License-Identifier: GPL-3.0-or-later - -#pragma once - -#include <util/delay_basic.h> - - -void append_emission(Event event, uint16_t arg) { - uint8_t i; - // find last entry - for(i=0; - (i<EMISSION_QUEUE_LEN) && (emissions[i].event != EV_none); - i++) { } - // add new entry - if (i < EMISSION_QUEUE_LEN) { - emissions[i].event = event; - emissions[i].arg = arg; - } else { - // TODO: if queue full, what should we do? - } -} - -void delete_first_emission() { - uint8_t i; - for(i=0; i<EMISSION_QUEUE_LEN-1; i++) { - emissions[i].event = emissions[i+1].event; - emissions[i].arg = emissions[i+1].arg; - } - emissions[i].event = EV_none; - emissions[i].arg = 0; -} - -void process_emissions() { - while (emissions[0].event != EV_none) { - emit_now(emissions[0].event, emissions[0].arg); - delete_first_emission(); - } -} - -// Call stacked callbacks for the given event until one handles it. -uint8_t emit_now(Event event, uint16_t arg) { - for(int8_t i=state_stack_len-1; i>=0; i--) { - uint8_t err = state_stack[i](event, arg); - if (! err) return 0; - } - return 1; // event not handled -} - -void emit(Event event, uint16_t arg) { - // add this event to the queue for later, - // so we won't use too much time during an interrupt - append_emission(event, arg); -} - -void emit_current_event(uint16_t arg) { - emit(current_event, arg); -} - -void empty_event_sequence() { - current_event = EV_none; - ticks_since_last_event = 0; - // when the user completes an input sequence, interrupt any running timers - // to cancel any delays currently in progress - // This eliminates a whole bunch of extra code: - // before: if (! nice_delay_ms(ms)) {break;} - // after: nice_delay_ms(ms); - interrupt_nice_delays(); -} - -uint8_t push_event(uint8_t ev_type) { // only for use by PCINT_inner() - // don't do this here; do it in PCINT_inner() instead - //ticks_since_last_event = 0; // something happened - - // only click events are sent to this function - current_event |= B_CLICK; - - // handle button presses - if (ev_type == B_PRESS) { - // set press flag - current_event |= B_PRESS; - // increase click counter - if ((current_event & B_COUNT) < (B_COUNT)) { - current_event ++; - } - return 1; // event pushed, even if max clicks already reached - // (will just repeat the max over and over) - } - // handle button releases - else if (ev_type == B_RELEASE) { - // clear the press flag - current_event &= (~B_PRESS); - // if a "hold" event just ended, set the timeout flag - // to indicate that the event is done and can be cleared - if (current_event & B_HOLD) { current_event |= B_TIMEOUT; } - return 1; // event pushed - } - - return 0; // unexpected event type -} - - -// explicitly interrupt these "nice" delays -volatile uint8_t nice_delay_interrupt = 0; -inline void interrupt_nice_delays() { nice_delay_interrupt = 1; } - -// like delay_ms, except it aborts on state change -// return value: -// 0: state changed -// 1: normal completion -uint8_t nice_delay_ms(uint16_t ms) { - /* // delay_zero() implementation - if (ms == 0) { - CLKPR = 1<<CLKPCE; CLKPR = 0; // full speed - _delay_loop_2(BOGOMIPS*95/100/3); - return 1; - } - */ - while(ms-- > 0) { - if (nice_delay_interrupt) { - return 0; - } - - #ifdef USE_DYNAMIC_UNDERCLOCKING - #ifdef USE_RAMPING - uint8_t level = actual_level; // volatile, avoid repeat access - if (level < QUARTERSPEED_LEVEL) { - clock_prescale_set(clock_div_4); - _delay_loop_2(BOGOMIPS*DELAY_FACTOR/100/4); - } - //else if (level < HALFSPEED_LEVEL) { - // clock_prescale_set(clock_div_2); - // _delay_loop_2(BOGOMIPS*95/100/2); - //} - else { - clock_prescale_set(clock_div_1); - _delay_loop_2(BOGOMIPS*DELAY_FACTOR/100); - } - // restore regular clock speed - clock_prescale_set(clock_div_1); - #else - // underclock MCU to save power - clock_prescale_set(clock_div_4); - // wait - _delay_loop_2(BOGOMIPS*DELAY_FACTOR/100/4); - // restore regular clock speed - clock_prescale_set(clock_div_1); - #endif // ifdef USE_RAMPING - #else - // wait - _delay_loop_2(BOGOMIPS*DELAY_FACTOR/100); - #endif // ifdef USE_DYNAMIC_UNDERCLOCKING - - // run pending system processes while we wait - handle_deferred_interrupts(); - - // handle events only afterward, so that any collapsed delays will - // finish running the UI's loop() code before taking any further actions - // (this helps make sure code runs in the correct order) - // (otherwise, a new state's EV_enter runs before the old state's - // loop() has finished, and things can get weird) - process_emissions(); - } - return 1; -} - -#ifdef USE_DYNAMIC_UNDERCLOCKING -void delay_4ms(uint8_t ms) { - while(ms-- > 0) { - // underclock MCU to save power - clock_prescale_set(clock_div_4); - // wait - _delay_loop_2(BOGOMIPS*98/100); - // restore regular clock speed - clock_prescale_set(clock_div_1); - } -} -#else -void delay_4ms(uint8_t ms) { - while(ms-- > 0) { - // wait - _delay_loop_2(BOGOMIPS*398/100); - } -} -#endif -/* -uint8_t nice_delay_4ms(uint8_t ms) { - return nice_delay_ms((uint16_t)ms << 2); -} -*/ - -/* -uint8_t nice_delay_s() { - return nice_delay_4ms(250); -} -*/ - |