mirror of
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90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
/*
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* Copyright (C) 2024 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
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* GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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/**
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* @title Finite State Machine (FSM)
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*
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*/
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#define BTSTACK_FILE__ "btstack_fsm.c"
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#include <stddef.h>
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#include "btstack_fsm.h"
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#include "btstack_config.h"
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#include "btstack_debug.h"
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static btstack_fsm_event_t const entry_evt = { BTSTACK_FSM_ENTRY_SIG };
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static btstack_fsm_event_t const exit_evt = { BTSTACK_FSM_EXIT_SIG };
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btstack_fsm_state_t btstack_fsm_transit(btstack_fsm_t *me, btstack_fsm_state_handler_t target) {
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me->state = target;
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return BTSTACK_FSM_TRAN_STATUS;
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}
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void btstack_fsm_constructor(btstack_fsm_t * const me, btstack_fsm_state_handler_t initial) {
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me->state = initial;
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}
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void btstack_fsm_init(btstack_fsm_t * const me, btstack_fsm_event_t const * const e) {
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btstack_assert(me->state != NULL);
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me->state(me, e);
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me->state(me, &entry_evt);
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}
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btstack_fsm_state_t btstack_fsm_dispatch(btstack_fsm_t * const me, btstack_fsm_event_t const * const e) {
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btstack_fsm_state_t status;
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btstack_fsm_state_handler_t prev_state = me->state;
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btstack_assert( me->state != NULL );
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status = me->state(me, e);
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if( status == BTSTACK_FSM_TRAN_STATUS ) {
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prev_state(me, &exit_evt);
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me->state(me, &entry_evt);
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}
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return status;
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}
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void btstack_fsm_dispatch_until(btstack_fsm_t * const me, btstack_fsm_event_t const * const e) {
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btstack_fsm_state_t status;
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do {
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status = btstack_fsm_dispatch( me, e );
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} while( status == BTSTACK_FSM_TRAN_STATUS );
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}
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