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https://github.com/SemvdH/OBD2-car-display.git
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60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
#ifndef STATEMACHINE_H
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#define STATEMACHINE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "Arduino.h"
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/* two displays:
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- initialisation display, shows the state of booting up
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- main display, shows the data from the OBD2 scanner
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each state has a function that can be called when it enters that state, while it's running and when it exits that state
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Example: https://stackoverflow.com/questions/1371460/state-machines-tutorials
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*/
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/**
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* @brief State struct. Contains the id of the state, and the functions that are called when the state is entered, running and exited.
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*/
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typedef struct SM_STATE
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{
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int id;
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void (*on_enter)();
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void (*on_run)();
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void (*on_exit)();
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} state_t;
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/**
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* @brief Transition struct. Contains the id of the state it transitions to, and the next state.
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*/
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typedef struct SM_TRANSITION
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{
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int state_id;
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state_t *next_state;
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} transition_t;
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/**
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* @brief State machine struct. Contains the current state and the transitions.
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*/
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typedef struct SM_STATE_MACHINE
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{
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state_t *current_state;
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transition_t *transitions; /* Transitions between states. Every state's ID is also it's position in the array.*/
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} statemachine_t;
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/**
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* @brief Initialises the state machine. Initializes the statemachine struct.
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*/
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void statemachine_init();
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void __state_none()
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{
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/* do nothing*/
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}
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#ifdef __cplusplus
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}
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#endif
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#endif // !STATEMACHINE_H
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