99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
#include <stdio.h>
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#include <stdbool.h>
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#include "automat.h"
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typedef enum {A=0, B, C, D, E, F, NR_OF_STATES} state_t;
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static state_t s_curstate = A;
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static int s_guthaben = 0;
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static bool s_kaffee_los = false;
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static bool s_muenz_rueck = false;
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static bool s_display = false;
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static const char* s_display_string = "Warten";
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void automat_reset(void)
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{
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s_curstate = A;
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s_guthaben = 0;
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s_kaffee_los = false;
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s_muenz_rueck = false;
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s_display = false;
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s_display_string = "Warten";
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}
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void automat_transition(BOOL becher, BOOL muenze, BOOL muenz_wert)
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{
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s_kaffee_los = false;
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s_muenz_rueck = false;
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s_display = false;
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int wert = muenz_wert ? 2 : 1;
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switch (s_curstate) {
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case A: case B: case C: case D: case E:
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// Münzeinwurf
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if (muenze) {
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if (s_guthaben + wert > 4) {
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s_muenz_rueck = true;
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s_display = true;
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s_display_string = "Zu viel! Münze zurück";
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break;
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} else {
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s_guthaben += wert;
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}
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}
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// Guthaben prüfen
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if (s_guthaben < 4) {
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if (s_guthaben == 0) { s_curstate = A; s_display_string = "Warten"; }
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else if (s_guthaben == 1) { s_curstate = B; s_display_string = "1 Euro"; }
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else if (s_guthaben == 2) { s_curstate = C; s_display_string = "2 Euro"; }
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else if (s_guthaben == 3) { s_curstate = D; s_display_string = "3 Euro"; }
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// Kein Display aktivieren!
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} else if (s_guthaben == 4) {
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if (becher) {
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s_curstate = F;
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s_kaffee_los = true;
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s_display = true;
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s_display_string = "Kaffee wird ausgegeben";
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s_guthaben = 0;
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} else {
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s_curstate = E;
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s_display = true;
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s_display_string = "Bitte Becher unterstellen!";
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}
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}
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break;
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case F:
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s_display = true;
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s_display_string = "Becher entnehmen";
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if (!becher) {
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s_curstate = A;
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s_display = false;
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s_display_string = "Warten";
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}
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break;
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default:
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s_curstate = A;
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s_guthaben = 0;
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s_display = false;
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s_display_string = "Warten";
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break;
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}
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}
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fsm_action_t automat_output(void)
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{
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return (fsm_action_t){
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.display = s_display,
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.muenz_rueck = s_muenz_rueck,
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.kaffee_los = s_kaffee_los,
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.guthaben = s_guthaben,
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.display_string = s_display_string
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};
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}
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//gcc automat.c view.c main.c io.c checker.c -o console_automat
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