Created
May 2, 2022 09:00
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| #define AWAIT(a) if (a != OK) continue; | |
| status_t _connect(state_t *state) | |
| { | |
| if (state >= CONNECTED) { | |
| return OK; | |
| } | |
| // do connect, return FAIL if failed | |
| state = CONNECTED; | |
| return OK; | |
| } | |
| status_t _register(state_t *state) | |
| { | |
| if (state < CONNECTED) { | |
| return FAIL; | |
| } | |
| if (state > CONNECTED) { | |
| return OK; | |
| } | |
| // do register, return FAIL if failed | |
| state = DATA; | |
| return OK; | |
| } | |
| status_t _exchange_data(state_t *state) | |
| { | |
| if (state != DATA) { | |
| return FAIL; | |
| } | |
| return OK; | |
| } | |
| void main() { | |
| state_t state = INITILIZED; | |
| while (true) { | |
| AWAIT(_connect(&state)); | |
| AWAIT(_register(&state)); | |
| AWAIT(_exchange_data(&state)); | |
| } | |
| } |
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