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/*
* The MIT License (MIT)
*
* Copyright (c) 2016 Matthias P. Braendli
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _FSM_H_
#define _FSM_H_
#include <stdint.h>
// List of all states the FSM of the relay can be in
enum fsm_state_e {
FSM_OISIF = 0, // Idle
FSM_OPEN1, // 1750 Hz received and squelch open
FSM_OPEN2, // Squelch closed
FSM_LETTRE, // Transmit single status letter
FSM_ECOUTE, // Repeater open, waiting for QSO
FSM_ATTENTE, // No QSO after a short while
FSM_QSO, // QSO ongoing
FSM_ANTI_BAVARD, // QSO too long, cut transmission
FSM_BLOQUE, // Backoff after ANTI_BAVARD
FSM_TEXTE_73, // Transmit 73 after QSO
FSM_TEXTE_HB9G, // Transmit HB9G after QSO
FSM_TEXTE_LONG, // Transmit either HB9G JN36BK or HB9G 1628M after QSO
FSM_BALISE_LONGUE, // Full-length 2-hour beacon
FSM_BALISE_SPECIALE, // 2-hour beacon when in QRP or with high power return mode
FSM_BALISE_COURTE, // Short intermittent beacon
FSM_BALISE_COURTE_OPEN, // Short intermittent beacon, need to switch to OPEN
_NUM_FSM_STATES // Dummy state to count the number of states
};
typedef enum fsm_state_e fsm_state_t;
// All signals that the FSM can read, most of them are actually booleans
struct fsm_input_signals_t {
/* Signals coming from repeater electronics */
int sq; // Squelch detection
int discrim_u; // FM discriminator says RX is too high in frequency
int qrp; // The relay is currently running with low power
int start_tm; // 2-hour pulse
float temp; // temperature in degrees C
float humidity; // relative humidity, range [0-100] %
int wind_generator_ok; // false if the generator is folded out of the wind
int discrim_d; // FM discriminator says RX is too low in frequency
int tone_1750; // Detect 1750Hz tone
int sstv_mode; // The 1750Hz filter is disabled, permitting SSTV usage
/* Signals coming from CW and PSK generator */
int cw_psk31_done; // The CW and PSK generator has finished transmitting the message
/* Signal coming from the standing wave ratio meter */
int swr_high; // We see a lot of return power
};
// All signals the FSM has to control
struct fsm_output_signals_t {
/* Signals to the repeater electronics */
int tx_on; // Enable TX circuitry
int modulation; // Enable repeater RX to TX modulation
/* Signals to the CW and PSK generator */
const char* msg; // The message to transmit
int msg_frequency; // What audio frequency for the CW or PSK message
int cw_dit_duration; // CW speed, dit duration in ms
int cw_psk31_trigger; // Set to true to trigger a CW or PSK31 transmission.
// PSK31 is sent if cw_dit_duration is 0
/* Acknowledgements for input signals */
int ack_start_tm; // Set to 1 to clear start_tm
};
// Initialise local structures
void fsm_init(void);
// Call the FSM once and update the internal state
void fsm_update(void);
// Setter for inputs
void fsm_update_inputs(struct fsm_input_signals_t* inputs);
// Getter for outputs
void fsm_get_outputs(struct fsm_output_signals_t* out);
// Announce a state change
void fsm_state_switched(const char *new_state);
uint64_t fsm_current_state_time_ms(void);
uint64_t fsm_current_state_time_s(void);
const char* fsm_select_letter(void);
#endif // _FSM_H_
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