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-rw-r--r--src/fsm/fsm.c346
1 files changed, 346 insertions, 0 deletions
diff --git a/src/fsm/fsm.c b/src/fsm/fsm.c
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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 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.
+*/
+
+#include <string.h>
+#include "common.h"
+#include "fsm.h"
+
+static struct fsm_input_signals_t fsm_in;
+static struct fsm_output_signals_t fsm_out;
+
+static fsm_state_t current_state;
+
+// Keep track of when we last entered a given state, measured
+// in ms using the timestamp_now() function
+static uint64_t timestamp_state[_NUM_FSM_STATES];
+
+void fsm_init() {
+ memset(&fsm_in, 0, sizeof(fsm_in));
+ memset(&fsm_out, 0, sizeof(fsm_out));
+
+ memset(timestamp_state, 0, _NUM_FSM_STATES * sizeof(*timestamp_state));
+ timestamp_state[FSM_OISIF] = timestamp_now();
+
+ current_state = FSM_OISIF;
+}
+
+// Calculate the time spent in the current state
+uint64_t fsm_current_state_time_ms(void) {
+ return timestamp_now() - timestamp_state[current_state];
+}
+
+uint64_t fsm_current_state_time_s(void) {
+ return fsm_current_state_time_ms() / 1000;
+}
+
+// Between turns in a QSO, the repeater sends a letter in CW,
+// different messages are possible. They are sorted here from
+// low to high priority.
+const char* letter_all_ok = "k";
+const char* letter_sstv = "s";
+const char* letter_qrp = "g";
+const char* letter_freq_high = "u";
+const char* letter_freq_low = "d";
+const char* letter_swr_high = "r";
+
+const char* fsm_select_letter(void) {
+ if (fsm_in.swr_high) {
+ return letter_swr_high;
+ }
+ else if (fsm_in.discrim_d) {
+ return letter_freq_low;
+ }
+ else if (fsm_in.discrim_u) {
+ return letter_freq_high;
+ }
+ else if (fsm_in.qrp) {
+ return letter_qrp;
+ }
+ else if (fsm_in.sstv_mode) {
+ return letter_sstv;
+ }
+
+ return letter_all_ok;
+}
+
+void fsm_update() {
+
+ fsm_state_t next_state = current_state;
+
+ // Some defaults for the outgoing signals
+ fsm_out.tx_on = 0;
+ fsm_out.modulation = 0;
+ fsm_out.cw_trigger = 0;
+ fsm_out.cw_speed = 23;
+ fsm_out.cw_frequency = 300;
+ // other output signals keep their value
+
+ switch (current_state) {
+ case FSM_OISIF:
+ if (fsm_in.tone_1750 && fsm_in.sq) {
+ next_state = FSM_OPEN1;
+ }
+ else if (fsm_in.start_tm) {
+ if (fsm_in.qrp || fsm_in.swr_high) {
+ next_state = FSM_BALISE_SPECIALE;
+ }
+ else {
+ next_state = FSM_BALISE_LONGUE;
+ }
+ }
+ else if (!fsm_in.qrp && fsm_current_state_time_s() > 20 * 60) {
+ next_state = FSM_BALISE_COURTE;
+ }
+ break;
+
+ case FSM_OPEN1:
+ fsm_out.tx_on = 1;
+
+ if (!fsm_in.sq) {
+ next_state = FSM_OPEN2;
+ }
+ break;
+
+ case FSM_OPEN2:
+ fsm_out.tx_on = 1;
+ fsm_out.modulation = 1;
+
+ if (fsm_current_state_time_ms() > 200) {
+ next_state = FSM_LETTRE;
+ }
+ break;
+
+ case FSM_LETTRE:
+ fsm_out.tx_on = 1;
+ fsm_out.modulation = 1;
+ fsm_out.cw_msg = fsm_select_letter();
+ fsm_out.cw_trigger = 1;
+
+ if (fsm_in.cw_done) {
+ next_state = FSM_ECOUTE;
+ }
+ break;
+
+ case FSM_ECOUTE:
+ fsm_out.tx_on = 1;
+ fsm_out.modulation = 1;
+
+ if (fsm_in.sq) {
+ next_state = FSM_QSO;
+ }
+ else if (fsm_current_state_time_s() > 6 &&
+ timestamp_state[FSM_ECOUTE] - timestamp_state[FSM_OPEN2] <
+ 1000ul * 5) {
+ next_state = FSM_ATTENTE;
+ }
+ else if (fsm_current_state_time_s() > 5 &&
+ timestamp_state[FSM_ECOUTE] - timestamp_state[FSM_OPEN2] <
+ 1000ul * 5 * 60) {
+ next_state = FSM_OISIF;
+ }
+ else if (fsm_current_state_time_s() > 5 &&
+ timestamp_state[FSM_ECOUTE] - timestamp_state[FSM_OPEN2] <
+ 1000ul * 10 * 60) {
+ next_state = FSM_TEXTE_73;
+ }
+ else if (fsm_current_state_time_s() > 5 &&
+ timestamp_state[FSM_ECOUTE] - timestamp_state[FSM_OPEN2] <
+ 1000ul * 15 * 60) {
+ next_state = FSM_TEXTE_HB9G;
+ }
+ else if (fsm_current_state_time_s() > 5 &&
+ timestamp_state[FSM_ECOUTE] - timestamp_state[FSM_OPEN2] >=
+ 1000ul * 15 * 60) {
+ next_state = FSM_TEXTE_LONG;
+ }
+ break;
+
+ case FSM_ATTENTE:
+ if (fsm_in.sq) {
+ next_state = FSM_ECOUTE;
+ }
+ else if (fsm_current_state_time_s() > 15) {
+ next_state = FSM_OISIF;
+ }
+ break;
+
+ case FSM_QSO:
+ fsm_out.tx_on = 1;
+ fsm_out.modulation = 1;
+
+ if (!fsm_in.sq) {
+ next_state = FSM_LETTRE;
+ }
+ else if (fsm_current_state_time_s() > 5 * 60) {
+ next_state = FSM_ANTI_BAVARD;
+ }
+ break;
+
+ case FSM_ANTI_BAVARD:
+ fsm_out.tx_on = 1;
+ // No modulation!
+ fsm_out.cw_msg = "hi hi";
+ fsm_out.cw_trigger = 1;
+
+ if (fsm_in.cw_done) {
+ next_state = FSM_BLOQUE;
+ }
+ break;
+
+ case FSM_BLOQUE:
+ if (fsm_current_state_time_s() > 10) {
+ next_state = FSM_OISIF;
+ }
+ break;
+
+ case FSM_TEXTE_73:
+ fsm_out.tx_on = 1;
+ fsm_out.modulation = 1;
+ fsm_out.cw_msg = "73";
+ fsm_out.cw_trigger = 1;
+
+ if (fsm_in.sq) {
+ next_state = FSM_QSO;
+ }
+ else if (fsm_in.cw_done) {
+ next_state = FSM_OISIF;
+ }
+ break;
+
+ case FSM_TEXTE_HB9G:
+ fsm_out.tx_on = 1;
+ fsm_out.modulation = 1;
+ fsm_out.cw_msg = "hb9g";
+ fsm_out.cw_trigger = 1;
+
+ if (fsm_in.sq) {
+ next_state = FSM_QSO;
+ }
+ else if (fsm_in.cw_done) {
+ next_state = FSM_OISIF;
+ }
+ break;
+
+ case FSM_TEXTE_LONG:
+ fsm_out.tx_on = 1;
+ fsm_out.modulation = 1;
+
+ if (random_bool()) {
+ fsm_out.cw_msg = "hb9g 1628m";
+ }
+ else {
+ fsm_out.cw_msg = "hb9g jn36bk";
+ }
+ fsm_out.cw_trigger = 1;
+
+ if (fsm_in.sq) {
+ next_state = FSM_QSO;
+ }
+ else if (fsm_in.cw_done) {
+ next_state = FSM_OISIF;
+ }
+ break;
+
+ case FSM_BALISE_LONGUE:
+ fsm_out.tx_on = 1;
+
+ // TODO transmit humidity
+ // TODO read voltage
+ if (fsm_in.wind_generator_ok) {
+ fsm_out.cw_msg = "hb9g jn36bk 1628m u 10v5 = T 11 73";
+ // = means same voltage as previous
+ // + means higher
+ // - means lower
+ }
+ else {
+ fsm_out.cw_msg = "hb9g jn36bk 1628m u 10v5 = T 11 #";
+ // The # is the SK digraph
+ }
+ fsm_out.cw_trigger = 1;
+
+ if (fsm_in.sq) {
+ next_state = FSM_OPEN2;
+ }
+ else if (fsm_in.cw_done) {
+ next_state = FSM_OISIF;
+ }
+ break;
+
+ case FSM_BALISE_SPECIALE:
+ fsm_out.tx_on = 1;
+ // TODO read voltage
+ if (fsm_in.wind_generator_ok) {
+ fsm_out.cw_msg = "hb9g u 10v5 73";
+ }
+ else {
+ fsm_out.cw_msg = "hb9g u 10v5 #"; // The # is the SK digraph
+ }
+ fsm_out.cw_trigger = 1;
+
+ if (fsm_in.sq) {
+ next_state = FSM_OPEN2;
+ }
+ else if (fsm_in.cw_done) {
+ next_state = FSM_OISIF;
+ }
+ break;
+
+ case FSM_BALISE_COURTE:
+ fsm_out.tx_on = 1;
+
+ {
+ int rand = random_bool() * 2 + random_bool();
+
+ if (rand == 0) {
+ fsm_out.cw_msg = "hb9g";
+ }
+ else if (rand == 1) {
+ fsm_out.cw_msg = "hb9g jn36bk";
+ }
+ else if (rand == 2) {
+ fsm_out.cw_msg = "hb9g 1628m";
+ }
+ else {
+ fsm_out.cw_msg = "hb9g jn36bk 1628m";
+ }
+ }
+ fsm_out.cw_trigger = 1;
+
+ if (fsm_in.sq) {
+ next_state = FSM_OPEN2;
+ }
+ else if (fsm_in.cw_done) {
+ next_state = FSM_OISIF;
+ }
+ break;
+ default:
+ // Should never happen
+ next_state = FSM_OISIF;
+ break;
+ }
+
+ current_state = next_state;
+ timestamp_state[next_state] = timestamp_now();
+}
+
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