Add POCSAG Receiver plugin

2025-12-12 20:49:49 +04:00 · 2022-12-10 20:08:17 +03:00
parent 35a4eef3fc
commit 2fcff37f88
35 changed files with 2718 additions and 0 deletions
--- a/applications/plugins/pocsag_pager/pocsag_pager_app_i.c
+++ b/applications/plugins/pocsag_pager/pocsag_pager_app_i.c
@@ -0,0 +1,141 @@
+#include "pocsag_pager_app_i.h"
+
+#define TAG "POCSAGPager"
+#include <flipper_format/flipper_format_i.h>
+
+void pcsg_preset_init(
+    void* context,
+    const char* preset_name,
+    uint32_t frequency,
+    uint8_t* preset_data,
+    size_t preset_data_size) {
+    furi_assert(context);
+    POCSAGPagerApp* app = context;
+    furi_string_set(app->txrx->preset->name, preset_name);
+    app->txrx->preset->frequency = frequency;
+    app->txrx->preset->data = preset_data;
+    app->txrx->preset->data_size = preset_data_size;
+}
+
+void pcsg_get_frequency_modulation(
+    POCSAGPagerApp* app,
+    FuriString* frequency,
+    FuriString* modulation) {
+    furi_assert(app);
+    if(frequency != NULL) {
+        furi_string_printf(
+            frequency,
+            "%03ld.%02ld",
+            app->txrx->preset->frequency / 1000000 % 1000,
+            app->txrx->preset->frequency / 10000 % 100);
+    }
+    if(modulation != NULL) {
+        furi_string_printf(modulation, "%.2s", furi_string_get_cstr(app->txrx->preset->name));
+    }
+}
+
+void pcsg_begin(POCSAGPagerApp* app, uint8_t* preset_data) {
+    furi_assert(app);
+    UNUSED(preset_data);
+    furi_hal_subghz_reset();
+    furi_hal_subghz_idle();
+    furi_hal_subghz_load_custom_preset(preset_data);
+    furi_hal_gpio_init(&gpio_cc1101_g0, GpioModeInput, GpioPullNo, GpioSpeedLow);
+    app->txrx->txrx_state = PCSGTxRxStateIDLE;
+}
+
+uint32_t pcsg_rx(POCSAGPagerApp* app, uint32_t frequency) {
+    furi_assert(app);
+    if(!furi_hal_subghz_is_frequency_valid(frequency)) {
+        furi_crash("POCSAGPager: Incorrect RX frequency.");
+    }
+    furi_assert(
+        app->txrx->txrx_state != PCSGTxRxStateRx && app->txrx->txrx_state != PCSGTxRxStateSleep);
+
+    furi_hal_subghz_idle();
+    uint32_t value = furi_hal_subghz_set_frequency_and_path(frequency);
+    furi_hal_gpio_init(&gpio_cc1101_g0, GpioModeInput, GpioPullNo, GpioSpeedLow);
+    furi_hal_subghz_flush_rx();
+    furi_hal_subghz_rx();
+
+    furi_hal_subghz_start_async_rx(subghz_worker_rx_callback, app->txrx->worker);
+    subghz_worker_start(app->txrx->worker);
+    app->txrx->txrx_state = PCSGTxRxStateRx;
+    return value;
+}
+
+void pcsg_idle(POCSAGPagerApp* app) {
+    furi_assert(app);
+    furi_assert(app->txrx->txrx_state != PCSGTxRxStateSleep);
+    furi_hal_subghz_idle();
+    app->txrx->txrx_state = PCSGTxRxStateIDLE;
+}
+
+void pcsg_rx_end(POCSAGPagerApp* app) {
+    furi_assert(app);
+    furi_assert(app->txrx->txrx_state == PCSGTxRxStateRx);
+    if(subghz_worker_is_running(app->txrx->worker)) {
+        subghz_worker_stop(app->txrx->worker);
+        furi_hal_subghz_stop_async_rx();
+    }
+    furi_hal_subghz_idle();
+    app->txrx->txrx_state = PCSGTxRxStateIDLE;
+}
+
+void pcsg_sleep(POCSAGPagerApp* app) {
+    furi_assert(app);
+    furi_hal_subghz_sleep();
+    app->txrx->txrx_state = PCSGTxRxStateSleep;
+}
+
+void pcsg_hopper_update(POCSAGPagerApp* app) {
+    furi_assert(app);
+
+    switch(app->txrx->hopper_state) {
+    case PCSGHopperStateOFF:
+        return;
+        break;
+    case PCSGHopperStatePause:
+        return;
+        break;
+    case PCSGHopperStateRSSITimeOut:
+        if(app->txrx->hopper_timeout != 0) {
+            app->txrx->hopper_timeout--;
+            return;
+        }
+        break;
+    default:
+        break;
+    }
+    float rssi = -127.0f;
+    if(app->txrx->hopper_state != PCSGHopperStateRSSITimeOut) {
+        // See RSSI Calculation timings in CC1101 17.3 RSSI
+        rssi = furi_hal_subghz_get_rssi();
+
+        // Stay if RSSI is high enough
+        if(rssi > -90.0f) {
+            app->txrx->hopper_timeout = 10;
+            app->txrx->hopper_state = PCSGHopperStateRSSITimeOut;
+            return;
+        }
+    } else {
+        app->txrx->hopper_state = PCSGHopperStateRunnig;
+    }
+    // Select next frequency
+    if(app->txrx->hopper_idx_frequency <
+       subghz_setting_get_hopper_frequency_count(app->setting) - 1) {
+        app->txrx->hopper_idx_frequency++;
+    } else {
+        app->txrx->hopper_idx_frequency = 0;
+    }
+
+    if(app->txrx->txrx_state == PCSGTxRxStateRx) {
+        pcsg_rx_end(app);
+    };
+    if(app->txrx->txrx_state == PCSGTxRxStateIDLE) {
+        subghz_receiver_reset(app->txrx->receiver);
+        app->txrx->preset->frequency =
+            subghz_setting_get_hopper_frequency(app->setting, app->txrx->hopper_idx_frequency);
+        pcsg_rx(app, app->txrx->preset->frequency);
+    }
+}