Release v1.11 (API 87.1)

Applications/UberGuidoZ/README.md

@@ -1 +1,16 @@
 # Flipper Apps by UberGuidoZ
+
+[GPIO Logic Analyzer](https://github.com/UberGuidoZ/Flipper/tree/main/Applications/UberGuidoZ/gpio_logic_analyzer/)
+
+A logic analyzer that monitors all 8 exposed GPIO pins on the Flipper Zero
+18-pin header, draws live scrolling waveforms on the 128x64 OLED, and logs
+every sample to a timestamped CSV file on the SD card, with instructions.
+
+---
+
+[Smart Meter Monitor](https://github.com/UberGuidoZ/Flipper/tree/main/Applications/UberGuidoZ/smart_meter_monitor/)
+
+Monitors the 433 MHz, 868 MHz, and 915 MHz bands for smart meter
+radio transmissions using the Flipper Zero's built-in CC1101
+sub-GHz radio. Displays live RSSI as a scrolling waveform,
+detects signal bursts, and tracks transmission intervals.

Applications/UberGuidoZ/smart_meter_monitor/README.md

@@ -0,0 +1,148 @@
+# Smart Meter Monitor - Flipper Zero FAP  v1.11
+
+By: UberGuidoZ | https://github.com/UberGuidoZ/Flipper
+
+Code: [Applications/UberGuidoZ/smart_meter_monitor/Source](https://github.com/UberGuidoZ/Flipper/tree/main/Applications/UberGuidoZ/smart_meter_monitor/Source)
+
+Monitors the 433 MHz, 868 MHz, and 915 MHz bands for smart meter
+radio transmissions using the Flipper Zero's built-in CC1101
+sub-GHz radio. Displays live RSSI as a scrolling waveform,
+detects signal bursts, and tracks transmission intervals.
+
+---
+
+## What It Does
+
+Most North American electric and gas meters use the ERT (Encoder
+Receiver Transmitter) protocol at 915 MHz, broadcasting
+unencrypted SCM (Standard Consumption Message) packets every
+30-90 seconds. European meters typically use 868 MHz. Some water
+meters use 433 MHz.
+
+This app monitors RSSI (signal strength) in real time. When a
+meter transmits, a spike appears in the waveform and is counted
+as a detection event. The app tracks how often transmissions
+occur, giving you the broadcast interval of meters in range.
+
+No packet decoding is performed - this is energy detection only.
+
+---
+
+## Display
+
+```
+Meter Monitor     915MHz 500ms
+[RSSI waveform - 128 samples, newest on right]
+[dashed threshold line across waveform]
+-90dBm Cnt:003
+Int: 47s Avg: 52s
+```
+
+- Waveform bars show RSSI from -120 dBm (bottom) to -40 dBm (top)
+- Dashed line marks the burst detection threshold
+- Cnt: total detected transmissions since last reset
+- Int: interval between last two detections (seconds)
+- Avg: exponential moving average of all intervals
+
+When fewer than 2 bursts have been detected, line 2 shows the
+current threshold and "---" for interval.
+
+---
+
+## Controls
+
+| Button      | Action                                 |
+|-------------|----------------------------------------|
+| OK (short)  | Pause / resume capture (II indicator)  |
+| OK (long)   | Reset stats and waveform history       |
+| UP          | Raise threshold (less sensitive)       |
+| DOWN        | Lower threshold (more sensitive)       |
+| LEFT        | Previous frequency (cycle 433/868/915) |
+| RIGHT       | Next frequency                         |
+| BACK        | Stop radio, return to menu             |
+
+---
+
+## Frequencies
+
+| Frequency  | Region         | Meter type           |
+|------------|----------------|----------------------|
+| 433.92 MHz | Worldwide      | Some water meters    |
+| 868.30 MHz | Europe         | Electric / gas       |
+| 915.00 MHz | North America  | Electric / gas (ERT) |
+
+Change the frequency on the fly with LEFT/RIGHT while monitoring.
+NOTE: Changing frequency resets stats and restarts the radio.
+
+---
+
+## Sample Rates and History Window
+
+| Rate   | History at 128 samples |
+|--------|------------------------|
+| 100 ms |  13 seconds            |
+| 250 ms |  32 seconds            |
+| 500 ms |  64 seconds (default)  |
+| 1 s    | 128 seconds (~2 min)   |
+| 2 s    | 256 seconds (~4 min)   |
+
+UP/DOWN cycles the sample rate while monitoring.
+
+---
+
+## Threshold Adjustment
+
+The dashed line on the waveform marks the burst detection
+threshold. Adjust with UP/DOWN in 5 dBm steps (-110 to -60 dBm).
+
+Default: -90 dBm. Start here and watch the ambient RSSI noise
+floor. Raise the threshold until it sits clearly above the noise
+floor but below the meter transmission spikes.
+
+Typical noise floor: -100 to -105 dBm
+Typical meter transmission RSSI: -60 to -90 dBm (distance-dependent)
+
+---
+
+## Building
+
+```sh
+pip install --upgrade ufbt
+ufbt update
+cd smart_meter_monitor
+ufbt launch
+```
+
+Output: `dist/smart_meter_monitor.fap`
+Install to: `/ext/apps/Sub-GHz/smart_meter_monitor.fap`
+
+---
+
+## File Structure
+
+```
+smart_meter_monitor/
+  application.fam        - ufbt app manifest
+  smart_meter.h          - shared types, constants, app struct
+  smart_meter_app.c      - entry point, alloc/free, scene handler table
+  scene_splash.c         - splash screen (3s auto-advance)
+  scene_menu.c           - main menu
+  scene_freq.c           - frequency selector submenu
+  scene_monitor.c        - CC1101 capture, waveform, burst detection
+  scene_instructions.c   - 4-page on-screen reference
+  scene_about.c          - about screen
+  README.md              - this file
+```
+
+---
+
+## Notes
+
+- The app uses the CC1101 HAL directly. Do not launch while the
+  built-in Sub-GHz app is actively scanning.
+- Burst detection uses hysteresis: 2 consecutive samples above
+  threshold to enter, 3 consecutive samples below to exit. This
+  prevents spurious counts from momentary noise spikes.
+- The ERT protocol broadcasts every 30-90 seconds depending on
+  meter model and utility configuration. Allow 2-3 minutes of
+  monitoring before drawing conclusions from interval data.

Applications/UberGuidoZ/smart_meter_monitor/Source/application.fam

@@ -0,0 +1,11 @@
+App(
+    appid="smart_meter_monitor",
+    name="Smart Meter Monitor",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="smart_meter_app",
+    requires=["gui", "notification"],
+    stack_size=3 * 1024,
+    fap_category="Sub-GHz",
+    fap_version=(1, 11),
+    fap_icon="smart_meter_icon.png",
+)

Applications/UberGuidoZ/smart_meter_monitor/Source/scene_about.c

@@ -0,0 +1,66 @@
+// ####################################################
+// #  scene_about.c - about screen                    #
+// #  By: UberGuidoZ | https://github.com/UberGuidoZ/ #
+// #  v1.11                                           #
+// ####################################################
+
+#include "smart_meter.h"
+
+static void sm_about_draw_cb(Canvas* canvas, void* model) {
+    UNUSED(model);
+    canvas_clear(canvas);
+
+    // ----------------------------------------------------------
+    // Box around title block measured at runtime for exact
+    // centering. Identical geometry to the splash screen.
+    // ----------------------------------------------------------
+    canvas_set_font(canvas, FontPrimary);
+    size_t w1 = canvas_string_width(canvas, "Smart Meter");
+    size_t w2 = canvas_string_width(canvas, "Monitor");
+    size_t box_w = (w1 > w2 ? w1 : w2) + 16U;
+    int32_t box_x = (int32_t)((128U - box_w) / 2U);
+    if(box_x < 1) box_x = 1;
+    canvas_draw_frame(canvas, box_x, 8, (uint8_t)box_w, 32);
+    canvas_draw_str(canvas, (int32_t)((128U - w1) / 2U), 22, "Smart Meter");
+    canvas_draw_str(canvas, (int32_t)((128U - w2) / 2U), 34, "Monitor");
+
+    // ----------------------------------------------------------
+    // Separator and byline.
+    // ----------------------------------------------------------
+    canvas_draw_line(canvas, 10, 44, 118, 44);
+    canvas_set_font(canvas, FontKeyboard);
+    canvas_draw_str(canvas,  7, 54, "v1.11 by UberGuidoZ");
+    canvas_draw_str(canvas,  1, 62, "github.com/UberGuidoZ");
+}
+
+static bool sm_about_input_cb(InputEvent* event, void* context) {
+    UNUSED(event);
+    UNUSED(context);
+    return false;
+}
+
+void scene_about_setup_view(SmartMeterApp* app) {
+    furi_check(app != NULL);
+
+    app->view_about = view_alloc();
+    furi_check(app->view_about != NULL);
+
+    view_set_draw_callback(app->view_about, sm_about_draw_cb);
+    view_set_input_callback(app->view_about, sm_about_input_cb);
+}
+
+void scene_about_on_enter(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    view_dispatcher_switch_to_view(app->view_dispatcher, SmViewAbout);
+}
+
+bool scene_about_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
+    return false;
+}
+
+void scene_about_on_exit(void* context) {
+    UNUSED(context);
+}

Applications/UberGuidoZ/smart_meter_monitor/Source/scene_freq.c

@@ -0,0 +1,50 @@
+// ####################################################
+// #  scene_freq.c - frequency selector submenu       #
+// #  By: UberGuidoZ | https://github.com/UberGuidoZ/ #
+// #  v1.11                                           #
+// ####################################################
+
+#include "smart_meter.h"
+
+// Frequencies must stay in sync with k_frequencies[] in scene_monitor.c.
+static const char* const k_freq_menu_labels[SM_FREQ_COUNT] = {
+    "433.92 MHz  (some water)",
+    "868.30 MHz  (EU meters)",
+    "915.00 MHz  (US meters)",
+};
+
+static void sm_freq_cb(void* context, uint32_t index) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    app->freq_index = (uint8_t)index;
+    // Pop back to the menu after selection.
+    scene_manager_previous_scene(app->scene_manager);
+}
+
+void scene_freq_on_enter(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    submenu_reset(app->submenu_freq);
+    submenu_set_header(app->submenu_freq, "Select Frequency");
+
+    for(uint8_t i = 0U; i < SM_FREQ_COUNT; i++) {
+        submenu_add_item(app->submenu_freq, k_freq_menu_labels[i], i, sm_freq_cb, app);
+    }
+    // Highlight the currently selected frequency.
+    submenu_set_selected_item(app->submenu_freq, app->freq_index);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, SmViewFreq);
+}
+
+bool scene_freq_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
+    return false;
+}
+
+void scene_freq_on_exit(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    submenu_reset(app->submenu_freq);
+}

Applications/UberGuidoZ/smart_meter_monitor/Source/scene_instructions.c

@@ -0,0 +1,189 @@
+// ######################################################
+// #  scene_instructions.c - 4-page on-screen reference #
+// #  By: UberGuidoZ | https://github.com/UberGuidoZ/   #
+// #  v1.11                                             #
+// ######################################################
+//
+//  Page 1: About Smart Meters
+//  Page 2: Frequencies
+//  Page 3: Display Guide
+//  Page 4: Controls
+//
+//  LEFT  - previous page
+//  RIGHT - next page
+//  BACK  - return to menu
+//
+// ##############################################################
+
+#include "smart_meter.h"
+#include <stdio.h>
+#include <string.h>
+
+static const char* const k_page_titles[SM_INSTR_PAGES] = {
+    "About Smart Meters",
+    "Frequencies",
+    "Display Guide",
+    "Controls",
+};
+
+// Max 21 chars per line (FontKeyboard at 6px/char = 126px)
+static const char* const k_page_body[SM_INSTR_PAGES][SM_INSTR_BODY_LINES] = {
+    // Page 0: About Smart Meters
+    {
+        "Meters broadcast ERT",
+        "packets every 30-60s",
+        "CC1101 detects RSSI",
+        "spikes from each TX",
+        "No decoding needed",
+    },
+    // Page 1: Frequencies
+    {
+        "433MHz some water",
+        "868.30MHz EU electric",
+        "915.00MHz US electric",
+        "LEFT/RIGHT to change",
+        "Changing freq resets",
+    },
+    // Page 2: Display Guide
+    {
+        "Bars = RSSI strength",
+        "Dashed line=threshold",
+        "Spike = transmission",
+        "C=count /m=per min",
+        "~SCM=brief INT?=noise",
+    },
+    // Page 3: Controls
+    {
+        "OK       pause/resume",
+        "OK hold  reset stats",
+        "UP/DOWN  threshold",
+        "Hold U/D rate change",
+        "L/R      frequency",
+    },
+};
+
+// ============================================================
+// Draw callback
+// ============================================================
+static void sm_instructions_draw_cb(Canvas* canvas, void* model) {
+    SmInstrModel* m = (SmInstrModel*)model;
+    if(m == NULL) return;
+
+    uint8_t page = m->page;
+    if(page >= SM_INSTR_PAGES) page = 0U;
+
+    canvas_clear(canvas);
+
+    // ----------------------------------------------------------
+    // Title bar with page indicator right-aligned (same baseline).
+    // ----------------------------------------------------------
+    canvas_set_font(canvas, FontSecondary);
+    canvas_draw_str(canvas, 1, 7, k_page_titles[page]);
+
+    char indicator[8];
+    snprintf(indicator, sizeof(indicator), "%d/%d", (int)(page + 1U), (int)SM_INSTR_PAGES);
+    size_t iw = canvas_string_width(canvas, indicator);
+    canvas_draw_str(canvas, (int32_t)(127U - iw), 7, indicator);
+
+    canvas_draw_line(canvas, 0, 9, 127, 9);
+
+    // ----------------------------------------------------------
+    // Body text: 5 lines, 10px spacing (8px glyph + 2px gap).
+    // Lines at baselines y=19,29,39,49,59.
+    // ----------------------------------------------------------
+    canvas_set_font(canvas, FontKeyboard);
+    int32_t y = 19;
+    for(uint8_t i = 0U; i < SM_INSTR_BODY_LINES; i++) {
+        if(k_page_body[page][i] != NULL && k_page_body[page][i][0] != '\0') {
+            canvas_draw_str(canvas, 1, y, k_page_body[page][i]);
+        }
+        y += 10;
+    }
+}
+
+// ============================================================
+// Input callback
+// ============================================================
+static bool sm_instructions_input_cb(InputEvent* event, void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    if(event->type == InputTypeShort) {
+        switch(event->key) {
+        case InputKeyLeft:
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventInstrPageLeft);
+            return true;
+        case InputKeyRight:
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventInstrPageRight);
+            return true;
+        default:
+            break;
+        }
+    }
+    return false;
+}
+
+// ============================================================
+// View setup
+// ============================================================
+void scene_instructions_setup_view(SmartMeterApp* app) {
+    furi_check(app != NULL);
+
+    app->view_instructions = view_alloc();
+    furi_check(app->view_instructions != NULL);
+
+    view_set_draw_callback(app->view_instructions, sm_instructions_draw_cb);
+    view_set_input_callback(app->view_instructions, sm_instructions_input_cb);
+    view_set_context(app->view_instructions, app);
+
+    view_allocate_model(
+        app->view_instructions, ViewModelTypeLockFree, sizeof(SmInstrModel));
+
+    SmInstrModel* m = view_get_model(app->view_instructions);
+    if(m != NULL) m->page = 0U;
+    view_commit_model(app->view_instructions, false);
+}
+
+// ============================================================
+// Scene handlers
+// ============================================================
+void scene_instructions_on_enter(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    SmInstrModel* m = view_get_model(app->view_instructions);
+    if(m != NULL) m->page = 0U;
+    view_commit_model(app->view_instructions, false);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, SmViewInstructions);
+}
+
+bool scene_instructions_on_event(void* context, SceneManagerEvent event) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    if(event.type != SceneManagerEventTypeCustom) return false;
+
+    SmInstrModel* m = view_get_model(app->view_instructions);
+    if(m == NULL) return false;
+
+    switch(event.event) {
+    case SmEventInstrPageLeft:
+        if(m->page > 0U) m->page--;
+        view_commit_model(app->view_instructions, true);
+        return true;
+    case SmEventInstrPageRight:
+        if(m->page < SM_INSTR_PAGES - 1U) m->page++;
+        view_commit_model(app->view_instructions, true);
+        return true;
+    default:
+        break;
+    }
+    return false;
+}
+
+void scene_instructions_on_exit(void* context) {
+    UNUSED(context);
+}

Applications/UberGuidoZ/smart_meter_monitor/Source/scene_menu.c

@@ -0,0 +1,61 @@
+// ####################################################
+// #  scene_menu.c - main menu scene                  #
+// #  By: UberGuidoZ | https://github.com/UberGuidoZ/ #
+// #  v1.11                                           #
+// ####################################################
+
+#include "smart_meter.h"
+
+static void sm_menu_cb(void* context, uint32_t index) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void scene_menu_on_enter(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    submenu_reset(app->submenu_menu);
+    submenu_set_header(app->submenu_menu, "Smart Meter Monitor");
+
+    submenu_add_item(app->submenu_menu, "Start Monitor",  SmEventMenuStart, sm_menu_cb, app);
+    submenu_add_item(app->submenu_menu, "Instructions",   SmEventMenuInstr, sm_menu_cb, app);
+    submenu_add_item(app->submenu_menu, "About",          SmEventMenuAbout, sm_menu_cb, app);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, SmViewMenu);
+}
+
+bool scene_menu_on_event(void* context, SceneManagerEvent event) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    // BACK on the root menu exits the app entirely.
+    if(event.type == SceneManagerEventTypeBack) {
+        view_dispatcher_stop(app->view_dispatcher);
+        return true;
+    }
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SmEventMenuStart:
+            scene_manager_next_scene(app->scene_manager, SmSceneMonitor);
+            return true;
+        case SmEventMenuInstr:
+            scene_manager_next_scene(app->scene_manager, SmSceneInstructions);
+            return true;
+        case SmEventMenuAbout:
+            scene_manager_next_scene(app->scene_manager, SmSceneAbout);
+            return true;
+        default:
+            break;
+        }
+    }
+    return false;
+}
+
+void scene_menu_on_exit(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    submenu_reset(app->submenu_menu);
+}

Applications/UberGuidoZ/smart_meter_monitor/Source/scene_monitor.c

@@ -0,0 +1,488 @@
+// ############################################################
+// #  scene_monitor.c - CC1101 capture, waveform, burst stats #
+// #  By: UberGuidoZ | https://github.com/UberGuidoZ/         #
+// #  v1.11                                                   #
+// ############################################################
+//
+//  The CC1101 is polled by a FuriTimer at the selected sample
+//  rate. RSSI values fill a 128-sample circular buffer that maps
+//  1:1 to the 128px-wide waveform (newest = rightmost pixel).
+//  A dashed threshold line across the waveform marks the burst
+//  detection level, adjustable in 5 dBm steps with UP/DOWN.
+//
+//  CONTROLS:
+//    OK (short)   - reset stats (count, intervals)
+//    OK (long)    - pause / resume capture
+//    UP           - raise detection threshold (less sensitive)
+//    DOWN         - lower detection threshold (more sensitive)
+//    LEFT         - cycle to previous frequency
+//    RIGHT        - cycle to next frequency
+//    BACK         - stop radio, return to menu
+//
+// ##############################################################
+
+#include "smart_meter.h"
+#include <string.h>
+#include <stdio.h>
+
+// ============================================================
+// Frequency and sample rate tables
+// ============================================================
+static const uint32_t k_frequencies[SM_FREQ_COUNT] = {
+    433920000U,   // 433.92 MHz - some water meters
+    868300000U,   // 868.30 MHz - EU electric / gas
+    915000000U,   // 915.00 MHz - US electric / gas (ERT/SCM)
+};
+
+static const char* const k_freq_labels[SM_FREQ_COUNT] = {
+    "433MHz",
+    "868MHz",
+    "915MHz",
+};
+
+static const uint32_t k_sample_rates[SM_RATE_COUNT] = {
+    100U,    //  100 ms - 13s  history
+    250U,    //  250 ms - 32s  history
+    500U,    //  500 ms - 64s  history (default)
+    1000U,   // 1000 ms - 128s history
+    2000U,   // 2000 ms - 256s history
+};
+
+static const char* const k_rate_labels[SM_RATE_COUNT] = {
+    "100ms",
+    "250ms",
+    "500ms",
+    "1s",
+    "2s",
+};
+
+// ============================================================
+// Radio helpers
+// ============================================================
+
+static void sm_radio_start(SmartMeterApp* app) {
+    furi_check(app != NULL);
+    if(app->radio_running) return;
+
+    furi_hal_subghz_reset();
+    furi_hal_subghz_set_frequency_and_path(k_frequencies[app->freq_index]);
+    furi_hal_subghz_rx();
+    app->radio_running = true;
+}
+
+static void sm_radio_stop(SmartMeterApp* app) {
+    furi_check(app != NULL);
+    if(!app->radio_running) return;
+
+    furi_hal_subghz_idle();
+    furi_hal_subghz_sleep();
+    app->radio_running = false;
+}
+
+// Restart radio on frequency change without clearing stats.
+static void sm_radio_restart(SmartMeterApp* app) {
+    sm_radio_stop(app);
+    sm_radio_start(app);
+}
+
+// ============================================================
+// Stats reset (does not touch the RSSI history or radio)
+// ============================================================
+static void sm_reset_stats(SmartMeterApp* app) {
+    furi_check(app != NULL);
+    furi_mutex_acquire(app->mutex, FuriWaitForever);
+    app->burst_count          = 0U;
+    app->last_burst_tick      = 0U;
+    app->last_interval_ms     = 0U;
+    app->avg_interval_ms      = 0U;
+    app->burst_ts_head        = 0U;
+    app->burst_ts_count       = 0U;
+    app->tx_per_min           = 0U;
+    app->burst_enter_tick     = 0U;
+    app->burst_sample_count   = 0U;
+    app->last_burst_samples   = 0U;
+    app->in_burst             = false;
+    app->burst_above          = 0U;
+    app->burst_below          = 0U;
+    // Clear the RSSI history so the waveform starts fresh.
+    memset(app->rssi_history, (uint8_t)SM_RSSI_MIN_DBM, sizeof(app->rssi_history));
+    app->rssi_head  = 0U;
+    app->rssi_count = 0U;
+    furi_mutex_release(app->mutex);
+}
+
+// ============================================================
+// Timer callback (FreeRTOS timer service task)
+// ============================================================
+static void sm_sample_timer_cb(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    if(furi_mutex_acquire(app->mutex, 0U) != FuriStatusOk) return;
+
+    if(app->radio_running && app->monitoring) {
+        // Read RSSI from CC1101.
+        float rssi_f = furi_hal_subghz_get_rssi();
+        int8_t rssi;
+        if(rssi_f      <= (float)SM_RSSI_MIN_DBM) rssi = (int8_t)SM_RSSI_MIN_DBM;
+        else if(rssi_f >= (float)SM_RSSI_MAX_DBM) rssi = (int8_t)SM_RSSI_MAX_DBM;
+        else                                       rssi = (int8_t)rssi_f;
+
+        app->rssi_current = rssi;
+
+        // Write into circular buffer.
+        app->rssi_history[app->rssi_head] = rssi;
+        app->rssi_head = (app->rssi_head + 1U) % SM_HISTORY_SIZE;
+        if(app->rssi_count < SM_HISTORY_SIZE) app->rssi_count++;
+
+        // Burst detection with hysteresis.
+        bool above = (rssi > app->threshold_dbm);
+
+        if(!app->in_burst) {
+            // Not currently in a burst - look for entry condition.
+            if(above) {
+                app->burst_above++;
+                if(app->burst_above >= SM_BURST_ENTER_SAMPLES) {
+                    app->in_burst           = true;
+                    app->burst_below        = 0U;
+                    app->burst_sample_count = app->burst_above;
+                    app->burst_enter_tick   = furi_get_tick();
+                }
+            } else {
+                app->burst_above = 0U;
+            }
+        } else {
+            // In a burst - count samples and look for exit condition.
+            if(above) {
+                app->burst_sample_count++;
+                app->burst_below = 0U;
+            } else {
+                app->burst_below++;
+                if(app->burst_below >= SM_BURST_EXIT_SAMPLES) {
+                    // Burst ended - record all stats.
+                    app->in_burst             = false;
+                    app->burst_above          = 0U;
+                    app->last_burst_samples   = app->burst_sample_count;
+                    app->burst_sample_count   = 0U;
+
+                    uint32_t now = furi_get_tick();
+
+                    // Interval tracking.
+                    if(app->burst_count > 0U && app->last_burst_tick > 0U) {
+                        app->last_interval_ms = now - app->last_burst_tick;
+                        if(app->avg_interval_ms == 0U) {
+                            app->avg_interval_ms = app->last_interval_ms;
+                        } else {
+                            app->avg_interval_ms =
+                                (app->avg_interval_ms * 3U + app->last_interval_ms) / 4U;
+                        }
+                    }
+                    app->last_burst_tick = now;
+                    app->burst_count++;
+
+                    // Tx/min: store timestamp in circular buffer.
+                    app->burst_timestamps[app->burst_ts_head] = now;
+                    app->burst_ts_head =
+                        (uint8_t)((app->burst_ts_head + 1U) % 30U);
+                    if(app->burst_ts_count < 30U) app->burst_ts_count++;
+
+                    // Count entries within the last 60 seconds.
+                    uint8_t tpm = 0U;
+                    for(uint8_t t = 0U; t < app->burst_ts_count; t++) {
+                        if((now - app->burst_timestamps[t]) <= 60000U) tpm++;
+                    }
+                    app->tx_per_min = tpm;
+
+                    notification_message(app->notifications, &sequence_blink_green_10);
+                }
+            }
+        }
+    }
+
+    furi_mutex_release(app->mutex);
+    view_commit_model(app->view_monitor, true);
+}
+
+// ============================================================
+// Draw callback (GUI thread)
+// ============================================================
+static void sm_monitor_draw_cb(Canvas* canvas, void* model) {
+    SmMonitorModel* m = (SmMonitorModel*)model;
+    if(m == NULL || m->app == NULL) return;
+    SmartMeterApp* app = m->app;
+
+    // Always clear so stale pixels never persist on mutex timeout.
+    canvas_clear(canvas);
+
+    if(furi_mutex_acquire(app->mutex, 25U) != FuriStatusOk) return;
+
+    // ----------------------------------------------------------
+    // Header bar
+    // ----------------------------------------------------------
+    canvas_set_font(canvas, FontSecondary);
+    canvas_draw_str(canvas, 1, 7, "SMM");
+
+    // Right side: frequency, rate, and paused indicator.
+    char hdr[24];
+    snprintf(hdr, sizeof(hdr), "%s %s%s",
+        k_freq_labels[app->freq_index],
+        k_rate_labels[app->rate_index],
+        app->monitoring ? "" : " II");
+    size_t hw = canvas_string_width(canvas, hdr);
+    canvas_draw_str(canvas, (int32_t)(SM_SCREEN_W - 1U - hw), 7, hdr);
+
+    // Separator
+    canvas_draw_line(canvas, 0, (int32_t)(SM_HEADER_H - 1U),
+                     (int32_t)(SM_SCREEN_W - 1U), (int32_t)(SM_HEADER_H - 1U));
+
+    // ----------------------------------------------------------
+    // RSSI waveform (bar graph, newest = rightmost column)
+    // ----------------------------------------------------------
+    uint32_t count      = app->rssi_count;
+    uint32_t head       = app->rssi_head;
+    uint32_t show       = count < SM_WAVE_W ? count : SM_WAVE_W;
+    uint32_t oldest_idx = count < SM_HISTORY_SIZE ? 0U : head;
+
+    for(uint32_t s = 0U; s < show; s++) {
+        uint32_t x          = SM_WAVE_W - show + s;
+        uint32_t sample_idx = (oldest_idx + s) % SM_HISTORY_SIZE;
+        int8_t   rssi       = app->rssi_history[sample_idx];
+
+        int32_t h = ((int32_t)rssi - SM_RSSI_MIN_DBM) * (int32_t)SM_WAVE_H / SM_RSSI_RANGE;
+        if(h < 0)              h = 0;
+        if(h > (int32_t)SM_WAVE_H) h = (int32_t)SM_WAVE_H;
+
+        if(h > 0) {
+            canvas_draw_line(
+                canvas,
+                (int32_t)x, (int32_t)SM_WAVE_Y_BOT,
+                (int32_t)x, (int32_t)SM_WAVE_Y_BOT - h + 1);
+        }
+    }
+
+    // ----------------------------------------------------------
+    // Threshold line (2-on, 2-off dashed across full width)
+    // ----------------------------------------------------------
+    int32_t thr_h = ((int32_t)app->threshold_dbm - SM_RSSI_MIN_DBM) *
+                    (int32_t)SM_WAVE_H / SM_RSSI_RANGE;
+    if(thr_h < 0)               thr_h = 0;
+    if(thr_h > (int32_t)SM_WAVE_H) thr_h = (int32_t)SM_WAVE_H;
+    int32_t thr_y = (int32_t)SM_WAVE_Y_BOT - thr_h;
+    for(int32_t x = 0; x < (int32_t)SM_SCREEN_W; x += 4) {
+        canvas_draw_dot(canvas, x,     thr_y);
+        canvas_draw_dot(canvas, x + 1, thr_y);
+    }
+
+    // ----------------------------------------------------------
+    // Stats line 1: RSSI, burst count, tx/min
+    // ----------------------------------------------------------
+    canvas_set_font(canvas, FontKeyboard);
+    char s1[20];
+    snprintf(s1, sizeof(s1), "%4ddBm C:%03lu %2u/m",
+        (int)app->rssi_current,
+        (unsigned long)app->burst_count,
+        (unsigned)app->tx_per_min);
+    canvas_draw_str(canvas, 0, (int32_t)SM_STATS1_Y, s1);
+
+    // ----------------------------------------------------------
+    // Stats line 2: intervals + SCM framing hint
+    //
+    // SCM heuristic: brief above-threshold events (1-2 samples)
+    // are consistent with short meter packets. Sustained events
+    // (4+ samples at any poll rate) suggest interference.
+    // This is energy-based estimation only, not actual decoding.
+    // ----------------------------------------------------------
+    char s2[28];
+    if(app->burst_count < 2U) {
+        snprintf(s2, sizeof(s2), "Thr:%3ddBm", (int)app->threshold_dbm);
+    } else {
+        uint32_t lst_s = app->last_interval_ms / 1000U;
+        uint32_t avg_s = app->avg_interval_ms  / 1000U;
+        if(lst_s > 999U) lst_s = 999U;
+        if(avg_s > 999U) avg_s = 999U;
+
+        const char* hint = "";
+        if(app->last_burst_samples <= 2U) {
+            hint = " ~SCM";   // brief: consistent with meter packet
+        } else if(app->last_burst_samples >= 4U) {
+            hint = " INT?";   // sustained: likely interference
+        }
+
+        snprintf(s2, sizeof(s2), "I:%3lus A:%3lus%s",
+            (unsigned long)lst_s,
+            (unsigned long)avg_s,
+            hint);
+    }
+    canvas_draw_str(canvas, 0, (int32_t)SM_STATS2_Y, s2);
+
+    furi_mutex_release(app->mutex);
+}
+
+// ============================================================
+// Input callback (GUI thread)
+// ============================================================
+static bool sm_monitor_input_cb(InputEvent* event, void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    if(event->type == InputTypeShort) {
+        switch(event->key) {
+        case InputKeyOk:
+            // Skip toggle if a long press was just consumed for reset.
+            if(app->ok_long_consumed) {
+                app->ok_long_consumed = false;
+                return true;
+            }
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventMonitorToggle);
+            return true;
+        case InputKeyUp:
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventMonitorThreshUp);
+            return true;
+        case InputKeyDown:
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventMonitorThreshDown);
+            return true;
+        case InputKeyLeft:
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventMonitorFreqPrev);
+            return true;
+        case InputKeyRight:
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventMonitorFreqNext);
+            return true;
+        default:
+            break;
+        }
+    } else if(event->type == InputTypeLong) {
+        switch(event->key) {
+        case InputKeyOk:
+            app->ok_long_consumed = true;
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventMonitorReset);
+            return true;
+        case InputKeyUp:
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventMonitorRateUp);
+            return true;
+        case InputKeyDown:
+            view_dispatcher_send_custom_event(
+                app->view_dispatcher, SmEventMonitorRateDown);
+            return true;
+        default:
+            break;
+        }
+    }
+
+    return false;
+}
+
+// ============================================================
+// View setup (called once from sm_alloc)
+// ============================================================
+void scene_monitor_setup_view(SmartMeterApp* app) {
+    furi_check(app != NULL);
+
+    app->view_monitor = view_alloc();
+    furi_check(app->view_monitor != NULL);
+
+    view_set_draw_callback(app->view_monitor, sm_monitor_draw_cb);
+    view_set_input_callback(app->view_monitor, sm_monitor_input_cb);
+    view_set_context(app->view_monitor, app);
+
+    view_allocate_model(
+        app->view_monitor, ViewModelTypeLockFree, sizeof(SmMonitorModel));
+
+    SmMonitorModel* m = view_get_model(app->view_monitor);
+    if(m != NULL) m->app = app;
+    view_commit_model(app->view_monitor, false);
+
+    // Allocate the sample timer here so the callback symbol stays local.
+    app->sample_timer = furi_timer_alloc(sm_sample_timer_cb, FuriTimerTypePeriodic, app);
+    furi_check(app->sample_timer != NULL);
+}
+
+// ============================================================
+// Scene handlers
+// ============================================================
+void scene_monitor_on_enter(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    sm_reset_stats(app);
+    sm_radio_start(app);
+    furi_timer_start(app->sample_timer, k_sample_rates[app->rate_index]);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, SmViewMonitor);
+}
+
+bool scene_monitor_on_event(void* context, SceneManagerEvent event) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    if(event.type != SceneManagerEventTypeCustom) return false;
+
+    switch(event.event) {
+
+    case SmEventMonitorToggle:
+        app->monitoring = !app->monitoring;
+        return true;
+
+    case SmEventMonitorReset:
+        sm_reset_stats(app);
+        return true;
+
+    case SmEventMonitorThreshUp:
+        if(app->threshold_dbm < (int8_t)SM_THRESHOLD_MAX) {
+            app->threshold_dbm += (int8_t)SM_THRESHOLD_STEP;
+        }
+        return true;
+
+    case SmEventMonitorThreshDown:
+        if(app->threshold_dbm > (int8_t)SM_THRESHOLD_MIN) {
+            app->threshold_dbm -= (int8_t)SM_THRESHOLD_STEP;
+        }
+        return true;
+
+    case SmEventMonitorFreqNext:
+        app->freq_index = (uint8_t)((app->freq_index + 1U) % SM_FREQ_COUNT);
+        sm_radio_restart(app);
+        sm_reset_stats(app);
+        return true;
+
+    case SmEventMonitorFreqPrev:
+        app->freq_index = (uint8_t)(
+            app->freq_index > 0U ? app->freq_index - 1U : SM_FREQ_COUNT - 1U);
+        sm_radio_restart(app);
+        sm_reset_stats(app);
+        return true;
+
+    case SmEventMonitorRateUp:
+        if(app->rate_index < SM_RATE_COUNT - 1U) {
+            app->rate_index++;
+            furi_timer_stop(app->sample_timer);
+            furi_timer_start(app->sample_timer, k_sample_rates[app->rate_index]);
+        }
+        return true;
+
+    case SmEventMonitorRateDown:
+        if(app->rate_index > 0U) {
+            app->rate_index--;
+            furi_timer_stop(app->sample_timer);
+            furi_timer_start(app->sample_timer, k_sample_rates[app->rate_index]);
+        }
+        return true;
+
+    default:
+        break;
+    }
+    return false;
+}
+
+void scene_monitor_on_exit(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    furi_timer_stop(app->sample_timer);
+    sm_radio_stop(app);
+}

Applications/UberGuidoZ/smart_meter_monitor/Source/scene_splash.c

@@ -0,0 +1,114 @@
+// ####################################################
+// #  scene_splash.c - title / splash screen          #
+// #  By: UberGuidoZ | https://github.com/UberGuidoZ/ #
+// #  v1.11                                           #
+// ####################################################
+
+#include "smart_meter.h"
+
+// ============================================================
+// Splash timer callback
+// ============================================================
+static void sm_splash_timer_cb(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    view_dispatcher_send_custom_event(app->view_dispatcher, SM_SPLASH_TIMER_DONE);
+}
+
+// ============================================================
+// Draw callback
+// ============================================================
+static void sm_splash_draw_cb(Canvas* canvas, void* model) {
+    UNUSED(model);
+    canvas_clear(canvas);
+
+    // ----------------------------------------------------------
+    // Box around title block only. Measured at runtime for exact
+    // centering regardless of font metrics.
+    // ----------------------------------------------------------
+    canvas_set_font(canvas, FontPrimary);
+    size_t w1 = canvas_string_width(canvas, "Smart Meter");
+    size_t w2 = canvas_string_width(canvas, "Monitor");
+    size_t box_w = (w1 > w2 ? w1 : w2) + 16U;
+    int32_t box_x = (int32_t)((128U - box_w) / 2U);
+    if(box_x < 1) box_x = 1;
+    canvas_draw_frame(canvas, box_x, 8, (uint8_t)box_w, 32);
+    canvas_draw_str(canvas, (int32_t)((128U - w1) / 2U), 22, "Smart Meter");
+    canvas_draw_str(canvas, (int32_t)((128U - w2) / 2U), 34, "Monitor");
+
+    // ----------------------------------------------------------
+    // Separator and byline (FontKeyboard ~6px/char).
+    // "v1.11 by UberGuidoZ" = 19 chars * 6 = 114px, x=(128-114)/2 = 7
+    // "github.com/UberGuidoZ" = 21 chars * 6 = 126px, x=1
+    // ----------------------------------------------------------
+    canvas_draw_line(canvas, 10, 44, 118, 44);
+    canvas_set_font(canvas, FontKeyboard);
+    canvas_draw_str(canvas,  7, 54, "v1.11 by UberGuidoZ");
+    canvas_draw_str(canvas,  1, 62, "github.com/UberGuidoZ");
+}
+
+// ============================================================
+// Input callback - any key skips the splash
+// ============================================================
+static bool sm_splash_input_cb(InputEvent* event, void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    if(event->type == InputTypeShort || event->type == InputTypeLong) {
+        view_dispatcher_send_custom_event(app->view_dispatcher, SM_SPLASH_TIMER_DONE);
+        return true;
+    }
+    return false;
+}
+
+// ============================================================
+// View setup
+// ============================================================
+void scene_splash_setup_view(SmartMeterApp* app) {
+    furi_check(app != NULL);
+    app->view_splash = view_alloc();
+    furi_check(app->view_splash != NULL);
+    view_set_draw_callback(app->view_splash, sm_splash_draw_cb);
+    view_set_input_callback(app->view_splash, sm_splash_input_cb);
+    view_set_context(app->view_splash, app);
+}
+
+// ============================================================
+// Scene handlers
+// ============================================================
+void scene_splash_on_enter(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    app->splash_timer = furi_timer_alloc(sm_splash_timer_cb, FuriTimerTypeOnce, app);
+    furi_check(app->splash_timer != NULL);
+    furi_timer_start(app->splash_timer, SM_SPLASH_DELAY_MS);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, SmViewSplash);
+}
+
+bool scene_splash_on_event(void* context, SceneManagerEvent event) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+
+    if(event.type == SceneManagerEventTypeCustom &&
+       event.event == SM_SPLASH_TIMER_DONE) {
+        if(app->splash_timer != NULL) {
+            furi_timer_stop(app->splash_timer);
+            furi_timer_free(app->splash_timer);
+            app->splash_timer = NULL;
+        }
+        scene_manager_next_scene(app->scene_manager, SmSceneMenu);
+        return true;
+    }
+    return false;
+}
+
+void scene_splash_on_exit(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    if(app->splash_timer != NULL) {
+        furi_timer_stop(app->splash_timer);
+        furi_timer_free(app->splash_timer);
+        app->splash_timer = NULL;
+    }
+}

Applications/UberGuidoZ/smart_meter_monitor/Source/smart_meter.h

@@ -0,0 +1,251 @@
+#pragma once
+
+// #########################################################
+// #  smart_meter.h - Smart Meter Monitor for Flipper Zero #
+// #  By: UberGuidoZ | https://github.com/UberGuidoZ/      #
+// #  v1.11                                                #
+// #########################################################
+
+#include <furi.h>
+#include <furi_hal.h>
+#include <furi_hal_subghz.h>
+#include <datetime/datetime.h>
+#include <gui/gui.h>
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <gui/modules/submenu.h>
+#include <input/input.h>
+#include <notification/notification_messages.h>
+
+// ------------------------------------------------------------
+// Screen geometry (actual OLED pixels)
+// ------------------------------------------------------------
+#define SM_SCREEN_W       128U
+#define SM_SCREEN_H        64U
+#define SM_HEADER_H         9U   // 8px text row + 1px separator
+
+// Waveform area
+#define SM_WAVE_W         128U   // full screen width = sample history
+#define SM_WAVE_H          28U   // 28px tall
+#define SM_WAVE_Y_TOP      10U   // top pixel of waveform
+#define SM_WAVE_Y_BOT      37U   // bottom pixel (SM_WAVE_Y_TOP + SM_WAVE_H - 1)
+
+// Stats rows (FontKeyboard, 8px tall, 2px gap above each)
+#define SM_STATS1_Y        48U   // baseline; glyph occupies y=40..48
+#define SM_STATS2_Y        59U   // baseline; glyph occupies y=51..59
+
+// RSSI scaling
+#define SM_RSSI_MIN_DBM  (-120)  // mapped to 0px waveform height
+#define SM_RSSI_MAX_DBM  (-40)   // mapped to SM_WAVE_H px height
+#define SM_RSSI_RANGE      80    // SM_RSSI_MAX_DBM - SM_RSSI_MIN_DBM
+
+// History buffer = waveform width (1 sample per pixel column)
+#define SM_HISTORY_SIZE   SM_WAVE_W
+
+// ------------------------------------------------------------
+// Threshold
+// ------------------------------------------------------------
+#define SM_THRESHOLD_DEFAULT  (-90)
+#define SM_THRESHOLD_MIN      (-110)
+#define SM_THRESHOLD_MAX      (-60)
+#define SM_THRESHOLD_STEP       5
+
+// ------------------------------------------------------------
+// Burst detection hysteresis
+// ------------------------------------------------------------
+#define SM_BURST_ENTER_SAMPLES  2U  // consecutive above-threshold to enter burst
+#define SM_BURST_EXIT_SAMPLES   3U  // consecutive below-threshold to exit burst
+
+// ------------------------------------------------------------
+// Sample rates
+// ------------------------------------------------------------
+#define SM_RATE_COUNT     5U
+#define SM_DEFAULT_RATE   2U   // 500 ms
+
+// ------------------------------------------------------------
+// Frequencies
+// ------------------------------------------------------------
+#define SM_FREQ_COUNT     3U
+#define SM_DEFAULT_FREQ   2U   // 915 MHz (most common in US)
+
+// ------------------------------------------------------------
+// Splash
+// ------------------------------------------------------------
+#define SM_SPLASH_DELAY_MS   3000U
+#define SM_SPLASH_TIMER_DONE    0U
+
+// ------------------------------------------------------------
+// Instructions
+// ------------------------------------------------------------
+#define SM_INSTR_PAGES        4U
+#define SM_INSTR_BODY_LINES   5U
+
+// ------------------------------------------------------------
+// Scene IDs
+// Order must match sm_on_enter/event/exit arrays in smart_meter_app.c.
+// ------------------------------------------------------------
+typedef enum {
+    SmSceneSplash = 0,
+    SmSceneMenu,
+    SmSceneFreq,
+    SmSceneMonitor,
+    SmSceneInstructions,
+    SmSceneAbout,
+    SmSceneCount,
+} SmSceneId;
+
+// ------------------------------------------------------------
+// View IDs
+// ------------------------------------------------------------
+typedef enum {
+    SmViewSplash = 0,
+    SmViewMenu,
+    SmViewFreq,
+    SmViewMonitor,
+    SmViewInstructions,
+    SmViewAbout,
+    SmViewCount,
+} SmViewId;
+
+// ------------------------------------------------------------
+// Custom events
+// ------------------------------------------------------------
+typedef enum {
+    SmEventMenuStart = 0,
+    SmEventMenuFreq,
+    SmEventMenuInstr,
+    SmEventMenuAbout,
+} SmMenuEvent;
+
+typedef enum {
+    SmEventMonitorToggle = 0,
+    SmEventMonitorReset,
+    SmEventMonitorRateUp,
+    SmEventMonitorRateDown,
+    SmEventMonitorFreqNext,
+    SmEventMonitorFreqPrev,
+    SmEventMonitorThreshUp,
+    SmEventMonitorThreshDown,
+} SmMonitorEvent;
+
+typedef enum {
+    SmEventInstrPageLeft = 0,
+    SmEventInstrPageRight,
+} SmInstrEvent;
+
+// ------------------------------------------------------------
+// Forward declaration - allows model structs below to hold
+// a SmartMeterApp* before the full struct is defined.
+// ------------------------------------------------------------
+typedef struct SmartMeterApp_s SmartMeterApp;
+
+// ------------------------------------------------------------
+// View models
+// ------------------------------------------------------------
+
+// Monitor view: draw callback reads app state through this pointer.
+typedef struct {
+    SmartMeterApp* app;
+} SmMonitorModel;
+
+// Instructions view: tracks which page is displayed.
+typedef struct {
+    uint8_t page;
+} SmInstrModel;
+
+// ------------------------------------------------------------
+// Full application state struct
+// ------------------------------------------------------------
+struct SmartMeterApp_s {
+    // Scene / view management
+    SceneManager*    scene_manager;
+    ViewDispatcher*  view_dispatcher;
+    Submenu*         submenu_menu;
+    Submenu*         submenu_freq;
+    View*            view_splash;
+    View*            view_monitor;
+    View*            view_instructions;
+    View*            view_about;
+
+    // Timers and sync
+    FuriTimer*       sample_timer;
+    FuriTimer*       splash_timer;
+    FuriMutex*       mutex;
+
+    // Radio state
+    bool             radio_running;
+    bool             monitoring;   // capture on / off
+    bool             ok_long_consumed; // prevents long-press release from also triggering short
+    uint8_t          freq_index;   // index into k_frequencies[]
+    uint8_t          rate_index;   // index into k_sample_rates[]
+
+    // RSSI circular buffer
+    int8_t           rssi_history[SM_HISTORY_SIZE];
+    uint32_t         rssi_head;    // next write position
+    uint32_t         rssi_count;   // samples stored (capped at SM_HISTORY_SIZE)
+    int8_t           rssi_current; // most recent RSSI value
+
+    // Threshold (dBm, adjusted by UP/DOWN)
+    int8_t           threshold_dbm;
+
+    // Burst detection
+    bool             in_burst;
+    uint8_t          burst_above;  // consecutive above-threshold samples
+    uint8_t          burst_below;  // consecutive below-threshold samples
+
+    // Transmission stats
+    uint32_t         burst_count;              // total detected transmissions
+    uint32_t         last_burst_tick;          // furi_get_tick() of last burst exit
+    uint32_t         last_interval_ms;         // interval between last two bursts
+    uint32_t         avg_interval_ms;          // running average interval
+
+    // Tx/minute - rolling 60s window of burst exit timestamps
+    uint32_t         burst_timestamps[30U];    // circular buffer of burst ticks
+    uint8_t          burst_ts_head;            // next write index
+    uint8_t          burst_ts_count;           // entries stored (capped at 30)
+    uint8_t          tx_per_min;              // transmissions in last 60s
+
+    // Burst duration / SCM framing hint
+    uint32_t         burst_enter_tick;         // tick when burst was entered
+    uint8_t          burst_sample_count;       // above-threshold samples in current burst
+    uint8_t          last_burst_samples;       // sample count of last completed burst
+
+    // Notifications
+    NotificationApp* notifications;
+};
+
+// ------------------------------------------------------------
+// Scene handler declarations
+// ------------------------------------------------------------
+void scene_splash_on_enter(void* context);
+bool scene_splash_on_event(void* context, SceneManagerEvent event);
+void scene_splash_on_exit(void* context);
+
+void scene_menu_on_enter(void* context);
+bool scene_menu_on_event(void* context, SceneManagerEvent event);
+void scene_menu_on_exit(void* context);
+
+void scene_freq_on_enter(void* context);
+bool scene_freq_on_event(void* context, SceneManagerEvent event);
+void scene_freq_on_exit(void* context);
+
+void scene_monitor_on_enter(void* context);
+bool scene_monitor_on_event(void* context, SceneManagerEvent event);
+void scene_monitor_on_exit(void* context);
+
+void scene_instructions_on_enter(void* context);
+bool scene_instructions_on_event(void* context, SceneManagerEvent event);
+void scene_instructions_on_exit(void* context);
+
+void scene_about_on_enter(void* context);
+bool scene_about_on_event(void* context, SceneManagerEvent event);
+void scene_about_on_exit(void* context);
+
+// ------------------------------------------------------------
+// View setup functions (called once from sm_alloc)
+// ------------------------------------------------------------
+void scene_splash_setup_view(SmartMeterApp* app);
+void scene_monitor_setup_view(SmartMeterApp* app);
+void scene_instructions_setup_view(SmartMeterApp* app);
+void scene_about_setup_view(SmartMeterApp* app);

Applications/UberGuidoZ/smart_meter_monitor/Source/smart_meter_app.c

@@ -0,0 +1,189 @@
+// ######################################################
+// #  smart_meter_app.c - entry point and app lifecycle #
+// #  By: UberGuidoZ | https://github.com/UberGuidoZ/   #
+// #  v1.11                                             #
+// ######################################################
+
+#include "smart_meter.h"
+#include <string.h>
+
+// ============================================================
+// Scene handler tables
+// Order must match SmSceneId enum in smart_meter.h.
+// ============================================================
+static void (*const sm_on_enter_handlers[])(void*) = {
+    scene_splash_on_enter,
+    scene_menu_on_enter,
+    scene_freq_on_enter,
+    scene_monitor_on_enter,
+    scene_instructions_on_enter,
+    scene_about_on_enter,
+};
+
+static bool (*const sm_on_event_handlers[])(void*, SceneManagerEvent) = {
+    scene_splash_on_event,
+    scene_menu_on_event,
+    scene_freq_on_event,
+    scene_monitor_on_event,
+    scene_instructions_on_event,
+    scene_about_on_event,
+};
+
+static void (*const sm_on_exit_handlers[])(void*) = {
+    scene_splash_on_exit,
+    scene_menu_on_exit,
+    scene_freq_on_exit,
+    scene_monitor_on_exit,
+    scene_instructions_on_exit,
+    scene_about_on_exit,
+};
+
+static const SceneManagerHandlers sm_scene_manager_handlers = {
+    .on_enter_handlers = sm_on_enter_handlers,
+    .on_event_handlers = sm_on_event_handlers,
+    .on_exit_handlers  = sm_on_exit_handlers,
+    .scene_num         = SmSceneCount,
+};
+
+// ============================================================
+// ViewDispatcher callbacks
+// ============================================================
+
+static bool sm_custom_event_cb(void* context, uint32_t event) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool sm_back_event_cb(void* context) {
+    SmartMeterApp* app = (SmartMeterApp*)context;
+    furi_check(app != NULL);
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+// ============================================================
+// Allocate all app resources
+// ============================================================
+static SmartMeterApp* sm_alloc(void) {
+    SmartMeterApp* app = malloc(sizeof(SmartMeterApp));
+    furi_check(app != NULL);
+    memset(app, 0, sizeof(SmartMeterApp));
+
+    app->freq_index    = SM_DEFAULT_FREQ;
+    app->rate_index    = SM_DEFAULT_RATE;
+    app->threshold_dbm = (int8_t)SM_THRESHOLD_DEFAULT;
+    app->monitoring    = true;
+
+    // ----------------------------------------------------------
+    // Scene manager
+    // ----------------------------------------------------------
+    app->scene_manager = scene_manager_alloc(&sm_scene_manager_handlers, app);
+    furi_check(app->scene_manager != NULL);
+
+    // ----------------------------------------------------------
+    // View dispatcher
+    // ----------------------------------------------------------
+    app->view_dispatcher = view_dispatcher_alloc();
+    furi_check(app->view_dispatcher != NULL);
+
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+    view_dispatcher_set_custom_event_callback(app->view_dispatcher, sm_custom_event_cb);
+    view_dispatcher_set_navigation_event_callback(app->view_dispatcher, sm_back_event_cb);
+
+    Gui* gui = furi_record_open(RECORD_GUI);
+    view_dispatcher_attach_to_gui(app->view_dispatcher, gui, ViewDispatcherTypeFullscreen);
+    furi_record_close(RECORD_GUI);
+
+    // ----------------------------------------------------------
+    // Submenus
+    // ----------------------------------------------------------
+    app->submenu_menu = submenu_alloc();
+    furi_check(app->submenu_menu != NULL);
+    view_dispatcher_add_view(
+        app->view_dispatcher, SmViewMenu, submenu_get_view(app->submenu_menu));
+
+    app->submenu_freq = submenu_alloc();
+    furi_check(app->submenu_freq != NULL);
+    view_dispatcher_add_view(
+        app->view_dispatcher, SmViewFreq, submenu_get_view(app->submenu_freq));
+
+    // ----------------------------------------------------------
+    // Custom views
+    // ----------------------------------------------------------
+    scene_splash_setup_view(app);
+    view_dispatcher_add_view(app->view_dispatcher, SmViewSplash, app->view_splash);
+
+    scene_monitor_setup_view(app);
+    view_dispatcher_add_view(app->view_dispatcher, SmViewMonitor, app->view_monitor);
+
+    scene_instructions_setup_view(app);
+    view_dispatcher_add_view(app->view_dispatcher, SmViewInstructions, app->view_instructions);
+
+    scene_about_setup_view(app);
+    view_dispatcher_add_view(app->view_dispatcher, SmViewAbout, app->view_about);
+
+    // ----------------------------------------------------------
+    // Mutex and notifications
+    // ----------------------------------------------------------
+    app->mutex = furi_mutex_alloc(FuriMutexTypeNormal);
+    furi_check(app->mutex != NULL);
+
+    app->notifications = furi_record_open(RECORD_NOTIFICATION);
+    furi_check(app->notifications != NULL);
+
+    return app;
+}
+
+// ============================================================
+// Free all resources in reverse-allocation order
+// ============================================================
+static void sm_free(SmartMeterApp* app) {
+    furi_check(app != NULL);
+
+    if(app->sample_timer != NULL) {
+        furi_timer_stop(app->sample_timer);
+        furi_timer_free(app->sample_timer);
+        app->sample_timer = NULL;
+    }
+
+    if(app->splash_timer != NULL) {
+        furi_timer_stop(app->splash_timer);
+        furi_timer_free(app->splash_timer);
+        app->splash_timer = NULL;
+    }
+
+    furi_record_close(RECORD_NOTIFICATION);
+    furi_mutex_free(app->mutex);
+
+    view_dispatcher_remove_view(app->view_dispatcher, SmViewAbout);
+    view_dispatcher_remove_view(app->view_dispatcher, SmViewInstructions);
+    view_dispatcher_remove_view(app->view_dispatcher, SmViewMonitor);
+    view_dispatcher_remove_view(app->view_dispatcher, SmViewSplash);
+    view_dispatcher_remove_view(app->view_dispatcher, SmViewFreq);
+    view_dispatcher_remove_view(app->view_dispatcher, SmViewMenu);
+
+    view_free(app->view_about);
+    view_free(app->view_instructions);
+    view_free(app->view_monitor);
+    view_free(app->view_splash);
+    submenu_free(app->submenu_freq);
+    submenu_free(app->submenu_menu);
+
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    free(app);
+}
+
+// ============================================================
+// Application entry point
+// ============================================================
+int32_t smart_meter_app(void* p) {
+    UNUSED(p);
+
+    SmartMeterApp* app = sm_alloc();
+    scene_manager_next_scene(app->scene_manager, SmSceneSplash);
+    view_dispatcher_run(app->view_dispatcher);
+    sm_free(app);
+    return 0;
+}