Adding environment setup and instructions

.vscode/settings.json

@@ -35,7 +35,8 @@
         "semphr.h": "c",
         "lv_spinbox.h": "c",
         "lv_slider.h": "c",
-        "lv_menu.h": "c"
+        "lv_menu.h": "c",
+        "stream_buffer.h": "c"
     },
     "git.ignoreLimitWarning": true
 }

README.md

@@ -0,0 +1,211 @@
+## 🐳 ESP-IDF Dockerized Development Environment (Windows)
+
+This project includes a fully containerized [ESP-IDF](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/index.html) development environment using **Docker** and **Visual Studio Code**.
+
+Follow these instructions to set up, build, and flash the firmware inside a VS Code **Dev Container** on **Windows**.
+
+---
+
+### ✅ Prerequisites
+Ensure the following are installed on your system:
+
+1. [**Docker Desktop for Windows**](https://www.docker.com/products/docker-desktop)
+
+   * Enable **WSL 2 backend** during installation.
+2. [**Visual Studio Code**](https://code.visualstudio.com/)
+3. [**Dev Containers Extension**](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers)
+
+   * In VS Code: `Extensions → Search "Dev Containers" → Install`
+4. [**Espressif IDF Extension** for VS Code](https://marketplace.visualstudio.com/items?itemName=espressif.esp-idf-extension)
+
+   * In VS Code: `Extensions → Search "ESP-IDF" → Install`
+
+> 💡 **Optional (recommended):** Install [WSL 2 with Ubuntu](https://learn.microsoft.com/en-us/windows/wsl/install) for improved Linux compatibility inside Docker.
+
+---
+
+### 🚀 Getting Started
+
+#### 1. Clone this repository
+
+```bash
+git clone https://git.sparksoftdesign.com/firstpass/soundshot.git
+cd soundshot
+```
+---
+You can also clone with TortoiseGit or VS Code directly.
+#### 2. Open in Visual Studio Code
+
+From the project root:
+
+```bash
+code .
+```
+
+> Ensure you're opening the folder that contains `.devcontainer/`.
+
+---
+
+#### 3. Reopen in Dev Container
+
+In VS Code:
+
+* Press `F1` or `Ctrl+Shift+P`
+* Run: **Dev Containers: Reopen in Container**
+
+VS Code will:
+
+* Build the Docker image (based on the provided `Dockerfile`)
+* Set up the ESP-IDF environment
+* Install extensions automatically
+
+---
+
+#### 4. Verify Environment
+
+Once setup is complete:
+
+* A terminal should launch inside the container
+* Run:
+
+  ```bash
+  idf.py --version
+  ```
+
+  to confirm ESP-IDF is active and available.
+
+---
+
+#### 5. Build the Firmware
+
+Inside the container’s terminal:
+
+```bash
+idf.py build
+```
+
+You should see standard ESP-IDF build output and a `.bin` firmware file in the `build/` directory.
+
+---
+
+## 🛠️ ESP32 Programming Setup & Workflow Guide
+
+This project provides a fully portable development and flashing toolchain for ESP32, using Python scripts and configuration-driven workflows.
+
+---
+
+### 📦 1. Environment Setup
+
+> Run once after cloning the repo (Windows only)
+
+```bash
+setup-env.bat
+```
+
+This:
+
+* Creates a `.venv` virtual environment
+* Installs required Python packages (`esptool`, `pyserial`, etc.)
+* Prepares the tooling for flashing and monitoring
+
+---
+
+### ⚙️ 2. Configure `settings.json`
+
+Customize `settings.json` in the project root:
+
+```json
+{
+  "project_name": "soundshot",
+  "chip": "esp32",
+  "port": "COM3",
+  "baud": 460800,
+  "flash_mode": "dio",
+  "flash_freq": "48m",
+  "flash_size": "2MB",
+  "before": "default-reset",
+  "after": "hard-reset"
+}
+```
+
+This controls:
+
+* Flashing chip type and parameters
+* Serial monitor settings
+* Build artifact naming
+
+---
+
+### 🚀 3. Flashing the Firmware
+
+After building your firmware (e.g. via VS Code + Dev Container):
+
+```bash
+build/
+├── bootloader/bootloader.bin
+├── soundshot.bin                ← ← ← (project_name)
+├── partition_table/partition-table.bin
+```
+
+Run the flash tool:
+
+```bash
+flash.bat
+```
+
+This:
+
+* Loads `settings.json`
+* Verifies all required binaries
+* Calls `esptool.py` with all correct arguments and offsets
+
+---
+
+### 🛰 4. Monitoring Serial Output
+
+To view device output:
+
+```bash
+monitor.bat
+```
+
+Features:
+
+* Uses `pyserial`
+* Displays real-time output from the ESP32
+* Preserves color formatting (if enabled in firmware)
+* Cleanly exits with `Ctrl+C` (no "Terminate batch job" prompts)
+
+> Tip: Run `idf.py menuconfig` and enable
+> `Component config → Log output → Enable color log output`
+
+---
+
+### ✅ Workflow Summary
+
+| Action             | Tool                | Command           |
+| ------------------ | ------------------- | ----------------- |
+| Install tooling    | `setup-env.bat`     | `setup-env.bat`   |
+| Flash device       | `flash.py` script   | `flash.bat`       |
+| Monitor logs       | `monitor.py` script | `monitor.bat`     |
+| Configure behavior | `settings.json`     | *(edit manually)* |
+
+
+---
+
+### 🧰 Notes
+
+* The ESP-IDF version is pinned in the Dockerfile (e.g., `espressif/idf:v5.2.1`)
+* The container automatically runs `source $IDF_PATH/export.sh` to prepare the environment.
+* VS Code extensions (`.devcontainer.json`) include:
+
+  * `ms-vscode.cpptools`
+  * `ms-vscode.cmake-tools`
+  * `espressif.esp-idf-extension`
+
+---
+
+### 🛠 Troubleshooting
+
+* If `idf.py` is not found, make sure the container terminal sources `export.sh`
+

flash.bat

@@ -0,0 +1,22 @@
+@echo off
+REM =============================================
+REM Flash ESP32 using Python script + settings.json
+REM =============================================
+
+REM Check for venv
+IF NOT EXIST .venv\Scripts\python.exe (
+    echo [ERROR] Python virtual environment not found at .venv\
+    echo Run setup-env.bat first.
+    pause
+    exit /b 1
+)
+
+REM Activate venv and run flash.py
+call .venv\Scripts\activate.bat
+
+echo [INFO] Flashing firmware using flash.py and settings.json...
+python flash_tool\flash.py
+
+REM Pause to view output
+echo.
+pause

flash_tool/flash.py

@@ -0,0 +1,60 @@
+import json
+import subprocess
+import sys
+from pathlib import Path
+
+def main():
+    root = Path(__file__).resolve().parent.parent
+    config_file = root / "settings.json"
+
+    if not config_file.exists():
+        print(f"[ERROR] settings.json not found at {config_file}")
+        sys.exit(1)
+
+    with open(config_file) as f:
+        cfg = json.load(f)
+
+    project = cfg["project_name"]
+    chip = cfg.get("chip", "esp32")
+    port = cfg.get("port", "COM3")
+    baud = cfg.get("flash_baud", 460800)
+    flash_mode = cfg.get("flash_mode", "dio")
+    flash_freq = cfg.get("flash_freq", "40m")
+    flash_size = cfg.get("flash_size", "4MB")
+    before = cfg.get("before", "default_reset")
+    after = cfg.get("after", "hard_reset")
+
+    # Define binaries and offsets
+    bootloader = root / "build" / "bootloader" / "bootloader.bin"
+    firmware = root / "build" / f"{project}.bin"
+    partition = root / "build" / "partition_table" / "partition-table.bin"
+
+    # Verify binaries exist
+    for f in [bootloader, firmware, partition]:
+        if not f.exists():
+            print(f"[ERROR] File not found: {f}")
+            sys.exit(1)
+
+    # Build esptool command
+    cmd = [
+        sys.executable, "-m", "esptool",
+        "--chip", chip,
+        "--port", port,
+        "--baud", str(baud),
+        "--before", before,
+        "--after", after,
+        "write-flash",                     # ✅ hyphenated command
+        "--flash-mode", flash_mode,       # ✅ hyphenated flags
+        "--flash-freq", flash_freq,
+        "--flash-size", flash_size,
+        "0x0", str(bootloader),
+        "0x10000", str(firmware),
+        "0x8000", str(partition)
+    ]
+
+
+    print(f"[Flashing] Running: {' '.join(cmd)}")
+    subprocess.run(cmd, check=True)
+
+if __name__ == "__main__":
+    main()

flash_tool/monitor.py

@@ -0,0 +1,45 @@
+import json
+import serial
+import sys
+import time
+from pathlib import Path
+# import colorama
+# colorama.just_fix_windows_console()
+
+print("\x1b[0;32mThis should be green\x1b[0m")
+print("\x1b[0;31mThis should be red\x1b[0m")
+
+def main():
+    # Load config
+    root = Path(__file__).resolve().parent.parent
+    config_file = root / "settings.json"
+    if not config_file.exists():
+        print(f"Error: settings.json not found at {config_file}")
+        sys.exit(1)
+
+    with open(config_file) as f:
+        cfg = json.load(f)
+
+    port = cfg.get("port", "COM3")
+    baud = cfg.get("monitor_baud", 115200)
+
+    print(f"[Serial Monitor] Connecting to {port} at {baud} baud...")
+
+    try:
+        with serial.Serial(port, baud, timeout=0.5) as ser:
+            print("[Serial Monitor] Press Ctrl+C to exit.\n")
+            while True:
+                if ser.in_waiting:
+                    line = ser.readline().decode(errors="replace")
+                    if line:
+                        print(line, end="")
+
+                time.sleep(0.01)
+    except KeyboardInterrupt:
+        print("\n[Serial Monitor] Disconnected.")
+    except serial.SerialException as e:
+        print(f"[Error] Could not open serial port {port}: {e}")
+        sys.exit(1)
+
+if __name__ == "__main__":
+    main()

flashmon.bat

@@ -0,0 +1,14 @@
+@echo off
+REM =============================================
+REM ESP32 Serial Monitor using settings.json
+REM =============================================
+
+IF NOT EXIST .venv\Scripts\python.exe (
+    echo [ERROR] .venv not found. Run setup-env.bat first.
+    pause
+    exit /b 1
+)
+
+call .venv\Scripts\activate.bat
+python flash_tool\flash.py
+python flash_tool\monitor.py

main/CMakeLists.txt

@@ -1,5 +1,5 @@
-idf_component_register(SRCS "system.c" "bubble.c" "keypad.c" "main.c"
+idf_component_register(SRCS "bt_app.c" "system.c" "bubble.c" "keypad.c" "main.c"
-                        "bt_app_core.c"                            
+                                                   
                             "gui.c"
                             "lsm6dsv.c"
                     INCLUDE_DIRS "."

main/bt_app.c

@@ -12,9 +12,11 @@
 #include "freertos/FreeRTOS.h"
 #include "freertos/queue.h"
 #include "freertos/task.h"
+#include "freertos/stream_buffer.h"
 #include "esp_log.h"
 
-#include "bt_app_core.h"
+#include "bt_app.h"
+#include "system.h"
 
 #include "esp_bt.h"
 #include "esp_bt_main.h"
@@ -368,18 +370,215 @@ static void bt_app_a2d_cb(esp_a2d_cb_event_t event, esp_a2d_cb_param_t *param)
     bt_app_work_dispatch(bt_app_av_sm_hdlr, event, param, sizeof(esp_a2d_cb_param_t), NULL);
 }
 
-static uint8_t btData[512];
-
-static void fillBuffer(uint8_t *data, int32_t len)
-{
 
 
+#define SAMPLE_RATE     44100
+#define TONE_FREQ       440.0f     // A4
+#define FADE_FREQ       1.0f       // 1 Hz fade L->R
+#define STREAM_BUF_SIZE (8192)
+#define CHUNK_SIZE      (512)
+
+StreamBufferHandle_t audio_stream_buf;
+
+void generate_synth_pcm(uint8_t *buf, int len) {
+    static float phase = 0.0f;
+    static float fade_phase = 0.0f;
+
+    int16_t *samples = (int16_t *)buf;
+    int samples_needed = len / 4;  // 4 bytes per stereo frame (2 bytes L, 2 bytes R)
+
+    for (int i = 0; i < samples_needed; i++) {
+        // Fade L/R amplitude: 0..1 for L, inverted for R
+        float fade = (sinf(2 * M_PI * fade_phase) + 1.0f) * 0.5f;
+
+        // Sine wave sample
+        float sample = sinf(2 * M_PI * phase);
+
+        int16_t left  = (int16_t)(sample * fade * 32767);
+        int16_t right = (int16_t)(sample * (1.0f - fade) * 32767);
+
+        samples[i * 2 + 0] = left;
+        samples[i * 2 + 1] = right;
+
+        // Advance phases
+        phase += TONE_FREQ / SAMPLE_RATE;
+        if (phase >= 1.0f) phase -= 1.0f;
+
+        fade_phase += FADE_FREQ / SAMPLE_RATE;
+        if (fade_phase >= 1.0f) fade_phase -= 1.0f;
+    }
 }
 
+#define MIN_RATE_HZ 1.0f
+#define MAX_RATE_HZ 440.0f
+#define CLICK_AMPLITUDE 32000  // 16-bit
+
+static float click_timer = 0.0f;
+
+void generate_synth_clicks(uint8_t *buf, int len, float balance) {
+
+    int16_t *samples = (int16_t *)buf;
+    int samples_needed = len / 4;
+
+    float abs_balance = fabsf(balance);
+    float rate_hz = MIN_RATE_HZ * powf(MAX_RATE_HZ / MIN_RATE_HZ, abs_balance);
+    float samples_per_click = SAMPLE_RATE / rate_hz;
+
+    for (int i = 0; i < samples_needed; i++) {
+        int16_t left = 0;
+        int16_t right = 0;
+
+        if (click_timer <= 0.0f) {
+            // Insert a short pulse: single sample spike
+            if (balance < 0) {
+                left = CLICK_AMPLITUDE;
+            } else if (balance > 0) {
+                right = CLICK_AMPLITUDE;
+            }
+            click_timer += samples_per_click;
+        }
+
+        click_timer -= 1.0f;
+
+        samples[i * 2 + 0] = left;
+        samples[i * 2 + 1] = right;
+
+    }
+}
+
+void audio_producer_task(void *pvParameters) {
+    uint8_t chunk[CHUNK_SIZE];
+
+    int core_id = xPortGetCoreID();
+
+    ESP_LOGI("Producer", "Running on core %d", core_id);
+
+    system_subscribe(xTaskGetCurrentTaskHandle());
+#if 0    
+    
+
+    while (1) {
+        generate_synth_pcm(chunk, sizeof(chunk));
+
+        size_t sent = xStreamBufferSend(audio_stream_buf, chunk, sizeof(chunk), portMAX_DELAY);
+
+        if (sent < sizeof(chunk)) {
+            ESP_LOGW(BT_APP_CORE_TAG, "Dropped %d bytes", sizeof(chunk) - sent);
+        }
+    }
+#endif
+
+    static float phase = 0.0f;
+
+    float balance = 0.0f;  // -1.0 = left, +1.0 = right
+
+    uint32_t raw_value;
+    uint32_t notifiedBits = 0;
+
+    while (1) {
+        // Non-blocking check for new notification:
+                    
+            // clear on entry (first param), wait for any bit, block forever
+        xTaskNotifyWait(
+            0,        // clear any old bits on entry
+            0,        // clear bits on exit
+            &notifiedBits,
+            0);
+
+        if (notifiedBits & EM_EVENT_NEW_DATA) 
+        {
+            ImuData_t d = system_getImuData();
+
+            if (fabs(d.raw[system_getPrimaryAxis()]) > 45.0f)
+            {
+                balance = 0.0f;
+            }
+            else
+            {
+                balance = -d.angle / MAX_INDICATION_ANGLE;
+            }
+        }
+    
+        if (balance > 1.0f)
+        {
+            balance = 1.0f;
+        }
+        else
+        if (balance < -1.0f)
+        {
+            balance = -1.0f;
+        }
+        generate_synth_clicks(chunk, sizeof(chunk), balance);
+
+#if 0
+        // Synthesize audio using latest balance
+        int16_t *samples = (int16_t *)chunk;
+        int samples_needed = CHUNK_SIZE / 4;
+
+        for (int i = 0; i < samples_needed; i++) {
+            float sample = sinf(2 * M_PI * phase);
+
+            float left_gain  = 0.5f * (1.0f - balance);
+            float right_gain = 0.5f * (1.0f + balance);
+
+            int16_t left  = (int16_t)(sample * left_gain * 32767);
+            int16_t right = (int16_t)(sample * right_gain * 32767);
+
+            samples[i * 2 + 0] = left;
+            samples[i * 2 + 1] = right;
+
+            phase += TONE_FREQ / SAMPLE_RATE;
+            if (phase >= 1.0f) phase -= 1.0f;
+        }
+#endif
+
+        // Push chunk to FIFO
+        xStreamBufferSend(audio_stream_buf, chunk, sizeof(chunk), portMAX_DELAY);
+    }
+}
+
+/* generate some random noise to simulate source audio */
+static int32_t bt_app_a2d_data_cb(uint8_t *data, int32_t len)
+{
+        size_t bytes_read = xStreamBufferReceive(audio_stream_buf, data, len, 0);
+
+    if (bytes_read < len) {
+        memset(data + bytes_read, 0, len - bytes_read);  // fill silence
+    }
+
+    return len;
+#if 0    
+    if (data == NULL || len < 0) {
+        return 0;
+    }
+
+    int16_t *p_buf = (int16_t *)data;
+    for (int i = 0; i < (len >> 1); i++) {
+        p_buf[i] = rand() % (1 << 16);
+    }
+
+    return len;
+#endif    
+}
+
+#if 0
+
 /* Generate a continuous 440Hz sine wave */
 static int32_t bt_app_a2d_data_cb(uint8_t *data, int32_t len)
 {
-        static double phase = 0.0;
+
+        if (data == NULL || len < 0) {
+        return 0;
+    }
+
+    int16_t *p_buf = (int16_t *)data;
+    for (int i = 0; i < (len >> 1); i++) {
+        p_buf[i] = rand() % (1 << 16);
+    }
+
+    return len;
+#if 0
+    static double phase = 0.0;
     const double frequency = 440.0; // A4 tone (440 Hz)
     const double sample_rate = 44100.0; // 44.1 kHz sample rate
     const double phase_increment = 2.0 * M_PI * frequency / sample_rate;
@@ -406,7 +605,9 @@ static int32_t bt_app_a2d_data_cb(uint8_t *data, int32_t len)
         }
     }
     return len;
+#endif    
 }
+#endif
 
 static void bt_app_a2d_heart_beat(TimerHandle_t arg)
 {
@@ -551,6 +752,7 @@ static void bt_app_av_media_proc(uint16_t event, void *param)
     }
     case APP_AV_MEDIA_STATE_STARTED: {
         if (event == BT_APP_HEART_BEAT_EVT) {
+#if 0            
             /* stop media after 10 heart beat intervals */
             if (++s_intv_cnt >= 10) {
                 ESP_LOGI(BT_AV_TAG, "a2dp media suspending...");
@@ -558,6 +760,7 @@ static void bt_app_av_media_proc(uint16_t event, void *param)
                 s_media_state = APP_AV_MEDIA_STATE_STOPPING;
                 s_intv_cnt = 0;
             }
+#endif                
         }
         break;
     }
@@ -791,6 +994,10 @@ static void bt_app_task_handler(void *arg)
 {
     bt_app_msg_t msg;
 
+    int core_id = xPortGetCoreID();
+
+    ESP_LOGI("MY_TASK", "Running on core %d", core_id);
+
     for (;;) {
         /* receive message from work queue and handle it */
         if (pdTRUE == xQueueReceive(s_bt_app_task_queue, &msg, (TickType_t)portMAX_DELAY)) {
@@ -846,7 +1053,9 @@ bool bt_app_work_dispatch(bt_app_cb_t p_cback, uint16_t event, void *p_params, i
 void bt_app_task_start_up(void)
 {
     s_bt_app_task_queue = xQueueCreate(10, sizeof(bt_app_msg_t));
-    xTaskCreate(bt_app_task_handler, "BtAppTask", 4096, NULL, 10, &s_bt_app_task_handle);
+    //xTaskCreate(bt_app_task_handler, "BtAppTask", 8192, NULL, 10, &s_bt_app_task_handle);
+
+    xTaskCreatePinnedToCore(bt_app_task_handler, "BtAppTask", 8192, NULL, 10, NULL, 1);
 }
 
 void bt_app_task_shut_down(void)
@@ -867,7 +1076,27 @@ void bt_app_init(void)
     esp_err_t ret;
     char bda_str[18] = {0};
 
-    fillBuffer(btData, 512);
+
+    //esp_err_t esp_bredr_tx_power_get(esp_power_level_t *min_power_level, esp_power_level_t *max_power_level)
+    esp_power_level_t pmin;
+    esp_power_level_t pmax;
+    esp_bredr_tx_power_get(&pmin, &pmax);
+
+    ESP_LOGI(BT_APP_CORE_TAG, "BT Power min = %d\nBT Power max = %d", pmin, pmax);
+
+    //pmin = ESP_PWR_LVL_P6;
+    //pmax = ESP_PWR_LVL_P7;
+    pmin = ESP_PWR_LVL_N12;
+    pmax = ESP_PWR_LVL_N9;
+    
+    esp_err_t err = esp_bredr_tx_power_set(pmin, pmax);
+    if (err != ESP_OK) {
+        ESP_LOGE(BT_APP_CORE_TAG, "Failed to set TX power: %s", esp_err_to_name(err));
+    }
+
+    esp_bredr_tx_power_get(&pmin, &pmax);
+
+    ESP_LOGI(BT_APP_CORE_TAG, "BT Power min = %d\nBT Power max = %d", pmin, pmax);
 
     /*
      * This example only uses the functions of Classical Bluetooth.
@@ -885,6 +1114,10 @@ void bt_app_init(void)
         return;
     }
 
+     err = esp_bredr_tx_power_set(pmin, pmax);
+    if (err != ESP_OK) {
+        ESP_LOGE(BT_APP_CORE_TAG, "Failed to set TX power: %s", esp_err_to_name(err));
+    }
     esp_bluedroid_config_t bluedroid_cfg = BT_BLUEDROID_INIT_CONFIG_DEFAULT();
 #if (CONFIG_EXAMPLE_SSP_ENABLED == false)
     bluedroid_cfg.ssp_en = false;
@@ -918,4 +1151,19 @@ void bt_app_init(void)
     bt_app_task_start_up();
     /* Bluetooth device name, connection mode and profile set up */
     bt_app_work_dispatch(bt_av_hdl_stack_evt, BT_APP_STACK_UP_EVT, NULL, 0, NULL);
+
+
+
+    audio_stream_buf = xStreamBufferCreate(STREAM_BUF_SIZE, 1);
+    assert(audio_stream_buf != NULL);
+
+    //xTaskCreate(audio_producer_task, "audio_producer", 4096, NULL, 5, NULL);
+    xTaskCreatePinnedToCore(audio_producer_task, "audio_producer", 4096, NULL, 5, NULL, 1);
+
+    ESP_LOGI(BT_APP_CORE_TAG, "Audio synth producer started");
+
+    vTaskDelay(pdMS_TO_TICKS(1000));
+
+
+
 }

main/gpio.h

@@ -5,6 +5,7 @@
 #define PIN_NUM_BUTTON_0        36
 #define PIN_NUM_BUTTON_1        39
 #define PIN_NUM_LED_1           32
+#define PIN_NUM_LED_2           33
 #define PIN_NUM_nON				26
 
 

main/gui.c

@@ -105,9 +105,9 @@ static void create_lvgl_demo(void)
     lvgl_port_lock(0);
     // Create a screen with black background
     lv_obj_t *scr = lv_scr_act();
-    //create_menu(scr);
+    
     createBubble(scr);
-    build_scrollable_menu();
+    //build_scrollable_menu();
 
     lvgl_port_unlock();
 
@@ -167,8 +167,8 @@ static void lvgl_init(void)
 #if 1
     const lvgl_port_cfg_t lvgl_cfg = {
         .task_priority = 4,        // LVGL task priority
-        .task_stack = 32768,        // LVGL task stack size
+        .task_stack = 16384,        // LVGL task stack size
-        .task_affinity = -1,       // LVGL task can run on any core
+        .task_affinity = 0,       // LVGL task can run on any core
         .task_max_sleep_ms = 500,  // Maximum sleep in LVGL task
         .timer_period_ms = 5       // LVGL timer period
     };
@@ -180,7 +180,7 @@ static void lvgl_init(void)
         .io_handle = io_handle,
         .panel_handle = panel_handle,
         .buffer_size = LCD_H_RES * LCD_V_RES * 2,
-        .double_buffer = true,
+        .double_buffer = false,
         .hres = LCD_H_RES,
         .vres = LCD_V_RES,
         .monochrome = false,
@@ -219,15 +219,10 @@ static void createBubble(lv_obj_t * scr)
     _bubble = level;
 }
 
-void ui_test()
-{
-    lv_obj_t *label = lv_label_create(lv_screen_active());
-    lv_label_set_text(label, "Hello, LVGL 9.2!");
-    lv_obj_center(label);
-}
 
 void gui_start(void)
 {
+
 	// Initialize LCD
     lcd_init();
 
@@ -237,7 +232,6 @@ void gui_start(void)
 	// Create UI
     create_lvgl_demo();
 
-
     keypad_start();
 
 	gpio_set_level(PIN_NUM_BK_LIGHT, 1);
@@ -333,21 +327,9 @@ static void refresh_highlight(void) {
         next = lv_obj_get_child(page, index);
     }
 
-    // for(int i = 0; i < ITEM_COUNT; i++) {
-    //     if(i == selected_idx) {
-    //         lv_obj_set_style_bg_color(btn_array[i], lv_color_hex(0xFF8800), 0);
-    //         lv_obj_set_style_text_color(lv_obj_get_child(btn_array[i],0),
-    //                                     lv_color_white(), 0);
-    //     } else {
-    //         lv_obj_set_style_bg_color(btn_array[i], lv_color_white(), 0);
-    //         lv_obj_set_style_text_color(lv_obj_get_child(btn_array[i],0),
-    //                                     lv_color_black(), 0);
-    //     }
-    // }
-
     if (selected)
     {
-    lv_obj_scroll_to_view(selected, LV_ANIM_ON);
+        lv_obj_scroll_to_view(selected, LV_ANIM_ON);
     }
 
     lvgl_port_unlock();
@@ -522,39 +504,6 @@ static void build_scrollable_menu(void) {
 
     _currentPage = main;
 
-
-    
-#if 0
-    for(int i = 0; i < ITEM_COUNT; i++) {
-        // create a full-width button in that section
-        lv_obj_t * btn = lv_btn_create(main);
-        lv_obj_set_size(btn, LV_PCT(100), ROW_H);
-
-        // style it just like your old list
-        lv_obj_set_style_bg_color(btn, lv_color_white(), 0);
-        lv_obj_set_style_radius(btn, 0, LV_PART_MAIN); 
-        lv_obj_set_style_border_width(btn, 0, LV_PART_MAIN);
-        lv_obj_clear_flag(btn, LV_OBJ_FLAG_SCROLLABLE);
-        
-
-        // label & center
-        lv_obj_t * lbl = lv_label_create(btn);
-        lv_label_set_text(lbl, items[i]);
-        lv_obj_set_style_radius(lbl, 0, LV_PART_MAIN | LV_STATE_ANY); 
-        lv_obj_set_style_border_width(lbl, 0, LV_PART_MAIN | LV_STATE_ANY);
-        //lv_obj_center(lbl);
-
-        // click callback
-        lv_obj_add_event_cb(btn, btn_click_cb, LV_EVENT_CLICKED, NULL);
-
-        // save for highlight/scroll
-        btn_array[i] = btn;
-    }
-
-//     lv_obj_t * content = lv_obj_get_child(page, 0);  
-// lv_obj_set_style_radius(content, 0, LV_PART_MAIN | LV_STATE_ANY);
-// lv_obj_set_style_border_width(content, 0, LV_PART_MAIN | LV_STATE_ANY);
-#endif
     // 6) Initial highlight
     selected_idx = 0;
     refresh_highlight();
@@ -563,6 +512,7 @@ static void build_scrollable_menu(void) {
 
 }
 
+
 static void gui_task(void)
 {
     system_subscribe(xTaskGetCurrentTaskHandle());
@@ -571,8 +521,12 @@ static void gui_task(void)
     QueueHandle_t q = keypad_getQueue();
     uint32_t ev = 0;
 
+    LOCK();
+    // _mode = GUI_MENU;
+    // lv_obj_remove_flag(_menu, LV_OBJ_FLAG_HIDDEN);
     lv_obj_remove_flag(_bubble, LV_OBJ_FLAG_HIDDEN);
-    lv_obj_add_flag(_menu, LV_OBJ_FLAG_HIDDEN);
+    //lv_obj_add_flag(_menu, LV_OBJ_FLAG_HIDDEN);
+    UNLOCK();
 
     while (1)
     {
@@ -581,6 +535,19 @@ static void gui_task(void)
         if (xQueueReceive(q, &ev, pdMS_TO_TICKS(10)) == pdTRUE) 
         {
             switch (ev) {
+
+                case (KEY_UP << KEY_LONG_PRESS):
+                {
+                    system_setZeroAngle();
+                    break;
+                }
+
+                case (KEY_DOWN << KEY_LONG_PRESS):
+                {
+                    system_clearZeroAngle();
+                    break;
+                }
+#if 0                
             case (KEY0 << KEY_SHORT_PRESS):
 
                 if (_mode == GUI_MENU)
@@ -590,6 +557,8 @@ static void gui_task(void)
                 ESP_LOGI(TAG, "MAIN: Button 1 SHORT");
                 break;
             case (KEY0 << KEY_LONG_PRESS):
+            {
+
              
                 if (_mode != GUI_MENU)
                 {
@@ -605,8 +574,8 @@ static void gui_task(void)
                     // lv_obj_remove_flag(_bubble, LV_OBJ_FLAG_HIDDEN);
                     // lv_obj_add_flag(_menu, LV_OBJ_FLAG_HIDDEN);
                 }
-
                 break;
+            }
             case (KEY1 << KEY_SHORT_PRESS):
             {
                 if (_mode == GUI_MENU)
@@ -619,6 +588,7 @@ static void gui_task(void)
                 ESP_LOGI(TAG, "MAIN: Button 2 LONG");
                 gpio_set_level(PIN_NUM_nON, 0);
                 break;
+#endif                
             default:
                 break;
             }
@@ -633,7 +603,7 @@ static void gui_task(void)
                 0xFFFFFFFF,        // clear any old bits on entry
                 0xFFFFFFFF,        // clear bits on exit
                 &notifiedBits,
-                pdMS_TO_TICKS(10));
+                pdMS_TO_TICKS(100));
 
             if (notifiedBits & EM_EVENT_NEW_DATA) 
             {

main/keypad.h

@@ -14,7 +14,8 @@ typedef enum
 #define KEY_SHORT_PRESS	0
 #define KEY_LONG_PRESS	4
 
-
+#define KEY_UP      KEY0
+#define KEY_DOWN    KEY1
 
 void keypad_start(void);
 QueueHandle_t keypad_getQueue(void);

main/main.c

@@ -21,7 +21,7 @@
 #include "nvs_flash.h"
 
 
-#include "bt_app_core.h"
+#include "bt_app.h"
 #include "lsm6dsv.h"
 #include "gui.h"
 #include "gpio.h"
@@ -71,8 +71,9 @@ static void init_gpio(void)
 
 
     // Configure output GPIO
-    io_conf.pin_bit_mask = (1ULL << PIN_NUM_LED_1);
+    io_conf.pin_bit_mask = (1ULL << PIN_NUM_LED_1) | (1ULL << PIN_NUM_LED_2);
     io_conf.mode = GPIO_MODE_OUTPUT;
+    io_conf.intr_type = GPIO_INTR_DISABLE;
     io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
     io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
     gpio_config(&io_conf);
@@ -86,7 +87,8 @@ static void init_gpio(void)
     
     io_conf.pin_bit_mask = (1ULL << PIN_NUM_nON);
     io_conf.mode = GPIO_MODE_OUTPUT;
-    io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
+    io_conf.intr_type = GPIO_INTR_DISABLE;
+    io_conf.pull_up_en = GPIO_PULLUP_ENABLE;
     io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
     gpio_config(&io_conf);
 #endif
@@ -95,8 +97,8 @@ static void init_gpio(void)
 
     // Configure LCD Backlight GPIO
     io_conf.pin_bit_mask =  (1ULL << PIN_NUM_BK_LIGHT);
-
     io_conf.mode = GPIO_MODE_OUTPUT;
+    io_conf.intr_type = GPIO_INTR_DISABLE;
     io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
     io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
     gpio_config(&io_conf);
@@ -116,7 +118,7 @@ static void imu_task(void *pvParameters) {
     ImuData_t imu;
 
     LowPassFilter lpf;
-    LPF_Init(&lpf, 0.2, 0);
+    LPF_Init(&lpf, FILTER_COEFF, 0);
 
     while (1) {
 
@@ -170,20 +172,20 @@ static void imu_task(void *pvParameters) {
             
             float angle;
 
-            if (imu.raw[ANGLE_XY] > MAX_INDICATION_ANGLE)
+
+            angle = system_getAngle(); 
+
+            if (angle > MAX_INDICATION_ANGLE)
             {
                 angle = MAX_INDICATION_ANGLE;
             }
             else
-            if (imu.raw[ANGLE_XY] > MAX_INDICATION_ANGLE)
+            if (angle < -MAX_INDICATION_ANGLE)
             {
                 angle = -MAX_INDICATION_ANGLE;
             }
-            else
-            {
-                angle = imu.raw[ANGLE_XY];
-            }
             
+            // low pass filter the angle measurement
             imu.angle = LPF_Update(&lpf, angle);
 
             //imu.filtered[ANGLE_XY] = LPF_Update(&lpf, imu.raw[ANGLE_XY]);
@@ -197,7 +199,7 @@ static void imu_task(void *pvParameters) {
 #if 0
             snprintf(data_str, sizeof(data_str),
                     "(%.1f, %.1f, %.1f) (%.2f, %.2f, %.2f)", 
-                    xz, yz, xy,
+                    imu.raw[ANGLE_XZ], imu.raw[ANGLE_YZ], imu.raw[ANGLE_XY],
                     (float)imu_data.acc_x, (float)imu_data.acc_y, (float)imu_data.acc_z);
             ESP_LOGI(TAG, "%s", data_str);
 #endif
@@ -218,12 +220,12 @@ void app_main(void)
 {
     
     /* initialize NVS — it is used to store PHY calibration data */
-    // esp_err_t ret = nvs_flash_init();
+    esp_err_t ret = nvs_flash_init();
-    // if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
-    //     ESP_ERROR_CHECK(nvs_flash_erase());
+        ESP_ERROR_CHECK(nvs_flash_erase());
-    //     ret = nvs_flash_init();
+        ret = nvs_flash_init();
-    // }
+    }
-    // ESP_ERROR_CHECK(ret);
+    ESP_ERROR_CHECK(ret);
 
     init_gpio();
 
@@ -241,26 +243,49 @@ void app_main(void)
     
 
     
-
+    bt_app_init();
 
     gui_start();
     
+    gpio_set_level(PIN_NUM_LED_2, 1);
 
 
-    //bt_app_init();
+#if 0
 
+    keypad_start();
+    QueueHandle_t q = keypad_getQueue();
+    uint32_t ev = 0;
 
+    //gpio_set_level(PIN_NUM_LED_1, 1);
+    gpio_set_level(PIN_NUM_LED_2, 1);
 
     // Main loop - LVGL task will run automatically
     while (1) {
         
-        // int level = gpio_get_level(PIN_NUM_BUTTON_1); // Read input GPIO
+        if (xQueueReceive(q, &ev, pdMS_TO_TICKS(10)) == pdTRUE) 
-        // gpio_set_level(PIN_NUM_LED_1, level);
+        {
+            switch (ev) 
+            {
+                case (KEY_UP << KEY_LONG_PRESS):
+                {
+                    system_setZeroAngle();
+                    break;
+                }
 
-        //gpio_set_level(PIN_NUM_nON, (level ? 0 : 1));
+                case (KEY_DOWN << KEY_LONG_PRESS):
+                {
+                    system_clearZeroAngle();
+                    break;
+                }
+            }
             
-        vTaskDelay(pdMS_TO_TICKS(100));
+        }
  
-        //gui_service();
     }
+#else
+    while (1)
+    {
+        vTaskDelay(pdMS_TO_TICKS(1000));
+    }    
+#endif
 }

main/system.c

@@ -8,12 +8,77 @@ static EventManager_t _eventManager;
 
 void system_init(void)
 {
+    _systemState.zeroAngle = 0.0f;
+    _systemState.primaryAxis = PRIMARY_AXIS;
+
 	EventGroupHandle_t evt = xEventGroupCreate();
 
 	_eventManager.count = 0;
     _eventManager.mutex = xSemaphoreCreateMutex();
 }
 
+int system_getPrimaryAxis(void)
+{
+    int axis;
+
+    xSemaphoreTake(_eventManager.mutex, portMAX_DELAY);
+    axis = _systemState.primaryAxis;
+    xSemaphoreGive(_eventManager.mutex);
+
+    return axis;
+}
+
+float system_getAngle(void)
+{
+    float angle;
+
+    xSemaphoreTake(_eventManager.mutex, portMAX_DELAY);
+
+    
+    angle = _systemState.imu.raw[_systemState.primaryAxis] - _systemState.zeroAngle;
+
+
+	xSemaphoreGive(_eventManager.mutex);
+
+    return angle;    
+}
+
+void system_setZeroAngle(void)
+{
+    xSemaphoreTake(_eventManager.mutex, portMAX_DELAY);
+
+    
+	_systemState.zeroAngle = _systemState.imu.raw[_systemState.primaryAxis];
+
+    ESP_LOGI("system", "Zero: %.1f", _systemState.zeroAngle);
+
+	xSemaphoreGive(_eventManager.mutex);
+}
+
+void system_clearZeroAngle(void)
+{
+    xSemaphoreTake(_eventManager.mutex, portMAX_DELAY);
+
+	_systemState.zeroAngle = 0.0f;
+
+    ESP_LOGI("system", "Zero: %.1f", _systemState.zeroAngle);
+
+	xSemaphoreGive(_eventManager.mutex);
+}
+
+float system_getZeroAngle(void)
+{
+    float angle;
+
+    xSemaphoreTake(_eventManager.mutex, portMAX_DELAY);
+
+	angle = _systemState.zeroAngle;
+
+	xSemaphoreGive(_eventManager.mutex);
+
+    return angle;
+}
+
 void system_setImuData(ImuData_t imu)
 {
 	xSemaphoreTake(_eventManager.mutex, portMAX_DELAY);

main/system.h

@@ -5,6 +5,8 @@
 #include "freertos/task.h"
 #include "freertos/semphr.h"
 
+#define DISABLE_GUI
+
 enum
 {
     ANGLE_XY = 0,
@@ -27,11 +29,15 @@ typedef struct SystemState_s
 
 	EventGroupHandle_t event;
 
+    float zeroAngle;
+    int primaryAxis;
 
 } SystemState_t;
 
 
-#define MAX_INDICATION_ANGLE    10.0f
+#define MAX_INDICATION_ANGLE    5.0f
+#define FILTER_COEFF            0.2f        // 0 to 1   Smaller number is heavier filter
+#define PRIMARY_AXIS            ANGLE_YZ
 
 #define EM_MAX_SUBSCRIBERS 8    // tweak as needed
 #define EM_EVENT_NEW_DATA   (1UL<<0)
@@ -49,6 +55,13 @@ void system_setImuData(ImuData_t imu);
 
 ImuData_t system_getImuData(void);
 
+int system_getPrimaryAxis(void);
+float system_getAngle(void);
+
+void system_setZeroAngle(void);
+void system_clearZeroAngle(void);
+float system_getZeroAngle(void);
+
 // Subscribe (register) current task to receive events
 BaseType_t system_subscribe(TaskHandle_t task);
 

monitor.bat

@@ -0,0 +1,13 @@
+@echo off
+REM =============================================
+REM ESP32 Serial Monitor using settings.json
+REM =============================================
+
+IF NOT EXIST .venv\Scripts\python.exe (
+    echo [ERROR] .venv not found. Run setup-env.bat first.
+    pause
+    exit /b 1
+)
+
+call .venv\Scripts\activate.bat
+python flash_tool\monitor.py

prepare_config.py

@@ -0,0 +1,10 @@
+import json
+
+with open("settings.json") as f:
+    cfg = json.load(f)
+
+with open("project_settings.cmake", "w") as out:
+    out.write(f'set(PROJECT_NAME "{cfg["project_name"]}")\n')
+    out.write(f'set(CHIP "{cfg["chip"]}")\n')
+    out.write(f'set(PORT "{cfg["port"]}")\n')
+    out.write(f'set(BAUD "{cfg["baud"]}")\n')

requirements.txt

@@ -0,0 +1,3 @@
+esptool
+pyserial
+

sdkconfig

@@ -353,14 +353,14 @@ CONFIG_ESPTOOLPY_FLASHFREQ_40M=y
 # CONFIG_ESPTOOLPY_FLASHFREQ_20M is not set
 CONFIG_ESPTOOLPY_FLASHFREQ="40m"
 # CONFIG_ESPTOOLPY_FLASHSIZE_1MB is not set
-CONFIG_ESPTOOLPY_FLASHSIZE_2MB=y
+# CONFIG_ESPTOOLPY_FLASHSIZE_2MB is not set
-# CONFIG_ESPTOOLPY_FLASHSIZE_4MB is not set
+CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
 # CONFIG_ESPTOOLPY_FLASHSIZE_8MB is not set
 # CONFIG_ESPTOOLPY_FLASHSIZE_16MB is not set
 # CONFIG_ESPTOOLPY_FLASHSIZE_32MB is not set
 # CONFIG_ESPTOOLPY_FLASHSIZE_64MB is not set
 # CONFIG_ESPTOOLPY_FLASHSIZE_128MB is not set
-CONFIG_ESPTOOLPY_FLASHSIZE="2MB"
+CONFIG_ESPTOOLPY_FLASHSIZE="4MB"
 # CONFIG_ESPTOOLPY_HEADER_FLASHSIZE_UPDATE is not set
 CONFIG_ESPTOOLPY_BEFORE_RESET=y
 # CONFIG_ESPTOOLPY_BEFORE_NORESET is not set
@@ -393,8 +393,8 @@ CONFIG_EXAMPLE_SSP_ENABLED=y
 #
 # Compiler options
 #
-CONFIG_COMPILER_OPTIMIZATION_DEBUG=y
+# CONFIG_COMPILER_OPTIMIZATION_DEBUG is not set
-# CONFIG_COMPILER_OPTIMIZATION_SIZE is not set
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
 # CONFIG_COMPILER_OPTIMIZATION_PERF is not set
 # CONFIG_COMPILER_OPTIMIZATION_NONE is not set
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_ENABLE=y
@@ -1448,7 +1448,6 @@ CONFIG_FREERTOS_TASK_NOTIFICATION_ARRAY_ENTRIES=1
 #
 # Port
 #
-CONFIG_FREERTOS_TASK_FUNCTION_WRAPPER=y
 # CONFIG_FREERTOS_WATCHPOINT_END_OF_STACK is not set
 CONFIG_FREERTOS_TLSP_DELETION_CALLBACKS=y
 # CONFIG_FREERTOS_TASK_PRE_DELETION_HOOK is not set
@@ -1497,7 +1496,7 @@ CONFIG_HEAP_TRACING_OFF=y
 # CONFIG_HEAP_TRACING_TOHOST is not set
 # CONFIG_HEAP_USE_HOOKS is not set
 # CONFIG_HEAP_TASK_TRACKING is not set
-# CONFIG_HEAP_ABORT_WHEN_ALLOCATION_FAILS is not set
+CONFIG_HEAP_ABORT_WHEN_ALLOCATION_FAILS=y
 # CONFIG_HEAP_PLACE_FUNCTION_INTO_FLASH is not set
 # end of Heap memory debugging
 
@@ -2496,11 +2495,11 @@ CONFIG_LOG_BOOTLOADER_LEVEL=3
 CONFIG_FLASHMODE_DIO=y
 # CONFIG_FLASHMODE_DOUT is not set
 CONFIG_MONITOR_BAUD=115200
-CONFIG_OPTIMIZATION_LEVEL_DEBUG=y
+# CONFIG_OPTIMIZATION_LEVEL_DEBUG is not set
-CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG=y
+# CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG is not set
-CONFIG_COMPILER_OPTIMIZATION_DEFAULT=y
+# CONFIG_COMPILER_OPTIMIZATION_DEFAULT is not set
-# CONFIG_OPTIMIZATION_LEVEL_RELEASE is not set
+CONFIG_OPTIMIZATION_LEVEL_RELEASE=y
-# CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE is not set
+CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE=y
 CONFIG_OPTIMIZATION_ASSERTIONS_ENABLED=y
 # CONFIG_OPTIMIZATION_ASSERTIONS_SILENT is not set
 # CONFIG_OPTIMIZATION_ASSERTIONS_DISABLED is not set

sdkconfig.defaults

@@ -0,0 +1,9 @@
+# Override some defaults so BT stack is enabled and
+# Classic BT is enabled
+CONFIG_BT_ENABLED=y
+CONFIG_BTDM_CTRL_MODE_BLE_ONLY=n
+CONFIG_BTDM_CTRL_MODE_BR_EDR_ONLY=y
+CONFIG_BTDM_CTRL_MODE_BTDM=n
+CONFIG_BT_BLUEDROID_ENABLED=y
+CONFIG_BT_CLASSIC_ENABLED=y
+CONFIG_BT_A2DP_ENABLE=y

settings.json

@@ -0,0 +1,12 @@
+{
+  "project_name": "soundshot",
+  "chip": "esp32h2",
+  "port": "COM8",
+  "monitor_baud": 115200,
+  "flash_baud": 460800,
+  "flash_mode": "dio",
+  "flash_freq": "48m",
+  "flash_size": "2MB",
+  "before": "default-reset",
+  "after": "hard-reset"
+}

setup-env.bat

@@ -0,0 +1,17 @@
+@echo off
+setlocal
+
+echo [ESP32 Setup] Creating Python virtual environment...
+python -m venv .venv
+
+echo [ESP32 Setup] Activating environment...
+call .venv\Scripts\activate.bat
+
+echo [ESP32 Setup] Installing dependencies...
+pip install -r requirements.txt
+
+echo [ESP32 Setup] Done!
+echo To activate environment later: call .venv\Scripts\activate.bat
+
+endlocal
+pause