Fix firmware for ESP-IDF v5.3 and hardware-verified operation

- Switch UART0 for protocol I/O (USB bridge), disable ESP-IDF console
- Wire all 21 command handlers into dispatch table (was only 4)
- Add configure command handler (name, io_cap, device_class)
- Add bt_classic_is_enabled()/bt_ble_is_enabled() for live status
- Fix cJSON_False misuse in get_status (type constant, not boolean)
- Fix esp_bt_gap_set_cod() to use esp_bt_cod_t bitfield struct
- Fix auth_cmpl.auth_mode → lk_type for ESP-IDF v5.3
- Replace deprecated esp_bt_dev_set_device_name with stack-specific API
- Remove unused bytes_to_hex, obsolete kconfig symbols
- Use large partition table (1.5MB) for dual-mode BT stack

Verified on ESP32-D0WD-V3 rev 3.1, /dev/ttyUSB4, all commands tested.

firmware/main/bt_ble.c

@@ -114,14 +114,6 @@ static int hex_to_bytes(const char *hex, uint8_t *out, int max_len)
     return len;
 }
 
-static void bytes_to_hex(const uint8_t *data, int len, char *out)
-{
-    for (int i = 0; i < len; i++) {
-        sprintf(out + i * 2, "%02x", data[i]);
-    }
-    out[len * 2] = '\0';
-}
-
 static uint8_t properties_from_json(cJSON *arr)
 {
     uint8_t props = 0;
@@ -424,6 +416,15 @@ static void gatts_event_handler(esp_gatts_cb_event_t event,
     }
 }
 
+/* ------------------------------------------------------------------ */
+/* State query                                                         */
+/* ------------------------------------------------------------------ */
+
+bool bt_ble_is_enabled(void)
+{
+    return s_ble.enabled;
+}
+
 /* ------------------------------------------------------------------ */
 /* Command handlers                                                    */
 /* ------------------------------------------------------------------ */

firmware/main/bt_ble.h

@@ -1,10 +1,14 @@
 #pragma once
 
+#include <stdbool.h>
 #include "cJSON.h"
 
 /* Initialize BLE subsystem (Bluedroid GATTS) */
 void bt_ble_init(void);
 
+/* State query */
+bool bt_ble_is_enabled(void);
+
 /* Command handlers (called from cmd_dispatcher) */
 void cmd_ble_enable(const char *id, cJSON *params);
 void cmd_ble_disable(const char *id, cJSON *params);

firmware/main/bt_classic.c

@@ -105,9 +105,9 @@ static void gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param)
         bd_addr_to_str(param->auth_cmpl.bda, addr_str);
         bool ok = (param->auth_cmpl.stat == ESP_BT_STATUS_SUCCESS);
 
-        ESP_LOGI(TAG, "auth_cmpl: %s %s (mode=%d)",
+        ESP_LOGI(TAG, "auth_cmpl: %s %s (lk_type=%d)",
                  addr_str, ok ? "success" : "FAIL",
-                 param->auth_cmpl.auth_mode);
+                 param->auth_cmpl.lk_type);
 
         event_report_pair_complete(addr_str, ok);
 
@@ -583,6 +583,15 @@ void cmd_classic_set_ssp_mode(const char *id, cJSON *params)
     uart_send_response(id, STATUS_OK, data);
 }
 
+/* ------------------------------------------------------------------ */
+/* State query                                                         */
+/* ------------------------------------------------------------------ */
+
+bool bt_classic_is_enabled(void)
+{
+    return classic_state.enabled;
+}
+
 /* ------------------------------------------------------------------ */
 /* Configure helpers (called from the configure command handler)       */
 /* ------------------------------------------------------------------ */
@@ -605,11 +614,16 @@ void bt_classic_set_io_cap(const char *io_cap_str)
     }
 }
 
-void bt_classic_set_device_class(uint32_t cod)
+void bt_classic_set_device_class(uint32_t cod_raw)
 {
-    esp_err_t err = esp_bt_gap_set_cod(cod, ESP_BT_SET_COD_ALL);
+    esp_bt_cod_t cod;
+    memset(&cod, 0, sizeof(cod));
+    cod.minor   = (cod_raw >> 2) & 0x3F;
+    cod.major   = (cod_raw >> 8) & 0x1F;
+    cod.service = (cod_raw >> 13) & 0x7FF;
+    esp_err_t err = esp_bt_gap_set_cod(cod, ESP_BT_SET_COD_MAJOR_MINOR | ESP_BT_SET_COD_SERVICE_CLASS);
     if (err == ESP_OK) {
-        ESP_LOGI(TAG, "CoD set to 0x%06" PRIx32, cod);
+        ESP_LOGI(TAG, "CoD set to 0x%06" PRIx32, cod_raw);
     } else {
         ESP_LOGE(TAG, "set_cod failed: %s", esp_err_to_name(err));
     }

firmware/main/bt_classic.h

@@ -3,6 +3,9 @@
  */
 
 #pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
 #include "cJSON.h"
 
 void bt_classic_init(void);
@@ -14,6 +17,9 @@ void cmd_classic_set_discoverable(const char *id, cJSON *params);
 void cmd_classic_pair_respond(const char *id, cJSON *params);
 void cmd_classic_set_ssp_mode(const char *id, cJSON *params);
 
+/* State query */
+bool bt_classic_is_enabled(void);
+
 /* Called by configure command to set IO capabilities */
 void bt_classic_set_io_cap(const char *io_cap_str);
-void bt_classic_set_device_class(uint32_t cod);
+void bt_classic_set_device_class(uint32_t cod_raw);

firmware/main/cmd_dispatcher.c

@@ -1,13 +1,16 @@
 #include "cmd_dispatcher.h"
 #include "protocol.h"
 #include "uart_handler.h"
+#include "bt_classic.h"
+#include "bt_ble.h"
+#include "personas.h"
 
 #include "esp_system.h"
 #include "esp_chip_info.h"
 #include "esp_timer.h"
 #include "esp_log.h"
 #include "esp_mac.h"
-#include "esp_bt.h"
+#include "esp_gap_bt_api.h"
 #include "cJSON.h"
 
 #include <string.h>
@@ -23,11 +26,6 @@ typedef struct {
     cmd_handler_t handler;
 } cmd_entry_t;
 
-/* Forward declarations for handlers in other modules */
-extern void bt_classic_register_commands(void);
-extern void bt_ble_register_commands(void);
-extern void personas_register_commands(void);
-
 /* --- System command handlers --- */
 
 static void handle_ping(const char *id, cJSON *params)
@@ -97,30 +95,87 @@ static void handle_get_status(const char *id, cJSON *params)
     cJSON *data = cJSON_CreateObject();
     cJSON_AddNumberToObject(data, "uptime_ms", (double)uptime_ms);
     cJSON_AddNumberToObject(data, "free_heap", (double)esp_get_free_heap_size());
-    cJSON_AddBoolToObject(data, "bt_enabled", cJSON_False);
+    cJSON_AddBoolToObject(data, "bt_enabled", bt_classic_is_enabled());
-    cJSON_AddBoolToObject(data, "ble_enabled", cJSON_False);
+    cJSON_AddBoolToObject(data, "ble_enabled", bt_ble_is_enabled());
 
     uart_send_response(id, STATUS_OK, data);
 }
 
+/* --- Configure command: sets device name, IO capabilities, CoD --- */
+
+static void handle_configure(const char *id, cJSON *params)
+{
+    if (!params) {
+        cJSON *err = cJSON_CreateObject();
+        cJSON_AddStringToObject(err, "error", "params required");
+        uart_send_response(id, STATUS_ERROR, err);
+        return;
+    }
+
+    cJSON *applied = cJSON_CreateObject();
+
+    cJSON *name = cJSON_GetObjectItem(params, "name");
+    if (name && cJSON_IsString(name)) {
+        esp_bt_gap_set_device_name(name->valuestring);
+        cJSON_AddStringToObject(applied, "name", name->valuestring);
+    }
+
+    cJSON *io_cap = cJSON_GetObjectItem(params, "io_cap");
+    if (io_cap && cJSON_IsString(io_cap)) {
+        bt_classic_set_io_cap(io_cap->valuestring);
+        cJSON_AddStringToObject(applied, "io_cap", io_cap->valuestring);
+    }
+
+    cJSON *device_class = cJSON_GetObjectItem(params, "device_class");
+    if (device_class && cJSON_IsNumber(device_class)) {
+        bt_classic_set_device_class((uint32_t)device_class->valuedouble);
+        cJSON_AddNumberToObject(applied, "device_class", device_class->valuedouble);
+    }
+
+    uart_send_response(id, STATUS_OK, applied);
+}
+
 /* --- Command table --- */
 
 static const cmd_entry_t cmd_table[] = {
+    /* System */
     { CMD_PING,                    handle_ping                  },
     { CMD_RESET,                   handle_reset                 },
     { CMD_GET_INFO,                handle_get_info              },
     { CMD_GET_STATUS,              handle_get_status            },
+
+    /* Configuration */
+    { CMD_CONFIGURE,               handle_configure             },
+    { CMD_LOAD_PERSONA,            cmd_load_persona             },
+    { CMD_LIST_PERSONAS,           cmd_list_personas            },
+
+    /* Classic BT */
+    { CMD_CLASSIC_ENABLE,          cmd_classic_enable           },
+    { CMD_CLASSIC_DISABLE,         cmd_classic_disable          },
+    { CMD_CLASSIC_SET_DISCOVERABLE,cmd_classic_set_discoverable },
+    { CMD_CLASSIC_PAIR_RESPOND,    cmd_classic_pair_respond     },
+    { CMD_CLASSIC_SET_SSP_MODE,    cmd_classic_set_ssp_mode     },
+
+    /* BLE */
+    { CMD_BLE_ENABLE,              cmd_ble_enable               },
+    { CMD_BLE_DISABLE,             cmd_ble_disable              },
+    { CMD_BLE_ADVERTISE,           cmd_ble_advertise            },
+    { CMD_BLE_SET_ADV_DATA,        cmd_ble_set_adv_data         },
+
+    /* GATT */
+    { CMD_GATT_ADD_SERVICE,        cmd_gatt_add_service         },
+    { CMD_GATT_ADD_CHARACTERISTIC, cmd_gatt_add_characteristic  },
+    { CMD_GATT_SET_VALUE,          cmd_gatt_set_value           },
+    { CMD_GATT_NOTIFY,             cmd_gatt_notify              },
+    { CMD_GATT_CLEAR,              cmd_gatt_clear               },
+
     { NULL, NULL }  /* sentinel */
 };
 
 void cmd_dispatcher_init(void)
 {
-    ESP_LOGI(TAG, "command dispatcher ready");
+    ESP_LOGI(TAG, "command dispatcher ready (%d commands)",
-
+             (int)(sizeof(cmd_table) / sizeof(cmd_table[0])) - 1);
-    /* Future: these will register their own handlers into the table */
-    /* bt_classic_register_commands(); */
-    /* bt_ble_register_commands(); */
-    /* personas_register_commands(); */
 }
 
 void cmd_dispatch(const char *id, const char *cmd, cJSON *params)

firmware/main/personas.c

@@ -14,6 +14,7 @@
 #include "bt_ble.h"
 
 #include "esp_bt_device.h"
+#include "esp_gap_bt_api.h"
 #include "esp_gap_ble_api.h"
 #include "esp_log.h"
 #include "cJSON.h"
@@ -174,7 +175,7 @@ void cmd_load_persona(const char *id, cJSON *params)
 
     /* --- Set device name on both stacks --- */
     if (p->classic_enabled) {
-        esp_bt_dev_set_device_name(p->device_name);
+        esp_bt_gap_set_device_name(p->device_name);
     }
     if (p->ble_enabled) {
         esp_ble_gap_set_device_name(p->device_name);

firmware/main/protocol.h

@@ -3,7 +3,7 @@
 #include "driver/uart.h"
 
 /* UART configuration */
-#define PROTO_UART_NUM        UART_NUM_1
+#define PROTO_UART_NUM        UART_NUM_0
 #define PROTO_BAUD_RATE       115200
 #define PROTO_TX_BUF_SIZE     4096
 #define PROTO_RX_BUF_SIZE     4096

firmware/main/uart_handler.c

@@ -14,9 +14,11 @@
 static const char *TAG = "uart";
 static SemaphoreHandle_t tx_mutex;
 
-/* Pin assignments -- keep UART0 free for ESP-IDF console/logging */
+/*
-#define UART_TX_PIN  GPIO_NUM_4
+ * Use UART0 — the dev board's USB bridge connects here.
-#define UART_RX_PIN  GPIO_NUM_5
+ * ESP-IDF console is disabled (CONFIG_ESP_CONSOLE_NONE=y) so we own UART0.
+ * Default UART0 pins (TX=GPIO1, RX=GPIO3) route through the USB bridge.
+ */
 
 void uart_handler_init(void)
 {
@@ -30,8 +32,7 @@ void uart_handler_init(void)
     };
 
     ESP_ERROR_CHECK(uart_param_config(PROTO_UART_NUM, &cfg));
-    ESP_ERROR_CHECK(uart_set_pin(PROTO_UART_NUM, UART_TX_PIN, UART_RX_PIN,
+    /* UART0 default pins (TX=1, RX=3) — no set_pin needed */
-                                 UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
     ESP_ERROR_CHECK(uart_driver_install(PROTO_UART_NUM,
                                         PROTO_RX_BUF_SIZE, PROTO_TX_BUF_SIZE,
                                         0, NULL, 0));
@@ -39,8 +40,8 @@ void uart_handler_init(void)
     tx_mutex = xSemaphoreCreateMutex();
     assert(tx_mutex);
 
-    ESP_LOGI(TAG, "UART%d ready (TX=%d RX=%d @ %d baud)",
+    ESP_LOGI(TAG, "UART%d ready (USB bridge @ %d baud)",
-             PROTO_UART_NUM, UART_TX_PIN, UART_RX_PIN, PROTO_BAUD_RATE);
+             PROTO_UART_NUM, PROTO_BAUD_RATE);
 }
 
 char *uart_read_line(void)

firmware/sdkconfig.defaults

@@ -5,7 +5,6 @@ CONFIG_BT_CLASSIC_ENABLED=y
 CONFIG_BT_BLE_ENABLED=y
 CONFIG_BT_A2DP_ENABLE=n
 CONFIG_BT_SPP_ENABLED=y
-CONFIG_BT_SSP_ENABLED=y
 
 # GAP & GATTS
 CONFIG_BT_GATTS_ENABLE=y
@@ -14,22 +13,19 @@ CONFIG_BT_GATTC_ENABLE=n
 # Bluetooth controller
 CONFIG_BTDM_CTRL_MODE_BTDM=y
 
-# UART
+# UART — disable ESP-IDF console so our protocol handler owns UART0
-CONFIG_ESP_CONSOLE_UART_NUM=0
+CONFIG_ESP_CONSOLE_NONE=y
 
 # Stack sizes (Bluetooth needs generous stacks)
 CONFIG_BT_BTU_TASK_STACK_SIZE=8192
 CONFIG_BTDM_CTRL_HCI_MODE_VHCI=y
 
-# NVS (for bonding storage)
-CONFIG_NVS_ENABLED=y
-
 # Logging — keep it reasonable
 CONFIG_LOG_DEFAULT_LEVEL_INFO=y
 CONFIG_LOG_MAXIMUM_LEVEL_DEBUG=y
 
-# Partition table
+# Partition table — large (1.5MB app) needed for dual-mode BT stack
-CONFIG_PARTITION_TABLE_SINGLE_APP=y
+CONFIG_PARTITION_TABLE_SINGLE_APP_LARGE=y
 
 # FreeRTOS
 CONFIG_FREERTOS_HZ=1000