bleutooth: add ble tx power configuration

zephyr/esp32/include/bt/esp_bt.h

@@ -643,6 +643,13 @@ void esp_wifi_bt_power_domain_on(void);
 */
 void esp_wifi_bt_power_domain_off(void);
 
+/**
+ * @brief Convert Zephyr TX power enum to ESP BT model
+ *
+ * @return ESP BT controller power level
+ */
+esp_power_level_t zephyr_to_esp_ble_power_level(int tx_power);
+
 #ifdef __cplusplus
 }
 #endif

zephyr/esp32/src/bt/esp_bt_adapter.c

@@ -1262,6 +1262,10 @@ esp_err_t esp_bt_controller_enable(esp_bt_mode_t mode)
 
 	btdm_controller_status = ESP_BT_CONTROLLER_STATUS_ENABLED;
 
+	/* set default TX power level */
+	esp_power_level_t level = zephyr_to_esp_ble_power_level(CONFIG_BT_CTLR_TX_PWR_DBM);
+	esp_ble_tx_power_set(ESP_BLE_PWR_TYPE_DEFAULT, level);
+
 	return ESP_OK;
 }
 
@@ -1398,3 +1402,19 @@ static void esp_bt_free(void *mem)
 {
 	esp_bt_free_func(mem);
 }
+
+esp_power_level_t zephyr_to_esp_ble_power_level(int tx_power) {
+	// Map the Zephyr power levels to the closest ESP-IDF levels
+	if (tx_power == 9) return ESP_PWR_LVL_P9;
+	else if (tx_power == 6) return ESP_PWR_LVL_P6;
+	else if (tx_power == 3) return ESP_PWR_LVL_P3;
+	else if (tx_power == 0) return ESP_PWR_LVL_N0;
+	else if (tx_power == -3) return ESP_PWR_LVL_N3;
+	else if (tx_power == -6) return ESP_PWR_LVL_N6;
+	else if (tx_power == -9) return ESP_PWR_LVL_N9;
+	else if (tx_power == -12) return ESP_PWR_LVL_N12;
+
+	LOG_ERR("Invalid TX power level: %d", tx_power);
+
+	return 0xFF;
+}

zephyr/esp32c3/include/bt/esp_bt.h

@@ -240,7 +240,7 @@ typedef void (* esp_bt_hci_tl_callback_t) (void *arg, uint8_t status);
     .hci_tl_funcs = NULL,                                                  \
     .txant_dft = 0,                      \
     .rxant_dft = 0,                      \
-    .txpwr_dft = 8,                    \
+    .txpwr_dft = zephyr_to_esp_ble_power_level(CONFIG_BT_CTLR_TX_PWR_DBM), \
     .cfg_mask = CFG_MASK,                                                  \
     .scan_duplicate_mode = SCAN_DUPLICATE_MODE,                            \
     .scan_duplicate_type = SCAN_DUPLICATE_TYPE_VALUE,                      \
@@ -659,6 +659,13 @@ void esp_wifi_bt_power_domain_off(void);
  */
 esp_bt_sleep_clock_t esp_bt_get_lpclk_src(void);
 
+/**
+ * @brief Convert Zephyr TX power enum to ESP BT model
+ *
+ * @return ESP BT controller power level
+ */
+esp_power_level_t zephyr_to_esp_ble_power_level(int tx_power);
+
 #ifdef __cplusplus
 }
 #endif

zephyr/esp32c3/src/bt/esp_bt_adapter.c

@@ -1566,4 +1566,28 @@ static void * coex_schm_curr_phase_get_wrapper(void)
 #else
 	return NULL;
 #endif
-}
+}
+
+esp_power_level_t zephyr_to_esp_ble_power_level(int tx_power) {
+	// Map the Zephyr power levels to the closest ESP-IDF levels
+	if (tx_power == 21) return ESP_PWR_LVL_P21;
+	else if (tx_power == 18) return ESP_PWR_LVL_P18;
+	else if (tx_power == 15) return ESP_PWR_LVL_P15;
+	else if (tx_power == 12) return ESP_PWR_LVL_P12;
+	else if (tx_power == 9) return ESP_PWR_LVL_P9;
+	else if (tx_power == 6) return ESP_PWR_LVL_P6;
+	else if (tx_power == 3) return ESP_PWR_LVL_P3;
+	else if (tx_power == 0) return ESP_PWR_LVL_N0;
+	else if (tx_power == -3) return ESP_PWR_LVL_N3;
+	else if (tx_power == -6) return ESP_PWR_LVL_N6;
+	else if (tx_power == -9) return ESP_PWR_LVL_N9;
+	else if (tx_power == -12) return ESP_PWR_LVL_N12;
+	else if (tx_power == -15) return ESP_PWR_LVL_N15;
+	else if (tx_power == -18) return ESP_PWR_LVL_N18;
+	else if (tx_power == -21) return ESP_PWR_LVL_N21;
+	else if (tx_power == -24) return ESP_PWR_LVL_N24;
+
+	LOG_ERR("Invalid TX power level: %d", tx_power);
+
+	return ESP_PWR_LVL_INVALID;
+}

zephyr/esp32s3/include/bt/esp_bt.h

@@ -240,7 +240,7 @@ typedef void (* esp_bt_hci_tl_callback_t) (void *arg, uint8_t status);
     .hci_tl_funcs = NULL,                                                  \
     .txant_dft = 0,                      \
     .rxant_dft = 0,                      \
-    .txpwr_dft = 8,                    \
+    .txpwr_dft = zephyr_to_esp_ble_power_level(CONFIG_BT_CTLR_TX_PWR_DBM), \
     .cfg_mask = CFG_MASK,                                                  \
     .scan_duplicate_mode = SCAN_DUPLICATE_MODE,                            \
     .scan_duplicate_type = SCAN_DUPLICATE_TYPE_VALUE,                      \
@@ -659,6 +659,13 @@ void esp_wifi_bt_power_domain_off(void);
  */
 esp_bt_sleep_clock_t esp_bt_get_lpclk_src(void);
 
+/**
+ * @brief Convert Zephyr TX power enum to ESP BT model
+ *
+ * @return ESP BT controller power level
+ */
+esp_power_level_t zephyr_to_esp_ble_power_level(int tx_power);
+
 #ifdef __cplusplus
 }
 #endif

zephyr/esp32s3/src/bt/esp_bt_adapter.c

@@ -1552,3 +1552,27 @@ static void esp_bt_free(void *mem)
 {
 	esp_bt_free_func(mem);
 }
+
+esp_power_level_t zephyr_to_esp_ble_power_level(int tx_power) {
+	// Map the Zephyr power levels to the closest ESP-IDF levels
+	if (tx_power == 21) return ESP_PWR_LVL_P21;
+	else if (tx_power == 18) return ESP_PWR_LVL_P18;
+	else if (tx_power == 15) return ESP_PWR_LVL_P15;
+	else if (tx_power == 12) return ESP_PWR_LVL_P12;
+	else if (tx_power == 9) return ESP_PWR_LVL_P9;
+	else if (tx_power == 6) return ESP_PWR_LVL_P6;
+	else if (tx_power == 3) return ESP_PWR_LVL_P3;
+	else if (tx_power == 0) return ESP_PWR_LVL_N0;
+	else if (tx_power == -3) return ESP_PWR_LVL_N3;
+	else if (tx_power == -6) return ESP_PWR_LVL_N6;
+	else if (tx_power == -9) return ESP_PWR_LVL_N9;
+	else if (tx_power == -12) return ESP_PWR_LVL_N12;
+	else if (tx_power == -15) return ESP_PWR_LVL_N15;
+	else if (tx_power == -18) return ESP_PWR_LVL_N18;
+	else if (tx_power == -21) return ESP_PWR_LVL_N21;
+	else if (tx_power == -24) return ESP_PWR_LVL_N24;
+
+	LOG_ERR("Invalid TX power level: %d", tx_power);
+
+	return ESP_PWR_LVL_INVALID;
+}