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Set ble tx power

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This commit is contained in:
J. Nick Koston
2025-08-28 14:41:18 -05:00
parent a92a08c2de
commit 635cb08e63
3 changed files with 175 additions and 4 deletions
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108
esphome/components/esp32_ble/ble.cpp
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@@ -212,6 +212,15 @@ bool ESP32BLE::ble_setup_() {
return false;
}
// Set TX power for all BLE operations (advertising, scanning, connections)
err = esp_ble_tx_power_set(ESP_BLE_PWR_TYPE_DEFAULT, this->tx_power_);
if (err != ESP_OK) {
ESP_LOGW(TAG, "esp_ble_tx_power_set failed: %s", esp_err_to_name(err));
// Continue anyway as this is not critical
} else {
ESP_LOGD(TAG, "BLE TX power set to level %d", this->tx_power_);
}
// BLE takes some time to be fully set up, 200ms should be more than enough
delay(200); // NOLINT
@@ -520,11 +529,106 @@ void ESP32BLE::dump_config() {
io_capability_s = "invalid";
break;
}
// Convert TX power level to dBm for display
int tx_power_dbm = 0;
#if defined(CONFIG_IDF_TARGET_ESP32)
// ESP32 classic power levels (0-7)
switch (this->tx_power_) {
case 0:
tx_power_dbm = -12;
break; // ESP_PWR_LVL_N12
case 1:
tx_power_dbm = -9;
break; // ESP_PWR_LVL_N9
case 2:
tx_power_dbm = -6;
break; // ESP_PWR_LVL_N6
case 3:
tx_power_dbm = -3;
break; // ESP_PWR_LVL_N3
case 4:
tx_power_dbm = 0;
break; // ESP_PWR_LVL_N0
case 5:
tx_power_dbm = 3;
break; // ESP_PWR_LVL_P3
case 6:
tx_power_dbm = 6;
break; // ESP_PWR_LVL_P6
case 7:
tx_power_dbm = 9;
break; // ESP_PWR_LVL_P9
default:
tx_power_dbm = 0;
break;
}
#elif defined(CONFIG_IDF_TARGET_ESP32C2) || defined(CONFIG_IDF_TARGET_ESP32C3) || \
defined(CONFIG_IDF_TARGET_ESP32C5) || defined(CONFIG_IDF_TARGET_ESP32C6) || defined(CONFIG_IDF_TARGET_ESP32H2) || \
defined(CONFIG_IDF_TARGET_ESP32S3)
// Extended power levels for C2/C3/C5/C6/H2/S3 (0-15)
switch (this->tx_power_) {
case 0:
tx_power_dbm = -24;
break; // ESP_PWR_LVL_N24
case 1:
tx_power_dbm = -21;
break; // ESP_PWR_LVL_N21
case 2:
tx_power_dbm = -18;
break; // ESP_PWR_LVL_N18
case 3:
tx_power_dbm = -15;
break; // ESP_PWR_LVL_N15
case 4:
tx_power_dbm = -12;
break; // ESP_PWR_LVL_N12
case 5:
tx_power_dbm = -9;
break; // ESP_PWR_LVL_N9
case 6:
tx_power_dbm = -6;
break; // ESP_PWR_LVL_N6
case 7:
tx_power_dbm = -3;
break; // ESP_PWR_LVL_N3
case 8:
tx_power_dbm = 0;
break; // ESP_PWR_LVL_N0
case 9:
tx_power_dbm = 3;
break; // ESP_PWR_LVL_P3
case 10:
tx_power_dbm = 6;
break; // ESP_PWR_LVL_P6
case 11:
tx_power_dbm = 9;
break; // ESP_PWR_LVL_P9
case 12:
tx_power_dbm = 12;
break; // ESP_PWR_LVL_P12
case 13:
tx_power_dbm = 15;
break; // ESP_PWR_LVL_P15
case 14:
tx_power_dbm = 18;
break; // ESP_PWR_LVL_P18
case 15:
tx_power_dbm = 20;
break; // ESP_PWR_LVL_P20
default:
tx_power_dbm = 0;
break;
}
#else
// Unknown variant
tx_power_dbm = 0;
#endif
ESP_LOGCONFIG(TAG,
"BLE:\n"
" MAC address: %s\n"
" IO Capability: %s",
format_mac_address_pretty(mac_address).c_str(), io_capability_s);
" IO Capability: %s\n"
" TX Power: %d dBm",
format_mac_address_pretty(mac_address).c_str(), io_capability_s, tx_power_dbm);
} else {
ESP_LOGCONFIG(TAG, "Bluetooth stack is not enabled");
}