Minimum BLE Power Level?

[mike6789]

Hello,

I am using nimBLE stack and am able to reduce the advertising TX power level with

Code: Select all

esp_ble_tx_power_set(ESP_BLE_PWR_TYPE_ADV, ESP_PWR_LVL_N12);

However, I have a desire to reduce it further than -12dBm... I have tried everything but cannot get the HW to accept it. Is there a hard limit on the minimum TX power level? How can I reduce it further via the API?

Thanks,
Mike