#Arduino bluetooth 4.2 serial
#Arduino bluetooth 4.2 code

Replace these lines with the following code: In the 'BLEDevice' sample sketch, find the following lines of code: Select the 'BLEDevice' example and click 'Open'. In the 'ESP32' folder, select the 'Bluetooth' folder. Scroll down and select the 'ESP32' folder. In the Arduino IDE, go to the 'File' menu and select 'Examples'.

#Arduino bluetooth 4.2 serial

Select the serial port that corresponds to your ESP32-S3. Go to the 'Tools' menu and select the 'Port' option. In the Arduino IDE, go to the 'Tools' menu and select the 'Board' option. To set Bluetooth to high power mode on the ESP32-S3, try this:Ĭonnect the ESP32-S3 to your computer and open the Arduino IDE. I also found this in the datasheet at the Bluetooth section in Features:

I don't understand why the ESP32 S3 is marketed with long range if there is no help in this direction

But now I'm a bit confused, do I need to set negative dBm power for longer range?Īlso, I still cannot find any examples about 2M or Coded PHY. I see this in the LightBlue or any other Bluetooth app on the iOS or OS X. Note that the esp_ble_tx_power_set function is only available in version 5.2.0 or later of the BLE library.Īs I mentioned, I have tried this and the TX Power is set to +9 by default. The power level can be one of the following values:įor example, to set the power level to -6 dBm, you could use the following code: To set the BLE power on an ESP32, you must use the esp_ble_tx_power_set function from the BLE library and pass the desired power level as a parameter. Side note: I have another totally different pcb with S3, I tested the range between these 2 different S3 boards (one server, one client) and the range is the same as with the iPhone 12 Pro.Īny help or guidance is much much appreciated, thank you!

#Arduino bluetooth 4.2 code

Is there any way I can adjust my code to have at least 15m or so of range? Started reading about 1M, 2M and Coded PHY (as far as I'm aware, S3 supports all 3 of these) - from this I understood that the default BLE 5 layer of S3 is 1M PHY? Meaning up to 50m or so, but realistically same as BLE 4. I started digging into it, the TX power seems to be +9dBm by default (as shown in LightBlue app on iOS, comparing to +4dBm shown on BLE 4.2), I also tried setting ESP_PWR_LVL_P9 for +9dBm range just in case and there is no effect. Rewritten the code to fit ESP32 BLE and got to testing - to my horrifying surprise, the range is identical to my BLE 4.2 board, somewhere around 5-8 meters, maybe 10 in open field. I have totally redesigned a previous existing pcb and updated it to ESP32-S3 in order to benefit of 2 main things: OTA updates (wifi) and long range bluetooth (as I was using hm-10 module BLE 4.2 & arduino before) I'm a bit lost regarding the BLE 5 range of the S3, any sort of feedback is very much appreciated.