Hi,there, My platform is like this: MCU + ESP32-Wrover works as the server, and a usb dongle as the client. I'm using at command to control and communicate with the ESP32. Using the BTool, I can write to the ESP32 and also get the notification from the esp32. However, after I modified the MTU succes...

The reader chip is the AS3911 from AMS who has been merged by ST. Sorry for response so late, it's been a while not logon to here.

RFID reader with ESP32 and Li-ion management.
Still working on it.