Whether you know or not, you can use Freematics ONE+ and Freematics ONE with our Android and iOS app named Freematics Controller. Freematics ONE+ has a BLE capable micro-controller ESP32 and Freematics ONE has a BLE module CC2541. Both of them are able to communicate with an Android or iOS mobile device wirelessly via BLE.
Freematics ONE+ and Freematics Controller App
A BLE SPP server is implemented in the Arduino library for Freematics ONE+. The datalogger code has demonstrated use of two APIs (ble_recv_command and ble_send_response) provided to perform BLE SPP communication with app. Follow the steps below to see them working.