From the get go the on board ESP32 delivers the following functionalities:

• Basic AT Commands
• Wi-Fi AT Commands
• TCP-IP AT Commands
• Bluetooth® Low Energy AT Commands
• MQTT AT Commands
• HTTP AT Commands
• Web server AT Commands

Setting an MQTT client up for instance is a matter of three lines of code, so it simply can not be any easier to use.

  mqtt.begin();    mqtt.userConfig(DEFAULT_LINK_ID, ESP_MQTT_SCHEME_MQTT_OVER_TCP, "BSerial_WIFI/BLE");    delay(1000);    mqtt.connect(DEFAULT_LINK_ID, mqtt_server);    

See, I told you it would be simple to use.

Details

The hardware implementation of this module is similar to that of the Challenger RP2040 WiFi/BLE board but not exactly the same. For instance the BOOT signal that tells the ESP32 to enter serial boot flash mode is connected to the onboard button of the module. It also has its own reset controller locally on the module which ensures that the ESP32 resets at power on and if the power supply drops below a certain voltage level (3.0V).

What is BSerial ?

BSerial is a part of our own concept (BConnect that spans over Bi2C, BSerial and BSpi) of connecting devices together using a small Flexible Flat Cable (FFC) and an FFC connector. It is similar to the Bi2C concept but we have replaced the electrical I2C interface with a asynchronous serial channel instead.