BLE UART(support M5Stack Fire only)

Function Description

Establish BT connection and enable BT passthrough service.

Init ble uart name Initialize settings, configure BT device name.

BLE UART Writre Send data using BLE UART.

BLE UART remain cache Check the number of bytes of BLE UART data.

BLE UART read all Read all data in BLE UART cache.

BLE UART read characters Read n data in BLE UART cache.


Establish BT passthrough connection and send on / off control LED.

Blynk(support M5Stack Fire only)

Connect with Blynk server, use BLE to connect Blynk App, and realize M5Stack Fire control on mobilephone

Init blynk name token type BLE Initialize Blynk configuration, input device name and token of App.

Virtual write number data Write data to Virtual port number

Notify message Send system message notification to App

Tweet message Send message notifications to twitter client

On event write get number message Receive the data of the specified virtual port to be written from the app, if not specified, set to V*

On event read get number Read the virtual port number specified by the App

On event Callback function when BT is connected / disconnected


Use Blynk to control the color and brightness of the RGB light bar of M5StackFire and display it on the screen in real-time

1.Download the blynk App and register your account. You can choose to use the official blynk server or build your own server. Here we provide a free server( for you to test.

2.Use the email to register the blynk account, and log in with the account after successful registration.

3.Create a new project, select ESP32 Dev board, select BLE mode, and record the Auth Token.

4.Follow the steps below to add components, BLE connections are required.

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