Hi-Link HLK-B20 Manuale d'uso - Pagina 8

Sfoglia online o scarica il pdf Manuale d'uso per Unità di controllo Hi-Link HLK-B20. Hi-Link HLK-B20 17. Ble 4.2 wireless module

RESET

Notes: Tes=100ms, Trst=6s

6. Led light indication meaning

The status of the led connection module's P02 pin, corresponding to the sta led on the test board:

* Double flash: Bluetooth is not connected, and is in transparent mode

* Triple flash: AT command mode

* Long extinction or fast flash: Bluetooth is connected, it will flash quickly when there is transparent

data transmission

The module configuration is mainly configured through the serial port AT command.To configure

parameters through the serial AT command, you need to let the module enter the AT command mode

first.The serial port configuration tool HLK-B20_CONFIG, that configures the module through the AT

command mode, through the parameters of each configuration combinations, provides a simple and

convenient configuration process.

In AT mode, system parameters can be configured through the AT command of

the serial port. The format of the instruction is as follows: at+[command]=[value]\r

Different return values of the module will be returned depending on the different

command.

Example: "at+ble_name=blename\r" sets the module broadcast address to blename.

Example: "at+ver=?\r" queries the module program version number.

HLK-B20

Shenzhen Hi-Link Electronic Co., Ltd.

>Tes

<Trst

Figure 6. RST Exit transparent mode

AT Command

Manual

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