RF-Star EFR32BG22, Manual

Page: 54 / 94

EFR32BG22
www.szrfstar.com V1.6 - Jun., 2022
Shenzhen RF-star Technology Co., Ltd.
Page 53 of 93
Take effect after setting, can be saved after power off (Supports the use under multi-connections,
but the function of saving after power off is only valid for the first connected device).
•
Master Role Reads the Specified UUID Data
AT+READ_UUID=
Function Read the specified channel data.
Only effective in master mode and master-slave mode.
Example AT+READ_UUID=1,8
Return Value OK
Remark
Parameter 1 : The connection handle value, can be obtained by "AT+CNT_LIST".
Parameter 2 : The serial number is scanned and printed by the serial port by "AT+UUID_SCAN".
This parameter sets the channel to be selected when the master reads data (channels with Read
attribute).
•
Send Data by AT Command
AT+SEND=?
Function Query the parameter range of this command.
Example AT+SEND=?
Return Value
AT+SEND=[1~8],[1~3328],<1~5000>
OK
Remark
Parameter 1 : Connection handle value (range: 1~8), can be obtained by "AT+CNT_LIST".
Parameter 2 : Length of data sent (range: 1 byte ~ 3328 bytes).
Parameter 3 : The input timeout time during sending data (range: 1 ms ~ 5000 ms. 500 ms is by
default).
AT+SEND=
Function The master role sends data in AT command mode.
Example AT+SEND=1,10,1000
Return Value OK
INPUT_BLE_DATA:10
Remark The example above shows that the connection handle value is 1, the data length is 10 bytes, and
the input timeout time is 1000 ms.
If the sending data with the specified length is entered within the set valid time, it will return OK
when the specified length is reached. If the set timeout time is up but the specified input length is