RF-Star EFR32BG22, Manual

Page: 59 / 94

EFR32BG22
www.szrfstar.com V1.6 - Jun., 2022
Shenzhen RF-star Technology Co., Ltd.
Page 58 of 93
Can be saved after power off.
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Serial Port Frame Size and Timeout Time
AT+PACK=?
Function Query the parameter range of this command.
Example AT+PACK=?
Return Value
AT+PACK=<0~2048>,<1~1000>
OK
Remark
Parameter 1 : Serial port frame receiving size, in byte (Range: 0 byte ~ 1024 bytes), 0 byte is by
default. When set to 0, the module will automatically adjust the frame size according to the current
baud rate to meet high-speed transparent transmission.
Parameter 2 : Serial port frame receiving timeout time, in ms. Range: 1 ms ~ 1000 ms. 50 ms is by
default. The parameter is used to judge the end of the frame of the serial port input data stream.
When the serial port data cut-off time exceeds the setting, the module will judge that the current
serial port input data frame has been completed, and will forward the frame data after the timeout
ends. When parameter 1 is set to a value non-zero, after the serial port input data length reaches
the set value of parameter 1, the module will not make a frame end timeout judgment and will
immediately forward the received frame data.
AT+PACK?
Function Query the receiving frame size and the timeout time.
Example AT+PACK?
Return Value
AT+PACK= 0,50
OK
Remark
The current timeout time is 50 ms. If the returned frame receiving size is 0, it means that the module
will automatically adjust the frame receiving size according to the current baud rate.
AT+PACK=
Function Set the receiving frame size and the timeout time.
Example AT+PACK=250,100
Return Value OK
Remark
Set the receiving frame size to 250 bytes, and the receiving timeout time to 100 ms.
Take effect immediately after setting, can be saved after power off.