User's Guide

MP280B User’s Guide

5.1 Default broadcast data

After the module is powered on, a default interval of 200ms will be broadcast. The

default is 9 bytes of data:

{

0x00, 0x00, //custom device type code, default is 00 00, can be set by AT

command;

0x00, 0x00, 0x00, 0x00, //four-way PWM current output status (default), or the

acquired value of two ADCs;

0x00, //module power supply percentage, 2.0V = 0%;

0x00, 0x00, //IO configuration, IO output input status, this byte changes in real

time with the current state of IO;

}

5.2 Custom broadcast data

If you use the AT command to customize the broadcast content, the maximum length

is 16 bytes, the specific format is

{

0x00, 0x00, //custom device type code, default is 00 00, can be set by AT

command;

Data [n], //custom broadcast data, n <= 16 ;

}

Note: The total length is 2+n bytes, and the custom broadcast data can be modified by the

AT command and saved after power down. If the custom broadcast data is all 0 (16

bytes), then the custom broadcast is considered not to be used, but the system default

broadcast content is used. To avoid excessive power consumption caused by excessive

broadcast data, you can also set the custom broadcast data to any value of 1 byte.