User's Guide

MP280B User’s Guide
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1. General Information
The MP280B module works in transparent transmission mode. After the module is
powered on, it will be broadcast automatically. The mobile phone that has opened a specific
APP will scan and dock it. After successful, it can be monitored by the BLE protocol. In the
transparent transmission mode, the user CPU can perform two-way communication through
the module's universal serial port and mobile device, and the user can also manage and
control certain communication parameters through a specific serial port AT command. The
specific meaning of user data is defined by the upper application. The mobile device can
write to the module through the APP, and the written data will be sent to the user's CPU
through the serial port. After the module receives the data packet from the user CPU serial
port, it will automatically forward it to the mobile device. For development in this mode, the
user must be responsible for the code design of the main CPU and the smart mobile device
side APP code design.
1.1 Main Features
⚫ Easy to use, without any Bluetooth protocol stack application experience;
⚫ The user interface uses a universal serial port design, full-duplex two-way
communication, the minimum baud rate supports 4800bps;
⚫ The default 30ms connection interval, fast connection, enhance the compatibility
stability of Android phones;
⚫ Support the AT command software reset module to obtain the MAC address;
⚫ Support AT command to adjust the Bluetooth connection interval and control
different forwarding rates (dynamic power consumption adjustment);
⚫ The serial port packet length, can be any length below 200byte (including 200) (large
package automatic distribution);
⚫ High-speed transparent transmission, up to 4K / S, stable operation in 2.5K / S ~
2.8K / S;
⚫ Support the mobile device APP to modify the module name, save power, save the
serial port baud rate, product identification code, custom broadcast content, broadcast
cycle, and save power;