Precautions For Module Application; Response Of Distance To Data Transmission Rate; The Master Data Sending Rate Is Lower Than The Slave Data Sending Rate; Ios Device Can Not Obtain The Solution Of Module Mac Address - Ebyte E104-BT5011A User Manual

Rf52811 ble5.1 low power ble to serial module

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Need to explain. In practical applications, the MTU value of different devices will be different. For example, the

MTU of iPhone is 185 bytes, and the user cannot change it.

2.2 Precautions for Module Application

The module uses a ceramic antenna. Compared with the PCB antenna, the ble wireless signal has a weaker

transmitting and receiving ability. As the distance increases, the data speed decreases.

Because the slave sends data using the notification method to send data, the data sending rate is faster, while the

master sends data using the write response method, and the data sending rate is slower.

Due to IOS system limitation, APP cannot obtain the MAC address of the module. The module provides a solution:

add a MAC address field in the broadcast packet (only BT5011A). For details, please refer to "6.1.2 Slave".

2.2.4 Precautions for connecting Ebyte ble modules with modules from other

manufacturers

When the Ebyte ble module is used as a slave, it does not refuse connections from other manufacturers' masters. But

the communication needs to communicate in the way shown in [5.7UUID description].

When the Ebyte ble module is used as the master, there are two precautions for connecting to other manufacturers'

modules:

1. The Ble broadcast content must include the service UUID, and the UUID is consistent with the service UUID set

by the master;

2. Services and characteristics, and characteristic attributes must be consistent; receiving operations must be

consistent. Refer to【5.7UUID description】.

3. The ble connection process of other manufacturers has no authentication binding process.

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