Ebyte E104-BT5011A, User Manual

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，成都亿佰特电子科技有限公司
4
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
2.2.1 Response of distance to data transmission rate
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.
2.2.2 The master data sending rate is lower than the slave data sending rate
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.
2.2.3 IOS device can not obtain the solution of module MAC address
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.