User's Manual

5. Product Function and Test Description
BLE slave mode support.
●Default setting:
Operation Mode: transparent transmission mode default. For using the AT
command please switch to the command mode;
UART parameter: 9600, 8 bit data, no parity bit , 1 bit for stop;
BLE name: BleSerialPort;
Broadcast interval: “80, 80”, max=50ms, min=50ms;
Connect interval: “36,24,2,100”, max=36, min=24, latency=2,
timeout=300(max=45ms,min=30ms,latency=2,timeout=1000ms).
●UART ports could be enabled to switch operation status and sleeping status.
●AT command mode and transparent transmission mode could be swithed by
using command.
●AT command for parameter configuration is available.
●At 0dBm Tx power, connecting distance reaches 40m in open area.
●Each frame can packet up to 20 bytes data.
●Sleeping current: refer to chapter 10
●Supply voltage: 1.55~3.5V, 3.0 V is recommended
●Dimension: 18mm*12mm*1.7mm
●Applications:
BLE health products, Wearable devices, Smart home, BLE toys, Lighting control,
Bluetooth to serial products.
6. UUID
Slave service UUID: 0xFFB0
Eigenvalue UUID: 0xFFB1 Properties: Write Notify
Eigenvalue UUID: 0xFFB2 Properties: Write Notify
7. Communication Interface for Module and MCU
7.1 Asynchronous Serial Communication
BLE module communicate with MCU by serial port (UART).
Default port parameter: baud rate 9600, 8 data, 1 stop, no parity.
7.2 Packet Format
Transparent transmission mode: BLE module forwards the data from MCU to APP
without change. And the same as data from APP to MCU.
Instruction mode: Module can be configured by AT command by either APP or PC
UART.
7.3 Operation Mode Setting
Switching between AT command mode and transparent transmission mode:
Power on default transparent transmission mode. Send“+++” then return“AT+ok
Mode=AT Mode\r\n”, the module turns into AT command mode and AT command
are available for setting and reading.
Send“AT+exit\r\n”then return“AT+ok Mode=Normal\r\n”, the module turns back to
transparent transmission mode and data will be transparently transmitted directly.
Notie: Don’t insert any other characters inside “+++”.