Bluetooth interfacing ?

[bianchi77]

Mates,

Anyone of you has an experience with this device ?


What's the speed for this device ?

How to send data to it ? Putty ?

Thanks

 

[anilrock87]

HI,

Product Description:
Industrial serial port bluetooth, Drop-in replacement for wired serial connections, transparent usage. You can use it
simply for a serial port replacement to establish connection between MCU and GPS, PC to your embedded project and etc.
Computer and peripheral devices
GPS receiver
Industrial control
MCU projects
Default serail port setting : 9600 1
Pairing code : 1234
Running in slave role: Pair with BT dongle and master module

Usage
Coupled Mode: Two modules will establish communication automatically when powered.
PC hosted mode: Pair the module with bluetooth dongle directly as virtual serial.

Bluetooth protocal : Bluetooth Specification v2.0+EDR
Frequency : 2.4GHz ISM band
Modulation : GFSK(Gaussian Frequency Shift Keying)
Emission power : <=4dBm, Class 2
Sensitivity : <=-84dBm at 0.1% BER
Speed : Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps
Security : Authentication and encryption
Profiles : Bluetooth serial port

CSR chip : Bluetooth v2.0
Wave band : 2.4GHz-2.8GHz, ISM Band
Protocol : Bluetooth V2.0
Power Class : (+6dbm)
Reception sensitivity: -85dBm
Voltage : 3.3 (2.7V-4.2V)
Current : Paring - 35mA, Connected - 8mA
Temperature : -40~ +105 Degrees Celsius
User defined Baud rate : 4800, 9600, 19200, 38400, 57600, 115200, 230400,460800,921600 ,1382400.
Dimension : 26.9mm*13mm*2.2mm

Pin definition :
* PIO8 connects with LED cathodea with 470ohm series resistor in between. LED NEGATIVE connects to ground. It is used
to indicate the module state. After powered on, flashing intervals differ in different states.
* PIO9 is used to control LED indicating paring. It will be steady on when paring is successful.
* PIO11, module state switching pin. HIGH -> response to AT command; LOW or floating -> regular work status.
* With build-in reset circuit, reset is completed automatically after powered on.
* Steps to set to MASTER:
* Set PIO11 HIGH with a 10K resistor in between.
* Power on, module comes into AT Command Response Status
* Open HyperTerminal or other serial tool, set the baud rate 38400, 8 data bits, 1 stop bit, no parity bit, no Flow

Control
* Via serial port, send characters "AT + ROLE = 1 r n",if successful, return "OK r n", where r n is carriage return.
* Set PIO11 LOW, re-power, then in Master state, automatically search for slave module and connect.

 

[dean_winchester]

JY-MCU default BR : 38400
Either works in AT commands or when paired with BT (AT commands don't work).

 

[bianchi77]

JY-MCU default BR : 38400
Either works in AT commands or when paired with BT (AT commands don't work).

any codes example for MCS51 ?
thanks

 

[stevefridel]

Now a days bluetooth wireless technology is latest and popular standard in the communication arena, and it is one of the fastest developed fields in the latest technology. Bluetooth interface connection is used to connect with network for transfer the data and information.

 

[bianchi77]

JY-MCU default BR : 38400
Either works in AT commands or when paired with BT (AT commands don't work).

can I connect it directly to UART on MCS51 ? Tx and Rx ?

 

[anirudha3]

First of all check whether your Module supports the AT command or not....

If yes you can simply communicate with BT module on serial(UART) with default baudrate....

Also needs to check the power On sequence of the Module

 

[bianchi77]

First of all check whether your Module supports the AT command or not....

If yes you can simply communicate with BT module on serial(UART) with default baudrate....

Also needs to check the power On sequence of the Module

any example of the code ? or link for it ?
thanks