Serial port bluetooth module (Master/Slave)
This module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connections.
The Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband. It uses CSR Bluecore 04-External single chip Bluetooth system with CMOS technology and with AFH(Adaptive Frequency Hopping Feature). It has a footprint as small as 12.7mmx27mm. Hopefully it will simplify your overall design/development cycle.
- Typical -80dBm sensitivity
- Up to +4dBm RF transmit power
- Low Power 1.8V Operation ,1.8 to 3.6V I/O
- PIO control
- UART interface with programmable baud rate
- Integrated antenna
- Edge connector
- Default Baud rate: 38400, Data bits:8, Stop bit:1,Parity:No parity, Data control: yes. Supported baud rate:
- Use CTS and RTS to control data stream.
- Given a rising pulse in PIO0, device will be disconnected.
- Status instruction port PIO1: low-disconnected, high-connected;
- PIO10 and PIO11 can be connected to red and blue LED separately. When master and slave are paired, red
and blue led blinks 1time/2s in interval. While disconnected only blue led blinks 2times/s.
- Auto-connects to the last device on power as default.
- Permits pairing device to connect as default.
- Auto-pairing PINCODE:”0000” as default
- Auto-reconnect in 30 min when disconnected as a result of beyond the range of connection.
- Remote controller
- Wireless communication
- While using with Seeeduino / Arduino, set the operation voltage to 5V. Else use a proper logic level converter.
- While using with UartSBee, set the operation voltage to 5V
- Command to change baud rate is persistent even after reset. Hence remember the baud rate for next use.
|PIO11||34||Bi-Direction||Programmable input/output line|
|PIO10||33||Bi-Direction||Programmable input/output line|
|PIO9||32||Bi-Direction||Programmable input/output line|
|PIO8||31||Bi-Direction||Programmable input/output line|
|PIO7||30||Bi-Direction||Programmable input/output line|
|PIO6||29||Bi-Direction||Programmable input/output line|
|PIO5||28||Bi-Direction||Programmable input/output line|
|PIO4||27||Bi-Direction||Programmable input/output line|
|PIO3||26||Bi-Direction||Programmable input/output line|
|PIO32||25||Bi-Direction||Programmable input/output line|
|PIO1||24||Bi-Direction TX EN||Programmable input/output line, control output for PA(if fitted)|
|PIO0||23||Bi-Direction RX EN||Programmable input/output line, control output for LNA(if fitted)|
|SPI_CLK||19||CMOS input with weak internal pull-down||Serial peripheral interface clock|
|SPI_MISO||18||CMOS input with weak internal pull-down||Serial peripheral interface data Output|
|SPI_MOSI||17||CMOS input with weak internal pull-down||Serial peripheral interface data input|
|SPI_CSB||16||CMOS input with weak internal pull-up||Chip select for serial peripheral interface,active low|
|3.3VCC||12||3.3V||Integrated 3.3V(+)supply with on-chip linear regulator output within 3.15-3.3V|
|RESETB||11||CMOS input with weak internal pull-up||Reset if low. input debouncde so must be low for>5MS to cause a reset|
|AIO1||10||Bi-Direction||Programmable input/output line|
|AIO0||9||Bi-Direction||Programmable input/output line|
|PCM_SYNC||8||Bi-Direction||Synchronous PCM data strobe|
|PCM_IN||7||CMOS Input||Synchronous PCM data input|
|PCM_OUT||6||CMOS output||Synchronous PCM data output|
|PCM_CLK||5||Bi-Direction||Synchronous PCM data clock|
|UART_RTS||4||CMOS output tri-stable with weak internal pull-up||UART request to send, active low|
|UART_CTS||3||CMOS input with weak internal pull-down||UART Data input|
|UART_RX||2||CMOS output,tri-stable with weak internal pull-down||UART Data input|
|UART_TX||1||CMOS output,tri-stable with weak internal pull-up||UART Data output|
Working Sketch Map
Commands to change default configuration
1. Set working MODE
|\r\n+STWMOD=0\r\n||Set device working mode as client (slave). Save and Rest.|
|\r\n+STWMOD=1\r\n||Set device working mode as server (master). Save and Rest.|
Note: \r\n is necessary for operation and the value of are 0x0D 0x0A in Hex. \r and \n represent carriage-return and line-feed(or next line),
|\r\n+STBD=115200\r\n||Set baudrate 115200. Save and Rest.|
|Supported baudrate: 9600, 19200,38400,57600,115200,230400,460800.|
3. Set Device NAME
|\r\n+STNA=abcdefg||Set device name as “abcdefg”. Save and Rest.|
4. Auto-connect the last paired device on power
|\r\n+STAUTO=0\r\n||Auto-connect forbidden. Save and Rest.|
|\r\n+STAUTO=1\r\n||Permit Auto-connect. Save and Rest.|
5. Permit Paired device to connect me
|\r\n+STOAUT=0\r\n||Forbidden. Save and Rest.|
|\r\n+STOAUT=1\r\n||Permit. Save and Rest.|
6. Set PINCODE
|\r\n +STPIN=2222\r\n||Set pincode “2222”, Save and Rest.|
7. Delete PINCODE(input PINCODE by MCU)
|\r\n+DLPIN\r\n||Delete pincode. Save and Rest.|
8. Read local ADDRESS CODE
|\r\n+RTADDR\r\n||Return address of the device.|
9. Auto-reconnecting when master device is beyond the valid range (slave device will auto-reconnect in 30 min when it is beyond the valid range)
Commands for Normal Operation:
|\r\n+INQ=0\r\n||Disable been inquired|
|\r\n+INQ=1\r\n||Enable been inquired|
When +INQ=1 command is successful, the red and green LEDS blink alternatively.
2. Bluetooth module returns inquiring result
|\r\n+RTINQ=aa,bb,cc,dd,ee,ff;name\r\n||Serial Bluetooth device with the address “aa,bb,cc,dd,ee,ff” and the name “name” is inquired|
3. Connect device
|\r\n+CONN=aa,bb,cc,dd,ee,ff\r\n||Connect to a device with address of "aa,bb,cc,dd,ee,ff”|
4. Bluetooth module requests inputting PINCODE
5. Input PINCODE
|Example: RTPIN=0000||Input PINCODE which is four zero|
6. Disconnect device Pulling PIO0 high will disconnect current working Bluetooth device.
7. Return status \r\n+BTSTA:xx\r\n
- 0 - Initializing
- 1 - Ready
- 2 - Inquiring
- 3 - Connecting
- 4 - Connected
(Note: This is not a command, but the information returned from the module after every command)
- How to set PC connect with Serial Bluetooth Grove
- Set up connections between two Bluetooth modules step by step
Please list your question here:
How to buy
Click here to buy: Serial port bluetooth module (Master/Slave)
Links to external webpages which provide more application ideas, documents/datasheet or software libraries
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