Overview
SH-H4 is a fully integrated Bluetooth module that complies with Bluetooth 4.0 dual mode protocols(BR/EDR/BLE).It uses TI CC2564 bluetooth chip. It provides several interfaces such as UART, I2C, PCM, AIO, PIO, etc., which can customized different applications.SH-H4 supports SPP, BLE profiles. It integrates MCU, Baseband controller, RF, etc. in a small package, so the designers can have better flexibilities for the product shapes.SH-H4 can be controlled by UART port or other interfaces. Please refer to software design guide for the interfacing protocol.
Feature
- Fully qualified Bluetooth 4.0/3.0/2.1/2.0/1.2/1.1
- Postage stamp sized form factor, 13mm x 27mm x 2mm
- Low power
- Class 1.5 support(high output power)
- The default UART Baud rate is 115.2Kbps and can support from 1200bps up to 921Kbps, UART, I2C , PCM data connection interfaces.
- Embedded Bluetooth stack profiles support(requires no host stack): SPP, HFP/HSP, A2DP, AVRCP, MAP, and all BLE protocols.
- VCC: input power supply 3.3~6V, Prohibit more than 7V
- GND: Ground
- TX: transport
- RX: receive
- State: when bluetooth is connected , output "High level", "no conntected" output "low level"
- en:when module is connected, give a high level to "EN",the module will disconnected.
AT Command
The way to the AT command mode: supply power to the module, it will enter to the AT mode if it needn’t pair. The interval of command is about 1 second.
Default parameter: Baud rate:9600N81
Format:
AT+Command[=Parameter]<CR><LF>
Description:
Command always start with AT+ and end with <CR><LF>.
<CR> means "carriage return" and corresponds to the hexadecimal value 0x0D. <LF> means "line feed" and corresponds to the hexadecimal value 0x0A.
Parameter between [ ] may not exist.
Parameter always start with =if exist.
Example :
AT+BDNAME=? <CR><LF> :Query current device's name.
AT+BDPIN=8888 <CR><LF> :Modify current device's pin code to '8888'.
Command 1 ,
Testing Connection Commands
| Command |
Answer
|
Parameter
|
|
AT
|
OK
|
None
|
Command 2 ,
Query/Set —— Bluetooth Name
Command |
Answer
|
Parameter
|
|
Query:AT+BDNAME=?
|
+BDNAME=[para1]
|
Para1:the name of device
Default:SH-H4
|
|
Set:AT+BDNAME= [para1]
|
+BDNAME=[para1]
|
Example: Send: AT+BDNAME=?
Return: +BDNAME=SH-H4
Send: AT+BDNAME=ABC
Return : +BDNAME=ABC
Command 3, Query module bluetooth address
Command |
Answer
|
Parameter
|
|
AT+BDADDR=?
|
+BDADDR=[MAC]
|
MAC:
Bluetooth address
|
Command 4 ,
Query/Set —— Baud Rate
Command |
Answer
|
Parameter
|
|
Query:AT+BDBAUD=?
|
+BDBAUD=[para1]
|
Para1:
9600
38400
115200
|
|
Set:AT+BDBAUD =[para1]
|
+BDBAUD=[para1]
|
Query device baudrate
Send:AT+BDBAUD=?
Return: +BDBAUD=9600
Modify device baudrate
Send:AT+BDBAUD=115200
Return: +BDBAUD=115200
Command 5 ,
Query/Set ——PIN Code
Command |
Answer
|
Parameter
|
|
Query:AT+BDPIN=?
|
+BDPIN=[para1]
|
Para1 is PIN Code:
Default:0000
|
|
Set:AT+BDPIN= [para1]
|
+BDPIN=[para1]
|
e.g.
Query Pin Code
Send: AT+BDPIN=?
Return: +BDPIN=0000
Setup Pin Code 1234
Send: AT+BDPIN=1234
Return : +BDPIN=1234
