One board... several firmwares

Hi !

The first time I bought some UART bluetooth devices, I ordered them on suntekstore.com website. Since these devices seems promising, i ordered a few more on DealExtreme for my job.

I discovered that even these boards seem identical, they had different firmwares.

The suntekstore ones has HC05 firmware, the DealExtreme ones has linvor 1.5 firmware.

The differences between them is mainly the AT command set.

Linvor 1.5 also known as HC06
This firmware offers a very limited set of AT command.
By default the baudrate is 9600 8N1.

For this firmware you have to not send LF or CR character at the end of your AT command.AT programming mode is up when your board is not paired by bluetooth devices. For this firmware, you have to copy/paste AT command since timings is important. You can send about one command per second.

Command	Response	Note
AT	OK	Usefull to check connection and   baudrate
AT+VERSION	Linvor1.5	Get the version of the module
AT+BAUDx	OKyyyy	Set the baudrate : x can take the following values : 1 for 1200 bps  2     2400 bps 3     4800 bps  4     9600 bps  5    19200 bps  6    38400 bps  7    57600 bps  8   115200 bps  9   230400 bps  A   460800 bps  B   921600 bps  C  1382400 bps
AT+NAMEString	OKsetname	Change bluetooth device name : String can be any string you want ! be creative !! (20 characters limited)
AT+PINxxxx	OKsetpin	Set the bluetooth pincode : 1234 by default

And that's it !!! No other AT command.

In the next, post I will provide some links to the HC05 firmware. This one is a bit better than HC06.

Some words about me !

Hi folks,

So, here we go ! My first message on my first blog...

Why this blog ? For whom ?

Since I decided to take a little time for realised few projects I dreamt a long time ago, since no one takes the time to do them for me, I have to do this myself if I want to make it real.

For your information, I'm french, 35 years old, engineer in embedded programming.
Please be indulgent for my English skill.

So !!! The reason why I start that blog is to share some information about CSR bluetooth board. Some of you may have exchange some word on dealextreme forum (nickname Byron76).

I realized that we can do a lot of cool stuff we that device... but it's a bit hard to find some resource and it's hard to get any help to start developing Bluecore4 chip ! Hope this blog we help some of you...

Feel free to encourage me buying me a beer, some electronic gadgets or other stuff by cliking this button. It's not mandatory, don't blame me.

That's all for presentations.