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Gav on WRL-10938 - Bluetooth Modem - BlueSMiRF HID

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Just a heads up. I recently got the ‘HID611’ version of this board, and it needs some changes.

From p3 of the manual it says:“In firmware version 6.10 and higher, the SPP profile is enabled by default” (http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Wireless/Bluetooth/RN-HID-User%20Guide-1.1r.pdf) Which is a bummer since people buy this module specifically to use the firmware as a keyboard, not a serial port.

So you can either set it back to HID mode two ways: 1) using serial ‘$$$’ and entering CMD mode, and send some further commands to change to HID and reboot. This needs to be done each powerup, and is tricky as it’ll only enter CMD mode within a minute of the bluesmirf being powered up. I.e. if you use an arduino, which gets reset, the bluesmirf ignores config requests, and send those strings to your keyboard instead, which is either messy or disastrous depending on your application. 2) Wire from GPIO11 to high. This forced HID on startup, and you don’t need to do any software stuff. Downside is that the board has no breakout for it and you need to solder the tiny wire: http://imgur.com/wLfY7T7

Hope this helps, Gav.


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