BBGW+RN52 Integration Stuff

Serial Port Stuff

Signals

(needs work...)

RN52 Stuff

  • gpio:

    • gpio 7 low configures for 9600b instead of 115200b...

    • gpio 9 low configures cmd mode rather than data mode

  • audio

    • can drive 16 ohm speakers/headsets...

    • also has mic in...

    • TODO: buy audio jack for headset

  • digital data:

    • pcm via i2s...

    • TODO: study i2s ...

  • wiring

    • solder straight male headers to export pins !!!

  • positioning

    • position antenna away from the board!

  • power:

    • test bb's 3.3v quality and capacity

    • bring 3.3v to both pwr_en and 3.3v pins

  • cmd vs data mode:

    • default is data mode

    • pull gpio 9 low for cmd mode

  • first time:

    • leave in data mode (gpio 9 NOT shorted to ground)

    • connect 3.3v line and pwr_en line

    • open terminal window @ 115200b

    • enter cmd mode by shorting gpio 9 to ground

    • result should be "CMD" on terminal

      • use terminal settings to just CR not CRLF

      • "D": dump settings