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