We’re now ready to dive in and see how the RN-52 can be configured.
Configure the Module
Now that you can actually power up the RN-52 and send it into command
mode, let’s talk about changing the settings, and thus the behavior, of the
Bluetooth module.
1. Make sure the CMD Mode switch is in the OFF position (GPIO9 NOT
shorted to GND).
2. Turn on your RN-52.
3. The two status LEDs should both stay solid for about 1 second and
then begin flashing alternately.
4. Your device is now ready to make a connection. Rather than connect
over Bluetooth, the connection will be made over the serial UART.
5. Open a terminal window on the port your RN-52 has been assigned
(115200 Baud, 8,N,1).
6. With the terminal open and connected to the RN-52, flip the CMD
Mode switch to the ON position (GPIO9 shorted to GND). You should
now see
CMD
appear in your terminal.
You are now in Command Mode!
To exit command mode, simply flip the switch back to the OFF position.
You will see
END
appear in the window.
*Note:
The RN-52 can enter and exit CMD mode
while
streaming music.
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