Datasheet

ATCommand
The ATCommand example allows you to execute AT commands from your sketch, and see the results in the Serial Monitor. This can be useful
for debugging, or just testing different commands out to see how they work in the real world. It's a good one to start with!
Opening the Sketch
To open the ATCommand sketch, click on the File > Examples > Adafruit_BluefruitLE_nRF51 folder in the Arduino IDE and select atcommand:
This will open up a new instance of the example in the IDE, as shown below:
Configuration
Check the Configuration! page earlier to set up the sketch for Software/Hardware UART or Software/Hardware SPI. The default is hardware SPI
If using software or hardware Serial UART:
This tutorial does not need to use the MODE pin, make sure you have the mode switch in CMD mode if you do not configure & connect a
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