Datasheet

Bluefruit LE SPI Friend

If you have a stand-alone module, you have a bit of flexibility with wiring however we

strongly recommend Hardware SPI, CS = 8, IRQ = 7, RST = 4

You can use this with just about any microcontroller with 5 or 6 pins

Bluefruit LE UART Friend or Flora BLE

If you have a stand-alone UART module you have some flexibility with wiring. However

we suggest hardware UART if possible. You will likely need to use the flow control CTS

pin if you are not using hardware UART. There's also a MODE pin

You can use this with just about any microcontroller with at least 3 pins, but best used

with a Hardware Serial/UART capable chip!

Configure the Pins Used

You'll want to check the Bluefruit Config to set up the pins you'll be using for UART or SPI

Each example sketch has a secondary tab with configuration details. You'll want to edit and save the sketch to your own documents folder once

set up.

https://learn.adafruit.com/introducing-the-adafruit-bluefruit-le-uart-

friend

Page 26 of 115