Datasheet

And change (if it isnt already) the last line to:

(The Bluefruit Feather has the reset on digital #4 not #6)

Now go back to the main tab atcommand and look for this line of code

Make sure that the second line is uncommented (it should be)

Uploading to the Feather Bluefruit LE

It's pretty easy to upload, first up make sure you have Adafruit Feather M0 selected on the

boards dropdown

// SHARED SPI SETTINGS

// ----------------------------------------------------------------------------------------------

// The following macros declare the pins to use for HW and SW SPI communication.

// SCK, MISO and MOSI should be connected to the HW SPI pins on the Uno when

// using HW SPI. This should be used with nRF51822 based Bluefruit LE modules

// that use SPI (Bluefruit LE SPI Friend).

// ----------------------------------------------------------------------------------------------

#define BLUEFRUIT_SPI_CS 8

#define BLUEFRUIT_SPI_IRQ 7

#define BLUEFRUIT_SPI_RST 6 // Optional but recommended, set to -1 if unused

#define BLUEFRUIT_SPI_RST 4 // Optional but recommended, set to -1 if unused

/* ...hardware SPI, using SCK/MOSI/MISO hardware SPI pins and then user selected CS/IRQ/RST */

Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_CS, BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST

OK now you can upload to the Bluefruit Feather!

If you're using Ubuntu 15.04 or other Linux distributions and run into errors

attempting to upload a program to the board, scroll up to the Ubuntu and Linux

issue fix in the previous section