User Manual

Arduino

You can use the AirLift with Arduino. Unlike CircuitPython, it work work with just about any Arduino chip, even a classic

Arduino UNO. However, if you want to use libraries like ArduinoJSON or add sensors and SD card, you'll really want an

ATSAMD21 (Cortex M0) or ATSAMD51 (Cortex M4), both of which have

plenty

or RAM

Arduino Microcontroller Pin Definitions

Because each Feather uses a different processor, you'll need to include the following pin definitions to your code

depending on which board you are using:

Feather M0, M4, 32u4, or NRF52840

Feather 328P

Feather NRF52832

Note: These pin definitions leave the the ESP32's GPIO0 pin undefined (-1). If you wish to use this pin - solder the pad

on the bottom of the FeatherWing and set #define ESP32_GPIO0 to the correct pin for your microcontroller.

Library Install

We're using a variant of the Arduino WiFiNINA library, which is amazing and written by the Arduino team! The official

WiFi101 library won't work because it doesn't support the ability to change the pins.

So! We made a fork that you can install.

Click here to download the library:

https://adafru.it/Evm

#define SPIWIFI SPI // The SPI port

#define SPIWIFI_SS 13 // Chip select pin

#define ESP32_RESETN 12 // Reset pin

#define SPIWIFI_ACK 11 // a.k.a BUSY or READY pin

#define ESP32_GPIO0 10

#define SPIWIFI SPI // The SPI port

#define SPIWIFI_SS 4 // Chip select pin

#define ESP32_RESETN 3 // Reset pin

#define SPIWIFI_ACK 2 // a.k.a BUSY or READY pin

#define ESP32_GPIO0 -1

#define SPIWIFI SPI // The SPI port

#define SPIWIFI_SS 16 // Chip select pin

#define ESP32_RESETN 15 // Reset pin

#define SPIWIFI_ACK 7 // a.k.a BUSY or READY pin

#define ESP32_GPIO0 -1

https://learn.adafruit.com/adafruit-airlift-featherwing-esp32-wifi-co-

processor-featherwing

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