Simple Arduino driver for the AT86RF233 802.15.4 radio module
arduino-at86rf233.ino demonstrates the simplest example application -- an Arduino sketch that scans for nearby traffic and prints incoming frames over serial (115200 baud).
Designed to be used with ATMEL's AT86RF233 802.15.4 radio, available as a $30USB radio extension board (REB).
In this example, we will be using an Arduino Uno. You are free to use any MCU with a sufficient clock speed, and at least:
- 1 SPI bus
- VCC (3.3V) & GND
- 3 GPIO ouput
- 1 interruptible GPIO input
Here's the wiring setup. You may find the Uno pinout reference helpful (included below).
| Purpose | AT86RF233 (REB X-Pro Extension Header) | Arduino Uno |
|---|---|---|
| Reset | 7 | 8 |
| Interrupt | 9 | 2 |
| Sleep | 10 | 7 |
| CS | 15 | 6 |
| MOSI | 16 | MOSI (ICSP header) |
| MISO | 17 | MISO (ICSP header) |
| SCK | 18 | SCK (ICSP header) |
| Ground | 19 | GND |
| Power | 20 | VCC (3.3V) |
Without further configuration, this library will use the default AT86RF2xx parameters contained in at86rf2xx-defaults.h. Most radio parameters can be updated manually by using the set/getters enumerated in at86rf2xx-getset.c. For example, to change the radio channel to 25, simply call set_chan(25) on the at86rf2xx device after initialization:
at86rf2xx.init(SEL, IRQ, SLP_TR, RESET);
at86rf2xx.set_chan(25); // set channel to 25