RPi-Sense

WIP LED HAT firmware and driver

Prerequisites

sudo apt-get install gcc-avr avr-libc avrdude

Compiling

make

Flashing

Ensure SPI is enabled.

make flash

Using the board

Enable I2C in raspi-config

Boards with a programmed EEPROM will have nodes populated in the device tree automatically.

Add the following module to /etc/modules:

i2c-dev

Using IIO

https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-bus-iio

https://archive.fosdem.org/2012/schedule/event/693/127_iio-a-new-subsystem.pdf

http://wiki.analog.com/software/linux/docs/iio/iio-trig-sysfs