There are two libraries available on the Intel Edison/Galileo for developing applications written in C that need to use sensors, actuators, LEDs etc…
- MRAA: Provides API for interfacing with the GPIOs, ADCs, PWM, SPI, etc… It is basically for interfacing the low level peripherals. It is kind of bare bones, you can use the functions provided by MRAA to drive more complicated peripherals like sensors or you can use…
- UPM: Provides higher levels of abstractions via objects for controlling things like LCDs, temperature sensors etc… It is a level above the MRAA and most of the functions that you might need while interfacing a sensor or LCD are already implemented in UPM.
