RuggedCircuits:
Start here:AVR-LIBC: avr-libc: Modules
ATmega328P: http://www.atmel.com/Images/doc8271.pdf--
The Gadget Shield: accelerometer, RGB LED, IR transmit/receive, speaker, microphone, light sensor, potentiometer, pushbuttons
Almost done with the documentation about ATmega328P.
Thank you for links.
I have another question, I am planning to use USB in order to send/receive data from PC/Smartphone. I have found also that Arduino UNO includes the USB Serial Light Adapter.
Which can be used for the purpose of sending/receiving data from PC via USB connection. But I couldn't find this information in the document above.
Do you know what documentation should I read in order to be able to use the USB Serial Light Adapter (also low level if possible)?