I am good at C programming and also I am good at embedded devices. I have setup an embedded circuit myself using the basic arduino and by interfacing some devices with it.

But the main problem is that I do not know where and how to start programming this device with the known C programming skills. The device has an on chip boot loader.

By "start programming", I mean how to bring the embedded device into my programming and stuff.

I know program starts from a main() and an infinite loop makes the application run.

But the real question is, how to start this all and integrate the hardware with the software which I write.

Kindly help with this.

Thanks for the help in advance.