Q: Can you suggest reference books you have found helpfu?
A: There is ALOT of information on www.arm.com on the generic cores, and you'll want to search on the Cortex M0, M3, M4. In addition, you may want to consider "The Definitive Guide to the ARM Cortex-M3" by Joseph Yiu. He has also written one for the Cortex M4.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.