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FREE Book: Embedded C Coding Standard, by Michael Barr

A C coding standard is a set of rules for source code that is adopted by a team of programmers working together on a project, such as the design of an embedded system.  Programming teams and companies write down their C coding standards for a variety of reasons but often bicker internally about which rules to follow.

"Barr Group's Embedded C Coding Standard" was developed to minimize bugs in firmware by focusing on practical rules that keep bugs out--while also improving the maintainability and portability of embedded software. The coding standard details a set of guiding principles as well as specific naming conventions and other rules for the use of data types, functions, preprocessor macros, variables and much more. Individual rules that have been demonstrated to reduce or eliminate certain types of bugs are highlighted.