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In a interrupt driven embedded system there are two devices connected to a CAN bus. Two independent software routines communicate independent of each other with Device A and Device B through a shared CAN bus. See drawing below.
- The definitive guide to the CORTEX-M3, Second edition - section 10.6 page 177 (ISBN978-1-85617-963-8)
- ARM Assembler reference section 3.3.13 page 3.39