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Q&A How to access a hardware register from firmware?

When writing firmware in C for a microcontroller, how can I directly access a memory location such as a hardware peripheral register, given its absolute address? Is there a way to do this safely an...

1 answer  ·  posted 4y ago by Lundin‭  ·  edited 4y ago by Lundin‭

#3: Post edited by user avatar Lundin‭ · 2020-06-25T13:58:01Z (over 4 years ago)
#2: Post edited by user avatar Lundin‭ · 2020-06-25T13:57:25Z (over 4 years ago)
#1: Initial revision by user avatar Lundin‭ · 2020-06-25T13:27:26Z (over 4 years ago)
When writing firmware in C for a microcontroller, how can I directly access a memory location such as a hardware peripheral register, given its absolute address?

Is there a way to do this safely and portably in standard C without using the pre-made register map delivered together with the compiler libraries?