Register maps for I²C and SPI chips

Every address, bitfield and reset value — and the same data as a C header, in one command.

pip install regforge
regforge gen BME280 --out ./src --driver --tests

Parts

The problem

Bringing up a new chip means retyping register tables out of a PDF into a header by hand. [7:5] means shift 5, width 3. Get it backwards and nothing tells you — you find out on a logic analyser, a day later.

The solution

Read the map here, or generate it as C. The generated header ships with compile-time assertions, so a wrong mask is a build failure naming the field instead of a silent hardware bug.

Missing a part?

regforge scan datasheet.pdf          # free, shows which pages it will read
regforge extract datasheet.pdf --part XYZ

Contribute it back and it is free for everyone after you. Each part gets paid for once.