Public function docstrings belong exclusively in .h headers per
coding convention. Only static helper functions and static variables
retain docstrings in .c files. Removed 413 duplicate docstrings
across 185 files (15 CBM + 15 C SDK projects). All 30 projects
rebuild with zero errors.
No project uses floating-point, so coprocessor_enable() was dead code.
Removes rp2350_coprocessor.c/.h and all references from reset handlers
and Makefiles across all 15 CBM drivers (0x01-0x0f).
- Single-wire protocol on GPIO4 via SIO register bit-bang
- TIMER0 TIMERAWL for microsecond pulse-width measurement
- Tick generator configured for 1 us ticks at 12 MHz clk_ref
- UART output: humidity/temperature or wiring failure message
- Zero warnings, 1876 bytes text