Commit Graph

2 Commits

Author SHA1 Message Date
iabdalkader c214c9e648 rp2/machine_pin: Add support for named pins and alternate functions.
This commit adds support for generating named pin mappings for all pins
including CPU, board-defined, LED and externally controlled pins.  CPU pins
are mapped to `pin_GPIO<n>`, externally-controlled pins are mapped to
`pin_EXT_GPIO<n>`, and defined conditionally (up to 10 pins, and can be
expanded in the future), and they are non-const to allow `machine-pin.c` to
write the pin object fields.  Both CPU and externally controlled pins are
generated even if there's no board CSV file; if one exists it will just be
added to board pins.
2023-01-16 11:44:26 +11:00
iabdalkader 66e0cfc3b9 rp2/machine_pin: Refactor the machine.Pin class for external GPIO.
Handle externally controlled GPIO pins more generically, by removing all
CYW43-specific code from `machine_pin.c`, and adding hooks to initialise,
configure, read and write external pins.  This allows any driver for an
on-board module which controls GPIO pins (such as CYW43 or NINA), to
provide its own implementation of those hooks and work seamlessly with
`machine_pin.c`.
2023-01-16 11:37:18 +11:00