Document CywPin

Author: jepler

ports/raspberrypi/bindings/cyw43/__init__.c

@@ -32,6 +32,13 @@
 #include "shared-bindings/microcontroller/Pin.h"
 #include "bindings/cyw43/__init__.h"
 
+//| class CywPin:
+//|     """A class that represents a GPIO pin attached to the wifi chip.
+//|
+//|     Cannot be constructed at runtime, but may be the type of a pin object
+//|     in `board`. A `CywPin` can be used as a DigitalInOut, but not with other
+//|     peripherals such as `PWMOut`."""
+//|
 const mp_obj_type_t cyw43_pin_type = {
     { &mp_type_type },
     .flags = MP_TYPE_FLAG_EXTENDED,