This commit makes it so that when setting the START_TRANS bit in the
SIE_CTRL register, along with some other bits, we first set all the
other bits, then wait some cycles, and then set the START_TRANS bit.
Doing so protects against a situation where the USB controller is
reading the register at the same time and gets an incorrect value.
This mirrors the procedure already applied to buffer control
registers.
The next change to the driver requires the export of these functions. Leave the
lock unimplemented for now.
Also move hw_set and hw_clear aliases into the top-level header file.
IAR generates warning Pe111 'statement is unreachable'. In a couple of
cases, replace return statements with TU_ATTR_FALLTHROUGH; because some
compilers apparently can't figure out that the return statements are
unreachable but do whinge about an imagined fall-through without them!
Some compilers don't support the GNU extension `typeof` so their definitions
of `hw_set_alias` can't inherit their type from their argument, and the best
we can do is have `hw_set_alias` act the same as `hw_set_alias_untyped`.
This requires an explicit cast when the macro is used instead, otherwise
IAR generates error Pe132 'expression must have pointer-to-struct-or-union
type but it has type "void *"'.
The same goes for `hw_clear_alias`.
- Stall now has priority over other interrupt responses
- Delete eunused hcd_edpt_busy
- Assert !ep->active when trying to start a new xfer
- Assert !ep->active when handling buff_status bits
- Set ep->xferred_len to 8 once a setup packet is finished so the data
structure is accurate
* Removed some compiler warnings, and cleaned out unnecessary warning suppression from CMake suppress_tinyusb_warnings()
* Made explicit family_configure_dual_usb_example() for DUAL mode examples as family_configure_target() may not generally be called multiple times for the same target
* Renamed library pico_pio_usb to tinyusb_picio_pio_usb to be clearer and avoid conflict if someone already has a pico_pio_usb in their project
* Added family_add_pico_pio_usb() method for adding Pico-PIO_SUB support to an existing example
* Allowed tinyusb_pico_pio_usb to be added to regular apps using the Pico SDK
- make _hw_endpoint_xfer_sync and _hw_endpoint_start_next_buffer private
- drop prefix _ from _hw_endpoint_xfer_continue and
_hw_endpoint_reset_transfer
