Mostly copy of stm32h743nucleo.
Linker script generated by STM32CubeIDE.
Since this device has only one HS USB
board.h contains few defines that map on
board HS USB to FS because there is no
ULPI chip mounted on Nucleo board.
For FreeRTOS build:
Set interrupt priority for HS always and for FS if exists.
Ordering by element size prevents alignment holes, and as a consequence the
host mode version of the struct is the same size as device, as pad bytes at
the end are used instead.
Don't mark IN buffers as available during the last 200us of a full-speed
frame. This avoids a situation seen with the USB2.0 hub on a Raspberry
Pi 4 where a late IN token before the next full-speed SOF can cause port
babble and a corrupt ACK packet. The nature of the data corruption has a
chance to cause device lockup.
Use the next SOF to mark delayed buffers as available. This reduces
available Bulk IN bandwidth by approximately 20%, and requires that the
SOF interrupt is enabled while these transfers are ongoing.
Inherit the top-level enable from the corresponding Pico-SDK flag.
Applications that will not use the device in a situation where it could
be plugged into a Pi 4 or Pi 400 (for example, when directly connected
to a commodity hub or other host) can turn off the flag in the SDK.
v2: use a field in hw_endpoint to mark pending.
v3: Partial rewrite following review comments
- Stub functions out if the workaround is not required
- Only force-enable SOF while any vulnerable endpoints are active
- Respect dcd_sof_enable() functionality
- Get rid of all but necessary ifdef hackery
- Fix a bug where the "endpoint lock" was used with an uninitialised pointer.
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.
Some Windows development environments invoke a mingw version of gnu make
with SHELL set to /bin/sh or /bin/bash (either explicitly or by default),
in which case tinyUSB make fails when a $(shell...) command feeds DOS syntax to sh.
We can't just use sh, as many Windows environments won't have unix utilities
like realpath (used by this makefile for sh shell commands).
This fix forces SHELL=cmd.exe on Windows and documents the issue.
Also adds additional documentation to help the next person...
With this fix, tinyUSB can be easily built and debugged in environments like
NXP's MCUxpresso (import as a makefile project).
hathach