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usb_device.c: Fix EP buffer size limitation for isochronous endpoints #78

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usb_device.c: Fix EP buffer size limitation for isochronous endpoints #78

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Commits on Jul 17, 2024

  1. usb_device.c: Fix EP buffer size limitation for isochronous endpoints 

    The buffer size for USB endpoints was previously limited by the
endpoints buffer stride, which is 128 bytes * 2 for isochronous
endpoints and 64 bytes for bulk transfers.

According to the USB full-speed specification, the maximum frame size
can go up to 1023 bytes. The RP2040 microcontroller has 4KB of DPSRAM,
which can support this maximum frame size.

This commit removes the 128 bytes * 2 limitation for isochronous
endpoints, allowing support for the full 1023-byte frame size.

Signed-off-by: Khoa Hoang <[email protected]>
    @maximus64
    maximus64 committed Jul 17, 2024
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