['F042 USB] USB buffer not writable bytewise
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2018-07-08 07:35 AM
Posted on July 08, 2018 at 16:35
RM0091 Rev.9, 30.6.2 Buffer descriptor table, states:
The packet memory should be accessed onlyt by byte (8-bit) or half-word (16-bit) accesses.
Halfword access is OK. Bytewise read is OK. But writing a byte results in it being copied into the other half of the halfword, which this byte is part of, and this is not OK.
Can ST please comment.
Thanks,
Jan Waclawek
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Documentation
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STM32F0 Series
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USB
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