Earlier I posted to the list about my attempt to use the f107 usb driver on
the stm32f103c8t6 MCU, which turned out to be inappropriate (no OTG support
for f103).
I later discovered an example using the st_usbfs_v1 driver. Using that, I
was able to get a modified USB CDC demo going, and later even under
FreeRTOS as well. The name of this driver (with "fs" in it) originally
caused me to doubt that I could use it for this purpose. But it seems to
work just fine as a polled driver. Within FreeRTOS, you just have to run
everything USB driver related from one thread.
My present question for the list:
*What is the difference between st_usbfs_v1.c and st_usbfs_v2.c? *
Based upon a diff and comments, it would appear that v2 was created to deal
with limitations of the Cortex-M0 unaligned copies (bytewise copies vs
words). Is that entirely it? I just want to verify that the v1 driver is my
best choice for the f103 (without forced alignment enabled).
Thanks, Warren
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