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A variety of USB descriptor structures have been manually
"unpacked". Instead of using the struct, their members were unpacked
into the struct they were nested in. Additionally sizeof()'s were
commented in favor of manual calculation of structure sizes.
After uncommenting these changes, the USB CDC peripheral stopped
correctly configuring with the host. The root problem with the
structures is that GCC is padding them. By applying
__attribute__((__packed__)), these problems are fixed. I removed all
the instances of the workaround I saw within the USB code.
Signed-off-by: RJ Ryan <rryan@mit.edu>
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Many of the #defines in libmaple.h were board-specific, not
MCU-specific. Most of these were only used by code under
libmaple/usb/. These were moved into usb_config.h, and are clearly
marked as being terrible hacks. I'm going to treat the USB stack as a
black box that we'll deal with later.
Further, instead of having a variety of #defines like "How many USARTS
do I have?", we decide that based on the density of the chip. This is
determined by testing for STM32_MEDIUM_DENSITY or STM32_HIGH_DENSITY
defines. libmaple currently doesn't support low-density chips, so
that suffices. The Makefile will set these automatically based on the
MCU.
Other offending #defines are ERROR_LED_PORT and ERROR_LED_PIN; these
were made optional, but they're set in the Makefile as a hack to keep
things working.
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also, removed some old usb file, bootVect.h, which setup the static table for the runtime usb lib that no longer exists and was provided by the bootloader rev 1
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