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Add new usb_cdcacm.h, which provides the virtual serial port API.
This file (and new usb_cdcacm.c) consolidate the VCOM support, which
was previously distributed through descriptors.[hc], usb.[hc],
usb_callbacks.[hc], and usb_config.h.
Add usb_init_usblib() to usb.h, as a way of initializing the USB
peripheral in terms of the data structures required by usb_lib. This
is used by the new usb_cdcacm_enable().
Create new usb_lib_globals.h, with declarations for the usb_lib global
state which is most used throughout the rest of the libmaple USB stack.
Remove descriptors.c and usb_callbacks.[hc]; they are no longer
necessary.
Update the USB README accordingly.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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usb_config.h: Remove usb_regs.h dependency; fix includes; add license.
usb_callbacks.h: Change includes to the pieces of usb_lib/ it uses,
which doesn't include usb_regs.h.
descriptors.h: Remove unused usb_lib.h include.
usb.h: Remove unused usb_lib.h include. Some cosmetic commenting.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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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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http://forums.leaflabs.com/topic.php?id=687
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changed USB driver to nak whenever it cant fill an entire endpoint (64B) worth of new data. The old scheme was to set receive valid as long as as the endpoint buffer wasnt full, the new scheme is to nak until it is completely empty.
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uintx
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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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