altos/lpc: Double buffer USB data transfers
authorKeith Packard <keithp@keithp.com>
Fri, 16 Jan 2015 09:09:26 +0000 (22:09 +1300)
committerKeith Packard <keithp@keithp.com>
Fri, 6 Feb 2015 00:15:04 +0000 (16:15 -0800)
commit9fac8b639d2142c90eb95771cda1f6559e987db2
treefc0b4b8c0c57f824351253f93d812f2cca8eacc2
parent0671b3c8c24c9f33be77a10315c4669f33c516d7
altos/lpc: Double buffer USB data transfers

This allocates twice the space in the USB memory so that transactions
can be double buffered without using separate CPU memory.

Signed-off-by: Keith Packard <keithp@keithp.com>
Conflicts:
src/lpc/ao_usb_lpc.c
src/lpc/ao_usb_lpc.c