altos/stmf0: Use double buffering for USB tx data
authorKeith Packard <keithp@keithp.com>
Sun, 7 Jan 2018 20:43:13 +0000 (12:43 -0800)
committerKeith Packard <keithp@keithp.com>
Sun, 7 Jan 2018 20:43:13 +0000 (12:43 -0800)
commit42072f591690b8258d957ab7a9b2f5d911676b39
treea25140c9fe685799b15fc69702b90d8d74177791
parenteead259673c6594d41cfab796c8674c8bf1863cc
altos/stmf0: Use double buffering for USB tx data

This shouldn't have much of an effect, but shows how double buffering
works.

Signed-off-by: Keith Packard <keithp@keithp.com>
src/stmf0/ao_usb_stm.c
src/stmf0/stm32f0.h