From 48d164e3d4b2ef27fae20fae63b8014803a7b178 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Sun, 7 Jan 2018 21:44:39 -0800 Subject: altos/stmf0: Use double buffering for ChaosKey This improves the USB performance of ChaosKey so that it doesn't NAK during data transfers at all. Signed-off-by: Keith Packard --- src/stmf0/ao_arch_funcs.h | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'src/stmf0/ao_arch_funcs.h') diff --git a/src/stmf0/ao_arch_funcs.h b/src/stmf0/ao_arch_funcs.h index 01d51f90..56a3bc75 100644 --- a/src/stmf0/ao_arch_funcs.h +++ b/src/stmf0/ao_arch_funcs.h @@ -488,14 +488,17 @@ static inline void ao_arch_start_scheduler(void) { /* ao_usb_stm.c */ #if AO_USB_DIRECTIO -uint16_t * -ao_usb_alloc(void); +uint8_t +ao_usb_alloc(uint16_t *buffers[2]); -void -ao_usb_write(uint16_t *buffer, uint16_t len); +uint8_t +ao_usb_alloc2(uint16_t *buffers[2]); -void -ao_usb_write2(uint16_t *buffer, uint16_t len); +uint8_t +ao_usb_write(uint16_t len); + +uint8_t +ao_usb_write2(uint16_t len); #endif /* AO_USB_DIRECTIO */ #endif /* _AO_ARCH_FUNCS_H_ */ -- cgit v1.2.3