diff options
Diffstat (limited to 'libmaple/usb')
| -rw-r--r-- | libmaple/usb/stm32f1/usb_reg_map.c | 25 |
1 files changed, 7 insertions, 18 deletions
diff --git a/libmaple/usb/stm32f1/usb_reg_map.c b/libmaple/usb/stm32f1/usb_reg_map.c index fbfca86..71bbe0d 100644 --- a/libmaple/usb/stm32f1/usb_reg_map.c +++ b/libmaple/usb/stm32f1/usb_reg_map.c @@ -58,8 +58,7 @@ void usb_copy_from_pma(uint8 *buf, uint16 len, uint16 pma_offset) { } } -void usb_set_ep_rx_buf0_count(uint8 ep, uint16 count) { - uint32 *rxc = usb_ep_tx_count_ptr(ep); +static void usb_set_ep_rx_count_common(uint32 *rxc, uint16 count) { uint16 nblocks; if (count > 62) { /* use 32-byte memory block size */ @@ -78,22 +77,12 @@ void usb_set_ep_rx_buf0_count(uint8 ep, uint16 count) { } } +void usb_set_ep_rx_buf0_count(uint8 ep, uint16 count) { + uint32 *rxc = usb_ep_tx_count_ptr(ep); + usb_set_ep_rx_count_common(rxc, count); +} + void usb_set_ep_rx_count(uint8 ep, uint16 count) { uint32 *rxc = usb_ep_rx_count_ptr(ep); - uint16 nblocks; - if (count > 62) { - /* use 32-byte memory block size */ - nblocks = count >> 5; - if ((count & 0x1F) == 0) { - nblocks--; - } - *rxc = (nblocks << 10) | 0x8000; - } else { - /* use 2-byte memory block size */ - nblocks = count >> 1; - if ((count & 0x1) != 0) { - nblocks++; - } - *rxc = nblocks << 10; - } + usb_set_ep_rx_count_common(rxc, count); } |