diff options
Diffstat (limited to 'os')
| -rw-r--r-- | os/hal/platforms/STM32/USBv1/usb_lld.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/os/hal/platforms/STM32/USBv1/usb_lld.c b/os/hal/platforms/STM32/USBv1/usb_lld.c index eac014de0..22af59866 100644 --- a/os/hal/platforms/STM32/USBv1/usb_lld.c +++ b/os/hal/platforms/STM32/USBv1/usb_lld.c @@ -350,13 +350,11 @@ CH_IRQ_HANDLER(STM32_USB1_LP_HANDLER) { transmitted = (size_t)USB_GET_DESCRIPTOR(ep)->TXCOUNT0;
epcp->in_state->txcnt += transmitted;
- epcp->in_state->txsize -= transmitted;
- if (epcp->in_state->txsize > 0) {
+ n = epcp->in_state->txsize - epcp->in_state->txcnt;
+ if (n > 0) {
/* Transfer not completed, there are more packets to send.*/
- if (epcp->in_state->txsize > epcp->in_maxsize)
+ if (n > epcp->in_maxsize)
n = epcp->in_maxsize;
- else
- n = epcp->in_state->txsize;
if (epcp->in_state->txqueued)
usb_packet_write_from_queue(USB_GET_DESCRIPTOR(ep),
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