diff options
Diffstat (limited to 'os')
| -rw-r--r-- | os/hal/platforms/STM32/USBv1/usb_lld.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/os/hal/platforms/STM32/USBv1/usb_lld.c b/os/hal/platforms/STM32/USBv1/usb_lld.c index f3ee4d1fd..eac014de0 100644 --- a/os/hal/platforms/STM32/USBv1/usb_lld.c +++ b/os/hal/platforms/STM32/USBv1/usb_lld.c @@ -398,19 +398,22 @@ CH_IRQ_HANDLER(STM32_USB1_LP_HANDLER) { usb_packet_read_to_buffer(udp,
epcp->out_state->mode.linear.rxbuf,
n);
- epcp->out_state->mode.linear.rxbuf += n;
+ epcp->out_state->mode.linear.rxbuf += n;
}
/* Transaction data updated.*/
epcp->out_state->rxcnt += n;
epcp->out_state->rxsize -= n;
epcp->out_state->rxpkts -= 1;
- if (epcp->out_state->rxpkts > 0) {
- /* Transfer not completed, there are more packets to receive.*/
- EPR_SET_STAT_RX(ep, EPR_STAT_RX_VALID);
+
+ /* The transaction is completed if the specified number of packets
+ has been received or the current packet is a short packet.*/
+ if ((n < epcp->out_maxsize) || (epcp->out_state->rxpkts == 0)) {
+ /* Transfer complete, invokes the callback.*/
+ _usb_isr_invoke_out_cb(usbp, ep);
}
else {
- /* Transfer completed, invokes the callback.*/
- _usb_isr_invoke_out_cb(usbp, ep);
+ /* Transfer not complete, there are more packets to receive.*/
+ EPR_SET_STAT_RX(ep, EPR_STAT_RX_VALID);
}
}
}
|