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Merge pull request #451 from duempel/fix_synopsys_short_packet

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Fix receiving of short packet data (Synopsys)
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Ha Thach 2020-07-01 00:11:21 +07:00 committed by GitHub
commit e4391c32a6
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1 changed files with 9 additions and 0 deletions
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src/portable/st/synopsys/dcd_synopsys.c
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@ -576,6 +576,15 @@ static void handle_rxflvl_ints(USB_OTG_OUTEndpointTypeDef * out_ep) {
// Increment pointer to xfer data // Increment pointer to xfer data
xfer->buffer += bcnt; xfer->buffer += bcnt;
// Truncate transfer length in case of short packet
if(bcnt < xfer->max_size) {
xfer->total_len -= (out_ep[epnum].DOEPTSIZ & USB_OTG_DOEPTSIZ_XFRSIZ_Msk) >> USB_OTG_DOEPTSIZ_XFRSIZ_Pos;
if(epnum == 0) {
xfer->total_len -= ep0_pending[TUSB_DIR_OUT];
ep0_pending[TUSB_DIR_OUT] = 0;
}
}
} }
break; break;
case 0x03: // Out packet done (Interrupt) case 0x03: // Out packet done (Interrupt)