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fix pktcnt when read len is zero

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sakumisu
2022-08-18 21:49:36 +08:00
parent 41239fa43f
commit 9e0cdf4cba
1 changed files with 1 additions and 1 deletions
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2
port/dwc2/usb_dc_dwc2.c
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@@ -882,7 +882,7 @@ int usbd_ep_start_read(const uint8_t ep, uint8_t *data, uint32_t data_len)
USB_OTG_OUTEP(ep_idx)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_PKTCNT);
USB_OTG_OUTEP(ep_idx)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_XFRSIZ);
if (data_len == 0) {
USB_OTG_OUTEP(ep_idx)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (pktcnt << 19));
USB_OTG_OUTEP(ep_idx)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (1 << 19));
USB_OTG_OUTEP(ep_idx)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_XFRSIZ & g_dwc2_udc.out_ep[ep_idx].ep_mps);
USB_OTG_OUTEP(ep_idx)->DOEPCTL |= (USB_OTG_DOEPCTL_CNAK | USB_OTG_DOEPCTL_EPENA);
return 0;