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stm32h7: Fix accidental overwrite of STUPCNT field in DOEPTSIZ register.

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This commit is contained in:
William D. Jones
2019-09-03 00:25:21 -04:00
parent 9210167603
commit d4302dacc5
1 changed files with 3 additions and 2 deletions
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5
src/portable/st/stm32h7/dcd_stm32h7.c
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@@ -256,7 +256,7 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
dev->DIEPEMPMSK |= (1 << epnum);
} else {
// Each complete packet for OUT xfers triggers XFRC.
out_ep[epnum].DOEPTSIZ = (1 << USB_OTG_DOEPTSIZ_PKTCNT_Pos) | \
out_ep[epnum].DOEPTSIZ |= (1 << USB_OTG_DOEPTSIZ_PKTCNT_Pos) | \
((xfer->max_size & USB_OTG_DOEPTSIZ_XFRSIZ_Msk) << USB_OTG_DOEPTSIZ_XFRSIZ_Pos);
out_ep[epnum].DOEPCTL |= USB_OTG_DOEPCTL_EPENA | USB_OTG_DOEPCTL_CNAK;
}
@@ -410,6 +410,7 @@ static void read_rx_fifo(USB_OTG_OUTEndpointTypeDef * out_ep) {
case 0x06: // Setup packet recvd
{
uint8_t setup_left = ((out_ep[epnum].DOEPTSIZ & USB_OTG_DOEPTSIZ_STUPCNT_Msk) >> USB_OTG_DOEPTSIZ_STUPCNT_Pos);
// We can receive up to three setup packets in succession, but
// only the last one is valid.
_setup_packet[4 - 2*setup_left] = (* rx_fifo);
@@ -451,7 +452,7 @@ static void handle_epout_ints(USB_OTG_DeviceTypeDef * dev, USB_OTG_OUTEndpointTy
dcd_event_xfer_complete(0, n, xfer->queued_len, XFER_RESULT_SUCCESS, true);
} else {
// Schedule another packet to be received.
out_ep[n].DOEPTSIZ = (1 << USB_OTG_DOEPTSIZ_PKTCNT_Pos) | \
out_ep[n].DOEPTSIZ |= (1 << USB_OTG_DOEPTSIZ_PKTCNT_Pos) | \
((xfer->max_size & USB_OTG_DOEPTSIZ_XFRSIZ_Msk) << USB_OTG_DOEPTSIZ_XFRSIZ_Pos);
out_ep[n].DOEPCTL |= USB_OTG_DOEPCTL_EPENA | USB_OTG_DOEPCTL_CNAK;
}