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Fix synopsys fifo flush during stall

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Wrong FIFO was flushed in dcd_edpt_stall().
(epnum - 1) should only be used when accessing DIEPTXF registers.

For DIEPCTL and GRSTCTL epnum is correct index.
This commit is contained in:
Jerzy Kasenberg 2020-08-12 10:18:11 +02:00
parent b0f617ba20
commit 88c5e2a37f
1 changed files with 1 additions and 1 deletions
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2
src/portable/st/synopsys/dcd_synopsys.c
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@ -667,7 +667,7 @@ void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
}
// Flush the FIFO, and wait until we have confirmed it cleared.
usb_otg->GRSTCTL |= ((epnum - 1) << USB_OTG_GRSTCTL_TXFNUM_Pos);
usb_otg->GRSTCTL |= (epnum << USB_OTG_GRSTCTL_TXFNUM_Pos);
usb_otg->GRSTCTL |= USB_OTG_GRSTCTL_TXFFLSH;
while((usb_otg->GRSTCTL & USB_OTG_GRSTCTL_TXFFLSH_Msk) != 0);
} else {