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stm32-f4discovery-usb: don't re-activate the channel for BULK endpoints

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This commit is contained in:
Matthias Ringwald 2020-12-17 22:12:15 +01:00
parent 3faedff94c
commit 6cad159483
1 changed files with 10 additions and 5 deletions
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15
port/stm32-f4discovery-usb/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_hcd.c
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@ -1306,11 +1306,16 @@ static void HCD_HC_IN_IRQHandler(HCD_HandleTypeDef *hhcd, uint8_t chnum)
else if (hhcd->hc[ch_num].state == HC_NAK) else if (hhcd->hc[ch_num].state == HC_NAK)
{ {
hhcd->hc[ch_num].urb_state = URB_NOTREADY; hhcd->hc[ch_num].urb_state = URB_NOTREADY;
/* re-activate the channel */
tmpreg = USBx_HC(ch_num)->HCCHAR; // BK: don't re-activate the channel for BULK endpoints
tmpreg &= ~USB_OTG_HCCHAR_CHDIS; if (hhcd->hc[ch_num].ep_type != EP_TYPE_BULK){
tmpreg |= USB_OTG_HCCHAR_CHENA; /* re-activate the channel */
USBx_HC(ch_num)->HCCHAR = tmpreg; tmpreg = USBx_HC(ch_num)->HCCHAR;
tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
tmpreg |= USB_OTG_HCCHAR_CHENA;
USBx_HC(ch_num)->HCCHAR = tmpreg;
}
// BK: end fix
} }
else if (hhcd->hc[ch_num].state == HC_BBLERR) else if (hhcd->hc[ch_num].state == HC_BBLERR)
{ {