commit a9924af70685a76823be2551ea9bbe978275958e
author Chris Desjardins <chrisdesjardins@betronic.nl> Mon Apr 29 14:47:25 2024 +0200
committer Ali LABBENE <46019491+ALABSTM@users.noreply.github.com> Wed May 29 10:39:38 2024 +0100
tree 7883fb3cfe00039462fedc9e3fcf4c00a451bfdd
parent cff8a947c901b8db3f94f731e3aef516c7c60d8b

HCD: Re-activate the USB channel if not ready.

Otherwise the ErrCnt doesn't work, and the HAL_HCD_HC_NotifyURBChange_Callback
never gets invoked.

Src/stm32h7xx_hal_hcd.c

diff --git a/Src/stm32h7xx_hal_hcd.c b/Src/stm32h7xx_hal_hcd.c
index 17f99ed..12d2714 100644
--- a/Src/stm32h7xx_hal_hcd.c
+++ b/Src/stm32h7xx_hal_hcd.c
@@ -1693,6 +1693,12 @@
       else
       {
         hhcd->hc[chnum].urb_state = URB_NOTREADY;
+
+        /* re-activate the channel  */
+        tmpreg = USBx_HC(chnum)->HCCHAR;
+        tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
+        tmpreg |= USB_OTG_HCCHAR_CHENA;
+        USBx_HC(chnum)->HCCHAR = tmpreg;
       }
     }
     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_TXERR);