fix(usb/host): Fixed Full Speed periodic transfers on ESP32-P4

tore-espressif · tore-espressif · commit 91f0cb493f66 · 2025-01-24T13:43:32.000+01:00
For FS periodic endpoints 'tokens_per_frame' must be set to 8
LL usb_dwc_ll_hctsiz_set_sched_info() function.
diff --git a/components/hal/usb_dwc_hal.c b/components/hal/usb_dwc_hal.c
@@ -395,6 +395,8 @@ void usb_dwc_hal_chan_set_ep_char(usb_dwc_hal_context_t *hal, usb_dwc_hal_chan_t
             } else {
                 tokens_per_frame = 8; // 1 token every microframe
             }
+        } else {
+            tokens_per_frame = 8;
         }
         usb_dwc_ll_hctsiz_set_sched_info(chan_obj->regs, tokens_per_frame, ep_char->periodic.offset);
     }

Original file line number	Diff line number	Diff line change
`@@ -395,6 +395,8 @@ void usb_dwc_hal_chan_set_ep_char(usb_dwc_hal_context_t *hal, usb_dwc_hal_chan_t`
`395`	`395`	`} else {`
`396`	`396`	`tokens_per_frame = 8; // 1 token every microframe`
`397`	`397`	`}`
	`398`	`+ } else {`
	`399`	`+ tokens_per_frame = 8;`
`398`	`400`	`}`
`399`	`401`	`usb_dwc_ll_hctsiz_set_sched_info(chan_obj->regs, tokens_per_frame, ep_char->periodic.offset);`
`400`	`402`	`}`