add timer to control interrupt transfer

core/usbh_core.h

@@ -43,6 +43,8 @@ extern "C" {
 #define CLASS_INFO_DEFINE __attribute__((section("usbh_class_info"))) __USED __ALIGNED(1)
 #endif
 
+#define USBH_GET_URB_INTERVAL(interval, speed) (speed < USB_SPEED_HIGH ? interval: (1 << (interval - 1)))
+
 #define USBH_EP_INIT(ep, ep_desc)                                            \
     do {                                                                     \
         ep = ep_desc;                                                        \
@@ -128,6 +130,7 @@ struct usbh_hub {
     struct usb_endpoint_descriptor *intin;
     struct usbh_urb intin_urb;
     uint8_t *int_buffer;
+    struct usb_osal_timer *int_timer;
 };
 
 struct usbh_devaddr_map {
@@ -214,6 +217,7 @@ static inline void usbh_int_urb_fill(struct usbh_urb *urb,
     urb->timeout = timeout;
     urb->complete = complete;
     urb->arg = arg;
+    urb->interval = USBH_GET_URB_INTERVAL(ep->bInterval, hport->speed);
 }
 
 extern struct usbh_bus g_usbhost_bus[];