Read multiple input endpoints

[ChiaYen-Kan]

hi
i try port some host driver to tinyusb base on felis/USB_Host_Shield_2.0

device is has 3 endpoints:
1 interrupt endpoint for input
1 bulk endpoint for input
1 bulk endpoint for output

i have to check each input endpoint(interrupt/bulk) sequentially to see if there is data coming in
when only one task check interrupt endpoint is work, interrupt endpoint have data coming
but when add second task to check bulk input endpoint, interrupt enpoint is broken, can't read any data from interrupt endpoint
how to handle multiple input endpoint transfer?

my board is STM32F429 Discovery

following is endpoint check task
HCI is input interrupt endpoint
ACL is input bulk endpoint

  // HCI Read
  switch (hci_step)
  {
    case HIC_STEP_READ:
    {
      TU_VERIFY(usbh_edpt_claim(_bt_dev_addr, _bt_itf->hci_event_ep_addr));
      if (!usbh_edpt_xfer(_bt_dev_addr, _bt_itf->hci_event_ep_addr, _bt_itf->hci_event_ep_buf, 256))
      {
        usbh_edpt_release(_bt_dev_addr, _bt_itf->hci_event_ep_addr);
        return false;
      }

      hci_step = HIC_STEP_WAIT;
      hci_poll_timer = tusb_time_millis_api();
      hci_total_read = 0;

      break;
    }
    case HIC_STEP_WAIT:
    {
      if ((tusb_time_millis_api() - hci_poll_timer) >= hci_poll_interval)
      {
        TU_VERIFY(usbh_edpt_release(_bt_dev_addr, _bt_itf->hci_event_ep_addr));
        hci_step = HIC_STEP_READ;
      }

      break;
    }
    case HIC_STEP_INCOME:
    {
      btd_hci_event_task(_bt_itf->hci_event_ep_buf, _bt_itf->hci_total_read);
      hci_step = HIC_STEP_READ;
      break;
    }
  }

  btd_hci_task();

#if 1
  // ACL read
  switch (acl_step)
  {
    case ACL_STEP_READ:
    {
      TU_VERIFY(usbh_edpt_claim(_bt_dev_addr, _bt_itf->acl_input_ep_addr));
      if (!usbh_edpt_xfer(_bt_dev_addr, _bt_itf->acl_input_ep_addr, _bt_itf->acl_input_ep_buf, _bt_itf->acl_input_ep_size)) {
        usbh_edpt_release(_bt_dev_addr, _bt_itf->acl_input_ep_addr);
        return false;
      }

      acl_step = ACL_STEP_WAIT;
      acl_total_read = 0;
      acl_poll_timer = tusb_time_millis_api();
      break;
    }
    case ACL_STEP_WAIT:
    {
      if ((tusb_time_millis_api() - acl_poll_timer) >= acl_poll_interval)
      {
        TU_VERIFY(usbh_edpt_release(_bt_dev_addr, _bt_itf->acl_input_ep_addr));
        acl_step = ACL_STEP_READ;
      }
    }
  }
#endif