USB Library 2.1.0 USBH_USR_DeviceDisconnected Problem ?

Posted on March 20, 2013 at 00:32

Hi. 

I use stm32f105 and STM32_F105-07_F2xx_USB-Host-Device_Lib_V2.0.0 usb library and i can handle  USBH_USR_DeviceDisconnected event when USBH_Process detects any Flash Disk when application starts.

But when i try to use STM32_USB-Host-Device_Lib_V2.1.0 usb library, USBH_Process function does not detect any Flash Disk. Only, after plugging in Flash disk, and after removing this event can be detected. 

When i looked the code, there are differences as follows...in v2.0.0, USBH_Process handles DISCONNECTED EVENT first time, but v2.1.0 does not detect this. 

v2.1.0

  if ((HCD_IsDeviceConnected(pdev) == 0)&& (phost->gState != HOST_IDLE)) 

  {

    if(phost->gState != HOST_DEV_DISCONNECTED) 

    {

      phost->gState = HOST_DEV_DISCONNECTED;

    }

  }

v2.0.0

  /* check device disconnection event */

   if (!(HCD_IsDeviceConnected(pdev)) && 

       (pdev->host.port_cb->DisconnHandled == 0))

  { 

    /* Manage User disconnect operations*/

    phost->usr_cb->DeviceDisconnected();

    

    pdev->host.port_cb->DisconnHandled = 1; /* Handle to avoid the Re-entry*/

    

    /* Re-Initilaize Host for new Enumeration */

    USBH_DeInit(pdev, phost);

    phost->usr_cb->DeInit();

    phost->class_cb->DeInit(pdev, &phost->device_prop);

  }  

First of all, i need to detect any disconnect event, when application starts first time. i want to use v2.0.0 USB library but i am not sure. i hope this is not bug. i read release notes of these libraries but i am not sure which one is much more suitable for usb application?...

Thanks in advance.

Best regards