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Second endpoint issue - STM32F107

rraval2
Associate
Posted on October 12, 2016 at 22:35

We are using the following USB FS library. All I need is an additional IN end point to send data to Host. When I tried to add an End point, for end point 2, transfer complete flag is never set. When using End point 1 it is working fine.

For End point 2: I can never clear the interrupt as transfer complete is never set. More over, I do not see any data sent to Host.

Any help is really appreciated.

if (diepint.b.emptyintr)

      {

       

        DCD_WriteEmptyTxFifo(pdev , epnum);

       

        CLEAR_IN_EP_INTR(epnum, emptyintr);

       

}

To add Endpoint:

/**

  * @brief  CustomHIDDevice_Init

  *         Initialize the HID interface

  * @param  pdev: device instance

  * @param  cfgidx: Configuration index

  * @retval status

  */

static uint8_t  CustomHIDDevice_Init (void  *pdev, uint8_t cfgidx)

{

    /* Open EP IN */

    DCD_EP_Open((USB_OTG_CORE_HANDLE *)pdev,

              EP1_IN,

              0x40,

              USB_OTG_EP_INT);

    /* Open EP IN */

    DCD_EP_Open((USB_OTG_CORE_HANDLE *)pdev,

              EP2_IN,

              0x40,

              USB_OTG_EP_INT);

    MyUSBDescriptor.Get_SerialNum(&MyConfigData.MyVars);

    return USBD_OK;

}

Any ideas or help really appreciated. Here is the library code version:

  ******************************************************************************

  * @file    usb_dcd_int.c

  * @author  MCD Application Team

  * @version V2.1.0

  * @date    19-March-2012

  * @brief   Peripheral Device interrupt subroutines

#stm32f107
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