usb_otg.c ( File view )

  • By gregkam 2014-10-06
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			/**
  ******************************************************************************
  * @file    usb_otg.c
  * @author  MCD Application Team
  * @version V2.1.0
  * @date    19-March-2012
  * @brief   OTG Core Layer
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "usb_defines.h"
#include "usb_regs.h"
#include "usb_core.h"
#include "usb_otg.h"

/** @addtogroup USB_OTG_DRIVER
  * @{

  */
  
/** @defgroup USB_OTG 
  * @brief This file is the interface between EFSL ans Host mass-storage class
  * @{

  */


/** @defgroup USB_OTG_Private_Defines
  * @{

  */ 
/**
  * @
}
  */ 
 

/** @defgroup USB_OTG_Private_TypesDefinitions
  * @{

  */ 
/**
  * @
}
  */ 



/** @defgroup USB_OTG_Private_Macros
  * @{

  */ 
/**
  * @
}
  */ 


/** @defgroup USB_OTG_Private_Variables
  * @{

  */ 
/**
  * @
}
  */ 


/** @defgroup USB_OTG_Private_FunctionPrototypes
  * @{

  */ 

uint32_t USB_OTG_HandleOTG_ISR(USB_OTG_CORE_HANDLE *pdev);

static uint32_t USB_OTG_HandleConnectorIDStatusChange_ISR(USB_OTG_CORE_HANDLE *pdev);
static uint32_t USB_OTG_HandleSessionRequest_ISR(USB_OTG_CORE_HANDLE *pdev);
static uint32_t USB_OTG_Read_itr(USB_OTG_CORE_HANDLE *pdev);

/**
  * @
}
  */ 


/** @defgroup USB_OTG_Private_Functions
  * @{

  */ 


/*                           OTG Interrupt Handler                         */


/**
  * @brief  STM32_USBO_OTG_ISR_Handler
  *         
  * @param  None
  * @retval : None
  */
uint32_t STM32_USBO_OTG_ISR_Handler(USB_OTG_CORE_HANDLE *pdev)
{

  uint32_t retval = 0;
  USB_OTG_GINTSTS_TypeDef  gintsts ;
  gintsts.d32 = 0;

  gintsts.d32 = USB_OTG_Read_itr(pdev);
  if (gintsts.d32 == 0)
  {

    return 0;
  
}
  if (gintsts.b.otgintr)
  {

    retval |= USB_OTG_HandleOTG_ISR(pdev);
  
}
  if (gintsts.b.conidstschng)
  {

    retval |= USB_OTG_HandleConnectorIDStatusChange_ISR(pdev);
  
}
  if (gintsts.b.sessreqintr)
  {

    retval |= USB_OTG_HandleSessionRequest_ISR(pdev);
  
}
  return retval;

}


/**
  * @brief  USB_OTG_Read_itr
  *         returns the Core Interrupt register
  * @param  None
  * @retval : status
  */
static uint32_t USB_OTG_Read_itr(USB_OTG_CORE_HANDLE *pdev)
{

  USB_OTG_GINTSTS_TypeDef  gintsts;
  USB_OTG_GINTMSK_TypeDef  gintmsk;
  USB_OTG_GINTMSK_TypeDef  gintmsk_common;
  
  
  gintsts.d32 = 0;
  gintmsk.d32 = 0;
  gintmsk_common.d32 = 0;
  
  /* OTG interrupts */
  gintmsk_common.b.sessreqintr = 1;
  gintmsk_common.b.conidstschng = 1;
  gintmsk_common.b.otgintr = 1;
  
  gintsts.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GINTSTS);
  gintmsk.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GINTMSK);
  return ((gintsts.d32 & gintmsk.d32 ) & gintmsk_common.d32);

}


/**
  * @brief  USB_OTG_HandleOTG_ISR
  *         handles the OTG Interrupts
  * @param  None
  * @retval : status
  */
static uint32_t USB_OTG_HandleOTG_ISR(USB_OTG_CORE_HANDLE *pdev)
{

  USB_OTG_GOTGINT_TypeDef  gotgint;
  USB_OTG_GOTGCTL_TypeDef  gotgctl;
  
  
  gotgint.d32 = 0;
  gotgctl.d32 = 0;
  
  gotgint.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGINT);
  gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
  
  if (gotgint.b.sesenddet)
  {

    gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
    
    
    if (USB_OTG_IsDeviceMode(pdev))
    {


    
}
    else if (USB_OTG_IsHostMode(pdev))
    {


    
}
  
}

  /* ----> SRP SUCCESS or FAILURE INTERRUPT <---- */
  if (gotgint.b.sesreqsucstschng)
  {

    gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
    if (gotgctl.b.sesreqscs) /* Session request success                                          */
    {

      if (USB_OTG_IsDeviceMode(pdev))
      {


      
}
      /* Clear Session Request */
      gotgctl.d32 = 0;
      gotgctl.b.sesreq = 1;
      USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GOTGCTL, gotgctl.d32, 0);
    
}
    else /* Session request failure                                          */
    {

      if (USB_OTG_IsDeviceMode(pdev))
      {


      
}
    
}
  
}
  /* ----> HNP SUCCESS or FAILURE INTERRUPT <---- */
  if (gotgint.b.hstnegsucstschng)
  {

    gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);

    if (gotgctl.b.hstnegscs)                                    /* Host negotiation success                                         */
    {

      if (USB_OTG_IsHostMode(pdev))                              /* The core AUTOMATICALLY sets the Host mode                        */
      {


      
}
    
}
    else                                                        /* Host negotiation failure */
    {


    
}
    gotgint.b.hstnegsucstschng = 1;                             /* Ack "Host Negotiation Success Status Change" interrupt.          */
  
}
  /* ----> HOST NEGOTIATION DETECTED INTERRUPT <---- */
  if (gotgint.b.hstnegdet)
  {

    if (USB_OTG_IsDeviceMode(pdev))                              /* The core AUTOMATICALLY sets the Host mode                        */
    {


    
}
    else
    {


    
}
  
}
  if (gotgint.b.adevtoutchng)
  {

}
  if (gotgint.b.debdone)
  {

    USB_OTG_ResetPort(pdev);
  
}
  /* Clear OTG INT */
  USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGINT, gotgint.d32);
  return 1;

}


/**
  * @brief  USB_OTG_HandleConnectorIDStatusChange_ISR
  *         handles the Connector ID Status Change Interrupt
  * @param  None
  * @retval : status
  */
static uint32_t USB_OTG_HandleConnectorIDStatusChange_ISR(USB_OTG_CORE_HANDLE *pdev)
{

  USB_OTG_GINTMSK_TypeDef  gintmsk;
  USB_OTG_GOTGCTL_TypeDef   gotgctl;
  USB_OTG_GINTSTS_TypeDef  gintsts;
  
  gintsts.d32 = 0 ;
  gintmsk.d32 = 0 ;
  gotgctl.d32 = 0 ;
  gintmsk.b.sofintr = 1;
  
  USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GINTMSK, gi
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spi.c12.33 kB2013-04-23|01:09
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usb_conf.h10.48 kB2013-04-23|01:09
usb_core.h12.29 kB2013-04-23|01:09
usb_dcd.h4.48 kB2013-04-23|01:09
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usb_defines.h6.52 kB2013-04-23|01:09
usb_hcd.h2.76 kB2013-04-23|01:09
usb_hcd_int.h3.65 kB2013-04-23|01:09
usb_otg.h1.97 kB2013-04-23|01:09
usb_regs.h21.22 kB2013-04-23|01:09
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usb_dcd_int.c21.32 kB2013-04-23|01:09
usb_hcd.c5.62 kB2013-04-23|01:09
usb_hcd_int.c21.58 kB2013-04-23|01:09
usb_otg.c9.48 kB2013-04-23|01:09
usbd_cdc_core.c24.57 kB2013-04-23|01:09
usbd_cdc_if_template.c6.07 kB2013-04-23|01:09
usbd_cdc_vcp.c6.71 kB2013-04-23|01:09
usbd_core.c11.39 kB2013-04-23|01:09
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