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circuitpython/stm/lib/usbd_msc_core.c

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/**
******************************************************************************
* @file usbd_msc_core.c
* @author MCD Application Team
* @version V1.1.0
* @date 19-March-2012
* @brief This file provides all the MSC core functions.
*
* @verbatim
*
* ===================================================================
* MSC Class Description
* ===================================================================
* This module manages the MSC class V1.0 following the "Universal
* Serial Bus Mass Storage Class (MSC) Bulk-Only Transport (BOT) Version 1.0
* Sep. 31, 1999".
* This driver implements the following aspects of the specification:
* - Bulk-Only Transport protocol
* - Subclass : SCSI transparent command set (ref. SCSI Primary Commands - 3 (SPC-3))
*
* @endverbatim
*
******************************************************************************
* @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 "usbd_msc_mem.h"
#include "usbd_msc_core.h"
#include "usbd_msc_bot.h"
#include "usbd_msc_conf.h"
#include "usbd_req.h"
/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
* @{
*/
/** @defgroup MSC_CORE
* @brief Mass storage core module
* @{
*/
/** @defgroup MSC_CORE_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup MSC_CORE_Private_Defines
* @{
*/
/**
* @}
*/
/** @defgroup MSC_CORE_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup MSC_CORE_Private_FunctionPrototypes
* @{
*/
uint8_t USBD_MSC_Init (void *pdev,
uint8_t cfgidx);
uint8_t USBD_MSC_DeInit (void *pdev,
uint8_t cfgidx);
uint8_t USBD_MSC_Setup (void *pdev,
USB_SETUP_REQ *req);
uint8_t USBD_MSC_DataIn (void *pdev,
uint8_t epnum);
uint8_t USBD_MSC_DataOut (void *pdev,
uint8_t epnum);
uint8_t *USBD_MSC_GetCfgDesc (uint8_t speed,
uint16_t *length);
#ifdef USB_OTG_HS_CORE
uint8_t *USBD_MSC_GetOtherCfgDesc (uint8_t speed,
uint16_t *length);
#endif
uint8_t USBD_MSC_CfgDesc[USB_MSC_CONFIG_DESC_SIZ];
/**
* @}
*/
/** @defgroup MSC_CORE_Private_Variables
* @{
*/
USBD_Class_cb_TypeDef USBD_MSC_cb =
{
USBD_MSC_Init,
USBD_MSC_DeInit,
USBD_MSC_Setup,
NULL, /*EP0_TxSent*/
NULL, /*EP0_RxReady*/
USBD_MSC_DataIn,
USBD_MSC_DataOut,
NULL, /*SOF */
NULL,
NULL,
USBD_MSC_GetCfgDesc,
#ifdef USB_OTG_HS_CORE
USBD_MSC_GetOtherCfgDesc,
#endif
};
#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma data_alignment=4
#endif
#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
/* USB Mass storage device Configuration Descriptor */
/* All Descriptors (Configuration, Interface, Endpoint, Class, Vendor */
__ALIGN_BEGIN uint8_t USBD_MSC_CfgDesc[USB_MSC_CONFIG_DESC_SIZ] __ALIGN_END =
{
0x09, /* bLength: Configuation Descriptor size */
USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */
USB_MSC_CONFIG_DESC_SIZ,
0x00,
0x01, /* bNumInterfaces: 1 interface */
0x01, /* bConfigurationValue: */
0x04, /* iConfiguration: */
0xC0, /* bmAttributes: */
0x32, /* MaxPower 100 mA */
/******************** Mass Storage interface ********************/
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: */
0x00, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints*/
0x08, /* bInterfaceClass: MSC Class */
0x06, /* bInterfaceSubClass : SCSI transparent*/
0x50, /* nInterfaceProtocol */
0x05, /* iInterface: */
/******************** Mass Storage Endpoints ********************/
0x07, /*Endpoint descriptor length = 7*/
0x05, /*Endpoint descriptor type */
MSC_IN_EP, /*Endpoint address (IN, address 1) */
0x02, /*Bulk endpoint type */
LOBYTE(MSC_MAX_PACKET),
HIBYTE(MSC_MAX_PACKET),
0x00, /*Polling interval in milliseconds */
0x07, /*Endpoint descriptor length = 7 */
0x05, /*Endpoint descriptor type */
MSC_OUT_EP, /*Endpoint address (OUT, address 1) */
0x02, /*Bulk endpoint type */
LOBYTE(MSC_MAX_PACKET),
HIBYTE(MSC_MAX_PACKET),
0x00 /*Polling interval in milliseconds*/
};
#ifdef USB_OTG_HS_CORE
#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma data_alignment=4
#endif
#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
__ALIGN_BEGIN uint8_t USBD_MSC_OtherCfgDesc[USB_MSC_CONFIG_DESC_SIZ] __ALIGN_END =
{
0x09, /* bLength: Configuation Descriptor size */
USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION,
USB_MSC_CONFIG_DESC_SIZ,
0x00,
0x01, /* bNumInterfaces: 1 interface */
0x01, /* bConfigurationValue: */
0x04, /* iConfiguration: */
0xC0, /* bmAttributes: */
0x32, /* MaxPower 100 mA */
/******************** Mass Storage interface ********************/
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: */
0x00, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints*/
0x08, /* bInterfaceClass: MSC Class */
0x06, /* bInterfaceSubClass : SCSI transparent command set*/
0x50, /* nInterfaceProtocol */
0x05, /* iInterface: */
/******************** Mass Storage Endpoints ********************/
0x07, /*Endpoint descriptor length = 7*/
0x05, /*Endpoint descriptor type */
MSC_IN_EP, /*Endpoint address (IN, address 1) */
0x02, /*Bulk endpoint type */
0x40,
0x00,
0x00, /*Polling interval in milliseconds */
0x07, /*Endpoint descriptor length = 7 */
0x05, /*Endpoint descriptor type */
MSC_OUT_EP, /*Endpoint address (OUT, address 1) */
0x02, /*Bulk endpoint type */
0x40,
0x00,
0x00 /*Polling interval in milliseconds*/
};
#endif
#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma data_alignment=4
#endif
#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
__ALIGN_BEGIN static uint8_t USBD_MSC_MaxLun __ALIGN_END = 0;
#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma data_alignment=4
#endif
#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
__ALIGN_BEGIN static uint8_t USBD_MSC_AltSet __ALIGN_END = 0;
/**
* @}
*/
/** @defgroup MSC_CORE_Private_Functions
* @{
*/
/**
* @brief USBD_MSC_Init
* Initialize the mass storage configuration
* @param pdev: device instance
* @param cfgidx: configuration index
* @retval status
*/
uint8_t USBD_MSC_Init (void *pdev,
uint8_t cfgidx)
{
USBD_MSC_DeInit(pdev , cfgidx );
/* Open EP IN */
DCD_EP_Open(pdev,
MSC_IN_EP,
MSC_EPIN_SIZE,
USB_OTG_EP_BULK);
/* Open EP OUT */
DCD_EP_Open(pdev,
MSC_OUT_EP,
MSC_EPOUT_SIZE,
USB_OTG_EP_BULK);
/* Init the BOT layer */
MSC_BOT_Init(pdev);
return USBD_OK;
}
/**
* @brief USBD_MSC_DeInit
* DeInitilaize the mass storage configuration
* @param pdev: device instance
* @param cfgidx: configuration index
* @retval status
*/
uint8_t USBD_MSC_DeInit (void *pdev,
uint8_t cfgidx)
{
/* Close MSC EPs */
DCD_EP_Close (pdev , MSC_IN_EP);
DCD_EP_Close (pdev , MSC_OUT_EP);
/* Un Init the BOT layer */
MSC_BOT_DeInit(pdev);
return USBD_OK;
}
/**
* @brief USBD_MSC_Setup
* Handle the MSC specific requests
* @param pdev: device instance
* @param req: USB request
* @retval status
*/
uint8_t USBD_MSC_Setup (void *pdev, USB_SETUP_REQ *req)
{
switch (req->bmRequest & USB_REQ_TYPE_MASK)
{
/* Class request */
case USB_REQ_TYPE_CLASS :
switch (req->bRequest)
{
case BOT_GET_MAX_LUN :
if((req->wValue == 0) &&
(req->wLength == 1) &&
((req->bmRequest & 0x80) == 0x80))
{
USBD_MSC_MaxLun = USBD_STORAGE_fops->GetMaxLun();
if(USBD_MSC_MaxLun > 0)
{
USBD_CtlSendData (pdev,
&USBD_MSC_MaxLun,
1);
}
else
{
USBD_CtlError(pdev , req);
return USBD_FAIL;
}
}
else
{
USBD_CtlError(pdev , req);
return USBD_FAIL;
}
break;
case BOT_RESET :
if((req->wValue == 0) &&
(req->wLength == 0) &&
((req->bmRequest & 0x80) != 0x80))
{
MSC_BOT_Reset(pdev);
}
else
{
USBD_CtlError(pdev , req);
return USBD_FAIL;
}
break;
default:
USBD_CtlError(pdev , req);
return USBD_FAIL;
}
break;
/* Interface & Endpoint request */
case USB_REQ_TYPE_STANDARD:
switch (req->bRequest)
{
case USB_REQ_GET_INTERFACE :
USBD_CtlSendData (pdev,
&USBD_MSC_AltSet,
1);
break;
case USB_REQ_SET_INTERFACE :
USBD_MSC_AltSet = (uint8_t)(req->wValue);
break;
case USB_REQ_CLEAR_FEATURE:
/* Flush the FIFO and Clear the stall status */
DCD_EP_Flush(pdev, (uint8_t)req->wIndex);
/* Re-activate the EP */
DCD_EP_Close (pdev , (uint8_t)req->wIndex);
if((((uint8_t)req->wIndex) & 0x80) == 0x80)
{
DCD_EP_Open(pdev,
((uint8_t)req->wIndex),
MSC_EPIN_SIZE,
USB_OTG_EP_BULK);
}
else
{
DCD_EP_Open(pdev,
((uint8_t)req->wIndex),
MSC_EPOUT_SIZE,
USB_OTG_EP_BULK);
}
/* Handle BOT error */
MSC_BOT_CplClrFeature(pdev, (uint8_t)req->wIndex);
break;
}
break;
default:
break;
}
return USBD_OK;
}
/**
* @brief USBD_MSC_DataIn
* handle data IN Stage
* @param pdev: device instance
* @param epnum: endpoint index
* @retval status
*/
uint8_t USBD_MSC_DataIn (void *pdev,
uint8_t epnum)
{
MSC_BOT_DataIn(pdev , epnum);
return USBD_OK;
}
/**
* @brief USBD_MSC_DataOut
* handle data OUT Stage
* @param pdev: device instance
* @param epnum: endpoint index
* @retval status
*/
uint8_t USBD_MSC_DataOut (void *pdev,
uint8_t epnum)
{
MSC_BOT_DataOut(pdev , epnum);
return USBD_OK;
}
/**
* @brief USBD_MSC_GetCfgDesc
* return configuration descriptor
* @param speed : current device speed
* @param length : pointer data length
* @retval pointer to descriptor buffer
*/
uint8_t *USBD_MSC_GetCfgDesc (uint8_t speed, uint16_t *length)
{
*length = sizeof (USBD_MSC_CfgDesc);
return USBD_MSC_CfgDesc;
}
/**
* @brief USBD_MSC_GetOtherCfgDesc
* return other speed configuration descriptor
* @param speed : current device speed
* @param length : pointer data length
* @retval pointer to descriptor buffer
*/
#ifdef USB_OTG_HS_CORE
uint8_t *USBD_MSC_GetOtherCfgDesc (uint8_t speed,
uint16_t *length)
{
*length = sizeof (USBD_MSC_OtherCfgDesc);
return USBD_MSC_OtherCfgDesc;
}
#endif
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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