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142 lines
4.7 KiB
C
142 lines
4.7 KiB
C
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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/** \file
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* \section Purpose
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*
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* Mass storage %device driver implementation.
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*
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* \section Usage
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*
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* -# Enable and setup USB related pins (see pio & board.h).
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* -# Configure the memory interfaces used for Mass Storage LUNs
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* (see memories, MSDLun.h).
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* -# Instance the USB device configure descriptor as
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* MSDConfigurationDescriptors or MSDConfigurationDescriptorsOTG defined.
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* Interface number should be 0.
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* -# Configure the USB MSD %driver using MSDDriver_Initialize.
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* -# Invoke MSDDriver_StateMachine in main loop to handle all Mass Storage
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* operations.
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*/
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#ifndef MSDDRIVER_H
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#define MSDDRIVER_H
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/** \addtogroup usbd_msd
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*@{
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*/
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/*------------------------------------------------------------------------------
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* Headers
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*------------------------------------------------------------------------------*/
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#include <stdint.h>
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#include <MSDLun.h>
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#include <MSD.h>
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#include <MSDDStateMachine.h>
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#include <MSDFunction.h>
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/*------------------------------------------------------------------------------
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* Types
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*------------------------------------------------------------------------------*/
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#ifdef __ICCARM__ /* IAR */
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#pragma pack(1) /* IAR */
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#define __attribute__(...) /* IAR */
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#endif /* IAR */
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/**
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* \typedef MSDConfigurationDescriptors
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* \brief List of configuration descriptors used by a Mass Storage device driver.
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*/
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typedef struct _MSDConfigurationDescriptors {
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/** Standard configuration descriptor. */
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USBConfigurationDescriptor configuration;
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/** Mass storage interface descriptor. */
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USBInterfaceDescriptor interface;
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/** Bulk-out endpoint descriptor. */
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USBEndpointDescriptor bulkOut;
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/** Bulk-in endpoint descriptor. */
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USBEndpointDescriptor bulkIn;
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} __attribute__ ((packed)) MSDConfigurationDescriptors;
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/**
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* \typedef MSDConfigurationDescriptorsOTG
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* \brief List of configuration descriptors used by a
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* Mass Storage device driver, with OTG support.
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*/
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typedef struct _MSDConfigurationDescriptorsOTG {
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/** Standard configuration descriptor. */
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USBConfigurationDescriptor configuration;
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/* OTG descriptor */
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USBOtgDescriptor otgDescriptor;
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/** Mass storage interface descriptor. */
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USBInterfaceDescriptor interface;
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/** Bulk-out endpoint descriptor. */
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USBEndpointDescriptor bulkOut;
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/** Bulk-in endpoint descriptor. */
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USBEndpointDescriptor bulkIn;
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} __attribute__ ((packed)) MSDConfigurationDescriptorsOTG;
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#ifdef __ICCARM__ /* IAR */
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#pragma pack() /* IAR */
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#endif /* IAR */
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/*------------------------------------------------------------------------------
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* Global functions
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*------------------------------------------------------------------------------*/
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extern void MSDDriver_Initialize(
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const USBDDriverDescriptors *pDescriptors,
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MSDLun *luns, uint8_t numLuns);
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extern void MSDDriver_RequestHandler(
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const USBGenericRequest *request);
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extern void MSDDriver_ConfigurationChangeHandler(
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uint8_t cfgnum);
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/**
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* State machine for the MSD driver
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* \param pMsdDriver Pointer to MSDDriver instance.
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*/
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static inline void MSDDriver_StateMachine(void) {
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MSDFunction_StateMachine();
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}
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/**@}*/
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#endif /* #ifndef MSDDRIVER_H */
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