msc.h File Reference

USBUS Mass Storage Class functions definitions. More...

Detailed Description

USBUS Mass Storage Class functions definitions.

Author

Dylan Laduranty dylan.nosp@m..lad.nosp@m.urant.nosp@m.y@me.nosp@m.sotic.nosp@m..com

Definition in file msc.h.

#include <stdint.h>
#include "usb/usbus.h"
#include "usb/usbus/msc/scsi.h"
#include "mtd.h"

Include dependency graph for msc.h:

Go to the source code of this file.

Data Structures
struct	usbus_msc_lun
	USBUS MSC Logical Unit descriptor. More...
struct	usbus_msc_device
	USBUS MSC device interface context. More...
#define	USBUS_MSC_EP_DATA_SIZE   64
	USBUS MSC bulk data endpoint size.
#define	USBUS_MSC_EP_IN_REQUIRED_NUMOF   1
	Number of IN EPs required for the MSC interface.
#define	USBUS_MSC_EP_OUT_REQUIRED_NUMOF   1
	Number of Out EPs required for the MSC interface.
enum	usbus_msc_state_t {   WAITING , WAIT_FOR_TRANSFER , DATA_TRANSFER_IN , DATA_TRANSFER_OUT ,   GEN_CSW }
	USBUS MSC internal state machine enum. More...
typedef struct usbus_msc_lun	usbus_msc_lun_t
	USBUS MSC Logical Unit descriptor.
typedef struct usbus_msc_device	usbus_msc_device_t
	USBUS MSC device interface context.
int	usbus_msc_init (usbus_t *usbus, usbus_msc_device_t *handler)
	MSC initialization function.
int	usbus_msc_add_lun (usbus_t *usbus, mtd_dev_t *dev)
	Register a MTD device as a MSC LUN (Logical Unit Number)
int	usbus_msc_remove_lun (usbus_t *usbus, mtd_dev_t *dev)
	Unregister a MTD device as a MSC LUN.

Macro Definition Documentation

USBUS_MSC_EP_DATA_SIZE

#define USBUS_MSC_EP_DATA_SIZE   64

USBUS MSC bulk data endpoint size.

Definition at line 40 of file msc.h.

USBUS_MSC_EP_IN_REQUIRED_NUMOF

#define USBUS_MSC_EP_IN_REQUIRED_NUMOF   1

Number of IN EPs required for the MSC interface.

Definition at line 46 of file msc.h.

USBUS_MSC_EP_OUT_REQUIRED_NUMOF

#define USBUS_MSC_EP_OUT_REQUIRED_NUMOF   1

Number of Out EPs required for the MSC interface.

Definition at line 51 of file msc.h.

Enumeration Type Documentation

usbus_msc_state_t

enum usbus_msc_state_t

USBUS MSC internal state machine enum.

Enumerator
WAITING	Initial state, wait for USB setup.
WAIT_FOR_TRANSFER	Wait for a single packet transfer before sending CSW.
DATA_TRANSFER_IN	Ongoing transfer on USB MSC IN endpoint.
DATA_TRANSFER_OUT	Ongoing transfer on USB MSC OUT endpoint.
GEN_CSW	Generate CSW response to host w/ the current transfer status.

Definition at line 56 of file msc.h.

Function Documentation

usbus_msc_add_lun()

int usbus_msc_add_lun	(	usbus_t *	usbus,
		mtd_dev_t *	dev
	)

Register a MTD device as a MSC LUN (Logical Unit Number)

Parameters

[in]	usbus	USBUS context
[in]	dev	pointer to the MTD device to export

Returns

0 on success -ENOMEM, if the selected MTD device doesn't have enough memory -EAGAIN, if no more MTD devices can be exported -EBUSY, if the MTD device is already exported

usbus_msc_init()

int usbus_msc_init	(	usbus_t *	usbus,
		usbus_msc_device_t *	handler
	)

MSC initialization function.

Parameters

usbus	USBUS thread to use
handler	MSC device struct

usbus_msc_remove_lun()

int usbus_msc_remove_lun	(	usbus_t *	usbus,
		mtd_dev_t *	dev
	)

Unregister a MTD device as a MSC LUN.

Parameters

[in]	usbus	USBUS context
[in]	dev	pointer to the MTD device to export

Returns

0 on success -ENODEV, if no matching MTD device was found