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CherryUSB/class/msc/usbd_msc.h

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/**
* @file
* @brief USB Mass Storage Class public header
*
* Header follows the Mass Storage Class Specification
* (Mass_Storage_Specification_Overview_v1.4_2-19-2010.pdf) and
* Mass Storage Class Bulk-Only Transport Specification
* (usbmassbulk_10.pdf).
* Header is limited to Bulk-Only Transfer protocol.
*/
#ifndef _USBD_MSC_H__
#define _USBD_MSC_H__
#ifdef __cplusplus
extern "C" {
#endif
/* MSC Subclass Codes */
#define MSC_SUBCLASS_RBC 0x01
#define MSC_SUBCLASS_SFF8020I_MMC2 0x02
#define MSC_SUBCLASS_QIC157 0x03
#define MSC_SUBCLASS_UFI 0x04
#define MSC_SUBCLASS_SFF8070I 0x05
#define MSC_SUBCLASS_SCSI 0x06
/* MSC Protocol Codes */
#define MSC_PROTOCOL_CBI_INT 0x00
#define MSC_PROTOCOL_CBI_NOINT 0x01
#define MSC_PROTOCOL_BULK_ONLY 0x50
/* MSC Request Codes */
#define MSC_REQUEST_RESET 0xFF
#define MSC_REQUEST_GET_MAX_LUN 0xFE
/** MSC Command Block Wrapper (CBW) Signature */
#define MSC_CBW_Signature 0x43425355
/** Bulk-only Command Status Wrapper (CSW) Signature */
#define MSC_CSW_Signature 0x53425355
/** MSC Command Block Status Values */
#define CSW_STATUS_CMD_PASSED 0x00
#define CSW_STATUS_CMD_FAILED 0x01
#define CSW_STATUS_PHASE_ERROR 0x02
/*Length of template descriptor: 23 bytes*/
#define MSC_DESCRIPTOR_LEN (9 + 7 + 7)
// clang-format off
#ifndef SUPPORT_USB_HS
#define MSC_DESCRIPTOR_INIT(bFirstInterface, out_ep, in_ep,str_idx) \
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/* Interface */ \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bFirstInterface, /* bInterfaceNumber */ \
0x00, /* bAlternateSetting */ \
0x02, /* bNumEndpoints */ \
USB_DEVICE_CLASS_MASS_STORAGE, /* bInterfaceClass */ \
MSC_SUBCLASS_SCSI, /* bInterfaceSubClass */ \
MSC_PROTOCOL_BULK_ONLY, /* bInterfaceProtocol */ \
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str_idx, /* iInterface */ \
0x07, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
out_ep, /* bEndpointAddress */ \
0x02, /* bmAttributes */ \
0x40, 0x00, /* wMaxPacketSize */ \
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0x00, /* bInterval */ \
0x07, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
in_ep, /* bEndpointAddress */ \
0x02, /* bmAttributes */ \
0x40, 0x00, /* wMaxPacketSize */ \
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0x00 /* bInterval */
#else
#define MSC_DESCRIPTOR_INIT(bFirstInterface, out_ep, in_ep,str_idx) \
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/* Interface */ \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bFirstInterface, /* bInterfaceNumber */ \
0x00, /* bAlternateSetting */ \
0x02, /* bNumEndpoints */ \
USB_DEVICE_CLASS_MASS_STORAGE, /* bInterfaceClass */ \
MSC_SUBCLASS_SCSI, /* bInterfaceSubClass */ \
MSC_PROTOCOL_BULK_ONLY, /* bInterfaceProtocol */ \
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str_idx, /* iInterface */ \
0x07, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
out_ep, /* bEndpointAddress */ \
0x02, /* bmAttributes */ \
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0x00, 0x02, /* wMaxPacketSize */ \
0x00, /* bInterval */ \
0x07, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
in_ep, /* bEndpointAddress */ \
0x02, /* bmAttributes */ \
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0x00, 0x02, /* wMaxPacketSize */ \
0x00 /* bInterval */
#endif
// clang-format on
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void usbd_msc_class_init(uint8_t out_ep, uint8_t in_ep);
void usbd_msc_get_cap(uint8_t lun, uint32_t *block_num, uint16_t *block_size);
int usbd_msc_sector_read(uint32_t sector, uint8_t *buffer, uint32_t length);
int usbd_msc_sector_write(uint32_t sector, uint8_t *buffer, uint32_t length);
#ifdef __cplusplus
}
#endif
#endif /* USB_MSC_H_ */