#ifndef _MSC_H_
#define _MSC_H_

#include "type.h"

typedef struct {
  DWORD_t dCBWSignature;
  DWORD_t dCBWTag;
  DWORD_t dCBWDataTransferLength;
  BYTE  bmCBWFlags;
  BYTE  bCBWLUN;
  BYTE  bCBWCBLength;
  BYTE  CBWCB[16];
} msc_cbw_t;

typedef struct {
  DWORD_t dCSWSignature;
  DWORD_t dCSWTag;
  DWORD_t dCSWDataResidue;
  BYTE  bCSWStatus;
} msc_csw_t;

extern msc_cbw_t __xdata msc_cbw;
extern msc_csw_t __xdata msc_csw;

#define MSC_EP_IN  3
#define MSC_EP_OUT 3

#define CONCAT2_(a,b) (a ## b)
#define CONCAT2(a,b) CONCAT2_(a, b) 

#define MSC_EP_IN_PACKET_SIZE  (CONCAT2(PACKET_SIZE_EP, MSC_EP_IN))
#define MSC_EP_OUT_PACKET_SIZE  (CONCAT2(PACKET_SIZE_EP, MSC_EP_OUT))

#define MSC_RESET           0xFF    // Mass-storage device Reset
#define MSC_GET_MAX_LUN     0xFE    // Mass-storage device Get Max LUN

void msc_polling();

void usb_MSC_init();
void usb_MSC_req();

extern u8 __xdata msc_action;
#define MSC_HOST_NO_DATA      0x01
#define MSC_HOST_TX           0x02
#define MSC_HOST_RX           0x04
#define MSC_DEVICE_NO_DATA    0x10
#define MSC_DEVICE_RX         0x20
#define MSC_DEVICE_TX         0x40

#define MSC_HOST_SIDE(action) (action & 0x0F)
#define MSC_DEVICE_SIDE(action) (action & 0xF0)

#endif