globals.h

Cy68013的应用——USB2.0接口转IDE、CF卡接口

//-----------------------------------------------------------------------------
//   File:      globals.h
//   Contents:   global variables used by the firmware
//
//   indent 3.  NO TABS!
//
//   Copyright (c) 2001 Cypress Semiconductor
//
// $Workfile: GLOBALS.H $
// $Date: 7/23/02 5:20p $
// $Revision: 5 $
//-----------------------------------------------------------------------------
extern BYTE   AlternateSetting;   // Alternate settings
extern BYTE   Configuration;      // Current configuration


extern WORD   pConfigDscr;
extern WORD   pOtherConfigDscr;  

extern WORD wPacketSize;
// Globals for storing per-LUN information.  Data about each LUN (Logical Unit) is stored
// in two different places:  1) A struct in DATA space for storing drive geometry, capacity,
// etc., 2) a bit field in the BIT DATA area for storing device flags that we need to access
// efficiently.  For each request (CBW), the firmware will swap in the appropriate LUN
// information

// The flags for the LUN that is currently being accessed.
extern BYTE bdata ActiveLunBits;
// Storage area for LUN0 and LUN1 flags
extern BYTE bdata LunBits[];

// bit defines for the active LUN
extern bit bDevicePresent;
extern bit bMasterSlave ;   // 0 == device0 (master), 1 == device1 (slave)

extern bit bScsi;
extern bit bExtAddrSupport;
extern bit bCompactFlash;

extern BYTE currentLunNum;

// Device info for the Active LUN
extern DEVICE_CONFIG_DATA ActiveLunConfigData;
// Sorage area for the LUN0 and LUN1 device info
extern DEVICE_CONFIG_DATA DeviceConfigData[];

// this variable is used to store the number of devices attached to the IDE bus.  This is what
// we will use to forumlate our response to the GET MAX LUN Mass Storage Class request.
extern BYTE deviceCount;

extern bit  bSkipPinReset;
extern bit  bFirstTime;
extern bit  bSwitchToHighSpeed;
extern bit  bHighSpeedEnabled;
extern xdata BYTE halfKBuffer[];

extern WORD cbwTagLow;          // Tag from the most recent CBW packet
extern WORD cbwTagHi;
extern BYTE currentState;

extern DWORD dataTransferLen;
extern volatile BYTE seconds;
extern volatile BYTE hertz61ticks;

extern bit noFlashMedia;
extern bit directionIn;
extern bit phaseErrorState;

extern bit useUdma;
extern bit bShortPacketSent;
extern BYTE udmaErrorCount;

extern bit Sleep;