usb_extern.h

学习资料S12源程序UF32 USB MCU方测试程序 CW环境

/*****************************************************************************/
#include	"frDefs.h"				// 宏定义头文件
//*********************************************************************
//USB状态外部声明头文件
//全局变量的声明
#ifndef _USBMS_G_DECL_
#define _USBMS_G_DECL_ extern
#endif
_USBMS_G_DECL_ UINT8  	gUSBFullSpeed;		// 0=HS, 1=FS
_USBMS_G_DECL_ UINT16 	gUSBPacketSize;		// USB包的大小
_USBMS_G_DECL_ UINT8		gUSBMSCBWTag[4];	// dgUSBMSCBWTag
_USBMS_G_DECL_ UINT8		gUSBMSLogicDrive;	// CBWLUN
_USBMS_G_DECL_ UINT8		gUSBMSCSWResult;	// CSW返回接收CBW包的结果								
_USBMS_G_DECL_ UINT8		*gpbCBWPacket;		// CBW包的存放区的首地址
_USBMS_G_DECL_ UINT16 	*gpwCBWPacket;
_USBMS_G_DECL_ UINT8 	  gAppEvent;				// PC方发数据到设备方的标志

_USBMS_G_DECL_ UINT8		gUSBMSStatus;			// CBW和CSW的相关标志位
  #define bitProcessCBW	  7
  #define	bitSendCSW    	4

//USB CBW命令
#define kCBWTotalLength	0x1f	// CBW total length 
#define kCBWTag0			  4		  // dgUSBMSCBWTage byte 0 position
#define kCBWTag1			  5		  // dgUSBMSCBWTage byte 0 position
#define kCBWTag2		  	6		  // dgUSBMSCBWTage byte 0 position
#define kCBWTag3			  7		  // dgUSBMSCBWTage byte 0 position
#define kCBWXferLength0	8		  // dCBWDataTransferLength byte 0 position
#define kCBWXferLength1	9	  	// dCBWDataTransferLength byte 1 position
#define kCBWXferLength2	10		// dCBWDataTransferLength byte 2 position
#define kCBWXferLength3	11		// dCBWDataTransferLength byte 3 position
#define kCBWFlags			  12		// bmCBWFlags byte position
#define kCBWDirection		0x80	// direction
#define kHost2Device		0	  	// 0-host to device, 1-device to host
#define kCBWLUN				  13		// bCBWLUN byte position
#define kCBWCBLength		14		// bCBWCBLength byte position
#define kCBWSCSICommand	15		// CBWCB byte position

//USB命令状态
#define kCSWLength			0x0d
#define	kCSWPass			  0		// command completed successfully
#define	kCSWFailed			1		// command failed

//usbms_extern.h 头文件结束
// *********************************************************************************