mainloop.h

一个使用USB下载51单片机程序的源程序

#ifndef __MAINLOOP_H__
#define __MAINLOOP_H__

#define MAX_ENDPOINTS      		(unsigned char)0x3
#define MAX_CONTROLDATA_SIZE		8

#define EP0_TX_FIFO_SIZE   		8
#define EP0_RX_FIFO_SIZE   		8
#define EP0_PACKET_SIZE    		8

#define EP2_TX_FIFO_SIZE   		64
#define EP2_RX_FIFO_SIZE   		64
#define EP2_PACKET_SIZE    		64

#define USB_IDLE           		0
#define USB_TRANSMIT       		1
#define USB_RECEIVE        		2

#define USB_RECIPIENT            (unsigned char)0x1F
#define USB_RECIPIENT_DEVICE     (unsigned char)0x00
#define USB_RECIPIENT_INTERFACE  (unsigned char)0x01
#define USB_RECIPIENT_ENDPOINT   (unsigned char)0x02

#define USB_REQUEST_TYPE_MASK    (unsigned char)0x60
#define USB_STANDARD_REQUEST     (unsigned char)0x00
#define USB_CLASS_REQUEST        (unsigned char)0x20
#define USB_VENDOR_REQUEST       (unsigned char)0x40

#define USB_REQUEST_MASK         (unsigned char)0x0F

#define DEVICE_ADDRESS_MASK      0x7F

#define SWAP(x)   ((((x) & 0xFF) << 8) | (((x) >> 8) & 0xFF))
#define MSB(x)    (((x) >> 8) & 0xFF)
#define LSB(x)    ((x) & 0xFF)

typedef struct _device_request
{
	unsigned char	bmRequestType;
	unsigned char	bRequest;
	unsigned short wValue;
	unsigned short wIndex;
	unsigned short wLength;
} DEVICE_REQUEST;

typedef struct _control_xfer
{
	DEVICE_REQUEST DeviceRequest;
	unsigned short wLength;
	unsigned short wCount;
	unsigned char	*pData;
}CONTROL_XFER;

#endif