myport.h

来自「Device IO Control MyPort.zip」· C头文件 代码 · 共 20 行

#if !defined(MYPORT_H__)
#define MYPORT_H__

// 设备类型定义
// 0-32767被Microsoft占用，用户自定义可用32768-65535
#define FILE_DEVICE_MYPORT	0x0000f000

// I/O控制码定义
// 0-2047被Microsoft占用，用户自定义可用2048-4095 
#define MYPORT_IOCTL_BASE 0xf00

#define IOCTL_MYPORT_READ_BYTE		CTL_CODE(FILE_DEVICE_MYPORT, MYPORT_IOCTL_BASE, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_MYPORT_WRITE_BYTE		CTL_CODE(FILE_DEVICE_MYPORT, MYPORT_IOCTL_BASE+1, METHOD_BUFFERED, FILE_ANY_ACCESS)
// #define IOCTL_MYPORT_READ_WORD		CTL_CODE(FILE_DEVICE_MYPORT, MYPORT_IOCTL_BASE+2, METHOD_BUFFERED, FILE_ANY_ACCESS)
// #define IOCTL_MYPORT_WRITE_WORD		CTL_CODE(FILE_DEVICE_MYPORT, MYPORT_IOCTL_BASE+3, METHOD_BUFFERED, FILE_ANY_ACCESS)
// #define IOCTL_MYPORT_READ_DWORD		CTL_CODE(FILE_DEVICE_MYPORT, MYPORT_IOCTL_BASE+4, METHOD_BUFFERED, FILE_ANY_ACCESS)
// #define IOCTL_MYPORT_WRITE_DWORD		CTL_CODE(FILE_DEVICE_MYPORT, MYPORT_IOCTL_BASE+5, METHOD_BUFFERED, FILE_ANY_ACCESS)

#endif	// MYPORT_H__