ul_fddir.h

一个linux下rs485驱动程序的源代码

#ifndef _UL_FDDIR_H
#define _UL_FDDIR_H

#ifdef __cplusplus
extern "C" {
#endif

#ifdef _WIN32

 #define UL_DEV_NAME "\\\\.\\UL_DRV"

 typedef HANDLE ul_fd_direct_t;

 #define UL_FD_DIRECT_INVALID INVALID_HANDLE_VALUE
 typedef long ssize_t;

 #define WITHOUT_SYS_SELECT
 #define HAS_GETOPT_LONG

 #ifdef WITH_UL_FD_INDIRECT
 #define WIN32_FILE_OVERLAPPED
 #endif /* WITH_UL_FD_INDIRECT */
 
 #if defined(WIN32_FILE_OVERLAPPED)&&!defined(WITH_UL_FD_INDIRECT)
   #error to enable WIN32_FILE_OVERLAPPED operation is neccessary compile sources with flag WITH_UL_FD_INDIRECT
 #endif

#elif defined(__DJGPP__)

 #define UL_DEV_NAME "1"

 struct ul_opdata;
 typedef struct ul_opdata *ul_fd_direct_t;
 #define UL_FD_DIRECT_INVALID (NULL)

 #define WITHOUT_SYS_SELECT
 #define UL_DRV_IN_LIB

#else /* !_WIN32 && !__DJGPP__ */

 #define UL_DEV_NAME "/dev/ulan"

 typedef int ul_fd_direct_t;

 #define UL_FD_DIRECT_INVALID (-1)

 #ifndef CONFIG_OC_UL_DRV_SYSLESS
   #define HAS_GETDELIM
   #define HAS_GETOPT_LONG
 #else
   #define UL_DRV_IN_LIB
 #endif /* CONFIG_OC_UL_DRV_SYSLESS */

#endif /* _WIN32 */

#ifdef __cplusplus
} /* extern "C"*/
#endif

#endif /*_UL_FDDIR_H*/