usb.h

labwindows 利用I/O读写文件。

extern "C" _declspec(dllimport) int __cdecl VcReadData214x(int pipenum,unsigned char *recbuffer,int len,int waittime);

extern "C" _declspec(dllimport) int __cdecl VcWriteData214x(int pipenum,unsigned char *sendbuffer,int len,int waittime);