I follow your recommend but result is the same ! --- Harald Kipp <harald.kipp at egnite.de> wrote: > Avex, > > I think the problem is here: > > unsigned char buff[512]; > > Please use > > unsigned char *buff; > buff = NutHeapAlloc(512); > > Harald ----------------------------------------------------------------- < 每天都 Yahoo!奇摩 > www.yahoo.com.tw