Date: Fri, 09 Sep 2005 15:10:45 +0200 From: Helge Preuss <helge.preuss@gmx.net> To: vittorio <vdemart1@tin.it> Cc: freebsd-questions@freebsd.org Subject: Re: Fwd: Re: C program to write to the com port - RESOLVED Message-ID: <432189D5.2070307@gmx.net> In-Reply-To: <200509091353.49269.vdemart1@tin.it> References: <200509091353.49269.vdemart1@tin.it>
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vittorio wrote: >[...] >SerialPort.C: In function `int main(int, char*)': >SerialPort.C:62: error: invalid conversion from `unsigned char*' to `char*' >SerialPort.C:62: error: initializing argument 1 of `int snprintf(char*, >size_t, const char*, ...)' >SerialPort.C:66: error: `err' undeclared (first use this function) >SerialPort.C:66: error: (Each undeclared identifier is reported only once for >each function it appears in.) >SerialPort.C:69:3: warning: no newline at end of file > >Could you please help to straighten things up? > > A relevant line from man snprintf: > int snprintf(char *str, size_t size, const char *format, ...); So you might want to change line 27 to char buf[4]; and perhaps line 62 too: snprintf(buf,4,"%c%c%c%c",(char)0xff,0x00,0x01,0); another relevant line from man err: > #include <err.h> HTH, haven't tried it Helge
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