how to set char by uart use fopen and fclose ?

--- Quote Start ---

originally posted by yangroot@Oct 7 2005, 09:23 PM

#include "system.h"# include "stdio.h"

--- Quote End ---

Looking at your code, these should be the only include files you need.

--- Quote Start ---

originally posted by yangroot+oct 7 2005, 09:23 pm--><div class='quotetop'>quote (yangroot @ oct 7 2005, 09:23 pm)</div>

--- quote start ---

../otl350a.c: in function `main&#39;:

../otl350a.c:28: warning: unused variable `u_p&#39;

../otl350a.c:28: warning: unused variable `data_r_&#39;

../otl350a.c:30: warning: unused variable `fd0&#39;

../otl350a.c:76:3: warning: no newline at end of file[/b]

--- quote end ---

this looks like it&#39;s from something other than what you posted.

<!--quotebegin-yangroot@Oct 7 2005, 09:23 PM

linking otl350a.elf...

obj/otl350a.o(.text+0x28): in function `main&#39;:

../otl350a.c:49: undefined reference to `fopen&#39;

obj/otl350a.o(.text+0x50):../otl350a.c:52: undefined reference to `fclose&#39;

--- Quote End ---

I think you&#39;re missing a system library. It should show up as "YourProjectName_syslib" in the project list, and it should be set as the system library in your project&#39;s properties.