help on rs232 communication niosII

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I added the RS232 on system using SOPC.

How to open RS232 Port on eclipse? If I use jtaguart as stdin and stdout the code works but if I use RS232 don't work....

Thanks in advance for help

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write down below code in your main file.

FILE *fp;

fp = fopen("----copy past path of your RS232 file from system .h-----","rb");

if(fp==NULL)

printf("\nFile /RS232 not open for writing....");

else

fprintf(fp,"%d",---data (int)which you want to write on RS232---);

fclose(fp);