time-limited licence problem

Someone on this forum told me that

"there is something absolutely wrong in the way in which you incorporated your UART in the VHDL/verilog project.

if the QUARTUSII isn't giving any kind of errors while compiling your project, atleast you can check the warnings to get an idea.

I think it is something basic that you are missing out here"

about the uart problem that's why I was checking the qpf file for if anything needs to be changed or added.

I am trying to run this simple program:

int main()

{

FILE* fp;

char prompt=0;

fp = fopen("/dev/uart_0", "w+");

fprintf(fp,"AT+BTW0021D226A29E\r\n");

while(1){

prompt = getc(fp);

printf("%c", prompt);

}

fclose(fp);

return 0;

}