/* A simple program that recognizes the characters 't' and 'v' */
#include <stdio.h>
#include <string.h>
int main ()
{
    char* msg = "Detected the character 't'.\n";
    FILE* fp;
    char prompt = 0;
    fp = fopen ("/dev/uart1", "r+"); //Open file for reading and writing
    if (fp)
    {
        while (prompt != 'v')
        { // Loop until we receive a 'v'.
            prompt = getc(fp); // Get a character from the UART.
            if (prompt == 't')
            { // Print a message if character is 't'.
                fwrite (msg, strlen (msg), 1, fp);
            }
        }
        fprintf(fp, "Closing the UART file.\n");
        fclose (fp);
    }
    return 0;
}