Setting up /dev/uart.debug-console output for DCSD

ios_dcsd_output_set.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/file.h>
#include <assert.h>
#include <fcntl.h>
#include <errno.h>
#include <termios.h>
#include <unistd.h>
#include <sys/event.h>

int main(){
        struct termios tty;
        int serial_fd = open ("/dev/tty.debug-console", O_RDWR | O_NOCTTY | O_SYNC);
        memset (&tty, 0, sizeof tty);

        if (tcgetattr (serial_fd, &tty) != 0)
                return -1;

        // set speed
        cfsetospeed (&tty, B115200);

        // set control options
        tty.c_cflag &= ~CRTSCTS;        // disable hardware flow control
        tty.c_cflag |= CLOCAL;          // local line - do not change "owner" of port
        tty.c_cflag &= ~CSIZE;          // clean data bits
        tty.c_cflag |= CS8;                     // set 8 data bits
        tty.c_cflag &= ~PARENB;         // clean parity bit
        tty.c_cflag &= ~CSTOPB;         // set 1 stop bits by cleaning CSTOPB

        // set output options
        tty.c_oflag &= ~OPOST;          // set raw output

        if (tcsetattr (serial_fd, TCSANOW, &tty) != 0)
                return -1;
}