#include <fcntl.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <termios.h>
#include <linux/serio.h>



int main(void) {
	struct termios attribs;
	speed_t speed;
	int serial_port;

	if((serial_port = open("/dev/ttyUSB0", O_RDONLY | O_NONBLOCK)) < 0) {
		printf("Error opening /dev/ttyUSB0\n");
		return EXIT_FAILURE;
	}

	if(tcgetattr(serial_port, &attribs) < 0) {
		printf("Error creating termios struct\n");
		return EXIT_FAILURE;
	}

	/*Set speed */
	cfsetispeed (&attribs, B115200);
	cfsetospeed (&attribs, B115200);

    	tcsetattr(serial_port, TCSANOW, &attribs);
	
	/*Set line discipline*/
	int ldisc = 2;
	ioctl(serial_port,TIOCSETD,&ldisc);

	/*Set device parameters for identification*/
	unsigned long devt = (0x40) | (0xF0<<8) | (0xF0<<16);
	ioctl(serial_port,SPIOCSTYPE,&devt);

	printf("\n...Reading from /dev/ttyUSB0... \n\nPress \"ctrl+c\" to quit.\n");

	/*Read device for receive commands*/
	read(serial_port,NULL,0);
	
	close(serial_port);

    return EXIT_SUCCESS;
}