/* Program to flash the hacklace */
/* Published under the terms and conditions of the WTFPL 2 */
/* Copyright (c) 2013 by Robert Clausecker */

#include <termios.h>
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) {
	int tty, i;
	FILE *conf;
	char buffer[80];
	struct termios termios;

	if (argc != 3) {
		fprintf(stderr,"Usage: %s tty config\n",argv[0]);
		return EXIT_FAILURE;
	}

	tty = open(argv[1],O_WRONLY|O_NOCTTY);

	if (tty == -1) {
		perror("Can't open terminal device");
		return EXIT_FAILURE;
	}

	conf = fopen(argv[2],"r");

	if (conf == NULL) {
		perror("Can't open config file");
		return EXIT_FAILURE;
	}

	tcgetattr(tty,&termios);
	cfsetspeed(&termios,B2400);
	tcsetattr(tty,TCSANOW,&termios);

	write(tty,"\033HL",3);
	i = fread(buffer,1,80,conf);

	while (i) {
		write(tty,buffer,i);
		i = fread(buffer,1,80,conf);
	}

	write(tty,"\033",1);

	return EXIT_SUCCESS;
}