/**********
 * Polprog 2018
 * 3 clause BSD licence
 * http://polprog.net
 */
#include <termios.h>
#include <stdio.h>
#include <unistd.h>
#include <time.h>

#include "util.h"

#define BUFSIZE 128
#define LINESIZE 26
#define SLEEP_MS 1000


void xxd(char* d){
	while(*d != 0){
		printf("%02X ", *d);
		d++;
	}
}



int main(int argc, char** argv){

  if (argc < 2) {
    printf("Usage: %s <port>\n", argv[0]);
    exit(1);
  }
  
  
  struct termios options; //serial port options

  printf("Initializing serial port: 9600 8n1\n");
  //initialize serial port

  int portfd = open_port(argv[1]);
  tcgetattr(portfd, &options);
  cfsetispeed(&options, B9600);
  cfsetospeed(&options, B9600);
  
  options.c_cflag &= ~CRTSCTS; //no hw flow control
  options.c_cflag &= ~PARENB;
  options.c_cflag &= ~CSTOPB;
  options.c_cflag &= ~CSIZE; /* Mask the character size bits */
  options.c_cflag |= CS8;    /* Select 8 data bits */
  options.c_cflag |= (CLOCAL | CREAD);
  options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG); //raw input
  fcntl(portfd, F_SETFL, FNDELAY); //enable blocking
  tcsetattr(portfd, TCSANOW, &options);

  printf("Port attributes set\n");

  char * line = malloc(LINESIZE);

  if ( line == NULL ) exit(1);

  int i = 0;

  time_t timet;
  struct tm timestruct;
  
  
  printf("Running.....\n");
  
  do{
	  timet = time(NULL);
	  timestruct = *localtime(&timet);

	  strftime(line, LINESIZE, "%d %b %y %T \n", &timestruct);
	  //printf("%s\r", line);
	  write_chars(portfd, line);


	  usleep(SLEEP_MS*1000);
	  

  }while(1);
  
  return 0;
}