DD2-monitor/serial/t.c

#include  <stdio.h>
#include  <stdlib.h>
#include  <time.h>
#include  <unistd.h>			//Used for UART
#include  <fcntl.h>			//Used for UART
#include  <errno.h>

#include  "serial.h"

int	verbosity;

/* ----------------------------------------------------- */
int openserial(char *dev)
{
int	uart;

fprintf(stderr, "%s ( %s )\n", __func__, dev);
uart = open(dev, O_RDONLY | O_NOCTTY);
if (uart < 0)
	{
	perror("unable to open uart");
	exit(1);
	}
return uart;
}
/* ----------------------------------------------------- */

int main (int argc, char *argv[])
{
int		serial_in, foo;
unsigned char	byte;

if (2 != argc) {
	fprintf(stderr, "give me a device name, please.\n");
	return 2;
	}

serial_in = openserial(argv[1]);
fprintf(stderr, "openserial -> %d\n", serial_in);

for (;;) {
	foo = read(serial_in, &byte, 1);
	if (1 != foo) {
		fprintf(stderr, "get byte : got %d, err is %d\n", foo, errno);
		}
	else	{
		printf("%9ld    $%02x  ", time(NULL), byte);
		if (isprint(byte)) putchar(byte);
		puts("");
		}
	}

return 0;
}

/* ----------------------------------------------------- */