ben-blinkenlights/swuart/test.c

/*
 * swuart/test.c - Software-implemented UART for UBB
 *
 * Written 2012 by Werner Almesberger
 * Copyright 2012 Werner Almesberger
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */


#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>

#include <ubb/ubb.h>

#include "swuart.h"


#define	RX	UBB_DAT0
#define	TX	UBB_DAT1


static void at_exit(void)
{
	swuart_close();
}


int main(int argc, char **argv)
{
	uint8_t buf[40];
	struct swuart_err err;
	int got, i;

	swuart_open(TX, RX, atoi(argv[1]));
	atexit(at_exit);
	while (1) {
		got = swuart_trx(argv[2], strlen(argv[2]), buf, sizeof(buf),
		    10000, 100);
		swuart_get_errors(&err);
		printf("%d (%d %d %d): ", got,
		    err.glitch, err.framing, err.overflow);
		for (i = 0; i != got; i++)
			if (buf[i] >= ' ' && buf[i] <= '~')
				printf("%c", buf[i]);
			else
				printf("\\%02o", buf[i]);
		printf("\n");
		usleep(100);
	}
}