/*
 * include/ubb/swuart.h - 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.
 */

#ifndef UBB_SWUART_H
#define UBB_SWUART_H

#include <stdint.h>


struct swuart_err {
	unsigned glitch;	/* unstable start bit */
	unsigned framing;	/* stop bit wasn't "1" */
	unsigned overflow;	/* buffer overflow */
};


int swuart_trx(void *out, int out_size, void *in, int in_size,
    int wait_bits, int idle_bits);

unsigned swuart_get_errors(struct swuart_err *res);
void swuart_clear_errors(void);

int swuart_open(uint32_t tx, uint32_t rx, int bps);
void swuart_close(void);

#endif /* !UBB_SWUART_H */