2.3-InternetRadio/nutos/nut/boot/appload/debug.c

/*
 * Copyright (C) 2003-2005 by egnite Software GmbH. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

/*
 * $Log$
 * Revision 1.2  2005/11/03 15:05:10  haraldkipp
 * Copyright added.
 * Output of longs added.
 * Check UART ready bit after writing the data register. This avoids
 * interference by the application while the last character is transmitted.
 *
 */

#ifdef NUTDEBUG

#include <avr/io.h>

#include "debug.h"
#include "utils.h"


static char buf[9];
static char hexdigit[] = "0123456789ABCDEF";

void Debug(char *cp)
{
    while (*cp) {
        UDR0 = *cp;
        while ((UCSR0A & _BV(UDRE)) == 0);
        if (*cp++ == '\n') {
            Debug("\r");
        }
    }
}

void DebugUShort(unsigned short val)
{
    register unsigned char i;

    for (i = 4; i-- > 0;) {
        buf[i] = hexdigit[val & 0x0F];
        val >>= 4;
    }
    buf[4] = 0;
    Debug(buf);
}

void DebugULong(unsigned long val)
{
    register unsigned char i;

    for (i = 8; i-- > 0;) {
        buf[i] = hexdigit[val & 0x0F];
        val >>= 4;
    }
    buf[8] = 0;
    Debug(buf);
}

void DebugInit(void)
{
    UBRR0L = 7;
    UCSR0B = (1 << RXEN) | (1 << TXEN);
    Delay(10);
}

#endif