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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Catalin Patulea
* Copyright (C) 2009 by Karl Kurbjun
*
* 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.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "arm.h"
#include "registers.h"
#include "ipc.h"
#include "dma.h"
volatile struct ipc_message status;
volatile short int0_count;
#if defined(HAVE_DEBUG)
static int acked;
#endif
interrupt void handle_int0(void) {
IFR = 1;
int0_count++;
#if defined(HAVE_DEBUG)
acked = 1;
#endif
waiting = 0;
if(dma0_stopped==0)
{
if(!(DMPREC&0x01))
{
/* Give the HPIB access to refill first */
rebuffer();
/* Start the MCBSP DMA */
DMPREC |= 1;
audiohw_start();
}
else
{
rebuffer();
}
}
else
{
rebuffer();
}
}
#if defined(HAVE_DEBUG)
static void startack(void)
{
acked = 0;
int_arm();
}
static void waitack(void)
{
/* Wait until ARM has picked up data. */
while (!acked)
{
/* IDLE alone never seems to wake up :( */
asm(" IDLE 1");
asm(" NOP");
}
}
void debugf(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
status.msg = MSG_DEBUGF;
vsnprintf((char *)status.payload.debugf.buffer, sizeof(status), fmt, args);
va_end(args);
startack();
waitack();
acked = 2;
}
#endif
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