30c3382a48
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23817 a1c6a512-1295-4272-9138-f99709370657
109 lines
3 KiB
C
109 lines
3 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 by Catalin Patulea
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "registers.h"
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#include "arm.h"
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#include "ipc.h"
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#include "dma.h"
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#include "audio.h"
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void main(void) {
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TCR = 1 << 4; /* Stop the timer. */
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IMR = 0xffff; /* Unmask all interrupts. */
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IFR = IFR; /* Clear all pending interrupts. */
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asm(" rsbx INTM"); /* Globally enable interrupts. */
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audiohw_init();
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dma_init();
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#if defined(HAVE_DEBUG)
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debugf("DSP inited...");
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#endif
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for (;;) {
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asm(" IDLE 1");
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asm(" NOP");
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}
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}
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/* Obsoleted/testing snippets: */
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#ifdef DATA_32_SINE
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for (i = 0; i < 32; i++) {
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double ratio = ((double)i)/32.0;
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double rad = 3.0*3.141592*ratio;
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double normal = sin(rad);
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double scaled = 32767.0*(normal);
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data[2*i + 0] = -(signed short)scaled;
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data[2*i + 1] = (signed short)scaled;
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}
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#endif
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#ifdef MANUAL_TRANSFER
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register signed short *p;
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debugf("starting write");
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i = 0;
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p = data;
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SPSA0 = 0x01;
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for (;;) {
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while ((SPSD0 & (1 << 1)) == 0);
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DXR20 = *p++; // left channel
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DXR10 = *p++; // right channel
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if (++i == 32) {
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p = data;
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i = 0;
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}
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}
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#endif
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#ifdef INIT_MSG
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/* Copy codec init data (before debugf, which clobbers status). */
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if (status.msg != MSG_INIT) {
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debugf("No init message (%04x: %04x %04x %04x %04x instead)",
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(unsigned short)&status,
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((unsigned short *)&status)[0],
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((unsigned short *)&status)[1],
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((unsigned short *)&status)[2],
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((unsigned short *)&status)[3]);
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return;
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}
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memcpy(&init, (void *)&status.payload.init, sizeof(init));
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#endif
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#ifdef IPC_SIZES
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debugf("sizeof(ipc_message)=%uw offset(ipc_message.payload)=%uw",
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sizeof(struct ipc_message), (int)&((struct ipc_message*)0)->payload);
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#endif
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#ifdef VERBOSE_INIT
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debugf("codec started with PCM at SDRAM offset %04x:%04x",
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sdem_addrh, sdem_addrl);
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#endif
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#ifdef SPIKE_DATA
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for (i = 0; i < 0x2000; i++) {
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data[2*i ] = data[2*i+1] = ((i % 32) == 0) * 32767;
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}
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#endif
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