70 lines
1.6 KiB
C
70 lines
1.6 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) 2002 by Alan Korr
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 "config.h"
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#include <led.h>
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#define turn_on() \
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set_bit (LEDB,PBDR_ADDR+1)
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#define turn_off() \
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clear_bit (LEDB,PBDR_ADDR+1)
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#define start_timer() \
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set_bit (2,TSTR_ADDR)
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#define stop_timer() \
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clear_bit (2,TSTR_ADDR)
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#define eoi(subinterrupt) \
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clear_bit (subinterrupt,TSR2_ADDR)
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#define set_volume(volume) \
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GRA2 = volume & 0x7FFF
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void led_set_volume (unsigned short volume)
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{
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volume <<= 10;
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if (volume == 0)
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led_turn_off ();
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else if (volume == 0x8000)
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led_turn_on ();
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else
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{
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set_volume (volume);
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start_timer ();
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}
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}
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#pragma interrupt
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void IMIA2 (void)
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{
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turn_off ();
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eoi (0);
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}
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#pragma interrupt
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void OVI2 (void)
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{
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turn_on ();
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eoi (2);
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}
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