1 files changed, 68 insertions, 0 deletions

diff --git a/firmware/led.c b/firmware/led.c
new file mode 100644
index 0000000000..e8922e7891
--- /dev/null
+++ b/firmware/led.c
@@ -0,0 +1,68 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Alan Korr
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <led.h>
+
+#define turn_on() \
+  set_bit (LEDB,PBDR+1)
+
+#define turn_off() \
+  clear_bit (LEDB,PBDR+1)
+
+#define start_timer() \
+  set_bit (2,ITUTSTR)
+
+#define stop_timer() \
+  clear_bit (2,ITUTSTR)
+
+#define eoi(subinterrupt) \
+  clear_bit (subinterrupt,ITUTSR2)
+
+#define set_volume(volume) \
+  HI(ITUGRA2) = volume & 0x7FFF
+
+
+void led_set_volume (unsigned short volume)
+  {
+    volume <<= 10;
+    if (volume == 0)
+      led_turn_off ();
+    else if (volume == 0x8000) 
+      led_turn_on ();
+    else
+      {
+            set_volume (volume);
+        start_timer ();
+      }
+  }
+
+#pragma interrupt
+void IMIA2 (void)
+  {
+    turn_off ();
+    eoi (0);
+  }
+
+#pragma interrupt
+void OVI2 (void)
+  {
+    turn_on ();
+    eoi (2);
+  }
+