1 files changed, 51 insertions, 0 deletions

diff --git a/firmware/asm/beep.c b/firmware/asm/beep.c
new file mode 100644
index 0000000000..0314e32715
--- /dev/null
+++ b/firmware/asm/beep.c
@@ -0,0 +1,51 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (c) 2011 Michael Sevakis
+ *
+ * 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.
+ *
+ ****************************************************************************/
+#if defined(CPU_ARM)
+#include "arm/beep.c"
+#elif defined (CPU_COLDFIRE)
+#include "m68k/beep.c"
+#else /* Generic */
+
+static FORCE_INLINE void beep_generate(int16_t *out, int count,
+                                       uint32_t *phase, uint32_t step,
+                                       int16_t amplitude)
+{
+    uint32_t ph = *phase;
+
+    do
+    {
+        int16_t amp = amplitude;
+
+        if (ph > UINT32_MAX / 2)
+            amp = -amp;
+
+        *out++ = amp;
+        *out++ = amp;
+
+        ph += step;
+    }
+    while (--count > 0);
+
+    *phase = ph;
+}
+
+#define BEEP_GENERIC
+#endif /* CPU_* */