+void audio_mute_toggle(void) {
+
+ if(IOPIN0&(1<<11))
+ IOCLR0=(1<<11);
+ else
+ IOSET0=(1<<11);
+}
+
+#define AUDIO_TONE_C (7500000/(262*256))
+#define AUDIO_TONE_D (7500000/(294*256))
+#define AUDIO_TONE_E (7500000/(330*256))
+#define AUDIO_TONE_F (7500000/(349*256))
+#define AUDIO_TONE_G (7500000/(392*256))
+//#define AUDIO_TONE_A (7500000/(440*256))
+#define AUDIO_TONE_A 120
+#define AUDIO_TONE_H (7500000/(494*256))
+