fixed compiler warnings (#273)

3 files changed, 30 insertions, 17 deletions

diff --git a/quantum/audio/audio.h b/quantum/audio/audio.h
index d1ccfdb824..89769507e1 100644
--- a/quantum/audio/audio.h
+++ b/quantum/audio/audio.h
@@ -50,8 +50,8 @@ void decrease_vibrato_strength(float change);
 // Polyphony functions
 
 void set_polyphony_rate(float rate);
-void enable_polyphony();
-void disable_polyphony();
+void enable_polyphony(void);
+void disable_polyphony(void);
 void increase_polyphony_rate(float change);
 void decrease_polyphony_rate(float change);
 
@@ -61,7 +61,7 @@ void set_tempo(float tempo);
 void increase_tempo(uint8_t tempo_change);
 void decrease_tempo(uint8_t tempo_change);
 
-void audio_init();
+void audio_init(void);
 
 #ifdef PWM_AUDIO
 void play_sample(uint8_t * s, uint16_t l, bool r);
diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c
index 98631f0cb4..330ffb803a 100644
--- a/quantum/audio/voices.c
+++ b/quantum/audio/voices.c
@@ -1,4 +1,5 @@
 #include "voices.h"
+#include "stdlib.h"
 
 // these are imported from audio.c
 extern uint16_t envelope_index;
@@ -27,26 +28,31 @@ float voice_envelope(float frequency) {
         case default_voice:
             note_timbre = TIMBRE_50;
             polyphony_rate = 0;
-        break;
+	        break;
+
         case butts_fader:
             polyphony_rate = 0;
             switch (compensated_index) {
                 case 0 ... 9:
                     frequency = frequency / 4;
                     note_timbre = TIMBRE_12;
-                break;
+	                break;
+
                 case 10 ... 19:
                     frequency = frequency / 2;
                     note_timbre = TIMBRE_12;
-                break;
+	                break;
+
                 case 20 ... 200:
                     note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
-                break;
+	                break;
+
                 default:
                     note_timbre = 0;
-                break;
+                	break;
             }
-        break;
+    	    break;
+
         case octave_crunch:
             polyphony_rate = 0;
             switch (compensated_index) {
@@ -56,17 +62,20 @@ float voice_envelope(float frequency) {
                     frequency = frequency / 2;
                     note_timbre = TIMBRE_12;
                 break;
+
                 case 10 ... 19:
                 case 25 ... 29:
                 case 33 ... 35:
                     frequency = frequency * 2;
                     note_timbre = TIMBRE_12;
-                break;
+	                break;
+
                 default:
                     note_timbre = TIMBRE_12;
-                break;
+                	break;
             }
-        break;
+	        break;
+
         case duty_osc:
             // This slows the loop down a substantial amount, so higher notes may freeze
             polyphony_rate = 0;
@@ -78,13 +87,17 @@ float voice_envelope(float frequency) {
                     // note_timbre = (sin((float)compensated_index/10000*OCS_SPEED) * OCS_AMP / 2) + .5;
                     // triangle wave is a bit faster
                     note_timbre = (float)abs((compensated_index*OCS_SPEED % 3000) - 1500) * ( OCS_AMP / 1500 ) + (1 - OCS_AMP) / 2;
-                break;
+                	break;
             }
-        break;
+	        break;
+
         case duty_octave_down:
             polyphony_rate = 0;
             note_timbre = (envelope_index % 2) * .125 + .375 * 2;
-        break;
+	        break;
+
+		default:
+   			break;
     }
 
     return frequency;
diff --git a/quantum/audio/voices.h b/quantum/audio/voices.h
index 5aa99f4b1d..2822fb6acc 100644
--- a/quantum/audio/voices.h
+++ b/quantum/audio/voices.h
@@ -20,7 +20,7 @@ typedef enum {
 } voice_type;
 
 void set_voice(voice_type v);
-void voice_iterate();
-void voice_deiterate();
+void voice_iterate(void);
+void voice_deiterate(void);
 
 #endif
\ No newline at end of file