Use 7 voices

voice.c

@@ -24,7 +24,7 @@ struct {
      .dac = {.channel = 6, .offset = 52, .scale = 8382}},
 };
 
-uint8_t voice_map[NUM_VOICES] = {2, 3, 4, 5, 6, 7};
+uint8_t voice_map[NUM_VOICES] = {1, 2, 3, 4, 5, 6, 7};
 
 struct gate *gate(uint8_t v) {
 	if (v >= NUM_VOICES) {

voice.h

@@ -5,7 +5,7 @@
 
 enum { NUM_SEMITONES = 12 };
 
-enum { NUM_VOICES = 6 };
+enum { NUM_VOICES = 7 };
 
 #define for_each_voice(var) for (uint8_t var = 0; var < NUM_VOICES; var++)