Added option for disabling filter.

MicroDexed.ino

@@ -64,23 +64,23 @@ AudioConnection          patchCord4(filter1, 0, mixer1, 0);
 AudioConnection          patchCord5(delay1, 0, mixer1, 1);
 AudioConnection          patchCord6(delay1, 0, mixer2, 1);
 AudioConnection          patchCord7(mixer1, delay1);
+AudioConnection          patchCord8(queue1, 0, mixer1, 3); // for disabling the filter
+AudioConnection          patchCord9(mixer1, 0, mixer2, 0);
 #ifdef TEENSY_AUDIO_BOARD
 AudioOutputI2S           i2s1;           //xy=1200,432
 AudioControlSGTL5000     sgtl5000_1;     //xy=197,554
-AudioConnection          patchCord8(mixer1, 0, mixer2, 0);
-AudioConnection          patchCord9(mixer2, 0, i2s1, 0);
-AudioConnection          patchCord10(mixer2, 0, i2s1, 1);
+AudioConnection          patchCord10(mixer2, 0, i2s1, 0);
+AudioConnection          patchCord11(mixer2, 0, i2s1, 1);
 #else
 AudioOutputPT8211        pt8211_1;       //xy=1079,320
 AudioAmplifier           volume_master;           //xy=678,393
 AudioAmplifier           volume_r;           //xy=818,370
 AudioAmplifier           volume_l;           //xy=818,411
-AudioConnection          patchCord7(mixer1, 0, mixer2, 0);
-AudioConnection          patchCord8(mixer2, 0, volume_master, 0);
-AudioConnection          patchCord9(volume_master, volume_r);
-AudioConnection          patchCord10(volume_master, volume_l);
-AudioConnection          patchCord11(volume_r, 0, pt8211_1, 0);
-AudioConnection          patchCord12(volume_l, 0, pt8211_1, 1);
+AudioConnection          patchCord10(mixer2, 0, volume_master, 0);
+AudioConnection          patchCord11(volume_master, volume_r);
+AudioConnection          patchCord12(volume_master, volume_l);
+AudioConnection          patchCord13(volume_r, 0, pt8211_1, 0);
+AudioConnection          patchCord14(volume_l, 0, pt8211_1, 1);
 #endif
 // GUItool: end automatically generated code
 
@@ -241,6 +241,8 @@ void setup()
     // mixer1 is the feedback-adding mixer, mixer2 the whole delay (with/without feedback) mixer
     mixer1.gain(0, 1.0); // original signal
     mixer1.gain(1, mapfloat(effect_delay_feedback, 0, 99, 0.0, 1.0)); // amount of feedback
+    mixer1.gain(0, 0.0); // filtered signal off
+    mixer1.gain(3, 1.0); // original signal on
     mixer2.gain(0, 1.0); // original signal
     mixer2.gain(1, mapfloat(effect_delay_volume, 0, 99, 0.0, 1.0)); // delayed signal (including feedback)
 

UI.cpp

@@ -291,6 +291,18 @@ void handle_ui(void)
                   else if (enc[i].read() > ENC_FILTER_FRQ_STEPS)
                     enc[i].write(ENC_FILTER_FRQ_STEPS);
                   effect_filter_frq = enc[i].read();
+                  if (effect_filter_frq == ENC_FILTER_FRQ_STEPS)
+                  {
+                    // turn "off" filter
+                    mixer1.gain(0, 0.0); // filtered signal off
+                    mixer1.gain(3, 1.0); // original signal on
+                  }
+                  else
+                  {
+                    // turn "on" filter
+                    mixer1.gain(0, 1.0); // filtered signal on
+                    mixer1.gain(3, 0.0); // original signal off
+                  }
                   filter1.frequency(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0);
 #ifdef DEBUG
                   Serial.print(F("Setting filter frequency to: "));
@@ -486,7 +498,14 @@ void ui_show_effects_filter(void)
     lcd.show(1, 8, 4, "Oct:");
   }
 
+  if (effect_filter_frq == ENC_FILTER_FRQ_STEPS)
+  {
+    lcd.show(0, 10, 4, "OFF ");
+  }
+  else
+  {
     lcd.show(0, 10, 4, uint16_t(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.5));
+  }
   lcd.show(1, 5, 2, map(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0, 99));
   lcd.show(1, 13, 2, map(effect_filter_octave, 0, ENC_FILTER_OCT_STEPS, 0, 80));