Added function for setting max acceptable notes.

Limited to 10 notes at a time to avoid xruns.

MicroDexed.ino

@@ -14,14 +14,14 @@
 #include <MIDI.h>
 #include "dexed.h"
 
-#define AUDIO_MEM 32
+#define AUDIO_MEM 2
 #define AUDIO_BUFFER_SIZE 128
 #define SAMPLEAUDIO_BUFFER_SIZE 44100
 #define INIT_AUDIO_QUEUE 1
 //#define SHOW_DEXED_TIMING 1
 #define SHOW_XRUN 1
-#define SHOW_CPU_LOAD
 #define SHOW_CPU_LOAD_MSEC 5000
+#define MAX_NOTES 10
 #define TEST_MIDI 1
 #define TEST_NOTE 40
 #define TEST_VEL 60
@@ -40,7 +40,7 @@ IntervalTimer sched;
 
 void setup()
 {
-  while (!Serial) ; // wait for Arduino Serial Monitor
+  //while (!Serial) ; // wait for Arduino Serial Monitor
   Serial.begin(115200);
   Serial.println(F("MicroDexed based on https://github.com/asb2m10/dexed"));
   Serial.println(F("(c)2018 H. Wirtz"));
@@ -56,7 +56,7 @@ void setup()
   sgtl5000_1.volume(0.2);
 
   // Initialize processor and memory measurements
-#ifdef SHOW_CPU_LOAD
+#ifdef SHOW_CPU_LOAD_MSEC
   AudioProcessorUsageMaxReset();
   AudioMemoryUsageMaxReset();
 #endif
@@ -75,6 +75,7 @@ void setup()
 #endif
 
   dexed->activate();
+  dexed->setMaxNotes(MAX_NOTES);
   
 #ifdef TEST_MIDI
 
@@ -89,17 +90,18 @@ void setup()
   queue_midi_event(0x90, TEST_NOTE + 32, TEST_VEL);       // 9
   queue_midi_event(0x90, TEST_NOTE + 37, TEST_VEL);       // 10
   queue_midi_event(0x90, TEST_NOTE + 40, TEST_VEL);       // 11
-  //queue_midi_event(0x90, TEST_NOTE + 44, TEST_VEL);       // 12
-  //queue_midi_event(0x90, TEST_NOTE + 49, TEST_VEL);       // 13
-  //queue_midi_event(0x90, TEST_NOTE + 52, TEST_VEL);     // 14
-  //queue_midi_event(0x90, TEST_NOTE + 57, TEST_VEL);     // 15
-  //queue_midi_event(0x90, TEST_NOTE + 60, TEST_VEL);     // 16
+  queue_midi_event(0x90, TEST_NOTE + 44, TEST_VEL);       // 12
+  queue_midi_event(0x90, TEST_NOTE + 49, TEST_VEL);       // 13
+  queue_midi_event(0x90, TEST_NOTE + 52, TEST_VEL);       // 14
+  queue_midi_event(0x90, TEST_NOTE + 57, TEST_VEL);       // 15
+  queue_midi_event(0x90, TEST_NOTE + 60, TEST_VEL);       // 16
 #endif
 
-#ifdef SHOW_CPU_LOAD
+#ifdef SHOW_CPU_LOAD_MSEC
   sched.begin(cpu_and_mem_usage, SHOW_CPU_LOAD_MSEC * 1000);
 #endif
   Serial.println(F("setup end"));
+  cpu_and_mem_usage();
 }
 
 void loop()
@@ -107,6 +109,8 @@ void loop()
   int16_t* audio_buffer; // pointer to 128 * int16_t
   bool break_for_calculation;
 
+  while (42 == 42) // DON'T PANIC!
+  {
     audio_buffer = queue1.getBuffer();
     if (audio_buffer == NULL)
     {
@@ -134,13 +138,14 @@ void loop()
 #endif
     queue1.playBuffer();
   }
+}
 
 bool queue_midi_event(uint8_t type, uint8_t data1, uint8_t data2)
 {
   return (dexed->ProcessMidiMessage(type, data1, data2));
 }
 
-#ifdef SHOW_CPU_LOAD
+#ifdef SHOW_CPU_LOAD_MSEC
 void cpu_and_mem_usage(void)
 {
   Serial.print(F("CPU:"));

dexed.cpp

@@ -106,7 +106,7 @@ Dexed::~Dexed()
 {
   currentNote = -1;
 
-  for (uint8_t note = 0; note < MAX_ACTIVE_NOTES; ++note)
+  for (uint8_t note = 0; note < MAX_ACTIVE_NOTES; note++)
     delete voices[note].dx7_note;
 
   delete(engineMsfa);
@@ -575,6 +575,16 @@ void Dexed::notes_off(void) {
   }
 }
 
+void Dexed::setMaxNotes(uint8_t n) {
+  if (n <= MAX_ACTIVE_NOTES)
+  {
+    notes_off();
+    max_notes = n;
+    panic();
+    controllers.refresh();
+  }
+}
+
 void Dexed::set_params(void)
 {
   /*  //TRACE("Hi");

dexed.h

@@ -66,7 +66,9 @@ class Dexed
     void set_params(void);
     void GetSamples(uint16_t n_samples, int16_t* buffer);
     bool ProcessMidiMessage(uint8_t type, uint8_t data1, uint8_t data2);
-
+    void panic(void);
+    void notes_off(void);
+    void setMaxNotes(uint8_t n);
     Controllers controllers;
     VoiceStatus voiceStatus;
 
@@ -74,10 +76,9 @@ class Dexed
     //void onParam(uint8_t param_num,float param_val);
     void keyup(uint8_t pitch);
     void keydown(uint8_t pitch, uint8_t velo);
-    void panic(void);
-    void notes_off(void);
 
-    static const uint8_t MAX_ACTIVE_NOTES = 32;
+
+    static const uint8_t MAX_ACTIVE_NOTES = 16;
     uint8_t max_notes = MAX_ACTIVE_NOTES;
     ProcessorVoice voices[MAX_ACTIVE_NOTES];
     uint8_t currentNote;