Add deubg module that prints everyting on the bus.

src/debug_module/debug_module.ino

@@ -0,0 +1,97 @@
+#include <mcp2515.h>
+#include "pitches.h"
+
+MCP2515 mcp2515(10);
+
+uint16_t id = 0b01100000011;
+// type: 3 (other)
+// module-id: 3
+
+int soundpin = 9;
+
+
+void setup() {
+  Serial.begin(9600);
+  mcp2515.reset();
+  mcp2515.setBitrate(CAN_50KBPS);
+  mcp2515.setNormalMode();
+  Serial.println("begin");
+
+  // play_sound();
+}
+
+void loop() {
+  char message[9];
+  message[8] = '\0';
+
+  // Send text typed in the console over the can network
+  struct can_frame send_frame;
+  int read = Serial.readBytesUntil('\n', send_frame.data, 8);
+  if (read > 0) {
+    send_frame.can_id = id;
+    send_frame.can_dlc = read;
+    mcp2515.sendMessage(&send_frame);
+    Serial.println("sent");
+  }
+
+  // Read from the can bus
+  struct can_frame receive_frame;
+  if (mcp2515.readMessage(&receive_frame) == MCP2515::ERROR_OK) {
+    Serial.print("[prio-bit: ");
+    Serial.print(receive_frame.can_id >> 10 & 0b00000001);
+    Serial.print("\tmodule-type: ");
+    Serial.print(receive_frame.can_id >> 8 & 0b00000011);
+    Serial.print("\tmodule-id: ");
+
+    Serial.print(receive_frame.can_id & 0b11111111);
+    Serial.print("]\tLength: ");
+    
+    Serial.print(receive_frame.can_dlc, HEX); // print DLC
+    Serial.print("\t Body: ");
+
+    // First byte has the type of the message
+
+    // print per byte in hex
+    for (int i = 0; i < receive_frame.can_dlc; i++)  { // print the data
+      Serial.print(receive_frame.data[i], HEX);
+      Serial.print(" ");
+    }
+    Serial.println("");
+
+    // print all
+    //memcpy(message, receive_frame.data, 8);
+    //Serial.println(message);
+  }
+}
+
+// notes in the melody:
+int melody[] = {
+  NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
+};
+
+// note durations: 4 = quarter note, 8 = eighth note, etc.:
+int noteDurations[] = {
+  4, 8, 8, 4, 4, 4, 4, 4
+};
+
+void play_melody() {
+  // iterate over the notes of the melody:
+  for (int thisNote = 0; thisNote < 8; thisNote++) {
+
+    // to calculate the note duration, take one second divided by the note type.
+    //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
+    int noteDuration = 1000 / noteDurations[thisNote];
+    tone(soundpin, melody[thisNote], noteDuration);
+
+    // to distinguish the notes, set a minimum time between them.
+    // the note's duration + 30% seems to work well:
+    int pauseBetweenNotes = noteDuration * 1.30;
+    delay(pauseBetweenNotes);
+    // stop the tone playing:
+    noTone(soundpin);
+  }
+}
+
+void play_sound() {
+
+}

src/debug_module/pitches.h

@@ -0,0 +1,93 @@
+/*************************************************
+ * Public Constants
+ *************************************************/
+
+#define NOTE_B0  31
+#define NOTE_C1  33
+#define NOTE_CS1 35
+#define NOTE_D1  37
+#define NOTE_DS1 39
+#define NOTE_E1  41
+#define NOTE_F1  44
+#define NOTE_FS1 46
+#define NOTE_G1  49
+#define NOTE_GS1 52
+#define NOTE_A1  55
+#define NOTE_AS1 58
+#define NOTE_B1  62
+#define NOTE_C2  65
+#define NOTE_CS2 69
+#define NOTE_D2  73
+#define NOTE_DS2 78
+#define NOTE_E2  82
+#define NOTE_F2  87
+#define NOTE_FS2 93
+#define NOTE_G2  98
+#define NOTE_GS2 104
+#define NOTE_A2  110
+#define NOTE_AS2 117
+#define NOTE_B2  123
+#define NOTE_C3  131
+#define NOTE_CS3 139
+#define NOTE_D3  147
+#define NOTE_DS3 156
+#define NOTE_E3  165
+#define NOTE_F3  175
+#define NOTE_FS3 185
+#define NOTE_G3  196
+#define NOTE_GS3 208
+#define NOTE_A3  220
+#define NOTE_AS3 233
+#define NOTE_B3  247
+#define NOTE_C4  262
+#define NOTE_CS4 277
+#define NOTE_D4  294
+#define NOTE_DS4 311
+#define NOTE_E4  330
+#define NOTE_F4  349
+#define NOTE_FS4 370
+#define NOTE_G4  392
+#define NOTE_GS4 415
+#define NOTE_A4  440
+#define NOTE_AS4 466
+#define NOTE_B4  494
+#define NOTE_C5  523
+#define NOTE_CS5 554
+#define NOTE_D5  587
+#define NOTE_DS5 622
+#define NOTE_E5  659
+#define NOTE_F5  698
+#define NOTE_FS5 740
+#define NOTE_G5  784
+#define NOTE_GS5 831
+#define NOTE_A5  880
+#define NOTE_AS5 932
+#define NOTE_B5  988
+#define NOTE_C6  1047
+#define NOTE_CS6 1109
+#define NOTE_D6  1175
+#define NOTE_DS6 1245
+#define NOTE_E6  1319
+#define NOTE_F6  1397
+#define NOTE_FS6 1480
+#define NOTE_G6  1568
+#define NOTE_GS6 1661
+#define NOTE_A6  1760
+#define NOTE_AS6 1865
+#define NOTE_B6  1976
+#define NOTE_C7  2093
+#define NOTE_CS7 2217
+#define NOTE_D7  2349
+#define NOTE_DS7 2489
+#define NOTE_E7  2637
+#define NOTE_F7  2794
+#define NOTE_FS7 2960
+#define NOTE_G7  3136
+#define NOTE_GS7 3322
+#define NOTE_A7  3520
+#define NOTE_AS7 3729
+#define NOTE_B7  3951
+#define NOTE_C8  4186
+#define NOTE_CS8 4435
+#define NOTE_D8  4699
+#define NOTE_DS8 4978