Init
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//
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// Cavaliere Heartbeat
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//
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#include <EEPROM.h>
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#include <Encoder.h> // Encoder by Paul Stoffregen
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#include <Adafruit_SSD1306.h>
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Adafruit_SSD1306 display(128, 64, &Wire, 4);
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#define audio 12 // Pin for 3,5 Jack
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#define led 13 // Pin for LED
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#define rot_clk 4 // Rotary encoder CLK pin
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#define rot_dt 3 // Rotary encoder DT pin
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#define rot_sw 2 // Rotary encoder SW pin, 1 = not pushed, 0 = pushed
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#define triggerLengthMS 50 // How long the trigger should stay on in milliseconds when triggerLength = 1
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#define bpm_value_min 80 // 20 bpm is minimum (80 / 4)
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#define bpm_value_max 1200 // 300 bpm is maximum (300 * 4)
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#define offset_x 5 // Display offset
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#define offset_y 5 // Display offset
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int bpm; // BPM, who'd have thought
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int bpms; // BPM to milliseconds
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int eeprom_bpm; // BPM stored in EEPROM
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int bpm_value; // Later bpm * 4 because of the 4 rotary encoder steps
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int triggerLength = 2; // 1 = triggerLengthMS, 2 = half of bpm
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int stayOnTime; // How long the trigger should stay on in milliseconds when triggerLength = 2
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unsigned long currentTime; // Timing stuff
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unsigned long previousTime = 0; // Timing stuff
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int state = 0; // Prevent trigger flood
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int rot_sw_state = 0; // Rotary encoder SW state
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int rot_sw_temp = 0; // Some dumb temp shit
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long rot_old_pos = 0; // Don't ask
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// Pins for the rotary encoder up and down
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Encoder rot_enc(rot_dt, rot_clk);
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void setup() {
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Serial.begin(9600);
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// Read stored BPM data
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if (EEPROM.read(0) != 1) {
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// No BPM data stored, let's initialize it with 120 BPM
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EEPROM.write(0, 1); // Set byte 0 to 1
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EEPROM.write(1, 1); // 1 x 100
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EEPROM.write(2, 2); // 2 x 10
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EEPROM.write(3, 0); // 0 x 1
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bpm = 120;
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bpm_value = bpm * 4;
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bpms = 60000 / bpm;
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Serial.println("No stored BPM found. Initialized with 120 BPM.");
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} else {
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// BPM data stored
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int a = EEPROM.read(1);
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int b = EEPROM.read(2);
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int c = EEPROM.read(3);
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eeprom_bpm = (a * 100) + (b * 10) + (c * 1);
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bpm = eeprom_bpm;
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bpm_value = bpm * 4;
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bpms = 60000 / bpm;
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Serial.print("Stored BPM data found: ");
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Serial.println(eeprom_bpm);
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}
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// Display
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display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
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display.setTextColor(SSD1306_WHITE);
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displayUpdate(bpm, bpm);
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// Calculate how long the LED should stay on
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if (triggerLength == 1) {
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stayOnTime = triggerLengthMS;
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} else if (triggerLength == 2) {
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stayOnTime = bpms / 2;
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}
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// Enable inputs and outputs
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pinMode(audio, OUTPUT);
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pinMode(led, OUTPUT);
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pinMode(rot_clk, INPUT);
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pinMode(rot_dt, INPUT);
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pinMode(rot_sw, INPUT);
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}
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void loop() {
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// Beat stuff
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currentTime = millis();
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if (currentTime - previousTime >= bpms) {
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triggerOn();
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previousTime = currentTime;
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state = 1;
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}
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if (currentTime - previousTime >= stayOnTime && state == 1) {
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triggerOff();
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state = 0;
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}
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// Rotary encoder stuff
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long rot_new_pos = rot_enc.read();
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if (rot_new_pos != rot_old_pos) {
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if (rot_new_pos > rot_old_pos) {
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bpm_value++;
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if (bpm_value > bpm_value_max) {
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bpm_value = bpm_value_max;
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}
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}
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if (rot_new_pos < rot_old_pos) {
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bpm_value--;
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if (bpm_value < bpm_value_min) {
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bpm_value = bpm_value_min;
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}
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}
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displayUpdate(bpm, bpm_value / 4);
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rot_old_pos = rot_new_pos;
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}
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// Rotary encoder button
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rot_sw_state = digitalRead(rot_sw);
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if (rot_sw_state == 1) {
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rot_sw_temp = 0;
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}
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if (rot_sw_state == 0 && rot_sw_temp == 0) {
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rot_sw_push();
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rot_sw_temp = 1;
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}
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}
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void triggerOn() {
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Serial.print("Trigger ON at ");
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Serial.print(currentTime);
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Serial.println(" milliseconds");
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digitalWrite(audio, HIGH);
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digitalWrite(led, HIGH);
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}
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void triggerOff() {
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Serial.print("Trigger OFF at ");
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Serial.print(currentTime);
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Serial.println(" milliseconds");
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digitalWrite(audio, LOW);
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digitalWrite(led, LOW);
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}
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void rot_sw_push() {
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// Recalculate BPM stuff
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bpm = bpm_value / 4;
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bpms = 60000 / bpm;
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if (triggerLength == 2) {
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stayOnTime = bpms / 2;
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}
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Serial.print("BPM set to ");
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Serial.println(bpm);
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displayUpdate(bpm, bpm);
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// Save new BPM to EEPROM
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int a = bpm / 100;
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int b = (bpm - (a * 100)) / 10;
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int c = (bpm - (a * 100) - (b * 10));
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EEPROM.write(1, a);
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EEPROM.write(2, b);
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EEPROM.write(3, c);
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}
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int displayUpdate(int bpm, int bpm2) {
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display.clearDisplay();
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display.setTextSize(1);
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display.setCursor(0 + offset_x, 0 + offset_y);
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display.println("cavaliere HEARTBEAT");
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display.setTextSize(2);
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display.setCursor(0 + offset_x, 18 + offset_y);
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display.println("BPM");
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display.setCursor(0 + offset_x, 40 + offset_y);
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display.println("NEW");
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String bpmToStr;
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String bpm2ToStr;
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// Leading whitespace when bpm < 100
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display.setCursor(68 + offset_x, 18 + offset_y);
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if (bpm < 100) {
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bpmToStr = " " + String(bpm);
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} else {
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bpmToStr = String(bpm);
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}
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display.println(bpmToStr);
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// Leading whitespace when bpm2 < 100
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display.setCursor(68 + offset_x, 40 + offset_y);
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if (bpm2 < 100) {
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bpm2ToStr = " " + String(bpm2);
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} else {
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bpm2ToStr = String(bpm2);
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}
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display.println(bpm2ToStr);
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display.display();
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return 0;
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}
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@ -0,0 +1,39 @@
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//------------------------------------------------------------------------------
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// File generated by LCD Assistant
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// http://en.radzio.dxp.pl/bitmap_converter/
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//------------------------------------------------------------------------------
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const unsigned char logo [] PROGMEM = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xEF, 0xEF, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x00, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x11, 0xFF, 0xFF, 0xEF, 0x00, 0x1F, 0xDF, 0xC0, 0x80, 0x80,
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0xDE, 0x5F, 0x1F, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x11, 0xFF, 0xFF, 0xEF, 0x00, 0xEF, 0xEF, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xEF, 0xEF, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x00, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x71, 0xFF, 0xDF, 0x0F, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x81, 0x61, 0x10, 0x60, 0x80, 0x00, 0x01, 0x01, 0x00, 0x00,
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0x00, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0xE0, 0xF1, 0xF1,
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0xE0, 0xC1, 0xE1, 0xF1, 0xF1, 0xE1, 0x01, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x81, 0x61, 0x10, 0x60, 0x81, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x01,
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0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xC0,
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0x00, 0x01, 0x01, 0x81, 0xC1, 0xC1, 0x01, 0xC1, 0xC1, 0x41, 0x40, 0x40, 0x40, 0x40, 0x01, 0x06,
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0xC8, 0xC6, 0x41, 0x41, 0x41, 0xC1, 0xC1, 0xC1, 0x01, 0xC1, 0xC1, 0x41, 0x41, 0x41, 0xC0, 0xC0,
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0xC0, 0x00, 0x41, 0x43, 0x47, 0x4F, 0x47, 0x43, 0x41, 0x00, 0x00, 0xC0, 0xC0, 0x41, 0x41, 0x41,
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0xC1, 0xC1, 0xC1, 0x01, 0xC1, 0xC1, 0x40, 0x40, 0x40, 0x40, 0x41, 0x06, 0x08, 0xC6, 0xC1, 0x41,
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0x41, 0x41, 0xC1, 0xC1, 0xC1, 0x01, 0x41, 0x41, 0x41, 0x41, 0x40, 0x40, 0x40, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x7B, 0x7F, 0x04, 0x04, 0x04, 0x3F, 0x7F, 0x7B, 0x00, 0x7B, 0x7F, 0x44, 0x44, 0x44,
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0x44, 0x44, 0x00, 0x00, 0x7B, 0x7F, 0x04, 0x04, 0x04, 0x3F, 0x7F, 0x7B, 0x00, 0x7B, 0x7F, 0x04,
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0x04, 0x1C, 0x7F, 0x77, 0x43, 0x00, 0x00, 0x00, 0x00, 0x77, 0x77, 0x00, 0x00, 0x00, 0x00, 0x7B,
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0x7F, 0x44, 0x44, 0x44, 0x7F, 0x7F, 0x7B, 0x00, 0x7B, 0x7F, 0x44, 0x44, 0x44, 0x44, 0x44, 0x00,
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0x00, 0x7B, 0x7F, 0x04, 0x04, 0x04, 0x3F, 0x7F, 0x7B, 0x00, 0x00, 0x00, 0x00, 0x77, 0x77, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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