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Make firmware.cpp from firmware.ino
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// Btns 0.6
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// by Leo Kuroshita for Hügelton instruments.
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// Modified to include MPU-6050 tilt support
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#include "MonomeSerialDevice.h"
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#include <Arduino.h>
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#include <Adafruit_TinyUSB.h>
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#include <Adafruit_MPU6050.h>
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#include <Adafruit_Sensor.h>
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#include <Adafruit_NeoPixel.h>
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#include <Wire.h>
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#define NUM_ROWS 8
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#define NUM_COLS 8
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#define BRIGHTNESS 127
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#define DEFAULT_ROTATION 0
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#define DEFAULT_FLIP_HORIZONTAL false
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#define DEFAULT_FLIP_VERTICAL false
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const uint8_t ROW_PINS[NUM_ROWS] = {0, 1, 2, 3, 4, 5, 6, 7}; // GPIO00-GPIO07
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const uint8_t COL_PINS[NUM_COLS] = {8, 9, 10, 11, 12, 13, 14, 15}; // GPIO8-GPIO15
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const uint8_t gammaTable[16] = { 0, 2, 3, 6, 11, 18, 25, 32, 41, 59, 70, 80, 92, 103, 115, 127};
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const uint8_t gammaAdj = 2;
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bool isInited = false;
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String deviceID = "btns";
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String serialNum = "m4216124";
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char mfgstr[32] = "monome";
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char prodstr[32] = "monome";
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char serialstr[32] = "m4216124";
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Adafruit_NeoPixel pixels(NUM_ROWS * 8, 28, NEO_GRB + NEO_KHZ800);
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MonomeSerialDevice mdp;
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Adafruit_MPU6050 mpu;
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bool buttonStates[NUM_ROWS][NUM_COLS] = {0};
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int gridRotation = DEFAULT_ROTATION;
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bool flipHorizontal = DEFAULT_FLIP_HORIZONTAL;
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bool flipVertical = DEFAULT_FLIP_VERTICAL;
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void mapButtonToLED(int buttonRow, int buttonCol, int &ledRow, int &ledCol) {
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// Handle button to LED mapping based on rotation and flipping
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ledRow = buttonRow;
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ledCol = buttonCol;
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// Apply rotation
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switch (gridRotation) {
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case 0: // No rotation
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break;
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case 1: // 90 degree rotation
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{
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int temp = ledRow;
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ledRow = ledCol;
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ledCol = NUM_COLS - 1 - temp;
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}
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break;
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case 2: // 180 degree rotation
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ledRow = NUM_ROWS - 1 - ledRow;
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ledCol = NUM_COLS - 1 - ledCol;
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break;
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case 3: // 270 degree rotation
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{
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int temp = ledRow;
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ledRow = NUM_ROWS - 1 - ledCol;
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ledCol = temp;
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}
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break;
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}
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// Apply flipping
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if (flipHorizontal) ledCol = NUM_COLS - 1 - ledCol;
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if (flipVertical) ledRow = NUM_ROWS - 1 - ledRow;
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}
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bool detectGridOrientation() {
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bool buttonPressed = false;
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// Scan to check which button is pressed
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for (int col = 0; col < NUM_COLS; col++) {
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digitalWrite(COL_PINS[col], LOW);
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for (int row = 0; row < NUM_ROWS; row++) {
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if (!digitalRead(ROW_PINS[row])) {
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buttonPressed = true;
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// Set grid rotation based on pressed button
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if (row == 0 && col == 0) {
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gridRotation = 0;
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} else if (row == 0 && col == NUM_COLS - 1) {
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gridRotation = 1;
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} else if (row == NUM_ROWS - 1 && col == NUM_COLS - 1) {
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gridRotation = 2;
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} else if (row == NUM_ROWS - 1 && col == 0) {
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gridRotation = 3;
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}
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digitalWrite(COL_PINS[col], HIGH);
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return buttonPressed;
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}
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}
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digitalWrite(COL_PINS[col], HIGH);
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}
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// If no button is pressed, set default orientation
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gridRotation = DEFAULT_ROTATION;
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return buttonPressed;
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}
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void setup() {
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USBDevice.setManufacturerDescriptor(mfgstr);
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USBDevice.setProductDescriptor(prodstr);
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USBDevice.setSerialDescriptor(serialstr);
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pinMode(LED_BUILTIN, OUTPUT);
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for (int i = 0; i < NUM_ROWS; i++) {
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pinMode(ROW_PINS[i], INPUT_PULLUP);
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}
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for (int i = 0; i < NUM_COLS; i++) {
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pinMode(COL_PINS[i], OUTPUT);
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digitalWrite(COL_PINS[i], HIGH);
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}
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detectGridOrientation();
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mdp.isMonome = true;
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mdp.deviceID = deviceID;
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mdp.setupAsGrid(NUM_ROWS, NUM_COLS);
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isInited = true;
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mdp.poll();
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// Send grid size and rotation information
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mdp.sendSysSize();
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mdp.sendSysRotation();
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pixels.begin();
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// Initialize MPU-6050
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/*Wire.setSCL(21);
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Wire.setSDA(20);
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Wire.begin();*/
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/*if (!mpu.begin()) {
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Serial.println("Failed to find MPU6050 chip");
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while (1) {
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delay(10);
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}
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}
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Serial.println("MPU6050 Found!");
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mpu.setGyroRange(MPU6050_RANGE_500_DEG);
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mpu.setFilterBandwidth(MPU6050_BAND_21_HZ);
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// Set tilt sensor 0 as active
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mdp.setTiltActive(0, true);*/
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}
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void loop() {
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static unsigned long lastCheck = 0;
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static unsigned long lastTiltCheck = 0;
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unsigned long currentMillis = millis();
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mdp.poll();
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if (currentMillis - lastCheck >= 15) {
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lastCheck = currentMillis;
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scanButtonMatrix();
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updateLEDMatrix();
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}
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// Send tilt data every 100ms
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if (currentMillis - lastTiltCheck >= 100) {
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lastTiltCheck = currentMillis;
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//sendTiltData();
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}
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}
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void scanButtonMatrix() {
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for (int row = 0; row < NUM_ROWS; row++) {
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for (int col = 0; col < NUM_COLS; col++) {
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digitalWrite(COL_PINS[col], LOW);
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bool currentState = !digitalRead(ROW_PINS[row]);
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digitalWrite(COL_PINS[col], HIGH);
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int ledRow, ledCol;
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mapButtonToLED(row, col, ledRow, ledCol);
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if (currentState != buttonStates[row][col]) {
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mdp.sendGridKey(ledCol, ledRow, currentState);
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buttonStates[row][col] = currentState;
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}
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}
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}
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}
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void updateLEDMatrix() {
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for (int row = 0; row < NUM_ROWS; row++) {
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for (int col = 0; col < NUM_COLS; col++) {
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int ledRow, ledCol;
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mapButtonToLED(row, col, ledRow, ledCol);
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uint8_t intensity = gammaTable[mdp.leds[row * NUM_ROWS + col]] * gammaAdj;
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pixels.setPixelColor(ledRow * NUM_ROWS + ledCol, pixels.Color(intensity / 2, intensity, intensity / 2));
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}
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}
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pixels.show();
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}
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void sendTiltData() {
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sensors_event_t a, g, temp;
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mpu.getEvent(&a, &g, &temp);
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// Scale gyro data to 16-bit integer range
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int16_t x = (int16_t)(g.gyro.x * 1000);
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int16_t y = (int16_t)(g.gyro.y * 1000);
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int16_t z = (int16_t)(g.gyro.z * 1000);
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mdp.sendTiltEvent(0, x, y, z);
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}
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