Tricorder Version 3

#include <Adafruit_Arcada.h>
#include <CircularBuffer.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_LSM6DS33.h>
#include <Adafruit_LIS3MDL.h>
#include <Adafruit_SHT31.h>
#include <Adafruit_APDS9960.h>
#include <Adafruit_BMP280.h>
#include <PDM.h>
#include <Arcada_GifDecoder.h>
#include <Adafruit_MLX90640.h>

// for Bluetooth communication with handheld sensor - added 4/22/22 by NotSpock
#include <bluefruit.h>
BLEClientBas  clientBas;  // battery client
BLEClientDis  clientDis;  // device information client
BLEClientUart clientUart; // bleuart client

int16_t voc_val = 1;
int16_t eco2_val = 2;

uint32_t timestamp = 0;

// MLX90640 settings ---------------------------------------
Adafruit_MLX90640 mlx;
float frame[32 * 24]; // Buffer for the MLX90640 data

Adafruit_Arcada arcada;
Adafruit_LSM6DS33 lsm6ds33;
Adafruit_LIS3MDL lis3mdl;
Adafruit_SHT31 sht30;
Adafruit_APDS9960 apds9960;
Adafruit_BMP280 bmp280;
extern PDMClass PDM;
GifDecoder<ARCADA_TFT_WIDTH, ARCADA_TFT_HEIGHT, 12> decoder;
File file;

#define WHITE_LED 43

// Color definitions
#define BACKGROUND_COLOR __builtin_bswap16(ARCADA_BLACK)
#define BORDER_COLOR __builtin_bswap16(ARCADA_BLUE)
#define PLOT_COLOR_1 __builtin_bswap16(ARCADA_PINK)
#define PLOT_COLOR_2 __builtin_bswap16(ARCADA_GREENYELLOW)
#define PLOT_COLOR_3 __builtin_bswap16(ARCADA_CYAN)
#define TITLE_COLOR __builtin_bswap16(ARCADA_WHITE)
#define TICKTEXT_COLOR __builtin_bswap16(ARCADA_WHITE)
#define TICKLINE_COLOR __builtin_bswap16(ARCADA_DARKGREY)

const uint16_t camColors[] = {
  0x0011, 0x0031, 0x00B2, 0x0112, 0x0192, 0x01F3, 0x0273, 0x02F3,
  0x03F4, 0x0514, 0x0572, 0x058F, 0x05AD, 0x05C9, 0x05E5, 0x0621,
  0x2E40, 0x4E80, 0x76A0, 0x9EC0, 0xCEE0, 0xE660, 0xE520, 0xEBE0,
  0xEB40, 0xEAA0, 0xF200, 0xF140, 0xF100, 0xF0C0, 0xF080, 0xF040, 0xF800
};

// Buffers surrounding the plot area
#define PLOT_TOPBUFFER 20
#define PLOT_LEFTBUFFER 40
#define PLOT_BOTTOMBUFFER 20
#define PLOT_W (ARCADA_TFT_WIDTH - PLOT_LEFTBUFFER)
#define PLOT_H (ARCADA_TFT_HEIGHT - PLOT_BOTTOMBUFFER - PLOT_TOPBUFFER)

// millisecond delay between samples
#define DELAY_PER_SAMPLE 50

void screenClearCallback(void);
void updateScreenCallback(void);
void drawPixelCallback(int16_t x, int16_t y, uint8_t red, uint8_t green, uint8_t blue);
void drawLineCallback(int16_t x, int16_t y, uint8_t *buf, int16_t w, uint16_t *palette, int16_t skip);
bool fileSeekCallback(unsigned long position);
unsigned long filePositionCallback(void);
int fileReadCallback(void);
int fileReadBlockCallback(void *buffer, int numberOfBytes);
void onPDMdata(void);
void bleuart_rx_callback(BLEClientUart& uart_svc);
void connect_callback(uint16_t conn_handle);
void disconnect_callback(uint16_t conn_handle, uint8_t reason);

void plotBuffer(GFXcanvas16 *_canvas, const char *title, 
                CircularBuffer<float, PLOT_W> &buffer1, 
                CircularBuffer<float, PLOT_W> &buffer2, 
                CircularBuffer<float, PLOT_W> &buffer3);

// Buffer for our plot data
CircularBuffer<float, PLOT_W> data_buffer;
CircularBuffer<float, PLOT_W> data_buffer2;
CircularBuffer<float, PLOT_W> data_buffer3;

int8_t sensornum = 0;

void setup(void) {
    Serial.begin(115200);
    Serial.print("Star Fleet Tricorder");

    if (!mlx.begin()) {
        Serial.println("Failed to find MLX90640 sensor!");
        while (1);
    }

    decoder.setScreenClearCallback(screenClearCallback);
    decoder.setUpdateScreenCallback(updateScreenCallback);
    decoder.setDrawPixelCallback(drawPixelCallback);
    decoder.setDrawLineCallback(drawLineCallback);
    decoder.setFileSeekCallback(fileSeekCallback);
    decoder.setFilePositionCallback(filePositionCallback);
    decoder.setFileReadCallback(fileReadCallback);
    decoder.setFileReadBlockCallback(fileReadBlockCallback);

    // Start TFT and fill black
    if (!arcada.arcadaBegin()) {
        Serial.print("Failed to begin");
        while (1) delay(10);
    }
    arcada.displayBegin();

    // Turn on backlight
    arcada.setBacklight(255);

    arcada.filesysBeginMSD();  
    arcada.filesysBegin();

    if (!arcada.createFrameBuffer(ARCADA_TFT_WIDTH, ARCADA_TFT_HEIGHT)) {
        Serial.print("Failed to allocate framebuffer");
        while (1);
    }
    if (!apds9960.begin() || !lsm6ds33.begin_I2C() || !lis3mdl.begin_I2C() || 
        !sht30.begin(0x44) || !bmp280.begin()) {
        Serial.println("Failed to find CLUE sensors!");
        arcada.haltBox("Failed to init CLUE sensors");
    }

    PDM.onReceive(onPDMdata);
    if (!PDM.begin(1, 16000)) {
        Serial.println("**Failed to start PDM!");
    }

    data_buffer.clear();
    data_buffer2.clear();
    data_buffer3.clear();
    pinMode(WHITE_LED, OUTPUT);
    digitalWrite(WHITE_LED, LOW);

    file = arcada.openFileByIndex("/gifs", 0, O_READ, "GIF");
    arcada.display->dmaWait();
    arcada.display->endWrite();   // End transaction from any prior callback
    decoder.startDecoding();

    Bluefruit.begin(0, 1);
    Bluefruit.setName("Bluefruit52 Central");

    clientBas.begin();
    clientDis.begin();
    clientUart.begin();
    clientUart.setRxCallback(bleuart_rx_callback);

    Bluefruit.setConnLedInterval(250);

    Bluefruit.Central.setConnectCallback(connect_callback);
    Bluefruit.Central.setDisconnectCallback(disconnect_callback);

    Bluefruit.Scanner.setRxCallback(scan_callback);
    Bluefruit.Scanner.restartOnDisconnect(true);
    Bluefruit.Scanner.setInterval(160, 80);
    Bluefruit.Scanner.useActiveScan(false);
    Bluefruit.Scanner.start(0);
}

void loop() {
    timestamp = millis();

    arcada.readButtons();
    uint8_t justPressed = arcada.justPressedButtons();
    uint8_t justReleased = arcada.justReleasedButtons();
    if (justReleased & ARCADA_BUTTONMASK_LEFT) {
        sensornum--;
        data_buffer.clear();
        data_buffer2.clear();
        data_buffer3.clear();
        digitalWrite(WHITE_LED, LOW);
        arcada.display->fillScreen(BACKGROUND_COLOR);
    }
    if (justReleased & ARCADA_BUTTONMASK_RIGHT) {
        sensornum++;
        data_buffer.clear();
        data_buffer2.clear();
        data_buffer3.clear();
        digitalWrite(WHITE_LED, LOW);
        arcada.display->fillScreen(BACKGROUND_COLOR);
    }

    if (sensornum == 0) {
        decoder.decodeFrame();
    } 
    else if (sensornum == 1) {
        float t = bmp280.readTemperature() + 273.15;
        data_buffer.push(t);
        Serial.printf("Temp: %f\n", t);
        plotBuffer(arcada.getCanvas(), "Tk",
                   data_buffer, data_buffer2, data_buffer3);
    } 
    else if (sensornum == 2) {
        float p = bmp280.readPressure();
        data_buffer.push(p);
        Serial.printf("Pressure: %f Pa\n", p);
        plotBuffer(arcada.getCanvas(), "P", 
                   data_buffer, data_buffer2, data_buffer3);
    } 
    else if (sensornum == 3) {
        float h = sht30.readHumidity();
        data_buffer.push(h);
        Serial.printf("Humid: %f %\n", h);
        plotBuffer(arcada.getCanvas(), "RH",
                   data_buffer, data_buffer2, data_buffer3);
    }
    else if (sensornum == 4) {
        uint16_t r, g, b, c;
        apds9960.enableColor(true);
        while(!apds9960.colorDataReady()) {
            delay(5);
        }
        apds9960.getColorData(&r, &g, &b, &c);
        data_buffer.push(c);
        Serial.printf("Light: %d\n", c);
        plotBuffer(arcada.getCanvas(), "I",
                   data_buffer, data_buffer2, data_buffer3);
    }
    else if (sensornum == 5) {
        uint16_t r, g, b, c;
        digitalWrite(WHITE_LED, HIGH);
        apds9960.enableColor(true);
        while(!apds9960.colorDataReady()) {
            delay(5);
        }
        apds9960.getColorData(&r, &g, &b, &c);
        data_buffer.push(r);
        data_buffer2.push(g);
        data_buffer3.push(b);
        Serial.printf("Color: %d %d %d\n", r, g, b);
        plotBuffer(arcada.getCanvas(), "Lamda",
                   data_buffer, data_buffer2, data_buffer3);
    }

    else if (sensornum == 6) {
        uint32_t pdm_vol = 25 * (log10(getPDMwave(4000)));
        data_buffer.push(pdm_vol);
        Serial.print("PDM volume: "); Serial.println(pdm_vol);
        plotBuffer(arcada.getCanvas(), "dB",
                   data_buffer, data_buffer2, data_buffer3);
    }  
    else if (sensornum == 7) {
        float x = (float)voc_val;
        float y = 0;
        float z = 0;
        data_buffer.push(x);
        data_buffer2.push(y);
        data_buffer3.push(z);
        Serial.printf("VOC: %f %f %f\n", x, y, z);
        plotBuffer(arcada.getCanvas(), "VOC",
                   data_buffer, data_buffer2, data_buffer3);
    }   
    else if (sensornum == 8) {
        float x = (float)eco2_val;
        float y = 0;
        float z = 0;
        data_buffer.push(x);
        data_buffer2.push(y);
        data_buffer3.push(z);
        Serial.printf("eCO2: %f %f %f\n", x, y, z);
        plotBuffer(arcada.getCanvas(), "eCO2",
                   data_buffer, data_buffer2, data_buffer3);
    } 
    else if (sensornum == 9) {
        sensors_event_t mag;
        lis3mdl.getEvent(&mag);
        float x = mag.magnetic.x;
        float y = mag.magnetic.y;
        float z = mag.magnetic.z;
        data_buffer.push(x);
        data_buffer2.push(y);
        data_buffer3.push(z);
        Serial.printf("Mag: %f %f %f\n", x, y, z);
        plotBuffer(arcada.getCanvas(), "Phi beta",
                   data_buffer, data_buffer2, data_buffer3);
    } 
else if (sensornum == 10) {
    mlx.getFrame(frame);

    float minTemp = frame[0], maxTemp = frame[0];
    for (int i = 1; i < 32 * 24; i++) {
        if (frame[i] < minTemp) minTemp = frame[i];
        if (frame[i] > maxTemp) maxTemp = frame[i];
    }

    // Calculate scaling factors
    float xScale = (float)ARCADA_TFT_WIDTH / 32.0;
    float yScale = (float)ARCADA_TFT_HEIGHT / 24.0;

    // Draw the thermal image
    for (int i = 0; i < 24; i++) {
        for (int j = 0; j < 32; j++) {
            int16_t color = mapf(frame[i * 32 + j], minTemp, maxTemp, 0, 255);
            arcada.display->fillRect(j * xScale, i * yScale, xScale, yScale, arcada.display->color565(color, 0, 255 - color));
        }
    }

    // Display the minimum and maximum temperatures
    arcada.display->setTextSize(2);
    arcada.display->setTextColor(ARCADA_WHITE);
    
    // Positioning text at the top or bottom of the screen
    arcada.display->setCursor(25, 30); // Top-left corner for minimum temperature
    arcada.display->print("Min: ");
    arcada.display->print(minTemp, 1); // Display minimum temperature with 1 decimal

    arcada.display->setCursor(ARCADA_TFT_WIDTH - 225, 180); // Top-right corner for maximum temperature
    arcada.display->print("Max: ");
    arcada.display->print(maxTemp, 1); // Display maximum temperature with 1 decimal
}


    else {
        data_buffer.clear();
        sensornum = 0;
        return;
    }
    if ((sensornum > 0) && (sensornum < 10)) {
        arcada.blitFrameBuffer(0, 0, false, true);
    }
}

void plotBuffer(GFXcanvas16 *_canvas, const char *title, 
                CircularBuffer<float, PLOT_W> &buffer1, 
                CircularBuffer<float, PLOT_W> &buffer2, 
                CircularBuffer<float, PLOT_W> &buffer3) {
    _canvas->fillScreen(BACKGROUND_COLOR);
    _canvas->drawLine(PLOT_LEFTBUFFER - 1, PLOT_TOPBUFFER, 
                      PLOT_LEFTBUFFER - 1, PLOT_H + PLOT_TOPBUFFER, BORDER_COLOR);
    _canvas->drawLine(PLOT_LEFTBUFFER - 1, PLOT_TOPBUFFER + PLOT_H + 1, 
                      ARCADA_TFT_WIDTH, PLOT_TOPBUFFER + PLOT_H + 1, BORDER_COLOR);
    _canvas->setTextSize(3);
    _canvas->setTextColor(TITLE_COLOR);
    uint16_t title_len = strlen(title) * 12;
    _canvas->setCursor((_canvas->width() - title_len) / 2, 0);
    _canvas->print(title);

    float minY = 0;
    float maxY = 0;

    if (buffer1.size() > 0) {
        maxY = minY = buffer1[0];
    }
    for (int i = 0; i < buffer1.size(); i++) {
        minY = min(minY, buffer1[i]);
        maxY = max(maxY, buffer1[i]);
    }
    for (int i = 0; i < buffer2.size(); i++) {
        minY = min(minY, buffer2[i]);
        maxY = max(maxY, buffer2[i]);
    }
    for (int i = 0; i < buffer3.size(); i++) {
        minY = min(minY, buffer3[i]);
        maxY = max(maxY, buffer3[i]);
    }

    float MIN_DELTA = 10.0;
    if (maxY - minY < MIN_DELTA) {
        float mid = (maxY + minY) / 2;
        maxY = mid + MIN_DELTA / 2;
        minY = mid - MIN_DELTA / 2;
    } else {
        float extra = (maxY - minY) / 10;
        maxY += extra;
        minY -= extra;
    }

    printTicks(_canvas, 5, minY, maxY);

    int16_t last_y = 0, last_x = 0;
    for (int i = 0; i < buffer1.size(); i++) {
        int16_t y = mapf(buffer1[i], minY, maxY, PLOT_TOPBUFFER + PLOT_H, PLOT_TOPBUFFER);
        int16_t x = PLOT_LEFTBUFFER + i;
        if (i == 0) {
            last_y = y;
            last_x = x;
        }
        _canvas->drawLine(last_x, last_y, x, y, PLOT_COLOR_1);
        last_x = x;
        last_y = y;
    }

    last_y = 0, last_x = 0;
    for (int i = 0; i < buffer2.size(); i++) {
        int16_t y = mapf(buffer2[i], minY, maxY, PLOT_TOPBUFFER + PLOT_H, PLOT_TOPBUFFER);
        int16_t x = PLOT_LEFTBUFFER + i;
        if (i == 0) {
            last_y = y;
            last_x = x;
        }
        _canvas->drawLine(last_x, last_y, x, y, PLOT_COLOR_2);
        last_x = x;
        last_y = y;
    }

    last_y = 0, last_x = 0;
    for (int i = 0; i < buffer3.size(); i++) {
        int16_t y = mapf(buffer3[i], minY, maxY, PLOT_TOPBUFFER + PLOT_H, PLOT_TOPBUFFER);
        int16_t x = PLOT_LEFTBUFFER + i;
        if (i == 0) {
            last_y = y;
            last_x = x;
        }
        _canvas->drawLine(last_x, last_y, x, y, PLOT_COLOR_3);
        last_x = x;
        last_y = y;
    }
}

void printTicks(GFXcanvas16 *_canvas, uint8_t ticks, float minY, float maxY) {
    _canvas->setTextSize(2);
    _canvas->setTextColor(TICKTEXT_COLOR);
    for (int t = 0; t < ticks; t++) {
        float v = mapf(t, 0, ticks - 1, minY, maxY);
        uint16_t y = mapf(t, 0, ticks - 1, ARCADA_TFT_HEIGHT - PLOT_BOTTOMBUFFER - 4, PLOT_TOPBUFFER);
        printLabel(_canvas, 0, y, v);
        uint16_t line_y = mapf(t, 0, ticks - 1, ARCADA_TFT_HEIGHT - PLOT_BOTTOMBUFFER, PLOT_TOPBUFFER);
        _canvas->drawLine(PLOT_LEFTBUFFER, line_y, ARCADA_TFT_WIDTH, line_y, TICKLINE_COLOR);
    }
}

void printLabel(GFXcanvas16 *_canvas, uint16_t x, uint16_t y, float val) {
    char label[20];
    if (abs(val) < 1) {
        snprintf(label, 19, "%0.2f", val);
    } else if (abs(val) < 10) {
        snprintf(label, 19, "%0.1f", val);
    } else {
        snprintf(label, 19, "%d", (int)val);
    }

    _canvas->setCursor(PLOT_LEFTBUFFER - strlen(label) * 6 - 5, y);
    _canvas->print(label);
}

int16_t minwave, maxwave;
short sampleBuffer[256];
volatile int samplesRead;

int32_t getPDMwave(int32_t samples) {
    minwave = 30000;
    maxwave = -30000;

    while (samples > 0) {
        if (!samplesRead) {
            yield();
            continue;
        }
        for (int i = 0; i < samplesRead; i++) {
            minwave = min(sampleBuffer[i], minwave);
            maxwave = max(sampleBuffer[i], maxwave);
            samples--;
        }
        samplesRead = 0;
    }
    return maxwave - minwave;
}

void onPDMdata() {
    int bytesAvailable = PDM.available();
    PDM.read(sampleBuffer, bytesAvailable);
    samplesRead = bytesAvailable / 2;
}

static float mapf(float x, float in_min, float in_max,
                  float out_min, float out_max) {
    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

void updateScreenCallback(void) {}

void screenClearCallback(void) {}

void drawPixelCallback(int16_t x, int16_t y, uint8_t red, uint8_t green, uint8_t blue) {
    arcada.display->drawPixel(x, y, arcada.display->color565(red, green, blue));
}

void drawLineCallback(int16_t x, int16_t y, uint8_t *buf, int16_t w, uint16_t *palette, int16_t skip) {
    uint16_t maxline = arcada.display->width();
    bool splitdisplay = false;

    uint8_t pixel;
    if (y >= arcada.display->height() || x >= maxline) {
        return;
    }

    if (x + w > maxline) {
        w = maxline - x;
    }
    if (w <= 0) return;

    uint16_t buf565[2][w];
    bool first = true;
    uint8_t bufidx = 0;
    uint16_t *ptr;

    for (int i = 0; i < w; ) {
        int n = 0, startColumn = i;
        ptr = &buf565[bufidx][0];
        if (skip == -1) {
            while(i < w) {
                ptr[n++] = palette[buf[i++]];
            }
        }
        else {
            while((i < w) && ((pixel = buf[i++]) != skip)) {
                ptr[n++] = palette[pixel];
            }
        }
        if (n) {
            arcada.display->dmaWait();
            if (first) {
                arcada.display->endWrite();
                arcada.display->startWrite();
                first = false;
            }
            arcada.display->setAddrWindow(x + startColumn, y, min(maxline, n), 1);
            arcada.display->writePixels(ptr, min(maxline, n), false, true);
            bufidx = 1 - bufidx;
        }
    }
}

bool fileSeekCallback(unsigned long position) {
    return file.seek(position);
}

unsigned long filePositionCallback(void) { 
    return file.position(); 
}

int fileReadCallback(void) {
    return file.read(); 
}

int fileReadBlockCallback(void * buffer, int numberOfBytes) {
    return file.read((uint8_t*)buffer, numberOfBytes);
}

void bleuart_rx_callback(BLEClientUart& uart_svc) {
    byte i = 0;
    char temp[10] = "    ";
    while (uart_svc.available()) {
        temp[i] = uart_svc.read();
        i++;
    }
    eco2_val = 10000 * (temp[0] - 48) + 1000 * (temp[1] - 48) + 100 * (temp[2] - 48) + 10 * (temp[3] - 48) + (temp[4] - 48);
    voc_val = 10000 * (temp[5] - 48) + 1000 * (temp[6] - 48) + 100 * (temp[7] - 48) + 10 * (temp[8] - 48) + (temp[9] - 48);
}

void connect_callback(uint16_t conn_handle) {
    if (clientDis.discover(conn_handle)) {
        char buffer[32 + 1];
        
        memset(buffer, 0, sizeof(buffer));
        if (clientDis.getManufacturer(buffer, sizeof(buffer))) {
            Serial.println(buffer);
        }

        memset(buffer, 0, sizeof(buffer));
        if (clientDis.getModel(buffer, sizeof(buffer))) {
            Serial.println(buffer);
        }

    } else {
        Serial.println("Device information discovery failed!");
    }

    if (clientBas.discover(conn_handle)) {
        Serial.println("Battery service discovered!");
    } else {
        Serial.println("Battery service discovery failed!");
    }

    if (clientUart.discover(conn_handle)) {
        clientUart.enableTXD();
        Serial.println("UART service discovered!");
    } else {
        Serial.println("UART service discovery failed!");
        Bluefruit.disconnect(conn_handle);
    }
}

void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
    Serial.print("Disconnected, reason = ");
    Serial.println(reason);
}

void scan_callback(ble_gap_evt_adv_report_t* report) {
    if (Bluefruit.Scanner.checkReportForService(report, clientUart)) {
        Bluefruit.Central.connect(report);
    } else {      
        Bluefruit.Scanner.resume();
    }
}