UNIHIKER K10 Blinky

#include <Arduino.h>
// ─────────────────────────────────────────────────────────────────
//  UNIHIKER K10 — DFRobot Sensor Dashboard
//  Onboard:  TFT display, 2MP camera, AHT20, LTR303ALS light,
//            SC7A20H accelerometer, 3× WS2812 RGB LEDs, MEMS mics,
//            speaker, A/B buttons, microSD slot
//  External: ENS160+BME280 (I2C), SEN0691 mmWave (UART),
//            Soil moisture (ADC), pH probe (ADC), DO probe (ADC),
//            HC-SR04P ultrasonic, 24-px WS2812 LED ring
// ─────────────────────────────────────────────────────────────────

#include "unihiker_k10.h"
#include <Wire.h>
#include <DFRobot_ENS160.h>
#include "DFRobot_BME280.h"
#include <DFRobot_C4002.h>
#include <Adafruit_NeoPixel.h>

// ── Pin constants ─────────────────────────────────────────────────
#define SOIL_PIN    3    // Gravity analog soil moisture
#define PH_PIN      11   // Gravity pH probe analog out
#define DO_PIN      5    // Gravity dissolved O2 analog out
#define TRIG_PIN    14   // HC-SR04P trigger
#define ECHO_PIN    13   // HC-SR04P echo
#define RING_PIN    4    // 24-pixel WS2812 ring DIN
#define MMWAVE_TX   1    // Board TX → sensor RX
#define MMWAVE_RX   2    // Board RX ← sensor TX

// mmWave baud rate
#define MMWAVE_BAUD 9600

// ── Colour constants for canvasText ──────────────────────────────
#define RED     0xFF0000
#define GREEN   0x00FF00
#define BLUE    0x0000FF
#define CYAN    0x00FFFF
#define MAGENTA 0xFF00FF
#define YELLOW  0xFFFF00
#define WHITE   0xFFFFFF

// ── Sensor objects ────────────────────────────────────────────────

typedef DFRobot_BME280_IIC BME;


// Forward declarations
float readSoilPct();
float readPhValue();
float readDOmgL();
float measureDistance_cm();
void spinRing(uint32_t colour);
void showPage(float bmeT, float bmeH, float bmeP, uint16_t tvoc, uint16_t eco2, uint8_t aqi, float ph, float soil, float doMg, float dist_cm, bool presence, float ax, float ay, float az, uint16_t als);

UNIHIKER_K10 k10;

// ENS160 + BME280 (DFRobot libs — no Adafruit Unified Sensor dependency)
DFRobot_ENS160_I2C ens160(&Wire, 0x53);

BME bme(&Wire, 0x76);

// mmWave UART — constructor requires HardwareSerial*, baud, rxpin, txpin
DFRobot_C4002 mmwave(&Serial1, MMWAVE_BAUD, MMWAVE_RX, MMWAVE_TX);

// 24-pixel external LED ring
Adafruit_NeoPixel ring(24, RING_PIN, NEO_GRB + NEO_KHZ800);

// ── Display page ──────────────────────────────────────────────────
static uint8_t displayPage = 0;

// ── Helpers ───────────────────────────────────────────────────────
float readSoilPct()  { return (float)map(analogRead(SOIL_PIN), 0, 4095, 0, 100); }
float readPhValue()  { return analogRead(PH_PIN)  * (3.3f / 4095.0f) * 3.5f; }
float readDOmgL()    { return analogRead(DO_PIN)  * (3.3f / 4095.0f) / 0.57f; }

float measureDistance_cm() {
  digitalWrite(TRIG_PIN, LOW);  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH); delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  long dur = pulseIn(ECHO_PIN, HIGH, 30000UL);
  return dur * 0.0343f / 2.0f;
}

// Animate 24-px ring with rolling colour
void spinRing(uint32_t colour) {
  uint8_t offset = (millis() / 50) % 24;
  for (int i = 0; i < 24; i++) {
    ring.setPixelColor((i + offset) % 24, (i == 0) ? colour : 0);
  }
  ring.show();
}

// TFT dashboard — two pages
void showPage(float bmeT, float bmeH, float bmeP,
              uint16_t tvoc, uint16_t eco2, uint8_t aqi,
              float ph, float soil, float doMg,
              float dist_cm, bool presence,
              float ax, float ay, float az,
              uint16_t als) {
  k10.canvas->canvasClear();
  if (displayPage == 0) {
    k10.canvas->canvasText("=== ENV  PAGE A ===", 1, RED);
    k10.canvas->canvasText(("BME T:" + String(bmeT,1) + "C H:" + String(bmeH,0) + "%").c_str(), 2, CYAN);
    k10.canvas->canvasText(("BME P:" + String(bmeP/100.0f,0) + "hPa").c_str(), 3, CYAN);
    k10.canvas->canvasText(("TVOC:" + String(tvoc) + "ppb").c_str(), 4, MAGENTA);
    k10.canvas->canvasText(("eCO2:" + String(eco2) + "ppm").c_str(), 5, MAGENTA);
    k10.canvas->canvasText(("AQI: " + String(aqi)).c_str(), 6, GREEN);
    k10.canvas->canvasText(("Light:" + String(als)).c_str(), 7, YELLOW);
    k10.canvas->canvasText(("Acc X:" + String(ax,1) + " Y:" + String(ay,1)).c_str(), 8, WHITE);
  } else {
    k10.canvas->canvasText("=== PHY  PAGE B ===", 1, RED);
    k10.canvas->canvasText(("pH:   " + String(ph,2)).c_str(), 2, GREEN);
    k10.canvas->canvasText(("Soil: " + String(soil,0) + "%").c_str(), 3, GREEN);
    k10.canvas->canvasText(("DO:   " + String(doMg,1) + "mg/L").c_str(), 4, CYAN);
    k10.canvas->canvasText(("Dist: " + String(dist_cm,1) + "cm").c_str(), 5, YELLOW);
    k10.canvas->canvasText(("mmWave:" + String(presence ? "PRESENT" : "NONE")).c_str(), 6, presence ? RED : WHITE);
    k10.canvas->canvasText(("Acc Z: " + String(az,1)).c_str(), 7, WHITE);
    k10.canvas->canvasText("(B=flip page)", 8, YELLOW);
  }
  k10.canvas->updateCanvas();
}

// ── Setup ─────────────────────────────────────────────────────────
void setup() {
  Serial.begin(115200);

  // K10 framework
  k10.begin();
  k10.initScreen(2);
  k10.creatCanvas();
  k10.rgb->brightness(60);

  // Button B → flip display page
  k10.buttonB->setPressedCallback([]() {
    displayPage = (displayPage + 1) % 2;
  });

  // Button A → save camera snapshot
  k10.buttonA->setPressedCallback([]() {
    k10.photoSaveToTFCard("/snapshot.jpg");
  });

  k10.initBgCamerImage();
  k10.setBgCamerImage(true);
  k10.initSDFile();

  // External I2C bus
  Wire.begin(47, 48);

  // ENS160
  if (ens160.begin() != NO_ERR) {
    Serial.println("[warn] ENS160 not found");
  } else {
    ens160.setPWRMode(ENS160_STANDARD_MODE);
  }

  // BME280
  bme.reset();
  if (bme.begin() != BME::eStatusOK) {
    Serial.println("[warn] BME280 not found");
  }

  // Ultrasonic
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);

  // External LED ring
  ring.begin();
  ring.setBrightness(80);
  ring.clear();
  ring.show();

  // mmWave — Serial1 already configured via constructor, just call begin()
  mmwave.begin();

  Serial.println("K10 DFRobot Sensor Dashboard ready.");
}

// ── Loop ──────────────────────────────────────────────────────────
void loop() {
  static uint32_t lastDisplay = 0;

  // ── Onboard sensors ──────────────────────────────────────────────
  uint16_t als = k10.readALS();
  float ax = k10.getAccelerometerX();
  float ay = k10.getAccelerometerY();
  float az = k10.getAccelerometerZ();

  // ── BME280 ───────────────────────────────────────────────────────
  float bmeT = bme.getTemperature();
  float bmeH = bme.getHumidity();
  float bmeP = bme.getPressure();   // Pa

  // ── ENS160 ───────────────────────────────────────────────────────
  // Compensate with temp/humidity for best accuracy
  ens160.setTempAndHum(bmeT, bmeH);
  uint8_t  aqi  = ens160.getAQI();
  uint16_t tvoc = ens160.getTVOC();
  uint16_t eco2 = ens160.getECO2();

  // ── Analog sensors ───────────────────────────────────────────────
  float ph   = readPhValue();
  float soil = readSoilPct();
  float doMg = readDOmgL();

  // ── Ultrasonic ───────────────────────────────────────────────────
  float dist = measureDistance_cm();

  // ── mmWave — use getPresenceGateIndex(); presence if index > 0 ───
  bool presence = (mmwave.getPresenceGateIndex() > 0);

  // ── Onboard RGB LEDs — presence indicator ────────────────────────
  if (presence) {
    k10.rgb->write(-1, 255, 0, 0);     // all red
  } else {
    int hue = (millis() / 20) % 256;
    k10.rgb->write(0,  hue,          0,   255 - hue);
    k10.rgb->write(1,  0,    255 - hue,   hue);
    k10.rgb->write(2,  255 - hue, hue,    0);
  }

  // ── External ring — colour by eCO2 level ─────────────────────────
  uint32_t ringCol = (eco2 > 1500) ? ring.Color(255, 0, 0)
                   : (eco2 > 800)  ? ring.Color(255, 120, 0)
                                   : ring.Color(0, 200, 80);
  spinRing(ringCol);

  // ── TFT update every 500 ms ──────────────────────────────────────
  if (millis() - lastDisplay > 500) {
    lastDisplay = millis();
    showPage(bmeT, bmeH, bmeP,
             tvoc, eco2, aqi,
             ph, soil, doMg,
             dist, presence,
             ax, ay, az, als);
  }

  // ── Serial log ───────────────────────────────────────────────────
  Serial.printf(
    "BME:T=%.1f H=%.0f%% P=%.0fhPa | ENS:AQI=%u TVOC=%u eCO2=%u | "
    "pH=%.2f Soil=%.0f%% DO=%.1fmg/L | Dist=%.1fcm | Pres=%s | "
    "Acc:%.1f,%.1f,%.1f ALS=%u\n",
    bmeT, bmeH, bmeP / 100.0f,
    aqi, tvoc, eco2,
    ph, soil, doMg,
    dist, presence ? "YES" : "NO",
    ax, ay, az, als
  );

  delay(100);
}