Visualisation of Antisemetism

#include <Adafruit_PCA9685.h>
#include <ArduinoJson.h>
#include <neopixel.h>
#include "Particle.h"

SYSTEM_MODE(AUTOMATIC);

#if (PLATFORM_ID == 32)
#define PIXEL_PIN SPI
#else
#define PIXEL_PIN D15
#endif
#define PIXEL_COUNT 56
#define PIXEL_TYPE WS2812B

unsigned long lastCall = 0;
JsonDocument doc;
String d = "";
Adafruit_PCA9685 pwm = Adafruit_PCA9685();

#define SERVO_MIN 150   // Corresponds to 0 degrees
#define SERVO_MAX 500   // Corresponds to 170 degrees
#define MOTOR_COUNT 2

Adafruit_NeoPixel strip(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);

int lights = 0 ;
int dataMode = 3 ;
int button = 5;


void setup() {
    Serial.begin(9600);
    waitFor(Particle.connected, 30000);
    
    Particle.subscribe("hook-response/adlData/0", firstCall);
    Particle.subscribe("hook-response/adlData/1", adlDataHandler);
    Particle.subscribe("hook-response/adlData/2", adlDataHandler);
    Particle.subscribe("hook-response/adlData/3", adlDataHandler);

    Serial.println("Subscription Set!");
    
    strip.begin();
    strip.show();
    
    Serial.println("Initializing PCA9685...");
    Wire.begin();
    pwm.begin();
    pwm.setPWMFreq(50);
    Serial.println("PCA9685 Initialized.");
    
    pinMode(button, INPUT_PULLUP);
}

void loop() {
    if (dataMode == 3){
        lastCall = millis();
        Particle.publish("adlData");
        dataMode = 1 ;
    }
    else if (dataMode == 1){
        if (millis() > lastCall + 300000) {
            lastCall = millis();
            Particle.publish("adlData");
        }
        if (digitalRead(button) == LOW ){
            dataMode = 0 ;
        }
    }
    else if (dataMode == 0){
        rainbow(0) ;
        setMotorAngle(0, 0) ;
        setMotorAngle(1, 180) ;
        Serial.println(0);
        if (digitalRead(button) == LOW ){
            dataMode = 3 ;
        }
    }
    delay(200) ;
}

void firstCall(const char *event, const char *data) {
    d = "";
    adlDataHandler(event, data);
}

void adlDataHandler(const char *event, const char *data) {
    d += String(data);
    
    if (countData() >= 0){
        int dataNum = countData();
                Serial.println(dataNum);

        if (dataNum > 15){
            dataNum = 15 ;
        }
        rainbow(dataNum) ;
        setMotorAngle(0, map(dataNum, 0, 15, 0, 180)) ;
        setMotorAngle(1, map(dataNum, 0, 15, 180, 0)) ;
        Serial.println(dataNum);
    }
}

int countData()
{
    // The deserializeJSON method turns the JSON text object into a JsonDocument object
    // Note: You must retrieve the internal CONSTANT C representation of the string, c_str()
    DeserializationError error = deserializeJson(doc, d.c_str());
    
    // ---- Error handling code from ArduinoJSON
    if (error)
    {
        Serial.print("deserializeJson() failed: ");
        Serial.println(error.c_str());
        return -1;
    }
    // ---- end error handling
    
    // **** Retrieving array of JSON objects
    JsonArray data = doc["time_stamps"];
    int c = 0;
    for (int i = 0; i < data.size(); i++){
        JsonObject iData = data[i];
        int iStamp = iData["time_stamp"];
        if (iStamp >= ((int)Time.now() - 604800)){
            c++ ;
        }
        
    }
    return c ;
}

void rainbow(int mData) {
    uint16_t i, j;
    for(i=0; i<56; i++) {
      strip.setColor(i, map(mData, 0, 15, 0, 255), map(mData, 0, 15, 27, 0), map(mData, 0, 15, 230, 0));
    }
    strip.show();
}

void setMotorAngle(int motorIndex, int angle) {
    int pulseLength = map(angle, 0, 180, SERVO_MIN, SERVO_MAX);
    pwm.setPWM(motorIndex, 0, pulseLength);
}