/*
 * webSerial for testing javascript connection with an arduino
 * 
 * Latest work at   https://github.com/hpssjellis/webMLserial
 * 
 * Note: On the Arduino Serial monitor make sure no line-ending or if statements will not work
 * 
 * Android https://hpssjellis.github.io/web-serial-polyfill/index.html
 * Laptops Desktops  https://hpssjellis.github.io/my-examples-of-arduino-webUSB-webSerial/public/index.html
 * IOS     not really sure
 * 
 */



#include <Arduino.h> // Only needed for https://platformio.org/

String readString;

int myDelay = 600;   // non-block delay in milliseconds
unsigned long myStart; 

void setup() {
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, HIGH);   // onboard LED, HIGH = off
  while (!Serial) {}                // do nothing and wait
  
  myStart = millis();   // set delay
  randomSeed(analogRead(A0));  // AO pin on XIAO does not have to be connected to anything
  Serial.println("timestamp,A0,A1,A2");  // CSV file heading titles
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH); 
  //delay(50);
  if(Serial.available() > 0)  {  
      char myIn = Serial.read();  
      Serial.print(myIn);  
      delay(1);
  }  
  if ( (millis() - myStart ) >= myDelay) {       
     myStart = millis();      //  reset the delay time
     digitalWrite(LED_BUILTIN, LOW); 
     Serial.println( String(myStart)+ "," + String(analogRead(A0)) + "," + String(analogRead(A1)) + "," +  String(analogRead(A2))  );
     delay(1); // make this smaller as needed
  } 
  
}