ping-pong.ino

// This #include statement was automatically added by the Particle IDE.
#include "HttpClient/HttpClient.h"

int button_blue  = D0;
int button_red   = D1;
int button_reset = D2;

int led = D7;

bool latch_blue  = false;
bool latch_red   = false;
bool latch_reset = false;

unsigned long button_time_blue,  pressed_time_blue;
unsigned long button_time_red,   pressed_time_red;
unsigned long button_time_reset, pressed_time_reset;

HttpClient http;

// Headers currently need to be set at init, useful for API keys etc.
http_header_t headers[] = {
  //  { "Content-Type", "application/json" },
  //  { "Accept" , "application/json" },
  { "Accept" , "*/*"},
  { NULL, NULL } // NOTE: Always terminate headers will NULL
};

http_request_t request;
http_response_t response;

void setup() {
  pinMode(button_red,   INPUT_PULLDOWN);
  pinMode(button_blue,  INPUT_PULLDOWN);
  pinMode(button_reset, INPUT_PULLDOWN);

  pinMode(led, OUTPUT);
}

void loop() {
  int val_red   = digitalRead(button_red);
  int val_blue  = digitalRead(button_blue);
  int val_reset = digitalRead(button_reset);
  
  request.hostname = "appname.herokuapp.com";
  request.port = 80;
  
  if (val_blue == HIGH && !latch_blue) {
    digitalWrite(led, HIGH);
    latch_blue = true;
    button_time_blue = millis();
  }
  else if (val_blue == LOW && latch_blue) {
    digitalWrite(led, LOW);
    latch_blue = false;
    pressed_time_blue = millis() - button_time_blue;
    if (pressed_time_blue > 1000) {
      // button was pressed for more than a second so we undo
      Serial.println("Blue undo");
      request.path = "/blue_undo";
      http.put(request, response, headers);
    }
    else {
      Serial.println("Blue scores!");
      request.path = "/blue_scores";
      http.put(request, response, headers);
    }
  }

  if (val_red == HIGH && !latch_red) {
    digitalWrite(led, HIGH);
    latch_red = true;
    button_time_red = millis();
  }
  else if (val_red == LOW && latch_red) {
    digitalWrite(led, LOW);
    latch_red = false;
    pressed_time_red = millis() - button_time_red;
    if (pressed_time_red > 1000) {
      // button was pressed for more than a second so we undo
      Serial.println("Red undo");
      request.path = "/red_undo";
      http.put(request, response, headers);
    }
    else {
      Serial.println("Red scores!");
      request.path = "/red_scores";
      http.put(request, response, headers);
    }
  }

  if (val_reset == HIGH && !latch_reset) {
    digitalWrite(led, HIGH);
    latch_reset = true;
    button_time_reset = millis();
  }
  else if (val_reset == LOW && latch_reset) {
    digitalWrite(led, LOW);
    latch_reset = false;
    pressed_time_reset = millis() - button_time_reset;
    if (pressed_time_reset > 1000) {
      // button was pressed for more than a second so we reset
      Serial.println("Reset scores");
      request.path = "/reset_scores";
      http.put(request, response, headers);
    }
  }

}