/*
  Copyright (C) AC SOFTWARE SP. Z O.O.

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

/**
 * @supla-example
 * @file HX711_Weight_sensor.ino
 * @brief Example of connecting an HX711 weight sensor to SUPLA with an Arduino Mega.
 * This example demonstrates how to integrate an HX711 load cell amplifier with a weight sensor
 * to an Arduino Mega, providing weight measurements to the SUPLA cloud via an Ethernet shield (W5100 or ENC28J60).
 * It includes functionality for taring the scales using an external button.
 * Users need to adjust network settings, SUPLA GUID, AUTHKEY, and GPIO pins for the HX711 module and the button in the code.
 *
 * @dependency https://github.com/olkal/HX711_ADC
 * @tags HX711, weight, load_cell, sensor, scales, tare, button, arduino_mega, ethernet, w5100, enc28j60
 */

#include <SuplaDevice.h>
#include <supla/sensor/HX711.h>
#include <supla/control/button.h>

#define SDA_GPIO 21
#define SCL_GPIO 22
#define BUTTON_GPIO 4

// Choose proper network interface for your card:
// Arduino Mega with EthernetShield W5100:
#include <supla/network/ethernet_shield.h>
// Ethernet MAC address
uint8_t mac[6] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05};
Supla::EthernetShield ethernet(mac);

// Arduino Mega with ENC28J60:
// #include <supla/network/ENC28J60.h>
// Supla::ENC28J60 ethernet(mac);

// Choose where Supla should store HX711 configuration data in persistent memory
// We recommend to use external FRAM memory
#include <supla/storage/eeprom.h>
Supla::Eeprom eeprom;
// #include <supla/storage/fram_spi.h>
// Supla::FramSpi fram(STORAGE_OFFSET);

void setup() {
  Serial.begin(115200);

  // Replace the falowing GUID with value that you can retrieve from
  // https://www.supla.org/arduino/get-guid
  char GUID[SUPLA_GUID_SIZE] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

  // Replace the following AUTHKEY with value that you can retrieve from:
  // https://www.supla.org/arduino/get-authkey
  char AUTHKEY[SUPLA_AUTHKEY_SIZE] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                                      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                                      0x00, 0x00};

  /*
   * Having your device already registered at cloud.supla.org,
   * you want to change CHANNEL sequence or remove any of them,
   * then you must also remove the device itself from cloud.supla.org.
   * Otherwise you will get "Channel conflict!" error.
   */

  auto scales = new Supla::Sensor::HX711(SDA_GPIO, SCL_GPIO);
  // Optionally, enter the calibration value as the third parameter (SDA_GPIO,
  // SCL_GPIO, 696.0)
  auto button = new Supla::Control::Button(BUTTON_GPIO);
  button->setSwNoiseFilterDelay(50);
  button->addAction(Supla::TARE_SCALES, scales, Supla::ON_PRESS);

  /*
   * SuplaDevice Initialization.
   * Server address is available at https://cloud.supla.org
   * If you do not have an account, you can create it at
   * https://cloud.supla.org/account/create SUPLA and SUPLA CLOUD are free of
   * charge
   *
   */

  SuplaDevice.begin(
      GUID,              // Global Unique Identifier
      "svr1.supla.org",  // SUPLA server address
      "email@address",   // Email address used to login to Supla Cloud
      AUTHKEY);          // Authorization key
}

void loop() {
  SuplaDevice.iterate();
}

