////////////////////////////////////////////////////////////////////////////////
//                                                                            //
// Programname: Test_HSA_LCD_Shield_V6                                        //
// Date: 28.11.2018                                                           //
// Description: Program to test the LCD-Shield, which was build in Elektro-   //
//              nikdesign.                                                    //
//                                                                            //
// Author: Tobias Müller, M. Eng.                                             //
//                                                                            //
////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////
////////////////////          Include Header-File           ////////////////////
////////////////////////////////////////////////////////////////////////////////

#include <HSA_LCD_Shield.h>

////////////////////////////////////////////////////////////////////////////////
////////////////////             Define Symbols             ////////////////////
////////////////////////////////////////////////////////////////////////////////

#define BAUDRATE 9600

////////////////////////////////////////////////////////////////////////////////
////////////////////            Global Variable             ////////////////////
////////////////////////////////////////////////////////////////////////////////

HSA_LCD_Shield LCD(LCD_VERSION_6); // Create object of class HSA_LCD_Shield

////////////////////////////////////////////////////////////////////////////////
////////////////////            Setup Function              ////////////////////
////////////////////////////////////////////////////////////////////////////////

void setup(void) {

  //////////////////////////////////////////////////////////////////////
  ////////////////////        Local Variable        ////////////////////
  //////////////////////////////////////////////////////////////////////

  bool config;      // Store the answer from the "HSA_LCD_Shield.begin"

  //////////////////////////////////////////////////////////////////////
  ////////////////////           GPIO Setup         ////////////////////
  //////////////////////////////////////////////////////////////////////

  // Setup serial interface
  Serial.begin(BAUDRATE);

  // Wait until serial interface is not initialized
  while(!Serial);

  // Setup LCD-Shield
  config = LCD.begin();

  //////////////////////////////////////////////////////////////////////
  ////////////////////         One run tasks        ////////////////////
  //////////////////////////////////////////////////////////////////////

  // Print answer from LCD-Setup
  if(config) Serial.println("LCD-Shield setup was successful!");
  else Serial.println("LCD-Shield setup was not successful!");

  // Print I²C-address of the LC-Display
  Serial.print("The I2C-address of the LC-Display is: 0x");
  Serial.println(LCD.returnAddress(),HEX);

  // Print I²C-Config of buttons and LEDs
  Serial.print("The LCD-Shield configuration for buttons & LEDs is: ");
  Serial.println(LCD.returnConfig());

  // Show startup process on LC-Display, if setup was successful
  if(config) {

    // Print welcome message on LC-Display
    LCD.writeRow("Hochschule  Anhalt\n  FB EMW\nPress Key!");
  
    // Turn LCD-Backlight on
    LCD.lcdBacklight(true);

    // For four times turn LCD-Backlight on/off
    for(int i = 0; i<4; i++) {

      // Turn LCD-Backlight off
      LCD.lcdBacklight(false);

      // Wait 500 ms
      delay(500);

      // Turn LCD-Backlight on
      LCD.lcdBacklight(true);

      // Wait 500 ms
      delay(500);

    }
  }

  // Otherwise stop Program
  else while(true);

  // Exit Setup-Function
  return; 

}

////////////////////////////////////////////////////////////////////////////////
////////////////////             Loop Function              ////////////////////
////////////////////////////////////////////////////////////////////////////////

void loop(void) {

  //////////////////////////////////////////////////////////////////////
  ////////////////////          Main Program        ////////////////////
  //////////////////////////////////////////////////////////////////////

  // while no or more than one button is pressed
  while(LCD.getButton() == false) {

    // Turn off LEDs
    LCD.controlLED(LED_GREEN,false);
    LCD.controlLED(LED_RED,false);

    // Print welcome message on LC-Display
    LCD.writeRow("Hochschule  Anhalt\n  FB EMW\nPress Key!");

    // Animate the third and fourth row 
    LCD.writeRow(0x03, "");
    delay(200);
    LCD.writeRow(0x03, "> FB EMW <");
    delay(200);
    LCD.writeRow(0x03, ">>FB EMW<<");
    LCD.writeRow(0x04, "Press Key!");
    delay(200);
    LCD.writeRow(0x03, " >FB EMW<");
    delay(200);
    
  }

  // while button up is pressed
  while(LCD.getButton() == BUTTON_UP) {

    // Show which button is pressed
    LCD.writeRow(0x01, "button");
    LCD.writeRow(0x02, "up     *");
    LCD.writeRow(0x03, "      0 0");
    LCD.writeRow(0x04, "       0");

    // Let LED red and green blink
    LCD.controlLED(LED_GREEN,true);
    LCD.controlLED(LED_RED,true);
    delay(200);
    LCD.controlLED(LED_GREEN,false);
    LCD.controlLED(LED_RED,false);
    delay(200);

  }

  // while button righ is pressed
  while(LCD.getButton() == BUTTON_RIGHT) {

    // Show which button is pressed
    LCD.writeRow(0x01, "button");
    LCD.writeRow(0x02, "right  0");
    LCD.writeRow(0x03, "      0 *");
    LCD.writeRow(0x04, "       0");

    // Let LED red blink
    LCD.controlLED(LED_RED,true);
    delay(200);
    LCD.controlLED(LED_RED,false);
    delay(200);

  }

  // while button down is pressed
  while(LCD.getButton() == BUTTON_DOWN) {

    // Show which button is pressed
    LCD.writeRow(0x01, "button");
    LCD.writeRow(0x02, "down   0");
    LCD.writeRow(0x03, "      0 0");
    LCD.writeRow(0x04, "       *");

    // Let LED red and green blink differently
    LCD.controlLED(LED_GREEN,false);
    LCD.controlLED(LED_RED,true);
    delay(200);
    LCD.controlLED(LED_GREEN,true);
    LCD.controlLED(LED_RED,false);
    delay(200);

  }

  // while button left is pressed
  while(LCD.getButton() == BUTTON_LEFT) {

    // Show which left is pressed
    LCD.writeRow(0x01, "button");
    LCD.writeRow(0x02, "left   0");
    LCD.writeRow(0x03, "      * 0");
    LCD.writeRow(0x04, "       0");

    // Let LED green blink
    LCD.controlLED(LED_GREEN,true);
    delay(200);
    LCD.controlLED(LED_GREEN,false);
    delay(200);

  }
}