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/*
 * Klooi Pelorus File voor testen enzo PA3BNX met Nokia LCD5110 en Arduino Nano
 * 06-07-2018
 */
/*********************************************************************
This is an example sketch for our Monochrome Nokia 5110 LCD Displays

  Pick one up today in the adafruit shop!
  ------> http://www.adafruit.com/products/338

These displays use SPI to communicate, 4 or 5 pins are required to
interface

Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!

Written by Limor Fried/Ladyada  for Adafruit Industries.
BSD license, check license.txt for more information
All text above, and the splash screen must be included in any redistribution
*********************************************************************/

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_PCD8544.h>

// Software SPI (slower updates, more flexible pin options):
// pin 7 - Serial clock out (SCLK)
// pin 6 - Serial data out (DIN)
// pin 5 - Data/Command select (D/C)
// pin 4 - LCD chip select (CS)
// pin 3 - LCD reset (RST)
Adafruit_PCD8544 display = Adafruit_PCD8544(7, 6, 5, 4, 3);

// Hardware SPI (faster, but must use certain hardware pins):
// SCK is LCD serial clock (SCLK) - this is pin 13 on Arduino Uno
// MOSI is LCD DIN - this is pin 11 on an Arduino Uno
// pin 5 - Data/Command select (D/C)
// pin 4 - LCD chip select (CS)
// pin 3 - LCD reset (RST)
// Adafruit_PCD8544 display = Adafruit_PCD8544(5, 4, 3);
// Note with hardware SPI MISO and SS pins aren't used but will still be read
// and written to during SPI transfer.  Be careful sharing these pins!


int t = 200;


void Pelorus(int d){

//Float
const float rad =PI/180 ; //0.017453292
float q;

//Int
static int OldDegrees = 999;

//Integer
int xc = display.width()/2 -1;
int yc = display.height()/2-1;
int r = yc-2;
byte y;
int s,ss;

//Nothing ToDo
if (OldDegrees==d)
{
  return;
}


display.clearDisplay();
display.drawCircle(xc,yc,yc,BLACK);

if (d==999)
{
 display.fillCircle(xc,yc,2,BLACK); //Just a Center dot now
}
else
{
 q  = (d-90) * rad;
 s  = xc + int(cos(q)*r);
 ss = yc + int(sin(q)*r);
 
 display.drawLine(xc,yc,s,ss,BLACK);

 //Text print
 if (d > 270 || d < 90)
 {
  y=yc+3;
 }
 else
 {
  y=yc-10;
 }
 display.setTextSize(1);
 display.setCursor(xc-9,y);
 display.println(Format3Degrees(d));
}
 display.display();
 OldDegrees=d;//Backup now
 Serial.println(d);
}

String Format3Degrees(int d){
  String str;
  int digits[3];
  int reminder; 
  digits[0]=d/100;
  reminder=d%100;
  digits[1]=reminder/10;
  reminder=reminder%10;
  digits[2]=reminder;
  //str+='%';
  str+=digits[0];
  str+=digits[1];
  str+=digits[2];
  return str;
}


void setup(){
  Serial.begin(9600);

  display.begin();
  // init done
  // you can change the contrast around to adapt the display
  // for the best viewing!
  display.setContrast(50);
}

void loop(){

Pelorus(999);
delay(500);
for (int i=0;i<800;i++)
{
 Pelorus(random(0,360));
 delay(100);
}

 delay(250);
}