PureDigit.h

/*
  GMSN! Pure Digit v1
  28th July 2018
  cc-by 4.0
  Rob Spencer
  gmsn.co.uk
  forum.gmsn.co.uk
  Open Source Synth Designs.

  This library is used to control the GMSN! Pure Digit. A small programmable utility module which accepts +/- 10V in,
  does some digital processing, and outputs a +/-10V signal. It has a 2 Channel 12bit ADC In, 12bit DAC Out, a 24
  position rotary encoder with switch and a 7 segment LED display.

  Examples include:   Noise, Clock Divider, Micro Tuner, Bit Crusher, Drums, Rhythm Player, Swing Machine, LFO, Step LFO,
  DC Level, Module Testing Functions, Frequency Counter, DC Meter

  See README.md for details on the available methods and calibrate routine.

  Example Sketch:

  <code>
  #include <PureDigit.h>

  PureDigit digit;

  //Setup variables
  int encPos = 1;
  int cvIn, cvOut;


  void setup() {

   digit.begin();

  }

  void loop() {

     encPos = digit.encodeVal(encPos);  //Increment or decrement the varible encPos
     digit.displayLED(encPos, 2, 0);    //Display the value of encPos as a Positional Representation with no decimal point
     digit.dacWrite(random(4095));      //Output a random value between 0 and 4095, which is analogue +/- 10V
     delay(encPos);                     //Delay for encPos milliseconds.

  }
  </code>
*/


#ifndef PureDigit_h
#define PureDigit_h

#include <Arduino.h>
#include <SPI.h>

class PureDigit {
public:
  PureDigit();
  void dontCalibrate();
  void begin();
  void calibrate();
  int encodeVal(int val);
  bool getSwitchState();
  void displayLED(int digit, byte mode, bool dp);
  void displayOff();
  void dacWrite(int value);
  void dacWriteCal(int value);
  int adcRead(byte channel);

private:
  void flashLED(int number, int repeats, int delays);
  int encAVal, encALast, encBVal;
  float Ge1, Ge2, Oe1, Oe2;
};

#endif