PololuSH1106.h

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// Copyright (C) Pololu Corporation.  See www.pololu.com for details.
 
 
#pragma once
 
#include "PololuSH1106Main.h"
 
class PololuSH1106Core
{
public:
  void setPins(uint8_t clk, uint8_t mos, uint8_t res = 255, uint8_t dc = 255,
    uint8_t cs = 255)
  {
    clkPin = clk;
    mosPin = mos;
    resPin = res;
    dcPin = dc;
    csPin = cs;
  }
 
  void initPins()
  {
    if (resPin != 255) { pinMode(resPin, OUTPUT); }
    pinMode(clkPin, OUTPUT);
    digitalWrite(clkPin, LOW);
    pinMode(mosPin, OUTPUT);
    if (dcPin != 255) { pinMode(dcPin, OUTPUT); }
    if (csPin != 255) { pinMode(csPin, OUTPUT); }
  }
 
  void reset()
  {
    if (resPin == 255) { return; }
    digitalWrite(resPin, LOW);
    delayMicroseconds(10);
    digitalWrite(resPin, HIGH);
    delayMicroseconds(10);
  }
 
  void sh1106TransferStart()
  {
    pinMode(clkPin, OUTPUT);
    digitalWrite(clkPin, LOW);
    pinMode(mosPin, OUTPUT);
    if (csPin != 255) { digitalWrite(csPin, LOW); }
  }
 
  void sh1106TransferEnd()
  {
    if (csPin != 255) { digitalWrite(csPin, HIGH); }
  }
 
  void sh1106CommandMode()
  {
    dataMode = 0;
    if (dcPin != 255) { digitalWrite(dcPin, LOW); }
  }
 
  void sh1106DataMode()
  {
    dataMode = 1;
    if (dcPin != 255) { digitalWrite(dcPin, HIGH); }
  }
 
  void sh1106Write(uint8_t d)
  {
    if (dcPin == 255)
    {
      digitalWrite(clkPin, LOW);
      digitalWrite(mosPin, dataMode);
      digitalWrite(clkPin, HIGH);
    }
 
    digitalWrite(clkPin, LOW);
    digitalWrite(mosPin, d >> 7 & 1);
    digitalWrite(clkPin, HIGH);
 
    digitalWrite(clkPin, LOW);
    digitalWrite(mosPin, d >> 6 & 1);
    digitalWrite(clkPin, HIGH);
 
    digitalWrite(clkPin, LOW);
    digitalWrite(mosPin, d >> 5 & 1);
    digitalWrite(clkPin, HIGH);
 
    digitalWrite(clkPin, LOW);
    digitalWrite(mosPin, d >> 4 & 1);
    digitalWrite(clkPin, HIGH);
 
    digitalWrite(clkPin, LOW);
    digitalWrite(mosPin, d >> 3 & 1);
    digitalWrite(clkPin, HIGH);
 
    digitalWrite(clkPin, LOW);
    digitalWrite(mosPin, d >> 2 & 1);
    digitalWrite(clkPin, HIGH);
 
    digitalWrite(clkPin, LOW);
    digitalWrite(mosPin, d >> 1 & 1);
    digitalWrite(clkPin, HIGH);
 
    digitalWrite(clkPin, LOW);
    digitalWrite(mosPin, d >> 0 & 1);
    digitalWrite(clkPin, HIGH);
  }
 
private:
  uint8_t clkPin = 13, mosPin = 13, resPin = 255, dcPin = 255, csPin = 255;
  bool dataMode;
};
 
class PololuSH1106 : public PololuSH1106Main<PololuSH1106Core>
{
public:
  PololuSH1106(uint8_t clk, uint8_t mos, uint8_t res = 255, uint8_t dc = 255,
    uint8_t cs = 255)
  {
    core.setPins(clk, mos, res, dc, cs);
  }
};