/*
  HiFiLOGIX 0.1.9 
  
  dewdude@gmail.com - 09-JAN-2019
  
 */
#include <Wire.h>
#include <U8g2lib.h>
#include <IRremote.h>
#include <avr/pgmspace.h> 
/*#include <EEPROM.h>
#define di 1022
#define dx 1021
#define db 1020
#define dt 1023 */
#include "logo.h" // XBMP data for logo.

U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE); 

const char in0[] PROGMEM = "TAPE-2";
const char in1[] PROGMEM = "TAPE-1";
const char in2[] PROGMEM = "AUX";
const char in3[] PROGMEM = "TUNER";
const char in4[] PROGMEM = "PHONO-1";
const char in5[] PROGMEM = "PHONO-2";

const char * const inputs[] PROGMEM ={in0,in1,in2,in3,in4,in5}; // Drop the entire array in to program space.

int latchPin = 11;
int clockPin = 9;
int dataPin = 12;
int IRin = 7;
int blanking = 5;
int matrix = A0;
IRrecv remote(IRin);
decode_results ircode;
char txt[8];

void DontCrossTheStreams(byte op, int x, int i)             // There's something very important I forgot to tell you.
{                                                           // Don't cross the streams.
    strcpy_P(txt, (char*)pgm_read_word(&(inputs[i])));      // Why?
    digitalWrite(latchPin, LOW);                            // It would be bad.
    shiftOut(dataPin, clockPin, LSBFIRST, op);              // What do you mean, bad?
    digitalWrite(latchPin, HIGH);                           // Imagine all life as you know
    u8g2.clearBuffer();                                     // it stopping instaneously
    u8g2.drawStr(x,30,txt);                                 // and every molecule in
    u8g2.sendBuffer();                                      // your body exploding
    EEPROM.update(db, op);                                  // at the speed of light.
    EEPROM.update(dx, x);                                   // Total protonic reversal.
    EEPROM.update(di, i);                                   // That's bad.
}                                                           // Important safety tip, thanks Egon.



/* void eeprominit() {                                         // This checks the EEPROM to see if it's
                                                            // been initialized by the code before.
if (EEPROM.read(dt) == 'T') {                               // Check address 1023 for init flag "T"
    return;
  } else {
    EEPROM.write(db, 16);
    EEPROM.write(dx, 32);
    EEPROM.write(di, 2);
    EEPROM.write(dt, 'T');
  }
} */

void setup()
{
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);  
  pinMode(clockPin, OUTPUT);
  pinMode(blanking, OUTPUT);
  //eeprominit();
  u8g2.begin();
  remote.enableIRIn();
  u8g2.firstPage();                       // Logo is now bitmapped and since I only call it
    do {                                  // once, it doesn't need it's own function.
    u8g2.drawXBMP(14,4,hifilogix_width,hifilogix_height,hifilogix_bits);
    } while ( u8g2.nextPage() );
  delay(2000);                            // It takes the Denon about 4.5 seconds to kick speakers on.
  u8g2.setFont(u8g2_font_logisoso28_tr);  
  //DontCrossTheStreams(EEPROM.read(db),EEPROM.read(dx),EEPROM.read(di));  // THIS IS NO LONGER STATIC IN THE BETA! (yay.)
  DontCrossTheStreams(16,32,2);
  digitalWrite(blanking,HIGH);            // Now drives a logic inverter.
}

void loop()
{
int mx = analogRead(matrix);
byte icode = 0;                           // I changed how I handed the inputs.
if (remote.decode(&ircode)) {
    icode = ircode.value;
    remote.resume();    
}
// I don't know if it improves things, but I sure like how much smaller this section is.
if ((mx > 100 && mx < 200) || (icode == 0x97)) DontCrossTheStreams(64,10,0); // The code I originally used to figure out my
if ((mx > 500 && mx < 600) || (icode == 0x67)) DontCrossTheStreams(32,10,1); // remote codes returned 3 bytes in hex. I can't 
if ((mx > 900 && mx < 950) || (icode == 0x4F)) DontCrossTheStreams(16,32,2); // remember what that code was, but I only need 
if ((mx > 1000)            || (icode == 0xCF)) DontCrossTheStreams(8,18,3);  // the last bit with the remote I'm using. 
if ((mx > 820 && mx < 899) || (icode == 0xE7)) DontCrossTheStreams(6,1,4);   // I'm working on making the bare-bones utility I
if ((mx > 700 && mx < 800) || (icode == 0x85)) DontCrossTheStreams(5,1,5);   // wrote a bit more user-friendly.
delay(200);
}