#include <U8glib.h>


//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0 | U8G_I2C_OPT_NO_ACK | U8G_I2C_OPT_FAST); // Fast I2C / TWI
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE);

int progress = 0;

void setup() {
  Serial.begin(115200);
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
  pinMode(A2, INPUT);
  pinMode(A3, INPUT);
  pinMode(A4, INPUT);
  pinMode(A5, INPUT);
  pinMode(A6, INPUT);
  pinMode(A7, INPUT);

  u8g.setFont(u8g_font_fub14);
  u8g.setColorIndex(1);

  u8g.firstPage();
  do {
    u8g.drawFrame(0, 0, 127, 63);
    u8g.drawStr(10, 28, "AIOT QTC");
    u8g.drawStr(5, 50, "GPIO Tester");

  } while ( u8g.nextPage() );
  delay(5000);
}

void loop() {
  int Volt1 = analogRead(A0);
  int Volt2 = analogRead(A1);
  int Volt3 = analogRead(A2);
  int Volt4 = analogRead(A3);
  int Volt5 = analogRead(A4);
  int Volt6 = analogRead(A5);
  int Volt7 = analogRead(A6);
  int Volt8 = analogRead(A7);
  float Volt1F = Volt1 * (5.0 / 1023.0);
  float Volt2F = Volt2 * (5.0 / 1023.0);
  float Volt3F = Volt3 * (5.0 / 1023.0);
  float Volt4F = Volt4 * (5.0 / 1023.0);
  float Volt5F = Volt5 * (5.0 / 1023.0);
  float Volt6F = Volt6 * (5.0 / 1023.0);
  float Volt7F = Volt7 * (5.0 / 1023.0);
  float Volt8F = Volt8 * (5.0 / 1023.0);
  String Volt1S = String(Volt1F, 2);
  String Volt2S = String(Volt2F, 2);
  String Volt3S = String(Volt3F, 2);
  String Volt4S = String(Volt4F, 2);
  String Volt5S = String(Volt5F, 2);
  String Volt6S = String(Volt6F, 2);
  String Volt7S = String(Volt7F, 2);
  String Volt8S = String(Volt8F, 2);
  char Volt1Array[10];
  Volt1S.toCharArray(Volt1Array, 5);
  char Volt2Array[10];
  Volt2S.toCharArray(Volt2Array, 5);
  char Volt3Array[10];
  Volt3S.toCharArray(Volt3Array, 5);
  char Volt4Array[10];
  Volt4S.toCharArray(Volt4Array, 5);
  char Volt5Array[10];
  Volt5S.toCharArray(Volt5Array, 5);
  char Volt6Array[10];
  Volt6S.toCharArray(Volt6Array, 5);
  char Volt7Array[10];
  Volt7S.toCharArray(Volt7Array, 5);
  char Volt8Array[10];
  Volt8S.toCharArray(Volt8Array, 5);

  u8g.setFont(u8g_font_6x12);
  u8g.firstPage();
  do {
    u8g.drawFrame(0, 0, 127, 63);
    u8g.drawStr(24, 10, "GPIO Voltage:");
    u8g.drawFrame(0, 12, 127, 4);
    u8g.drawBox(0, 13, progress, 2);
    u8g.drawFrame(0, 15, 127, 13);
    u8g.drawFrame(0, 27, 127, 13);
    u8g.drawFrame(0, 39, 127, 13);
    u8g.drawFrame(0, 51, 127, 13);
    u8g.drawLine(63,15,63,63);
    u8g.drawLine(16,15,16,63);
    u8g.drawLine(79,15,79,63);
    u8g.drawStr(6, 25, "1");
    u8g.drawStr(6, 37, "2");
    u8g.drawStr(6, 49, "3");
    u8g.drawStr(6, 61, "4");
    u8g.drawStr(69, 25, "5");
    u8g.drawStr(69, 37, "6");
    u8g.drawStr(69, 49, "7");
    u8g.drawStr(69, 61, "8");
    u8g.drawStr(29, 25, Volt1Array);
    u8g.drawStr(29, 37, Volt2Array);
    u8g.drawStr(29, 49, Volt3Array);
    u8g.drawStr(29, 61, Volt4Array);
    u8g.drawStr(92, 25, Volt5Array);
    u8g.drawStr(92, 37, Volt6Array);
    u8g.drawStr(92, 49, Volt7Array);
    u8g.drawStr(92, 61, Volt8Array);
  

    
  } while ( u8g.nextPage() );
  Serial.println(Volt1);
  //delay(100);

  if (progress < 126) {
    progress++;
  } else {
    progress = 0;
  }
}