#include <Arduino.h>
#include <U8g2lib.h>
#include <Wire.h>
#include <RotaryEncoder.h>

#define bmp_width 128
#define bmp_height 64

static unsigned char bmp_about[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x80, 0x18, 0xff, 0xff, 0xc0,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x80,
0x18, 0xff, 0x7f, 0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x3f, 0x80, 0x18, 0xff, 0x3f, 0xc0, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0x1f, 0xff, 0x3f, 0xfe,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe,
0x1f, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x3f, 0xfe, 0x18, 0x07, 0x33, 0xfe, 0x01, 0x8f, 0xf8, 0xf0,
0x80, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0x18, 0x07, 0x30, 0xfc,
0x01, 0x0c, 0x70, 0xf0, 0x00, 0xfe, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xe0,
0x18, 0x03, 0x70, 0xf0, 0x00, 0x0c, 0x60, 0x70, 0x00, 0xfe, 0xff, 0xff,
0xff, 0xff, 0x3f, 0xe0, 0x18, 0x63, 0xf0, 0xe0, 0x78, 0x0c, 0x60, 0x7c,
0x3c, 0xfe, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xe0, 0x18, 0xe3, 0xf0, 0xc1,
0x78, 0x8c, 0x63, 0x78, 0x3c, 0xfe, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe,
0x18, 0xe3, 0xf1, 0xc7, 0x00, 0x8c, 0xe3, 0x70, 0x00, 0xfe, 0xff, 0xff,
0xff, 0xff, 0x3f, 0xfe, 0x18, 0xe3, 0xf1, 0xc7, 0x00, 0x8e, 0xe3, 0x61,
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0x18, 0xe3, 0xf1, 0xc7,
0xf0, 0x8f, 0xe3, 0x63, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe,
0x18, 0x03, 0x30, 0xc0, 0x00, 0x8c, 0x63, 0x60, 0x00, 0xfe, 0xff, 0xff,
0xff, 0xff, 0x3f, 0xfe, 0x18, 0x03, 0x30, 0xe0, 0x01, 0x8c, 0x63, 0xe0,
0x00, 0xfe, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0x18, 0x07, 0x32, 0xf0,
0x03, 0x8c, 0x63, 0xf0, 0x01, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3c, 0xcc,
0x38, 0xe7, 0x8c, 0xa1, 0xeb, 0x8e, 0x71, 0xbe, 0x30, 0x83, 0xff, 0xff,
0xff, 0x7f, 0xbb, 0xb7, 0xd6, 0x5a, 0x6b, 0x3d, 0xe9, 0x6e, 0xad, 0xbd,
0xde, 0xee, 0xff, 0xff, 0xff, 0x7f, 0x38, 0x86, 0x18, 0x7a, 0x68, 0xb1,
0x1a, 0x8f, 0xb1, 0xbd, 0xd8, 0xef, 0xff, 0xff, 0xff, 0x7f, 0xbb, 0xb7,
0xd6, 0x5a, 0x6b, 0xbd, 0xbb, 0xef, 0xb5, 0xb5, 0xde, 0xee, 0xff, 0xff,
0xff, 0x7f, 0xbb, 0xb7, 0xd8, 0x66, 0x8b, 0xa1, 0xbb, 0xef, 0x6d, 0xce,
0x30, 0xef, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xc7, 0xee, 0xd7, 0x7a, 0xcc, 0x76, 0x9c, 0xb3, 0x87,
0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xb7, 0xee, 0xd7, 0xfa, 0xb6,
0x74, 0x6b, 0xad, 0xf7, 0xf6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7,
0xf1, 0xd7, 0xfa, 0x86, 0x72, 0x0c, 0xb5, 0xc7, 0xf8, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xb7, 0xfb, 0xd6, 0xfa, 0xb6, 0x76, 0x6b, 0xad, 0xf7,
0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xfb, 0x39, 0x43, 0xb4,
0x76, 0x6c, 0x25, 0x84, 0xf6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xdf, 0x62, 0x77, 0x98, 0xb1,
0xcf, 0xf8, 0x9c, 0x33, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xdf,
0x5a, 0x77, 0x6f, 0xad, 0xb7, 0x76, 0x6b, 0xad, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x1f, 0x62, 0x75, 0x0c, 0xb1, 0x87, 0xf8, 0x6d, 0x37,
0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xdf, 0x6a, 0x72, 0x6f, 0xad,
0xb7, 0xf6, 0x6e, 0xfb, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xdf,
0x5a, 0x77, 0x6f, 0x31, 0xb4, 0x78, 0x98, 0x21, 0xfe, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff
};

static unsigned char bmp_big[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,
0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x00,0x00,
0x00,0x00,0x00,0x00,0xe0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1f,0x00,
0x00,0x00,0x00,0x00,0x00,0xf8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3c,
0x00,0x00,0x00,0x00,0x00,0x00,0x3c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0xf0,0x00,0x00,0x00,0x00,0x00,0x00,0x0f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xe0,0x03,0x00,0x00,0x00,0x00,0xc0,0x07,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x80,0x0f,0x00,0x00,0x00,0x00,0xf0,0x01,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x3e,0x00,0x00,0x00,0x00,0x7c,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x78,0x00,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x01,0x00,0x00,0x80,0x07,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x07,0x00,0x00,0xe0,0x03,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1f,0x00,0x00,0xf8,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7c,0x00,0x00,0x3e,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x00,0x00,0x0f,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x03,0xc0,
0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x0f,
0xf0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x3e,0x7c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xf8,0x1f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0xe0,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xe0,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xf8,0x1f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x3e,0x7c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x80,0x0f,0xf0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x03,0xc0,0x03,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x00,0x00,0x0f,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7c,0x00,0x00,0x3e,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1f,0x00,0x00,0xf8,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x07,0x00,0x00,0xe0,0x03,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x01,0x00,0x00,0x80,
0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,0x00,0x00,0x00,
0x00,0x1e,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3e,0x00,0x00,
0x00,0x00,0x7c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x0f,0x00,
0x00,0x00,0x00,0xf0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x03,
0x00,0x00,0x00,0x00,0xc0,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,
0x00,0x00,0x00,0x00,0x00,0x00,0x0f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x3c,0x00,0x00,0x00,0x00,0x00,0x00,0x3c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x1f,0x00,0x00,0x00,0x00,0x00,0x00,0xf8,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x20,0x01,0x00,
0x00,0x00,0x00,0x00,0x00,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x0f,0x01,
0x00,0x00,0x80,0x40,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x01,0x00,0x00,0x80,0x40,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x21,0x71,0xde,0x39,0xde,0xe3,0x39,0x0e,0x1e,0xf1,0x00,0x00,0x00,0x00,0x00,
0x00,0x2f,0x81,0x22,0x46,0xa2,0x40,0x44,0x11,0x22,0x89,0x00,0x00,0x00,0x00,
0x00,0x00,0x21,0xf1,0x22,0x7e,0xa2,0x40,0x44,0x11,0x22,0x89,0x00,0x00,0x00,
0x00,0x00,0x00,0x21,0x89,0x22,0x06,0xa2,0x40,0x44,0x11,0x22,0x89,0x00,0x00,
0x00,0x00,0x00,0x00,0x21,0xf9,0x22,0x7a,0xa2,0xc3,0x39,0x0e,0x1e,0xf1,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x70,0x00,0x00,0x00
};

static unsigned char bmp_small[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,
0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x00,0x00,
0x00,0x00,0x00,0x00,0xe0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1f,0x00,
0x00,0x00,0x00,0x00,0x00,0xf8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3c,
0x00,0x00,0x00,0x00,0x00,0x00,0x3c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0xf0,0x00,0x00,0x00,0x00,0x00,0x00,0x0f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xe0,0x03,0x00,0x00,0x00,0x00,0xc0,0x07,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x80,0x0f,0x00,0x00,0x00,0x00,0xf0,0x01,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x3e,0x00,0x00,0x00,0x00,0x7c,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x78,0x00,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x01,0x00,0x00,0x80,0x07,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x07,0x00,0x00,0xe0,0x03,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1f,0x00,0x00,0xf8,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7c,0x00,0x00,0x3e,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x00,0x00,0x0f,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x03,0xc0,
0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x0f,
0xf0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x3e,0x7c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xf8,0x1f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0xe0,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xe0,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xf8,0x1f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x3e,0x7c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x80,0x0f,0xf0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x03,0xc0,0x03,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x00,0x00,0x0f,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7c,0x00,0x00,0x3e,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1f,0x00,0x00,0xf8,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x07,0x00,0x00,0xe0,0x03,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x01,0x00,0x00,0x80,
0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,0x00,0x00,0x00,
0x00,0x1e,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3e,0x00,0x00,
0x00,0x00,0x7c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x0f,0x00,
0x00,0x00,0x00,0xf0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x03,
0x00,0x00,0x00,0x00,0xc0,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,
0x00,0x00,0x00,0x00,0x00,0x00,0x0f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x3c,0x00,0x00,0x00,0x00,0x00,0x00,0x3c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x1f,0x00,0x00,0x00,0x00,0x00,0x00,0xf8,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x09,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x12,0x00,0x00,0x00,0x00,0x78,
0x08,0x00,0x00,0x00,0x04,0x02,0x00,0x00,0x00,0x00,0x12,0x00,0x00,0x00,0x00,
0x08,0x08,0x00,0x00,0x00,0x04,0x02,0x00,0x00,0x00,0x00,0x12,0x00,0x00,0x00,
0x00,0x08,0x89,0xf3,0xce,0xf1,0x1e,0xcf,0x71,0xf0,0xbc,0x73,0x12,0x00,0x00,
0x00,0x00,0x78,0x09,0x14,0x31,0x12,0x05,0x22,0x8a,0x10,0x44,0x84,0x12,0x00,
0x00,0x00,0x00,0x08,0x89,0x17,0xf1,0x13,0x05,0x22,0x8a,0xe0,0x44,0xf4,0x12,
0x00,0x00,0x00,0x00,0x08,0x49,0x14,0x31,0x10,0x05,0x22,0x8a,0x80,0x44,0x8c,
0x12,0x00,0x00,0x00,0x00,0x08,0xc9,0x17,0xd1,0x13,0x1d,0xce,0x71,0xf0,0x44,
0xfc,0x12,0x00,0x00
};

U8G2_SH1106_128X64_NONAME_F_HW_I2C U8G2(U8G2_R0, 5, 4, U8X8_PIN_NONE);

int values[84];                                            // array for sine values
int buffer[84];                                            // buffer array used to shift sine values

void initArrays(void){
// fill arrays
for (int i = 0; i < 84; i++){
    values[i] = 0;
    buffer[i] = 0;
  }
}

RotaryEncoder encoder(D9,D8);
#define pinSW D7
int menu = 1; 
int pos = 0;
int16_t value;
int16_t sens1 = 0;
int16_t sens2 = 0;
int16_t sens3 = 0;
int min_s1 = 400;
int min_s2 = 400;
int min_s3 = 410;
int max_s1 = 432;
int max_s2 = 434;
int max_s3 = 447;
bool leaving = false;

void setup() { 
  Wire.begin();
  U8G2.begin();
  initArrays();
  pinMode (pinSW,INPUT);
  pinMode (D8,INPUT);
  pinMode (D9,INPUT);
  encoder.setPosition(1);
  Serial.begin (115200);
  U8G2.drawXBM(0, 0, bmp_width, bmp_height, bmp_about);
  U8G2.sendBuffer();
  U8G2.clearBuffer();
  delay(2000);
  updateMenu();  
} 

void loop() { 
  updateEncoder();
}

void updateEncoder(){
  encoder.tick();
  menu = encoder.getPosition();

  if(pos != menu){
  pos = menu;
  updateMenu();
}

  if(!digitalRead(pinSW)){
  executeAction();
  delay(200);
  updateMenu();
  }
  
}

int getValue(int sens){
  byte a,b;
  Wire.requestFrom(sens, 2);

  a = Wire.read();
  b = Wire.read();

  value = a;
  value = value << 8 | b;
  
  return value;
}

 void graph(){
    leaving = false;
    U8G2.drawVLine(0, 0, 64);                               // draw Y-axis
    U8G2.drawHLine(0, 63, 128);                             // draw X-axis
    U8G2.drawCircle(108, 20, 19, U8G2_DRAW_ALL);
    
    if(!digitalRead(pinSW)){
      leaving = true;
      menu = 0;
      updateMenu();
    }
  
  sens1 = map(getValue(2),min_s1,max_s1,0,63);
  sens2 = map(getValue(3),min_s2,max_s2,0,63);
  sens3 = map(getValue(4),min_s3,max_s3,0,63);

  int average = (sens1 + sens2 + sens3) / 3;

  float r1 = getValue(2)/2;
  float r2 = getValue(3)/2;
  float r3 = getValue(4)/2;
  float rAvg = (r1+r2+r3) /3;

  float rErr1 = abs(r1-rAvg);
  float rErr2 = abs(r2-rAvg);
  float rErr3 = abs(r3-rAvg);
  float maxErr = max(rErr1, max(rErr2, rErr3));

  float round = 100 - maxErr / rAvg * 100;

  int dia = map(average,0,63,150,200);
  char cstr[6];
  itoa(dia,cstr,10);
  cstr[3] = cstr[2];
  cstr[2] = cstr[1];
  cstr[1] = ',' ;
  cstr[4] = 'm' ;
  cstr[5] = 'm' ;
  U8G2.setFont(u8g2_font_t0_11_tr);
  U8G2.setCursor(90, 60);
  U8G2.print(cstr);
  U8G2.setCursor(93,20);
  U8G2.print(round);
  U8G2.setFont(u8g2_font_t0_15_te);
  U8G2.setCursor(104,32);
  U8G2.print("%");
  
  if(average < -10) {
    U8G2.clearBuffer();
    U8G2.clearDisplay();
    while(digitalRead(pinSW)) {
      U8G2.drawXBM(0, 0, bmp_width, bmp_height, bmp_small);
      U8G2.sendBuffer();
      U8G2.clearBuffer();
    }
  }

  if(average > 70) {
    U8G2.clearBuffer();
    U8G2.clearDisplay();
    while(digitalRead(pinSW)) {
      U8G2.drawXBM(0, 0, bmp_width, bmp_height, bmp_big);
      U8G2.sendBuffer();
      U8G2.clearBuffer();
    }
  }
    
    for (int j = 0 ; j < 84; j++){
      values[j] = buffer[j];                                // transfer values from buffer to output array
      U8G2.drawPixel(j+4, 63-values[j]);                       // draw the sine wave with values from the array shifted 4 pixels to the right
    }
      U8G2.sendBuffer();
      U8G2.clearBuffer();
    for (int x = 0 ; x < 84; x++){                         // loop array via buffer
      if(x-1 < 0){
        buffer[x] = average;
      } else {
      buffer[x] = values[x-1];
      }
    }
  }

  void displaySensors() {
    
    if(!digitalRead(pinSW)){
      menu = 0;
      updateMenu();
    }

    U8G2.setFont(u8g2_font_t0_11_tr);
      U8G2.setCursor(0, 20);
      U8G2.print("Sensor 1: ");
      U8G2.setCursor(64, 20);
      U8G2.print(getValue(2));
      U8G2.setCursor(0, 40);
      U8G2.print("Sensor 2: ");
      U8G2.setCursor(64, 40);
      U8G2.print(getValue(3));
      U8G2.setCursor(0, 60);
      U8G2.print("Sensor 3: ");
      U8G2.setCursor(64, 60);
      U8G2.print(getValue(4));
      U8G2.sendBuffer();
      U8G2.clearBuffer();
  }

  void calibrate() {
    leaving = false;

    if(!digitalRead(pinSW)){
      leaving = true;
      menu = 0;
      updateMenu();
    }
    
    do {
      U8G2.setFont(u8g2_font_t0_11_tr);
      U8G2.setFontPosCenter();
      U8G2.setCursor(10, 10);
      U8G2.print("CALIBRATE 1.5mm");
      U8G2.setFont(u8g2_font_t0_22_mf);
      U8G2.setFontPosBaseline();
      U8G2.drawButtonUTF8(15, 50, U8G2_BTN_INV, 0,  2,  2, "MIN" );
      U8G2.setCursor(65, 50);
      U8G2.print(getValue(2));
      U8G2.sendBuffer();
      U8G2.clearBuffer();
    } while(digitalRead(pinSW));
    min_s1 = getValue(2);
    min_s2 = getValue(3);
    min_s3 = getValue(4);
    delay(500);

    do {
      U8G2.setFont(u8g2_font_t0_11_tr);
      U8G2.setFontPosCenter();
      U8G2.setCursor(10, 10);
      U8G2.print("CALIBRATE 2mm");
      U8G2.setFont(u8g2_font_t0_22_mf);
      U8G2.setFontPosBaseline();
      U8G2.drawButtonUTF8(15, 50, U8G2_BTN_INV, 0,  2,  2, "MAX" );
      U8G2.setCursor(65, 50);
      U8G2.print(getValue(2));
      U8G2.sendBuffer();
      U8G2.clearBuffer();
    } while(digitalRead(pinSW));
    max_s1 = getValue(2);
    max_s2 = getValue(3);
    max_s3 = getValue(4);
    delay(500);

    do {
      U8G2.setFont(u8g2_font_t0_11_tr);
      U8G2.setCursor(60, 8);
      U8G2.print("MIN");
      U8G2.setCursor(90, 8);
      U8G2.print("MAX");
      U8G2.setCursor(0, 24);
      U8G2.print("Sensor 1: ");
      U8G2.setCursor(60, 24);
      U8G2.print(min_s1);
      U8G2.setCursor(90, 24);
      U8G2.print(max_s1);
      U8G2.setCursor(0, 44);
      U8G2.print("Sensor 2: ");
      U8G2.setCursor(60, 44);
      U8G2.print(min_s2);
      U8G2.setCursor(90, 44);
      U8G2.print(max_s2);
      U8G2.setCursor(0, 64);
      U8G2.print("Sensor 3: ");
      U8G2.setCursor(60, 64);
      U8G2.print(min_s3);
      U8G2.setCursor(90, 64);
      U8G2.print(max_s3);
      U8G2.sendBuffer();
      U8G2.clearBuffer();
    } while(digitalRead(pinSW));
  }

 void updateMenu() {
  switch (menu) {

    case 0:
      delay(200);
      menu = 1;
      encoder.setPosition(1);
      break;

    case 1:
      U8G2.clearDisplay();
      U8G2.setFont(u8g2_font_profont22_tr);
      U8G2.setCursor(0, 25);
      U8G2.print(">");
      U8G2.setCursor(20, 25);
      U8G2.print("Measure");
      U8G2.setCursor(20, 55);
      U8G2.print("Calibrate");
      U8G2.sendBuffer();
      break;

    case 2:
      U8G2.clearDisplay();
      U8G2.setFont(u8g2_font_profont22_tr);
      U8G2.setCursor(20, 25);
      U8G2.print("Measure");
      U8G2.setCursor(0, 55);
      U8G2.print(">");
      U8G2.setCursor(20, 55);
      U8G2.print("Calibrate");
      U8G2.sendBuffer();
      break;

    case 3:
      U8G2.clearDisplay();
      U8G2.setFont(u8g2_font_profont22_tr);
      U8G2.setCursor(0, 25);
      U8G2.print(">");
      U8G2.setCursor(20, 25);
      U8G2.print("Sensors");
      U8G2.setCursor(20, 55);
      U8G2.print("About");
      U8G2.sendBuffer();
      break;

    case 4:
      U8G2.clearDisplay();
      U8G2.setFont(u8g2_font_profont22_tr);
      U8G2.setCursor(20, 25);
      U8G2.print("Sensors");
      U8G2.setCursor(0, 55);
      U8G2.print(">");
      U8G2.setCursor(20, 55);
      U8G2.print("About");
      U8G2.sendBuffer();
      break;

    case 5:
      menu = 4;
      encoder.setPosition(4);
      break;
  }
}

void executeAction() {
  switch (menu) {
    case 0:
    U8G2.clearDisplay();
    delay(500);
    updateMenu();
    break;

    case 1:
    U8G2.clearDisplay();
    delay(500);
    while(digitalRead(pinSW) && !leaving) {
      graph();
    }
      break;

    case 2:
    U8G2.clearDisplay();
    delay(500);
    while(digitalRead(pinSW) && !leaving) {
      calibrate();
    }
      break;

    case 3:
    U8G2.clearDisplay();
    delay(500);
    while(digitalRead(pinSW) && !leaving) {
      displaySensors();
    }
      break;

    case 4:
    U8G2.clearDisplay();
    delay(500);
    while(digitalRead(pinSW) && !leaving){
      U8G2.drawXBM(0, 0, bmp_width, bmp_height, bmp_about);
      U8G2.sendBuffer();
      U8G2.clearBuffer();
    }
      break;
  }
}