uint8_t font[16][8]=
{
  {0x1c, 0x22, 0x22, 0x2a, 0x22, 0x22, 0x1c, 0x00}, // 0
  {0x08, 0x18, 0x08, 0x08, 0x08, 0x08, 0x1c, 0x00}, // 1
  {0x1c, 0x22, 0x02, 0x04, 0x08, 0x10, 0x3e, 0x00}, // 2
  {0x3e, 0x04, 0x08, 0x04, 0x02, 0x22, 0x1c, 0x00}, // 3
  {0x04, 0x0c, 0x14, 0x24, 0x3e, 0x04, 0x04, 0x00}, // 4
  {0x3e, 0x20, 0x3c, 0x02, 0x02, 0x22, 0x1c, 0x00}, // 5
  {0x0c, 0x10, 0x20, 0x3c, 0x22, 0x22, 0x1c, 0x00}, // 6
  {0x3e, 0x02, 0x04, 0x08, 0x10, 0x10, 0x10, 0x00}, // 7
  {0x1c, 0x22, 0x22, 0x1c, 0x22, 0x22, 0x1c, 0x00}, // 8
  {0x1c, 0x22, 0x22, 0x1e, 0x02, 0x04, 0x18, 0x00}, // 9
  {0x1c, 0x22, 0x22, 0x3e, 0x22, 0x22, 0x22, 0x00}, // A
  {0x3c, 0x12, 0x12, 0x1c, 0x12, 0x12, 0x3c, 0x00}, // B
  {0x1c, 0x22, 0x20, 0x20, 0x20, 0x22, 0x1c, 0x00}, // C
  {0x3c, 0x12, 0x12, 0x12, 0x12, 0x12, 0x3c, 0x00}, // D
  {0x3e, 0x10, 0x10, 0x1c, 0x10, 0x10, 0x3e, 0x00}, // E
  {0x3e, 0x10, 0x10, 0x1c, 0x10, 0x10, 0x10, 0x00}, // F
};