public static void ShowSpecialSymbols2(Hd44780 lcd)
{
// We have space for eight custom characters
var bell = new byte[] { 0x04, 0x0e, 0x0e, 0x0e, 0x1f, 0x00, 0x04, 0x00 };
var note = new byte[] { 0x02, 0x03, 0x02, 0x0e, 0x1e, 0x0c, 0x00, 0x00 };
var clock = new byte[] { 0x00, 0x0e, 0x15, 0x17, 0x11, 0x0e, 0x00, 0x00 };
var heart = new byte[] { 0x00, 0x0a, 0x1f, 0x1f, 0x0e, 0x04, 0x00, 0x00 };
var duck = new byte[] { 0x00, 0x0c, 0x1d, 0x0f, 0x0f, 0x06, 0x00, 0x00 };
var check = new byte[] { 0x00, 0x01, 0x03, 0x16, 0x1c, 0x08, 0x00, 0x00 };
var cross = new byte[] { 0x00, 0x1b, 0x0e, 0x04, 0x0e, 0x1b, 0x00, 0x00 };
var retArrow = new byte[] { 0x01, 0x01, 0x05, 0x09, 0x1f, 0x08, 0x04, 0x00 };
lcd.CreateCustomCharacter(0, bell);
lcd.CreateCustomCharacter(1, note);
lcd.CreateCustomCharacter(2, clock);
lcd.CreateCustomCharacter(3, heart);
lcd.CreateCustomCharacter(4, duck);
lcd.CreateCustomCharacter(5, check);
lcd.CreateCustomCharacter(6, cross);
lcd.CreateCustomCharacter(7, retArrow);
lcd.SetCursorPosition(0, 3);
var msg = $"\x0\x1\x2\x3\x4\x5\x6\x7 \x8\x9\xA";
lcd.Write(msg);
}
public static void Main(string[] args)
{
var settings = new I2cConnectionSettings(0x00, 0x27);
using var device = new UnixI2cDevice(settings);
using var lcd = new Hd44780(new Size(20, 4), new I2C4Bit(device));
var name0 = File.ReadAllText("/sys/class/thermal/thermal_zone0/type").Substring(0, 3);
var name1 = File.ReadAllText("/sys/class/thermal/thermal_zone1/type").Substring(0, 3);
lcd.BacklightOn = true;
ShowSpecialSymbols(lcd);
for (var i = 0; i < 16 * 16; i++)
{
var temp0 = File.ReadAllText("/sys/class/thermal/thermal_zone0/temp");
var x0 = float.Parse(temp0);
var y0 = x0 * 9.0f / 5000.0f + 32.0f;
var msg0 = $"{name0}: {y0:F2}\xDF";
lcd.SetCursorPosition(0, 0);
lcd.Write(msg0);
var temp1 = File.ReadAllText("/sys/class/thermal/thermal_zone1/temp");
var x1 = float.Parse(temp1);
var y1 = x1 * 9.0f / 5000.0f + 32.0f;
var msg1 = $"{name1}: {y1:F2}\xDF";
lcd.SetCursorPosition(0, 1);
lcd.Write(msg1);
// Thread.Sleep(500);
ShowSpecialSymbols(lcd);
var build = new StringBuilder();
lcd.SetCursorPosition(0, 3);
for (var j = 0; j < 20; j++)
{
build.Append($"{(char)(16 * (i / 16) + j)}");
}
lcd.SetCursorPosition(0, 3);
lcd.Write(build.ToString());
}
lcd.BacklightOn = false;
lcd.Clear();
}