private static string Backlight(string data, List <string> _)
{
string ret = "ok";
Lcd1602 lcd = new Lcd1602();
lcd.OpenDevice("/dev/i2c-1", LCD1602_ADDRESS);
lcd.Init();
switch (data.ToLower())
{
case "on":
lcd.DisplayOn();
break;
case "off":
lcd.DisplayOff();
break;
default:
ret = "Usage: backlight on|off";
break;
}
lcd.CloseDevice();
return(ret);
}
private static string Display(string data, List <string> _)
{
int numQuotes = data.Count(c => c == '\"');
if (data.First() != '\"' || data.Last() != '\"' && (numQuotes != 2 && numQuotes != 4))
{
return("bad format");
}
Lcd1602 lcd = new Lcd1602();
lcd.OpenDevice("/dev/i2c-1", LCD1602_ADDRESS);
lcd.Init();
lcd.Clear();
if (numQuotes == 2)
{
lcd.Write(0, 0, data.Between("\"", "\""));
}
else
{
// two lines
lcd.Write(0, 0, data.Between("\"", "\""));
lcd.Write(0, 1, data.RightOf("\"").RightOf("\"").Between("\"", "\""));
}
lcd.CloseDevice();
return("ok");
}