Es haut immernoch nciht hin, bin langsam am verzweifeln.
Ich habe alles so angeschlossen wie hier: http://www.goblack.de/desy/digitalt/...ea240-i2c.html
Nur wenn ich Daten sende reagiert das Display mit abschalten...

Ich habe mit I2C noch garkeine Erfahrung...
HIer mein Code
Code:
            byte[] data = new byte[1];

            I2CDevice I2C = new I2CDevice(new I2CDevice.Configuration(0x4e, 100));
            I2CDevice.I2CTransaction[] befehl = new I2CDevice.I2CTransaction[14]
            {
                I2CDevice.CreateWriteTransaction(new byte[] { 0x11 }),        
                I2CDevice.CreateWriteTransaction(new byte[] { 0x01 }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x1b }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x44 }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x4c }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x1b }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x47 }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x44 }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x00 }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x00 }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0xef }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0x7f }),
                I2CDevice.CreateWriteTransaction(new byte[] { 0xda }),
                I2CDevice.CreateReadTransaction(data)
            };

            i2c.Execute(befehl, 1000);

            OutputPort led = new OutputPort(Pins.ONBOARD_LED, false);
    
            if (data[0] != 0)
                led.Write(true);

            if (data[0] == 0)
            {
                led.Write(true);
                Thread.Sleep(200);
                led.Write(false);
                Thread.Sleep(200);
                led.Write(true);
                Thread.Sleep(200);
                led.Write(false);
            }
Was ich da versuche zu senden ist das Beispiel auf Seite 8: http://www.lcd-module.de/fileadmin/p.../edip240-7.pdf

Die I2C PullUp Widerständ haben 5,1kOhm.
Bin für jeden Tipp dankebar.