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#1766 Sparkfun LCD

Posted by Eric Burdo on 04 September 2010 - 09:21 PM in Netduino 2 (and Netduino 1)

I have the same LCD as mentioned by Derek... anyone had any luck getting this to work yet?

If I connect to the 2nd bus on the shield, and use the following code... I get the LCD to blank... but that's it.

//Setup the ports
      OutputPort LCD_RS = new OutputPort(Pins.GPIO_PIN_D10, false);
      OutputPort LCD_RW = new OutputPort(Pins.GPIO_PIN_D11, false);
      OutputPort LCD_E = new OutputPort(Pins.GPIO_PIN_D12, false);    //enable

      OutputPort LCD_D4 = new OutputPort(Pins.GPIO_PIN_D13, false);
      OutputPort LCD_D5 = new OutputPort(Pins.GPIO_PIN_A0, false);
      OutputPort LCD_D6 = new OutputPort(Pins.GPIO_PIN_A1, false);
      OutputPort LCD_D7 = new OutputPort(Pins.GPIO_PIN_A2, false);


      LCD_RS.Write(false);
      //Send 0x28, function set: 4 bits, 1 line, 5x8 dots
      LCD_D7.Write(false); // 0
      LCD_D6.Write(false); // 0
      LCD_D5.Write(true); // 1
      LCD_D4.Write(false); // 0


      LCD_E.Write(true);
      LCD_E.Write(false);


      Thread.Sleep(50);
      LCD_D7.Write(true); // 1
      LCD_D6.Write(false); // 0
      LCD_D5.Write(false); // 0
      LCD_D4.Write(false); // 0

      LCD_E.Write(true);
      LCD_E.Write(false);

      //Send 0x0C 0000 1100// display control: turn display on, cursor off, no blinking
      Thread.Sleep(50);
      LCD_D7.Write(false); //0
      LCD_D6.Write(false); //0
      LCD_D5.Write(false); //0
      LCD_D4.Write(false); //0

      LCD_E.Write(true);
      LCD_E.Write(false);

      Thread.Sleep(50);
      LCD_D7.Write(true); //1
      LCD_D6.Write(true); //1
      LCD_D5.Write(false); //0
      LCD_D4.Write(false); //0

      LCD_E.Write(true);
      LCD_E.Write(false);