Ok, so you connected your cable to this 2x3 socket where pins are labled with D2, D3, D4? If these pins refer to the digital pins of your Arduino Board, then i see a mismatch between D2, D3 and D4 and your inital sketch which probably expect (according to the comment) pins at D8, D9 and D3.

All in all it is not clear (at least to me) how the display is connected to the Arduino and which pins are really used by your software.

Oliver

I found the BDF font format very suitable: It is a plain text bitmap font format. Glyphs are stored as hex numbers: http://en.wikipedia.org/wiki/Glyph_Bitmap_Distribution_Format

Many tools can edit/export BDF (e.g. http://hukka.ncn.fi/?fony) or convert from truetype to BDF (e.g. FontForge or http://www.math.nmsu.edu/~mleisher/Software/otf2bdf/).


Oliver

I never heard about this type of cable 

Oliver

Seems to be a Seiko G1213 LCD. See attachment for the pins...

Oliver

the pins are incorrect?
so what do i do to fix it?

Difficult to say without a picture/description of your setup.

Oliver

http://code.google.com/p/u8glib/

Oliver

Hi

I suggest to force PSB to the intended level.
The "send()" procedure looks different than the one i programmed for u8glib: http://code.google.com/p/u8glib/source/browse/csrc/u8g_com_arduino_parallel.c.

Oliver

Will your Makefile work with Serial.print?
If yes, any idea why my Makefile fails with Serial.print?

Oliver

Thanks a lot for the feedback!

Oliver

These sleep functions are only available for some display types. What is your exact constructor line?

If I put a power transistor between the mega's +5v and Vcc on the display to turn it on and off will that damage the display with SDA and SCL lines still active?

Probably not, but you need to reinit the display. You can use u8g.begin() for this. All other settings are also lost...

Oliver

Is there a way to reset the display system (software part), without resetting the arduino?

There is the procedure "begin" (http://code.google.com/p/u8glib/wiki/userreference#begin) which does a reset of the display for newer versions of U8glib.

Oliver

This could be a T6963 based display, so

Code:

U8GLIB_T6963_240X128(d0, d1, d2, d3, d4, d5, d6, d7, cs, a0, wr, rd, reset)

might work.

Remember to apply a variable resistor as described in chapter 4.1 of your user manual and also select the 8x8 font for this display (apply GND to FS1, see chapter 4.3)

Download U8glib here: http://code.google.com/p/u8glib/downloads/list
U8glib documentation: http://code.google.com/p/u8glib/wiki/u8glib?tm=6

Oliver

Hi

Für U8glib (http://code.google.com/p/u8glib/) hatte ich mich entschieden das XBM Format zu unterstützen. Vorteile:
* Standard Bildformat (z.B. Export via Gimp),
* gültiger C-Code (XBM-Datei im Editor öffnen, alles markieren und in die Arduino IDE kopieren),
* sehr einfaches Format.

Der Code zum Auslesen des XBM befindet sich hier: http://code.google.com/p/u8glib/source/browse/csrc/u8g_bitmap.c

Grüße,
Oliver

I have updated your inital Makefile to include USB support (attached). But still the serial communication is not working. I have no idea why...

Oliver

Edit: The screen terminal emulator (used in the Makefile) can be terminated with Ctrl-a Backslash.

Hi

Your Makefile works fine. But the Serial is not activated during compilation state. If you remove the "Serial" commands from your example, then the blinking will work:

Code:

enum constants {
  ledpin=13
};
void setup() {
  // put your setup code here, to run once:
    // initialize the digital pin as an output.
  pinMode(ledpin, OUTPUT);   
  //Serial.begin(115200);
  //Serial.println("Configuration complete");
}

void loop() {
  // put your main code here, to run repeatedly:
 static bool ledstate=false;
 //Serial.print("led is ");
 //Serial.println(ledstate);
 digitalWrite(ledpin,ledstate);
 ledstate=!ledstate;
 delay(1000);
}

Oliver