chris stevens / 4spi_oled_ssd1305

SPKDisplay - A mbed display class and processing imaging tools for 128x64 OLEDs using the SSD1305 driver, connected via SPI. This variant drives a Unigraphics oled on the same driver but in page mode. Includes a simple 5x7 ascii font

Dependents:   univision_oled

Fork of spk_oled_ssd1305 by Toby Harris

OLED driver and demo for Univision oled display 128x64.

/media/uploads/pegcjs/_scaled_20130128_133126.jpg

Modified Toby Harris' code to run page mode addressing in 4 wire SPI on the Univision UG-2864HSWEG01 128X64 unit - often found for sale on ebay. That's where I got mine anyhow.

Wiring this was fairly straightforward but you really do have to ground all the unused pins EXCEPT for number 8 to get it to work.

Here's the layout - I made a little carrier using a 2x8 connector and a couple of headers mounted on a small piece of stripboard. You can see all the wire links that are used to ground the unused pins. It was pretty awkward setting the display to run in 4 wire spi - had to desolder and resolder three smd o ohm links on the back o fhte pcb - ended up using a microscope to see them.

/media/uploads/pegcjs/_scaled_layout.jpg

Here is the output of the demo code.

/media/uploads/pegcjs/_scaled_itworks.jpg.jpg

In page mode the display is effectively divided up into 8 horizontal strips, each 8 pixels high so lends itself nicley to displaying text in a 5x7 font. I've included the 5x7 lcd font in the code below.

Code

Import programunivision_oled

driver demo for univision oled dispaly

Last commit 29 Jan 2013 by chris stevens

#include "mbed.h"
#include "4spi_oled_ssd1305.h"

/* re writtten to cope with teh ssd1306 driven oled UG-2864HSWEG01 from univision
wiring for test circuit
OLED pins -FUNCTION-------MBED PINns
1 ----3.3V--- Vout (p40)
2 ----0.0V--- GND (p1)
3 ----------- GND (p1)
4 ----------- GND (p1)
5 ----------- GND (p1)
6 ----------- GND (p1)
7 ----------- GND (p1)
8 ----------- N/C
9 ----D1---- mosi (p5)
10 ---D0------sck(p7)
11 ----------- GND (p1)
12 ----------- GND (p1)
13 ---DC------ p10
14 ---RES----- p9
15 ---CS------ p8
*/



DigitalOut myled(LED1);

// Create object and load font
//SPKDisplay( mosiPin, clkPin,  csPin,  dcPin, resPin, Serial *debugSerial)
SPKDisplay screen(p5, p7, p8, p10, p9);
int main()
{
    char msg[22];
    sprintf(msg,"                      ");
//           01234567890abcdefghij

    int i=0;
    while(1==1) {
        myled=1;
        // nice logo output
        screen.welcome();
        wait(3);

        wait(2);
        for(i=0; i<5; i++) {
            myled=0;
            screen.inverse();
            wait(1);
            screen.normal();
            myled=1;
            wait(1);
        }

        screen.fontdemo();
        myled=0;
        wait(5);
        screen.clearBuffer();
        screen.sendBuffer();
        myled=1;
        wait(0.5);
        myled=0;
        wait(0.5);

        for(i=0; i<8; i++) {
            sprintf(msg,"HELLO WORLD %d",i);
            screen.textToBuffer(msg, i);
            screen.sendBuffer();
            screen.clearBuffer();
            myled=1;
            wait(1);
        }
    }


}

Diff: 4spi_oled_ssd1305.cpp

Revision:
5:6d2aded0cf41
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/4spi_oled_ssd1305.cpp	Tue Jan 29 09:56:25 2013 +0000
@@ -0,0 +1,670 @@
+// OLED display using SSD1305 driver
+// A library by *spark audio-visual
+
+/* Copyright (c) 2011 Toby Harris, MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "4spi_oled_ssd1305.h"
+#include "mbed.h"
+
+// re written to handle page mode on ssd1305 128x64 unit CJS 2013
+
+// nice logo - note the typo....
+static unsigned char logo_bits[] = {
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0xE0, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x04, 0x06,
+0x06, 0xFC, 0xF8, 0x00, 0x04, 0x06, 0x06, 0xFC, 0xF0, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00,
+0x04, 0x06, 0x06, 0x04, 0xFC, 0x60, 0x00, 0x60, 0xF8, 0x6C, 0x64, 0x66, 0x66, 0x64, 0x64, 0x78,
+0x60, 0x00, 0x60, 0xFC, 0x04, 0x06, 0x06, 0x04, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x07, 0x00, 0x00, 0x00,
+0x00, 0x07, 0x07, 0x00, 0x00, 0x00, 0x00, 0x07, 0x07, 0x00, 0x00, 0x00, 0x00, 0x07, 0x07, 0x00,
+0x02, 0x06, 0x06, 0x02, 0x03, 0x00, 0x00, 0x00, 0x01, 0x03, 0x02, 0x06, 0x06, 0x06, 0x02, 0x02,
+0x02, 0x00, 0x00, 0x03, 0x02, 0x06, 0x06, 0x02, 0x00, 0x07, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x20, 0x20, 0xF0, 0xF0,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x20, 0x20, 0x30, 0x20, 0x20, 0xE0, 0x80, 0x00, 0x00, 0x00,
+0x80, 0xE0, 0x20, 0x30, 0x30, 0x20, 0x20, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xC0, 0x60, 0x20, 0x30, 0x30, 0x20, 0x20, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x20, 0xF0, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
+0x40, 0x60, 0x20, 0x30, 0x30, 0x30, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xF0, 0xF0, 0x00, 0x00,
+0x80, 0xE0, 0x20, 0x20, 0x30, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0xFF, 0xFF,
+0x80, 0x80, 0x80, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xB0, 0x98, 0x8C, 0x87, 0x81, 0x00, 0x00, 0x00,
+0x01, 0x87, 0x84, 0x8C, 0x8C, 0x84, 0xC0, 0x7F, 0x0E, 0x00, 0x00, 0x00, 0x81, 0xC3, 0x34, 0x00,
+0x10, 0x34, 0xC3, 0x80, 0x00, 0x00, 0x0E, 0x7F, 0x80, 0x84, 0x86, 0x86, 0x84, 0xFC, 0x30, 0x00,
+0x00, 0x30, 0x38, 0x32, 0x31, 0x30, 0x30, 0xFF, 0xFF, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0E, 0x3F,
+0x40, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00,
+0x80, 0x83, 0x82, 0x86, 0x84, 0x84, 0x84, 0xF8, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x18, 0x18, 0x08, 0x0F, 0x01, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+
+static unsigned char font[]= {
+    0x00, 0x00, 0x00, 0x00, 0x00,
+    0x3E, 0x5B, 0x4F, 0x5B, 0x3E,
+    0x3E, 0x6B, 0x4F, 0x6B, 0x3E,
+    0x1C, 0x3E, 0x7C, 0x3E, 0x1C,
+    0x18, 0x3C, 0x7E, 0x3C, 0x18,
+    0x1C, 0x57, 0x7D, 0x57, 0x1C,
+    0x1C, 0x5E, 0x7F, 0x5E, 0x1C,
+    0x00, 0x18, 0x3C, 0x18, 0x00,
+    0xFF, 0xE7, 0xC3, 0xE7, 0xFF,
+    0x00, 0x18, 0x24, 0x18, 0x00,
+    0xFF, 0xE7, 0xDB, 0xE7, 0xFF,
+    0x30, 0x48, 0x3A, 0x06, 0x0E,
+    0x26, 0x29, 0x79, 0x29, 0x26,
+    0x40, 0x7F, 0x05, 0x05, 0x07,
+    0x40, 0x7F, 0x05, 0x25, 0x3F,
+    0x5A, 0x3C, 0xE7, 0x3C, 0x5A,
+    0x7F, 0x3E, 0x1C, 0x1C, 0x08,
+    0x08, 0x1C, 0x1C, 0x3E, 0x7F,
+    0x14, 0x22, 0x7F, 0x22, 0x14,
+    0x5F, 0x5F, 0x00, 0x5F, 0x5F,
+    0x06, 0x09, 0x7F, 0x01, 0x7F,
+    0x00, 0x66, 0x89, 0x95, 0x6A,
+    0x60, 0x60, 0x60, 0x60, 0x60,
+    0x94, 0xA2, 0xFF, 0xA2, 0x94,
+    0x08, 0x04, 0x7E, 0x04, 0x08,
+    0x10, 0x20, 0x7E, 0x20, 0x10,
+    0x08, 0x08, 0x2A, 0x1C, 0x08,
+    0x08, 0x1C, 0x2A, 0x08, 0x08,
+    0x1E, 0x10, 0x10, 0x10, 0x10,
+    0x0C, 0x1E, 0x0C, 0x1E, 0x0C,
+    0x30, 0x38, 0x3E, 0x38, 0x30,
+    0x06, 0x0E, 0x3E, 0x0E, 0x06,
+    0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x5F, 0x00, 0x00,
+    0x00, 0x07, 0x00, 0x07, 0x00,
+    0x14, 0x7F, 0x14, 0x7F, 0x14,
+    0x24, 0x2A, 0x7F, 0x2A, 0x12,
+    0x23, 0x13, 0x08, 0x64, 0x62,
+    0x36, 0x49, 0x56, 0x20, 0x50,
+    0x00, 0x08, 0x07, 0x03, 0x00,
+    0x00, 0x1C, 0x22, 0x41, 0x00,
+    0x00, 0x41, 0x22, 0x1C, 0x00,
+    0x2A, 0x1C, 0x7F, 0x1C, 0x2A,
+    0x08, 0x08, 0x3E, 0x08, 0x08,
+    0x00, 0x80, 0x70, 0x30, 0x00,
+    0x08, 0x08, 0x08, 0x08, 0x08,
+    0x00, 0x00, 0x60, 0x60, 0x00,
+    0x20, 0x10, 0x08, 0x04, 0x02,
+    0x3E, 0x51, 0x49, 0x45, 0x3E,
+    0x00, 0x42, 0x7F, 0x40, 0x00,
+    0x72, 0x49, 0x49, 0x49, 0x46,
+    0x21, 0x41, 0x49, 0x4D, 0x33,
+    0x18, 0x14, 0x12, 0x7F, 0x10,
+    0x27, 0x45, 0x45, 0x45, 0x39,
+    0x3C, 0x4A, 0x49, 0x49, 0x31,
+    0x41, 0x21, 0x11, 0x09, 0x07,
+    0x36, 0x49, 0x49, 0x49, 0x36,
+    0x46, 0x49, 0x49, 0x29, 0x1E,
+    0x00, 0x00, 0x14, 0x00, 0x00,
+    0x00, 0x40, 0x34, 0x00, 0x00,
+    0x00, 0x08, 0x14, 0x22, 0x41,
+    0x14, 0x14, 0x14, 0x14, 0x14,
+    0x00, 0x41, 0x22, 0x14, 0x08,
+    0x02, 0x01, 0x59, 0x09, 0x06,
+    0x3E, 0x41, 0x5D, 0x59, 0x4E,
+    0x7C, 0x12, 0x11, 0x12, 0x7C,
+    0x7F, 0x49, 0x49, 0x49, 0x36,
+    0x3E, 0x41, 0x41, 0x41, 0x22,
+    0x7F, 0x41, 0x41, 0x41, 0x3E,
+    0x7F, 0x49, 0x49, 0x49, 0x41,
+    0x7F, 0x09, 0x09, 0x09, 0x01,
+    0x3E, 0x41, 0x41, 0x51, 0x73,
+    0x7F, 0x08, 0x08, 0x08, 0x7F,
+    0x00, 0x41, 0x7F, 0x41, 0x00,
+    0x20, 0x40, 0x41, 0x3F, 0x01,
+    0x7F, 0x08, 0x14, 0x22, 0x41,
+    0x7F, 0x40, 0x40, 0x40, 0x40,
+    0x7F, 0x02, 0x1C, 0x02, 0x7F,
+    0x7F, 0x04, 0x08, 0x10, 0x7F,
+    0x3E, 0x41, 0x41, 0x41, 0x3E,
+    0x7F, 0x09, 0x09, 0x09, 0x06,
+    0x3E, 0x41, 0x51, 0x21, 0x5E,
+    0x7F, 0x09, 0x19, 0x29, 0x46,
+    0x26, 0x49, 0x49, 0x49, 0x32,
+    0x03, 0x01, 0x7F, 0x01, 0x03,
+    0x3F, 0x40, 0x40, 0x40, 0x3F,
+    0x1F, 0x20, 0x40, 0x20, 0x1F,
+    0x3F, 0x40, 0x38, 0x40, 0x3F,
+    0x63, 0x14, 0x08, 0x14, 0x63,
+    0x03, 0x04, 0x78, 0x04, 0x03,
+    0x61, 0x59, 0x49, 0x4D, 0x43,
+    0x00, 0x7F, 0x41, 0x41, 0x41,
+    0x02, 0x04, 0x08, 0x10, 0x20,
+    0x00, 0x41, 0x41, 0x41, 0x7F,
+    0x04, 0x02, 0x01, 0x02, 0x04,
+    0x40, 0x40, 0x40, 0x40, 0x40,
+    0x00, 0x03, 0x07, 0x08, 0x00,
+    0x20, 0x54, 0x54, 0x78, 0x40,
+    0x7F, 0x28, 0x44, 0x44, 0x38,
+    0x38, 0x44, 0x44, 0x44, 0x28,
+    0x38, 0x44, 0x44, 0x28, 0x7F,
+    0x38, 0x54, 0x54, 0x54, 0x18,
+    0x00, 0x08, 0x7E, 0x09, 0x02,
+    0x18, 0xA4, 0xA4, 0x9C, 0x78,
+    0x7F, 0x08, 0x04, 0x04, 0x78,
+    0x00, 0x44, 0x7D, 0x40, 0x00,
+    0x20, 0x40, 0x40, 0x3D, 0x00,
+    0x7F, 0x10, 0x28, 0x44, 0x00,
+    0x00, 0x41, 0x7F, 0x40, 0x00,
+    0x7C, 0x04, 0x78, 0x04, 0x78,
+    0x7C, 0x08, 0x04, 0x04, 0x78,
+    0x38, 0x44, 0x44, 0x44, 0x38,
+    0xFC, 0x18, 0x24, 0x24, 0x18,
+    0x18, 0x24, 0x24, 0x18, 0xFC,
+    0x7C, 0x08, 0x04, 0x04, 0x08,
+    0x48, 0x54, 0x54, 0x54, 0x24,
+    0x04, 0x04, 0x3F, 0x44, 0x24,
+    0x3C, 0x40, 0x40, 0x20, 0x7C,
+    0x1C, 0x20, 0x40, 0x20, 0x1C,
+    0x3C, 0x40, 0x30, 0x40, 0x3C,
+    0x44, 0x28, 0x10, 0x28, 0x44,
+    0x4C, 0x90, 0x90, 0x90, 0x7C,
+    0x44, 0x64, 0x54, 0x4C, 0x44,
+    0x00, 0x08, 0x36, 0x41, 0x00,
+    0x00, 0x00, 0x77, 0x00, 0x00,
+    0x00, 0x41, 0x36, 0x08, 0x00,
+    0x02, 0x01, 0x02, 0x04, 0x02,
+    0x3C, 0x26, 0x23, 0x26, 0x3C,
+    0x1E, 0xA1, 0xA1, 0x61, 0x12,
+    0x3A, 0x40, 0x40, 0x20, 0x7A,
+    0x38, 0x54, 0x54, 0x55, 0x59,
+    0x21, 0x55, 0x55, 0x79, 0x41,
+    0x21, 0x54, 0x54, 0x78, 0x41,
+    0x21, 0x55, 0x54, 0x78, 0x40,
+    0x20, 0x54, 0x55, 0x79, 0x40,
+    0x0C, 0x1E, 0x52, 0x72, 0x12,
+    0x39, 0x55, 0x55, 0x55, 0x59,
+    0x39, 0x54, 0x54, 0x54, 0x59,
+    0x39, 0x55, 0x54, 0x54, 0x58,
+    0x00, 0x00, 0x45, 0x7C, 0x41,
+    0x00, 0x02, 0x45, 0x7D, 0x42,
+    0x00, 0x01, 0x45, 0x7C, 0x40,
+    0xF0, 0x29, 0x24, 0x29, 0xF0,
+    0xF0, 0x28, 0x25, 0x28, 0xF0,
+    0x7C, 0x54, 0x55, 0x45, 0x00,
+    0x20, 0x54, 0x54, 0x7C, 0x54,
+    0x7C, 0x0A, 0x09, 0x7F, 0x49,
+    0x32, 0x49, 0x49, 0x49, 0x32,
+    0x32, 0x48, 0x48, 0x48, 0x32,
+    0x32, 0x4A, 0x48, 0x48, 0x30,
+    0x3A, 0x41, 0x41, 0x21, 0x7A,
+    0x3A, 0x42, 0x40, 0x20, 0x78,
+    0x00, 0x9D, 0xA0, 0xA0, 0x7D,
+    0x39, 0x44, 0x44, 0x44, 0x39,
+    0x3D, 0x40, 0x40, 0x40, 0x3D,
+    0x3C, 0x24, 0xFF, 0x24, 0x24,
+    0x48, 0x7E, 0x49, 0x43, 0x66,
+    0x2B, 0x2F, 0xFC, 0x2F, 0x2B,
+    0xFF, 0x09, 0x29, 0xF6, 0x20,
+    0xC0, 0x88, 0x7E, 0x09, 0x03,
+    0x20, 0x54, 0x54, 0x79, 0x41,
+    0x00, 0x00, 0x44, 0x7D, 0x41,
+    0x30, 0x48, 0x48, 0x4A, 0x32,
+    0x38, 0x40, 0x40, 0x22, 0x7A,
+    0x00, 0x7A, 0x0A, 0x0A, 0x72,
+    0x7D, 0x0D, 0x19, 0x31, 0x7D,
+    0x26, 0x29, 0x29, 0x2F, 0x28,
+    0x26, 0x29, 0x29, 0x29, 0x26,
+    0x30, 0x48, 0x4D, 0x40, 0x20,
+    0x38, 0x08, 0x08, 0x08, 0x08,
+    0x08, 0x08, 0x08, 0x08, 0x38,
+    0x2F, 0x10, 0xC8, 0xAC, 0xBA,
+    0x2F, 0x10, 0x28, 0x34, 0xFA,
+    0x00, 0x00, 0x7B, 0x00, 0x00,
+    0x08, 0x14, 0x2A, 0x14, 0x22,
+    0x22, 0x14, 0x2A, 0x14, 0x08,
+    0xAA, 0x00, 0x55, 0x00, 0xAA,
+    0xAA, 0x55, 0xAA, 0x55, 0xAA,
+    0x00, 0x00, 0x00, 0xFF, 0x00,
+    0x10, 0x10, 0x10, 0xFF, 0x00,
+    0x14, 0x14, 0x14, 0xFF, 0x00,
+    0x10, 0x10, 0xFF, 0x00, 0xFF,
+    0x10, 0x10, 0xF0, 0x10, 0xF0,
+    0x14, 0x14, 0x14, 0xFC, 0x00,
+    0x14, 0x14, 0xF7, 0x00, 0xFF,
+    0x00, 0x00, 0xFF, 0x00, 0xFF,
+    0x14, 0x14, 0xF4, 0x04, 0xFC,
+    0x14, 0x14, 0x17, 0x10, 0x1F,
+    0x10, 0x10, 0x1F, 0x10, 0x1F,
+    0x14, 0x14, 0x14, 0x1F, 0x00,
+    0x10, 0x10, 0x10, 0xF0, 0x00,
+    0x00, 0x00, 0x00, 0x1F, 0x10,
+    0x10, 0x10, 0x10, 0x1F, 0x10,
+    0x10, 0x10, 0x10, 0xF0, 0x10,
+    0x00, 0x00, 0x00, 0xFF, 0x10,
+    0x10, 0x10, 0x10, 0x10, 0x10,
+    0x10, 0x10, 0x10, 0xFF, 0x10,
+    0x00, 0x00, 0x00, 0xFF, 0x14,
+    0x00, 0x00, 0xFF, 0x00, 0xFF,
+    0x00, 0x00, 0x1F, 0x10, 0x17,
+    0x00, 0x00, 0xFC, 0x04, 0xF4,
+    0x14, 0x14, 0x17, 0x10, 0x17,
+    0x14, 0x14, 0xF4, 0x04, 0xF4,
+    0x00, 0x00, 0xFF, 0x00, 0xF7,
+    0x14, 0x14, 0x14, 0x14, 0x14,
+    0x14, 0x14, 0xF7, 0x00, 0xF7,
+    0x14, 0x14, 0x14, 0x17, 0x14,
+    0x10, 0x10, 0x1F, 0x10, 0x1F,
+    0x14, 0x14, 0x14, 0xF4, 0x14,
+    0x10, 0x10, 0xF0, 0x10, 0xF0,
+    0x00, 0x00, 0x1F, 0x10, 0x1F,
+    0x00, 0x00, 0x00, 0x1F, 0x14,
+    0x00, 0x00, 0x00, 0xFC, 0x14,
+    0x00, 0x00, 0xF0, 0x10, 0xF0,
+    0x10, 0x10, 0xFF, 0x10, 0xFF,
+    0x14, 0x14, 0x14, 0xFF, 0x14,
+    0x10, 0x10, 0x10, 0x1F, 0x00,
+    0x00, 0x00, 0x00, 0xF0, 0x10,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
+    0xFF, 0xFF, 0xFF, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xFF, 0xFF,
+    0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
+    0x38, 0x44, 0x44, 0x38, 0x44,
+    0x7C, 0x2A, 0x2A, 0x3E, 0x14,
+    0x7E, 0x02, 0x02, 0x06, 0x06,
+    0x02, 0x7E, 0x02, 0x7E, 0x02,
+    0x63, 0x55, 0x49, 0x41, 0x63,
+    0x38, 0x44, 0x44, 0x3C, 0x04,
+    0x40, 0x7E, 0x20, 0x1E, 0x20,
+    0x06, 0x02, 0x7E, 0x02, 0x02,
+    0x99, 0xA5, 0xE7, 0xA5, 0x99,
+    0x1C, 0x2A, 0x49, 0x2A, 0x1C,
+    0x4C, 0x72, 0x01, 0x72, 0x4C,
+    0x30, 0x4A, 0x4D, 0x4D, 0x30,
+    0x30, 0x48, 0x78, 0x48, 0x30,
+    0xBC, 0x62, 0x5A, 0x46, 0x3D,
+    0x3E, 0x49, 0x49, 0x49, 0x00,
+    0x7E, 0x01, 0x01, 0x01, 0x7E,
+    0x2A, 0x2A, 0x2A, 0x2A, 0x2A,
+    0x44, 0x44, 0x5F, 0x44, 0x44,
+    0x40, 0x51, 0x4A, 0x44, 0x40,
+    0x40, 0x44, 0x4A, 0x51, 0x40,
+    0x00, 0x00, 0xFF, 0x01, 0x03,
+    0xE0, 0x80, 0xFF, 0x00, 0x00,
+    0x08, 0x08, 0x6B, 0x6B, 0x08,
+    0x36, 0x12, 0x36, 0x24, 0x36,
+    0x06, 0x0F, 0x09, 0x0F, 0x06,
+    0x00, 0x00, 0x18, 0x18, 0x00,
+    0x00, 0x00, 0x10, 0x10, 0x00,
+    0x30, 0x40, 0xFF, 0x01, 0x01,
+    0x00, 0x1F, 0x01, 0x01, 0x1E,
+    0x00, 0x19, 0x1D, 0x17, 0x12,
+    0x00, 0x3C, 0x3C, 0x3C, 0x3C,
+    0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+
+SPKDisplay::SPKDisplay(PinName mosiPin, PinName clkPin, PinName csPin, PinName dcPin, PinName resPin, Serial *debugSerial)
+{
+    bufferHasChanged = false;
+
+    fontStartCharacter = NULL;
+    fontEndCharacter = NULL;
+    fontCharacters = NULL;
+
+    spi = new SPI(mosiPin, NC, clkPin);
+    spi->format(8,3);
+    // changed to 9600 to test
+    spi->frequency(1000000);
+
+    cs = new DigitalOut(csPin);
+    dc = new DigitalOut(dcPin);
+    res = new DigitalOut(resPin);
+
+    // Link up debug Serial object
+    // Passing in shared object as debugging is shared between all DVI mixer functions
+    debug = debugSerial;
+
+    setup();
+
+    clearBuffer();
+
+    if (debug) debug->printf("SPKDisplay loaded\n\r");
+}
+
+// set display for black on white
+void SPKDisplay::inverse()
+{
+    *dc=0;
+    *cs=0;
+    spi->write(0xA7);
+    *dc=1;
+    *cs=1;
+}
+
+//set display for white on black (normal state after reset)
+void SPKDisplay::normal()
+{
+    *dc=0;
+    *cs=0;
+    spi->write(0xA6);
+    *dc=1;
+    *cs=1;
+}
+
+void SPKDisplay::displayPower(int P)
+{
+    *dc=0;
+    *cs=0;
+    if(P==0) spi->write(0xAE);
+    else spi->write(0xAF);
+    *dc=1;
+    *cs=1;
+
+}
+
+
+void SPKDisplay::clearBuffer()
+{
+    memset(buffer, 0, bufferCount);
+    bufferHasChanged = true;
+}
+
+void SPKDisplay::imageToBuffer(const uint8_t* image)
+{
+    memcpy(buffer, image, bufferCount);
+    bufferHasChanged = true;
+}
+
+void SPKDisplay::clearBufferRow(int row)
+{
+    // Range check
+    if (row >= 8) {
+        if (debug) debug->printf("SPKDisplay::clearBufferRow sent out of bounds row");
+        return;
+    }
+    int bStart = row*bufferWidth;
+    int bEnd = bStart + pixelWidth;
+
+    for (int bPos = bStart; bPos <= bEnd; bPos++) {
+        buffer[bPos] = 0x00;
+    }
+
+    bufferHasChanged = true;
+}
+
+void SPKDisplay::horizLineToBuffer(int y)
+{
+    if (y >= pixelHeight) {
+        if (debug) debug->printf("SPKDisplay::clearBufferRow sent out of bounds y");
+        return;
+    }
+
+    int row = (y*pixInPage) / pixelHeight;
+    int posInRow = y % pixInPage;
+
+    int bStart = row*bufferWidth;
+    int bEnd = bStart + pixelWidth;
+
+    for (int bPos = bStart; bPos <= bEnd; bPos++) {
+        // Need to bitwise OR as setting single bit (the line) in byte (the row)
+        buffer[bPos] = buffer[bPos] | 0x01 << posInRow;
+    }
+
+    bufferHasChanged = true;
+}
+
+
+void SPKDisplay::textToBuffer(char *message, int row)
+{
+   char character;
+    // Range check
+    if (row >= 8) row = 7;
+    int bStart = row*bufferWidth;
+    int bEnd = bStart + pixelWidth;
+ 
+    int bPos = bStart;
+    for (int i = 0; i < 21; i++)
+    {
+       character=message[i];
+         
+            // Shift into our array's indexing
+      //      character -= *fontStartCharacter;
+            
+            // Write each byte's vertical column of 8bits into the buffer.
+            for (int j = 0; j < 5;j++)
+            {
+                if (bPos >= bEnd) break;
+                buffer[bPos++] = font[character*5+j];
+            }
+            
+            // Put 1px letter spacing at end
+            if (bPos >= bEnd) break;
+            buffer[bPos++] = 0x00; // 1 px letter spacing
+        
+    }
+    
+    bufferHasChanged = true;
+}
+
+
+// rewritten to cope with the paging
+void SPKDisplay::sendBuffer()
+{
+    if (bufferHasChanged) {
+        // Select the device by seting chip select low
+        *cs = 0; // select chip
+        *dc = 0; // comand mode
+
+
+        unsigned char i=0,j=0;
+        for(i=0; i<8; i++) {
+            *dc=0; // command mode
+            spi->write(0xB0+i); //Set display position - paged display
+            spi->write(0x00); //Set display position - low column address
+            spi->write(0x10);//Set the display position - high column address
+
+            *dc=1; // data mode
+            for(j=0; j<128; j++) {
+                spi->write(buffer[i*128+j]); //copy buffer into ram
+
+            }
+
+        }
+
+        *cs = 1;
+
+        bufferHasChanged = false;
+    }
+}
+
+// display a welcome message encoded in tab0 in  spk_ole_ssd1305.h
+void SPKDisplay::welcome()
+{
+// Select the device by seting chip select low
+    *cs = 0; // select chip
+    *dc = 0; // comand mode
+
+
+    unsigned char i=0,j=0;
+    for(i=0; i<8; i++) {
+        *dc=0; // command mode
+        spi->write(0xB0+i); //Set display position - paged display
+        spi->write(0x00); //Set display position - low column address
+        spi->write(0x10);//Set the display position - high column address
+
+        *dc=1; // data mode
+        for(j=0; j<128; j++) {
+            // spi->write(tab0[i*128+j]); //copy buffer into ram
+            spi->write(logo_bits[i*128+j]); //copy buffer into ram
+        }
+
+    }
+
+    *cs = 1;
+
+}
+
+
+
+//================
+// display a welcome message encoded in tab0 in  spk_ole_ssd1305.h
+void SPKDisplay::fontdemo()
+{
+// Select the device by seting chip select low
+    *cs = 0; // select chip
+    *dc = 0; // comand mode
+
+
+    unsigned char i=0,j=0;
+    for(i=0; i<8; i++) {
+        *dc=0; // command mode
+        spi->write(0xB0+i); //Set display position - paged display
+        spi->write(0x00); //Set display position - low column address
+        spi->write(0x10);//Set the display position - high column address
+
+        *dc=1; // data mode
+        for(j=0; j<128; j++) {
+            // spi->write(tab0[i*128+j]); //copy buffer into ram
+            spi->write(font[i*128+j]); //copy buffer into ram
+        }
+
+    }
+
+    *cs = 1;
+
+}
+//=================
+
+void SPKDisplay::setup()
+{
+    // TASK: SCREEN OFF, Run pre-flight
+
+    // Hard reset the OLED
+    *res=1;
+    wait_ms(1);
+    *res = 0;
+    wait_ms(1);
+    *res = 1;
+
+    // Select the device by seting chip select low
+    *cs = 0;
+
+    // Set to receive COMMANDS not data
+    *dc = 0;
+//=======ALL THESE TAKEN FROM THE UNIVISION DATASHEET UNCHANGED==========
+
+    spi->write(0x20); // set addressing mode
+    spi->write(0x10); // paged adressign mode
+
+    spi->write(0x00); // set lower nyble column address
+    spi->write(0x10); // set higher column adress
+    spi->write(0x40);  //set display start line to 0
+    spi->write(0x81); // set contrast control register
+    spi->write(0xFF); // set contrast to maximum
+
+    spi->write(0xA0); // [A0]:column address 0 is map to SEG0 ,
+    //[A1]: columnaddress 131 is map to SEG0*/
+
+    spi->write(0xA4); // entire display ON - means that dispaly constaly matched to RAM content
+
+    spi->write(0xA6); //normal display - white on black
+
+    spi->write(0xA8); // set MUX ratio command
+    spi->write(0x3F); // MUX set to 36
+
+    spi->write(0x8D); //set DC-DC
+    spi->write(0x14);   // 0x14=ON
+
+    spi->write(0xAE); // set display off - sleep mode
+
+    spi->write(0xD3); // set display offset
+    spi->write(0x00); // to no offset
+
+    spi->write(0xD5); //set clock divide
+    spi->write(0x20); // to get clock at 80Hz
+
+//spi->write(0xD8); // set area color
+//spi->write(0x00);
+
+    spi->write(0xDA); // set pins configuration
+    spi->write(0x12); // com left - right remap , alternaitve com config - realtes to hardware settings on board
+
+    spi->write(0xDB); // set VCOMHH level
+    spi->write(0x00); // to 0.65*Vcc
+
+    spi->write(0xD9); // set pre charge period
+    spi->write(0x22); // P1=2, P2=2
+
+    spi->write(0xC0); // set COM ouptut scan normal
+
+//INI_DIS - initialise the display as per manufacturers example prog
+
+    unsigned char i=0,j=0;
+    for(i=0; i<8; i++) {
+        *dc=0; // command mode
+        spi->write(0xB0+i); //Set display position - paged display
+        spi->write(0x02); //Set display position - low column address
+        spi->write(0x10);//Set the display position - high column address
+
+        *dc=1; // set to receive data no commands
+
+        for(j=0; j<128; j++) {
+            spi->write(0x00); //Screen display initial setting
+
+        }
+        *dc=0;
+        spi->write(0xaf); // screen on
+    }
+
+
+
+}
\ No newline at end of file