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
Fork of spk_oled_ssd1305 by
OLED driver and demo for Univision oled display 128x64.
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.
Here is the output of the demo code.
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
#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); } } }
spk_oled_screenByteMaker--processing.h@2:8187d69071f8, 2012-04-15 (annotated)
- Committer:
- tobyspark
- Date:
- Sun Apr 15 19:48:11 2012 +0000
- Revision:
- 2:8187d69071f8
- Parent:
- 1:dd3faa2ab1dd
- Child:
- 3:ade83210ecf6
Documentation update
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
tobyspark | 2:8187d69071f8 | 1 | // OLED display using SSD1305 driver |
tobyspark | 2:8187d69071f8 | 2 | // Copyright *spark audio-visual 2012 |
tobyspark | 2:8187d69071f8 | 3 | // |
tobyspark | 2:8187d69071f8 | 4 | // This library is free software; you can redistribute it and/or |
tobyspark | 2:8187d69071f8 | 5 | // modify it under the terms of the GNU Lesser General Public |
tobyspark | 2:8187d69071f8 | 6 | // License version 3 as published by the Free Software Foundation. |
tobyspark | 2:8187d69071f8 | 7 | |
tobyspark | 2:8187d69071f8 | 8 | int w = 132; |
tobyspark | 2:8187d69071f8 | 9 | int h = 64; |
tobyspark | 2:8187d69071f8 | 10 | int scaleFactor = 10; |
tobyspark | 2:8187d69071f8 | 11 | |
tobyspark | 2:8187d69071f8 | 12 | PImage imgPixel; |
tobyspark | 2:8187d69071f8 | 13 | color white = color(255, 255, 255, 255); |
tobyspark | 2:8187d69071f8 | 14 | color black = color(0, 0, 0, 255); |
tobyspark | 2:8187d69071f8 | 15 | |
tobyspark | 2:8187d69071f8 | 16 | void setup() |
tobyspark | 2:8187d69071f8 | 17 | { |
tobyspark | 2:8187d69071f8 | 18 | size(w*scaleFactor, h*scaleFactor); |
tobyspark | 2:8187d69071f8 | 19 | imgPixel = loadImage("spk_dvimxr_screen.png"); |
tobyspark | 2:8187d69071f8 | 20 | |
tobyspark | 2:8187d69071f8 | 21 | noSmooth(); |
tobyspark | 2:8187d69071f8 | 22 | } |
tobyspark | 2:8187d69071f8 | 23 | |
tobyspark | 2:8187d69071f8 | 24 | void draw() |
tobyspark | 2:8187d69071f8 | 25 | { |
tobyspark | 2:8187d69071f8 | 26 | background(0); |
tobyspark | 2:8187d69071f8 | 27 | image(imgPixel, 0, 0, w*scaleFactor, h*scaleFactor); |
tobyspark | 2:8187d69071f8 | 28 | } |
tobyspark | 2:8187d69071f8 | 29 | |
tobyspark | 2:8187d69071f8 | 30 | void mouseDragged() |
tobyspark | 2:8187d69071f8 | 31 | { |
tobyspark | 2:8187d69071f8 | 32 | int x = mouseX/scaleFactor; |
tobyspark | 2:8187d69071f8 | 33 | int y = mouseY/scaleFactor; |
tobyspark | 2:8187d69071f8 | 34 | |
tobyspark | 2:8187d69071f8 | 35 | imgPixel.set(x, y, white); |
tobyspark | 2:8187d69071f8 | 36 | } |
tobyspark | 2:8187d69071f8 | 37 | |
tobyspark | 2:8187d69071f8 | 38 | void mousePressed() |
tobyspark | 2:8187d69071f8 | 39 | { |
tobyspark | 2:8187d69071f8 | 40 | int x = mouseX/scaleFactor; |
tobyspark | 2:8187d69071f8 | 41 | int y = mouseY/scaleFactor; |
tobyspark | 2:8187d69071f8 | 42 | |
tobyspark | 2:8187d69071f8 | 43 | if (imgPixel.get(x, y) == white) |
tobyspark | 2:8187d69071f8 | 44 | { |
tobyspark | 2:8187d69071f8 | 45 | imgPixel.set(x, y, black); |
tobyspark | 2:8187d69071f8 | 46 | } |
tobyspark | 2:8187d69071f8 | 47 | else |
tobyspark | 2:8187d69071f8 | 48 | { |
tobyspark | 2:8187d69071f8 | 49 | imgPixel.set(x, y, white); |
tobyspark | 2:8187d69071f8 | 50 | } |
tobyspark | 2:8187d69071f8 | 51 | } |
tobyspark | 2:8187d69071f8 | 52 | |
tobyspark | 2:8187d69071f8 | 53 | void keyPressed() |
tobyspark | 2:8187d69071f8 | 54 | { |
tobyspark | 2:8187d69071f8 | 55 | println("{"); |
tobyspark | 2:8187d69071f8 | 56 | for (int page = 0; page < 8; page++) |
tobyspark | 2:8187d69071f8 | 57 | { |
tobyspark | 2:8187d69071f8 | 58 | for (int i = 0; i < w; i++) |
tobyspark | 2:8187d69071f8 | 59 | { |
tobyspark | 2:8187d69071f8 | 60 | byte theByte = 0; |
tobyspark | 2:8187d69071f8 | 61 | for (int j = 0; j < 8; j++) |
tobyspark | 2:8187d69071f8 | 62 | { |
tobyspark | 2:8187d69071f8 | 63 | if (imgPixel.get(i, (page*8)+j) == white) |
tobyspark | 2:8187d69071f8 | 64 | { |
tobyspark | 2:8187d69071f8 | 65 | theByte += pow(2, j); |
tobyspark | 2:8187d69071f8 | 66 | } |
tobyspark | 2:8187d69071f8 | 67 | } |
tobyspark | 2:8187d69071f8 | 68 | print("0x" + hex(theByte, 2)); |
tobyspark | 2:8187d69071f8 | 69 | print(", "); |
tobyspark | 2:8187d69071f8 | 70 | } |
tobyspark | 2:8187d69071f8 | 71 | println(); |
tobyspark | 2:8187d69071f8 | 72 | } |
tobyspark | 2:8187d69071f8 | 73 | println("}"); |
tobyspark | 2:8187d69071f8 | 74 | } |