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_fontByteMaker--processing.h@1:dd3faa2ab1dd, 2012-04-15 (annotated)
- Committer:
- tobyspark
- Date:
- Sun Apr 15 19:39:17 2012 +0000
- Revision:
- 1:dd3faa2ab1dd
- Parent:
- 0:76bb084fa033
- Child:
- 2:8187d69071f8
Image and font are fully external to class, ie. it will compile for others!
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
tobyspark | 1:dd3faa2ab1dd | 1 | int w = 132; |
tobyspark | 1:dd3faa2ab1dd | 2 | int h = 64; |
tobyspark | 1:dd3faa2ab1dd | 3 | int scaleFactor = 5; |
tobyspark | 1:dd3faa2ab1dd | 4 | |
tobyspark | 1:dd3faa2ab1dd | 5 | PImage imgPixel; |
tobyspark | 1:dd3faa2ab1dd | 6 | color white = color(255, 255, 255, 255); |
tobyspark | 1:dd3faa2ab1dd | 7 | color black = color(0, 0, 0, 255); |
tobyspark | 1:dd3faa2ab1dd | 8 | |
tobyspark | 1:dd3faa2ab1dd | 9 | void setup() |
tobyspark | 1:dd3faa2ab1dd | 10 | { |
tobyspark | 1:dd3faa2ab1dd | 11 | imgPixel = loadImage("spk_dvimxr_font.png"); |
tobyspark | 1:dd3faa2ab1dd | 12 | w = imgPixel.width; |
tobyspark | 1:dd3faa2ab1dd | 13 | h = imgPixel.height; |
tobyspark | 1:dd3faa2ab1dd | 14 | |
tobyspark | 1:dd3faa2ab1dd | 15 | size(w*scaleFactor, h*scaleFactor); |
tobyspark | 1:dd3faa2ab1dd | 16 | |
tobyspark | 1:dd3faa2ab1dd | 17 | noSmooth(); |
tobyspark | 1:dd3faa2ab1dd | 18 | } |
tobyspark | 1:dd3faa2ab1dd | 19 | |
tobyspark | 1:dd3faa2ab1dd | 20 | void draw() |
tobyspark | 1:dd3faa2ab1dd | 21 | { |
tobyspark | 1:dd3faa2ab1dd | 22 | background(0); |
tobyspark | 1:dd3faa2ab1dd | 23 | image(imgPixel, 0, 0, w*scaleFactor, h*scaleFactor); |
tobyspark | 1:dd3faa2ab1dd | 24 | } |
tobyspark | 1:dd3faa2ab1dd | 25 | |
tobyspark | 1:dd3faa2ab1dd | 26 | void mouseDragged() |
tobyspark | 1:dd3faa2ab1dd | 27 | { |
tobyspark | 1:dd3faa2ab1dd | 28 | int x = mouseX/scaleFactor; |
tobyspark | 1:dd3faa2ab1dd | 29 | int y = mouseY/scaleFactor; |
tobyspark | 1:dd3faa2ab1dd | 30 | |
tobyspark | 1:dd3faa2ab1dd | 31 | imgPixel.set(x, y, white); |
tobyspark | 1:dd3faa2ab1dd | 32 | } |
tobyspark | 1:dd3faa2ab1dd | 33 | |
tobyspark | 1:dd3faa2ab1dd | 34 | void mousePressed() |
tobyspark | 1:dd3faa2ab1dd | 35 | { |
tobyspark | 1:dd3faa2ab1dd | 36 | int x = mouseX/scaleFactor; |
tobyspark | 1:dd3faa2ab1dd | 37 | int y = mouseY/scaleFactor; |
tobyspark | 1:dd3faa2ab1dd | 38 | |
tobyspark | 1:dd3faa2ab1dd | 39 | if (imgPixel.get(x, y) == white) |
tobyspark | 1:dd3faa2ab1dd | 40 | { |
tobyspark | 1:dd3faa2ab1dd | 41 | imgPixel.set(x, y, black); |
tobyspark | 1:dd3faa2ab1dd | 42 | } |
tobyspark | 1:dd3faa2ab1dd | 43 | else |
tobyspark | 1:dd3faa2ab1dd | 44 | { |
tobyspark | 1:dd3faa2ab1dd | 45 | imgPixel.set(x, y, white); |
tobyspark | 1:dd3faa2ab1dd | 46 | } |
tobyspark | 1:dd3faa2ab1dd | 47 | } |
tobyspark | 1:dd3faa2ab1dd | 48 | |
tobyspark | 1:dd3faa2ab1dd | 49 | void keyPressed() |
tobyspark | 1:dd3faa2ab1dd | 50 | { |
tobyspark | 1:dd3faa2ab1dd | 51 | int startID = 33; |
tobyspark | 1:dd3faa2ab1dd | 52 | int stopID = 126; |
tobyspark | 1:dd3faa2ab1dd | 53 | |
tobyspark | 1:dd3faa2ab1dd | 54 | for (int charID = startID; charID <= stopID; charID++) |
tobyspark | 1:dd3faa2ab1dd | 55 | { |
tobyspark | 1:dd3faa2ab1dd | 56 | boolean blank = false; |
tobyspark | 1:dd3faa2ab1dd | 57 | String output = ""; |
tobyspark | 1:dd3faa2ab1dd | 58 | int counter = 0; |
tobyspark | 1:dd3faa2ab1dd | 59 | while (blank == false) |
tobyspark | 1:dd3faa2ab1dd | 60 | { |
tobyspark | 1:dd3faa2ab1dd | 61 | int x = (charID-startID)*8 + counter; |
tobyspark | 1:dd3faa2ab1dd | 62 | |
tobyspark | 1:dd3faa2ab1dd | 63 | byte theByte = 0; |
tobyspark | 1:dd3faa2ab1dd | 64 | for (int b = 0; b < 8; b++) |
tobyspark | 1:dd3faa2ab1dd | 65 | { |
tobyspark | 1:dd3faa2ab1dd | 66 | if (imgPixel.get(x, b) == white) |
tobyspark | 1:dd3faa2ab1dd | 67 | { |
tobyspark | 1:dd3faa2ab1dd | 68 | theByte += pow(2, b); |
tobyspark | 1:dd3faa2ab1dd | 69 | } |
tobyspark | 1:dd3faa2ab1dd | 70 | } |
tobyspark | 1:dd3faa2ab1dd | 71 | |
tobyspark | 1:dd3faa2ab1dd | 72 | if (theByte > 0) |
tobyspark | 1:dd3faa2ab1dd | 73 | { |
tobyspark | 1:dd3faa2ab1dd | 74 | if (output.length() > 0) output = output + ", "; |
tobyspark | 1:dd3faa2ab1dd | 75 | output = output + "0x" + hex(theByte, 2); |
tobyspark | 1:dd3faa2ab1dd | 76 | } |
tobyspark | 1:dd3faa2ab1dd | 77 | else |
tobyspark | 1:dd3faa2ab1dd | 78 | { |
tobyspark | 1:dd3faa2ab1dd | 79 | blank = true; |
tobyspark | 1:dd3faa2ab1dd | 80 | println("const uint8_t char" + charID + "[] = {" + counter + ", " + output + "};"); |
tobyspark | 1:dd3faa2ab1dd | 81 | } |
tobyspark | 1:dd3faa2ab1dd | 82 | |
tobyspark | 1:dd3faa2ab1dd | 83 | counter++; |
tobyspark | 1:dd3faa2ab1dd | 84 | } |
tobyspark | 1:dd3faa2ab1dd | 85 | } |
tobyspark | 1:dd3faa2ab1dd | 86 | println(); |
tobyspark | 1:dd3faa2ab1dd | 87 | println("const int characterBytesStartChar = " + startID + ";"); |
tobyspark | 1:dd3faa2ab1dd | 88 | println("const int characterBytesEndChar = " + stopID + ";"); |
tobyspark | 1:dd3faa2ab1dd | 89 | print("const uint8_t* characterBytes[] = {"); |
tobyspark | 1:dd3faa2ab1dd | 90 | for (int charID = startID; charID <= stopID; charID++) |
tobyspark | 1:dd3faa2ab1dd | 91 | { |
tobyspark | 1:dd3faa2ab1dd | 92 | print("char" + charID + ", "); |
tobyspark | 1:dd3faa2ab1dd | 93 | } |
tobyspark | 1:dd3faa2ab1dd | 94 | println("};"); |
tobyspark | 1:dd3faa2ab1dd | 95 | } |