SSD1306 using I2C

[myvikes]

I found SSD1306Test but it seems to be only and example using SPI. I'd like to use a SSD1306 display using I2C.

I see a constructor "public SSD1306(SsdOledCommunicationChannel commChannel, Height height) {" but can't figure out the two values to instantiate the object.

Any assistance would be appreciated.

java -cp /home/diozeroProjects/diozero-learn-0.0.1-SNAPSHOT-jar-with-dependencies.jar org.wg.apps.I2CDetect 1
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-1.
I will probe address range 0x03-0x77.
Continue? [Y/n] Y
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

Closer:

java -cp /home/diozeroProjects/diozero-learn-0.0.1-SNAPSHOT-jar-with-dependencies.jar org.wg.apps.SSD1306Test
20:10:53.380 [main] INFO org.wg.apps.SSD1306Test.main - Sierpinski triangle
20:11:00.332 [main] INFO orgwg.apps.SSD1306Test.main - Displaying custom image
20:11:11.774 [main] INFO org.wg.apps.SSD1306Test.animateText - Font name=Dialog.plain, family=Dialog, size=12, style=0

But no display...this is working on an ESP32 so i know the SSD1306 display is working.

Thanks!

[EAGrahamJr]

I recently updated this in #192, but the constructor for I2C is

I2CDevice device = new I2CDevice(1, SSD1306.DEFAULT_I2C_ADDRESS);
SsdOledCommunicationChannel channel = new I2cCommunicationChannel(device);
SSD1306 oled = new SSD1306(channel, Height.SHORT);

Height is an enum that just provides a nice syntax to handle the number of lines in the display, since they're pretty standard.

[myvikes]

That appears to have nailed it and it's working!

TYVM!

[mattjlewis]

Brilliant, thanks. FYI I've just updated the SSD1306Test app to use the SsdOledCommunicationChannel interface rather than the deprecated SPI specific constructor.