Hi, I purchased a cheap OLED from China, and have had it working, but don't fully understand how. I have another project I'm working on, and this basic understanding of the OLED I have will help me debug the problems with my project.
I purchased this item http://www.ebay.co.uk/itm/272359426038 it is similar to the picture, expect the layout of resistors on the back. It has 7-pins too, Vcc, GND, D0, D1, DC, CS, RST.
This is the description on the back of the unit:
IIC: R1 R4 R6 R7 R8 4SPI: R3 R4 3SPI: R2 R3 0.96 OLED
Mine has the following resistors present:
R3 R4 R5 R6 R7
I assume therefore that my device is the 4SPI, as it's the only description that covers the resistors that are in place.
Now, when it comes to wiring this device, is it ALWAYS optional to use either hardware or software SPI implementations or not.
Lastly, when it's time to program, I'm using the u8glib library, I'm pretty sure that allows for SW or HW SPI. Ideally I'd want to use HW to save on the pins used.
Thanks, in advance for any help!