greeeg 460 Posted November 3, 2011 Share Posted November 3, 2011 Wow that looks really nice. I've played around with those OLEDs before the only issue I had is that you can't read back data when using SPI. Which rules out using a lower cost MSPs (G2231) Thanks. There are two spi modes.. 3 wire and 4 wire. Robg is trying to get 4-wire working in his4ch Voltmeter project. You can read back data in the 4 wire mode. Is there any reason you want to read back data? Correct me if I am mislead, I've only worked with the (older?) SH1101A controllers. However don't you have to write data to the display in banks of 8 pixels at a time? A problem if you want to set or reset individual pixels. The 3 wire SPI mode only appears to place the value of the D/C pin into the MSB of a 9 bit packet. However I just found something promising in the datasheet: " Quote Link to post Share on other sites
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