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SSD1306 driver for use with less RAM
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paulie2907



Joined: 25 Jun 2020
Posts: 5

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PostPosted: Mon Mar 20, 2023 8:05 am     Reply with quote

Hello,

Driver
https://www.buydisplay.com/download/ic/SSD1305.pdf

Datasheet (with initialization procedure)
https://www.buydisplay.com/download/manual/ER-OLED022-1_Series_Datasheet.pdf

Current display
https://www.buydisplay.com/green-2-2-inch-oled-128x32-spi-display-module-serial-i2c-ssd1305

Thanks for helping me.
Ttelmah



Joined: 11 Mar 2010
Posts: 19137

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PostPosted: Tue Mar 21, 2023 1:55 am     Reply with quote

OK.
Key is that the 1305, is compatible with the 1309, not the 1306. The big
difference is the charge pump. It doesn't have this. If you send the charge
pump commands to a 1309, it flips part of the display.
This sounds like the problem you are seeing.
Try removing the S_CHARGEPUMP entry from the init_sequence. Take
the whole line out. The code will send one less byte for the init.
The rest of the commands look compatible. Not sure whether you will
need the SH1106 setting. It looks as if you will (it is a 132*64 driver, not
a 128*64 driver).
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