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SPI - 4 lines / 3 lines #5

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Clementk304 opened this issue Mar 13, 2023 · 1 comment
Open

SPI - 4 lines / 3 lines #5

Clementk304 opened this issue Mar 13, 2023 · 1 comment

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@Clementk304
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Clementk304 commented Mar 13, 2023 •
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Hi everyone, I need more details on the configuration of the SPI, it is specified in the doc that the screen is by default 4 lines SPI but the connector don't have a MISO pin (I believe the SDA is the MOSI) so how is it possible to wire 4 lines SPI here ?

when I look at the back of my screen I can see 4 lines SPI being wired with a resistor but not the 3 lines one and there are no information about how to switch to 3 lines mode. So does anyone knows if I should just wire the 3 lines one or if I need to also removed the resistor from the 4 lines one ?
@WeActStudio
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You can see ssd1680.pdf,The 3-wire SPI eliminates the DC signal,and the MCU SPI needs to support 9bit mode

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@WeActStudio @Clementk304