SPI – Learnt a new term today

I was asking a question about screen brightness today and it was stated ‘… make sure SPI is enabled’.


I didn’t know what SPI was. It appears to stand for Serial Peripheral Interface. It looks as if it needs to be enabled to send data in both directions, e.g., from the R Pi to the screen and from the screen to the R Pi. I would have thought this was a vital job of an OS so I am not sure why it wouldn’t be enabled already.

Anyone any more light on the subject!


2 thoughts on “SPI – Learnt a new term today

  1. That’s weird… SPI shouldn’t have any effect on that… Does it? SPI’s used for things like Analog to Digital converters to communicate complex information over one/two GPIO pins.


  2. This was a difficulty we were having with the Pi-Tops. I didn’t think it was anything to do with SPI. You can read a lot in forums which you need to take with a pinch of salt! Anyway, thanks for explaining what it is.


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