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A comment on SPI: The serial peripheral interface [video]. Parent comment

Re:SPI: The serial peripheral interface [video] by jstanley on Monday November 22, 2021 @02:11PM (#29310411)
If that counts then you can do exactly the same thing with a UART-based protocol, no?
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Re:SPI: The serial peripheral interface [video] by monocasa on Monday November 22, 2021 @04:18PM (#29311671)
Do you know of any uart hardware that'll only latch on /SS active?
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Re:SPI: The serial peripheral interface [video] by jstanley on Monday November 22, 2021 @04:59PM (#29312033)
No, I don't, but at the point where you're integrating a UART, adding a couple of logic gates on the data input doesn't seem too much of a stretch.

I'm not saying using UARTs instead of SPI is a good idea! I'm just saying the reason that it's not a good idea is not because UART's don't have /SS inputs.

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Re:SPI: The serial peripheral interface [video] by monocasa on Monday November 22, 2021 @05:19PM (#29312224)
But then how is the device supposed to know when it can respond? Most uart devices don't respect flow control. They assume they can transmit at any point.
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Re:SPI: The serial peripheral interface [video] by jstanley on Tuesday November 23, 2021 @05:57AM (#29316419)
Fair point.
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