On Sun, 24 Nov 2019 18:49:59 GMT, stephen@mpeforth.com (Stephen Pelc)
wrote:

>I2C is an edge-triggered protocol by design. Very small but fast
>glitches can upset the hardware peripherals. Designing I2C interfaces
>with good noise immunity is well beyond the scope of very
>cost-sensitive devices including the Raspberry Pi.

Given the nature of I2C, high-reliability and safety-critical
applications need to assume that I2C *will* fail at some stage.

Reliabilty of a comms link does not mean that the link has no
errors, only that you will be able to detect the errors.

Stephen


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Stephen Pelc, stephen@mpeforth.com
MicroProcessor Engineering Ltd - More Real, Less Time
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