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Is discrete input signal still raw after it is debounced ?

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jani12

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Consider a typical Automotive Embedded Software System.

A discrete input signal is 0 or 1. An example of discrete input is ignition ON or OFF.

After discrete input signal is debounced or a state change is latched, is discrete input signal still raw value?

Second question: Should Electronic Control Unit (ECU) low level software debounce discrete inputs or just read the real time state of discrete input? Are there any exceptions meaning some discrete inputs should be debounced, whereas others don't need to be debounced?
 

What do you mean by "raw" ?

Second question: Should Electronic Control Unit (ECU) low level software debounce discrete inputs or just read the real time state of discrete input? Are there any exceptions meaning some discrete inputs should be debounced, whereas others don't need to be debounced?
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It depends on the purpose of the signal.

For example - suppose you want to detect any change (even a very short change) in a signal.
If you pass your signal through a debouncer - it will be filtered out and you won't catch the change. So it doesn't make sense.
 
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