C++ Weekly - Ep 56 - Zero Cost Embedded C++ - Part 3

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[juergenm]

Jason, please continue the embedded series.

[DrGreenGiant]

Really enjoyed these hardware focused videos, thank you

[beachedwhale]

I suspect, will verify later, that if you used a static const array and defined the ISR's, the if could be removed. The compile time code is where c++ really shines in embedded as it gets rid of the macro's and untyped stuff. Like a memory<location...> class like in your c64 Cpp demo is nice. I wish there was a non Imp defined way to do the int to pointer conversion.
Most ISR's will often only update some state values or state function pointer and wake the main loop to run so it may not make sense to call functions as that can run into trouble with multiple ISR calls and dependencies.

[johaneriksson]

I think you could have assembly-stepped into the instructions in the lambda at the end of the video

[paulm.bendixen]

This is great, looking forward to see how far this is going.

[saharsbishnoi]

Hi Jason, do you do group training ("Modern Embedded C++") in the UK ?

[srinath]

Why are you not using functional header?

[davidthacher]

This is bad practice/example. ISRs are supposed to be very quick, this adds a little extra overhead than needed. I get the point of the example. The hardware may already support this using multivector interrupt vectors.