Update Due spec sheets?

[jhaine]

I have just re-written a bunch of software and tested it on both Uno and Nano, though the final target was to be a Due. The latest version of my code hugely simplified my approach by a simple application of the pulseIn() function. I was therefore somewhat dismayed to find when I loaded it into a Due that it didn't work, and in fact with some further research I discovered that the function is not properly supported on the Due.

Arduino DUE pulseIn() ,This function does not work properly

I tried to compile a program currently running on the UNO board and run it on the DUE board. However, the time returned by the pulseIn instruction is not the same on a DUE board, and the error is large, which is a problem.What is required for the pulseIn instruction to work properly on a DUE board? Arduino IDE windows 1.8.12 --code-- int pin = 2; unsigned long duration; void setup() { Serial.begin(9600); pinMode(pin, INPUT); } void loop() { duration = pulseIn(pin, HIGH); Serial.printl…

I am sure it would be useful if such hardware incompatibilities could be documented, ideally both in the function descriptions and in the product specifications. Any chance that this could be done please?

[awneil]

I think it would be impractical for the datasheet to mention every single thing that's not compatible.

But the documentation for PulseIn should certainly state that it has limited compatibility:

pulseIn() - Arduino Reference

I wonder if it works with the new UNO R4 ... ?

[jhaine]

Thanks. The function documentation would be very useful. Could there be scope for a "compatibility matrix" to be compiled to capture issues that are reported?