I'm reading an analogue value from a Pin on a µC.
I want to check periodically if the value has changed more than x
.
Here, I am using the abs()
function, but I want to keep it simple.
Can you help me?
int algVal= 0;
int oldVal = 0
while(1){
algVal = getAlgVal();
if(abs(algVal - oldVal) > x)
{
doStuff();
}
oldVal= algVal:
}
That sounds like a fantastic approach, and would probably be very nice in terms of runtime performance, abs()
for integers is cheap. If in doubt, read the generated assembly of course.