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(SOLVED)[Library] Only one pulseIn() constructor recognized ?
02-11-2013, 11:00 PM, (This post was last modified: 03-11-2013, 02:13 PM by FlacoDev.)
#1
(SOLVED)[Library] Only one pulseIn() constructor recognized ?
Hi guys,

I have a little problem with the function pulseIn().

On the pulseIn() page in the Arduino language's documentation we can see that pulseIn() has two constructor: pulseIn(pin, value) and pulseIn(pin, value, timeout), where timeout is, in fact, an optional parameter.

so, when I do (for example):

Code:
... (some definitions)
#define echoPin 6

long duration;

setup()
{
   ...
   pinMode(echoPin, INPUT);
   ...
}

loop()
{
   ...
   duration = pulseIn(echoPin, HIGH);
   ...
}

It will not work; I must write : duration = pulseIn(echoPin, HIGH, 1000)

I know, it's no big deal, but I just wanted to note that. ^^

Sorry if this thread is in the wrong section.

Flaco
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03-11-2013, 11:14 AM,
#2
RE: [Library] Only one pulseIn() constructor recognized ?
Arduino uses C++ and Pinguino uses C.
C doesn't allow optional argument. The only way would be to declare each function as a varargs function. Not sure it's a good idea.
This is one of the reason why Pinguino will never be 100% compatible with Arduino.
It is easier to complain than it is to do, but it is better to do than it is to complain.
Reply
03-11-2013, 02:12 PM,
#3
RE: [Library] Only one pulseIn() constructor recognized ?
Smile Okay; I see!
Thank you regis!
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