B4R Question B4R time options available ?

[inakigarm]

Hi Erel:

In several sensor communications is basic to find the exact time when a pin is triggered comparing an initial state or between states (distance sensors, etc..)

Are you thinking about including these in core functions ? (like DateTime)

Thanks

P.D:

Arduino Time Library

PJRC Time Library

 

[Erel]

You can use Millis for that. It is similar to DateTime.Now.

It returns the number of milliseconds since boot. Make sure to use ULong variables for that.

 

[inakigarm]

Yes, tried with millis,but the problem with that function is resolution (only miliseconds). In several schematics, we'll need more timing resolutions (like microseconds - Arduino function)
ex:
distance sensor: measuring distance finding the time between a trigger and an echo sound (using sound speed - air - formula)

 

[Erel]

I will add it. Note that you can also call it with this code:

Sub Process_Globals
   Public Serial1 As Serial
   Private microsTime As ULong 'ignore
End Sub

Private Sub AppStart
   Serial1.Initialize(115200)
   Log("AppStart")
   RunNative("micro", Null)
   Log(microsTime)
   RunNative("micro", Null)
   Log(microsTime)
End Sub

#if C
void micro (B4R::Object* o) {
   b4r_main::_microstime = micros();
}
#End if

https://www.b4x.com/android/forum/threads/inline-c-c.65714/

 

[inakigarm]

Fantastic !! Thanks again Erel !

 

[Cableguy]

Hi Erel:
...

Are you thinking about including these in core functions ? (like DateTime)

Thanks

P.D:

Arduino Time Library

PJRC Time Library

I think the issue is, since arduino does not come with built-in rtc, it will only be available as a lib for such type of shield...

 

[BarryW]

How to convert this microstime to time format?

 

[Erel]

Please start a new thread for this question.

Note that there is a new Micros keyword.