B4R Question Mega 2560 - accurate ticks and counter

[micro]

Hi guys
I've only done a few things with B4R so I'm not quite prepared.
I have a Mega 2560, I need to have a trick accurate every 0.1 ms to increment a long type variable and count input pulses, for counting I would like to use two of the 16 bit counters but I don't know how to initialize them and I don't know which pins they correspond to.
Is it better to use the counters or use the interrupt to capture the pulses?
Are they fast pulses coming out of an encoder (pulses already separated, up and down)
Do you have any examples to propose on how to initialize timers as counters to capture external pulses and to generate a cadence every 0.1 ms?
Thanks to all

 

[peacemaker]

B4R does not support the interruptions, it's the universal wrapper over Arduino, the transpiller of B4X-language into Arduino's C-language code.

 

[peacemaker]

frequency counter

Hello, i would like to build a frequency counter with an arduino. I found this lib and example proramm: http://interface.khm.de/index.php/lab/interfaces-advanced/arduino-frequency-counter-library/ Is it possible to embed this with the Inline C function in B4R? I need the frequency as value in...

www.b4x.com

https://www.b4x.com/android/forum/threads/timers-loopers-and-callsubplus.65989/#content - check about AddLooper

 

[micro]

frequency counter

Hello, i would like to build a frequency counter with an arduino. I found this lib and example proramm: http://interface.khm.de/index.php/lab/interfaces-advanced/arduino-frequency-counter-library/ Is it possible to embed this with the Inline C function in B4R? I need the frequency as value in...

www.b4x.com

https://www.b4x.com/android/forum/threads/timers-loopers-and-callsubplus.65989/#content - check about AddLooper

Thanks peacemaker

One more piece of information
How are the 4 serials present on the mega 2560 defined in B4R?
Serial1
Serial2
........

 

[peacemaker]

defined in B4R

IMHO, only one Serial can be used by the B4R libs, other interfaces can be used after switching, or by SoftwareSerial

Hardware Serial on ESP32

I am using the following (Erel Tutorial) to access the second hardware serial on an ESP 32 It will not compile In Arduino you have to define a hardware serial as HardwareSerial Serial2(2); // Second Hardware Port Is there something else that needs to be done in this snippet #if C void...

www.b4x.com

For the internal counter usage - only C-code can be used, somehow: https://forum.arduino.cc/t/count-in...t-counter-present-in-arduino-mega-2560/693431

atmega2560 16-bit counter pin - Google Search

 

[micro]

Thank you very much for the advice

 

[micro]

Hi
another question
I have a long variable into the code and the behavior is different between Log and astream1.Write (astream1 is connected to the other free serial of mega2560).
Example:

varlong = "12345678"

With

Log(varlong, CRLF)

the value written in the window logs is correct, but if I do

Dim buff() As Byte = JoinBytes(Array(bc.LongsToBytes(Array As Long(varlong)), Array As Byte(13)))
astream1.Write(buff)

The values received are wrong, where am I going wrong?
Thanks

 

[peacemaker]

No idea, it's another topic.
And strange that "long" is string.

 

[micro]

No idea, it's another topic.
And strange that "long" is string.

Sorry I misrepresented the value, it is without quotes, varlong is a variable that is always incremented and in my example the value reached is 12345678

 

[micro]

Sorry I misrepresented the value, it is without quotes, varlong is a variable that is always incremented and in my example the value reached is 12345678

Okay, it was my mistake, now work.
Only one major problem, I used the StateChanged function to capture the econder pulses but some count loses it.
Can In line C be used to interrupt on pin state change or a more effective method?
Thanks

 

[tigrot]

IMHO, only one Serial can be used by the B4R libs, other interfaces can be used after switching, or by SoftwareSerial

Hardware Serial on ESP32

I am using the following (Erel Tutorial) to access the second hardware serial on an ESP 32 It will not compile In Arduino you have to define a hardware serial as HardwareSerial Serial2(2); // Second Hardware Port Is there something else that needs to be done in this snippet #if C void...

www.b4x.com

For the internal counter usage - only C-code can be used, somehow: https://forum.arduino.cc/t/count-in...t-counter-present-in-arduino-mega-2560/693431

atmega2560 16-bit counter pin - Google Search

Hi Peacemaker
I have one app using all 4 serial all together on a Mega 2560. The issue you describe, is relative to ESP32.
I have updated Arduino library to support hardware handshake.

 

[peacemaker]

Link to the update lib is better to mention

 

[micro]

Then
just a refresher, with B4R it is much more familiar to produce code but I had to switch directly to working with the Arduino IDE to use the interrupt better.
With StateChanged I can discriminate with a symmetrical square wave and from the width of at least 400 us all pulses and just better with Looper but not so reliable counting especially if I insert an acceleration to the incremental encoder.
For additional serials I repeat no problem with B4R.

Thanks to all anyway as always.