Arduino Due - LabView

t0bsN · June 15, 2016, 8:57am

Hello Community,

I use Arduino Due and my problem is:

I want to click a Button in my Labview Programm and the Arduino have to put out a specific C code which I wrote.

So I wrote an Code, which put out a signal on a Digital output pin.... my task is, that the signal should change if I click the button in my Program

Did anyone do such a project ?

I want to realize it with the Visa tool...
So maybe send a specific signal by clicking the button and in my c code there are 2 if cases which different types e.g. clicking button 1 sends a A and clicking button 2 sends a B ...so in the if case I can write if A .... and if B ....

anyone an idea to realize that ?

Best Regards.

system · June 15, 2016, 9:07am

and the Arduino have to put out a specific C code which I wrote.

This does not make sense. The Arduino can EXECUTE some C code AFTER it has been compiled and linked and uploaded as part of a sketch. It can NOT output code, other than as a stream of text, but then it isn't code. It's just text.

Did anyone do such a project ?

Lots of people.

What is important is what YOU have tried and what the results were.

t0bsN · June 15, 2016, 9:16am

PaulS:
This does not make sense. The Arduino can EXECUTE some C code AFTER it has been compiled and linked and uploaded as part of a sketch. It can NOT output code, other than as a stream of text, but then it isn't code. It's just text.
Lots of people.

What is important is what YOU have tried and what the results were.

ye, sorry for this articulation

so I try to explain again
...I wrote an c-Code and uploaded the sketch to the arduino.... The sketch results, that I get an signal on pin 6 and pin 7 with 1 MHz...on Pin 6 it looks like 1010 and on pin 7 it looks like 1100

Now I want, that this both signals I get only from Pin 6 by clicking a button in Labview....
Clicking Button 1 the output signal is 1010
and clicking button 2 the output signal is 1100

I hope u can understand my task !?

system · June 15, 2016, 9:22am

I hope u can understand my task !?

No. I don't understand what "on Pin 6 it looks like 1010" means. Pin 6 is a digital pin. It will read either HIGH (1) or LOW (0) at any given point in time.

Now I want, that this both signals I get only from Pin 6 by clicking a button in Labview....

Are you trying to get input from pin 6 into LabView? Or, are you trying to make the Arduino do something when LabView tells it to?

t0bsN · June 15, 2016, 9:32am

No. I don't understand what "on Pin 6 it looks like 1010" means. Pin 6 is a digital pin. It will read either HIGH (1) or LOW (0) at any given point in time.

The Pins are set as Output....and they send me a High/Low Signal e.g. 1010 means I get a signal like

|¯||¯|_

and yes I trying to make the Arduino do something when LabView tells it to do

By clicking a Button on Labview the output signal should change e.g. to 1100 -> |¯¯|__|¯¯|

I already wrote a program with this different output signals, but every signal on a different pin on the arduino..

Now I want to switch the signals on just 1 pin by clicking a button in LabView

system · June 15, 2016, 10:11am

I already wrote a program with this different output signals, but every signal on a different pin on the arduino..

Which you still haven't posted.

The ONLY means of communication between LabView and the Arduino is the serial port. So, forget about LabView for now. Modify the Arduino sketch to output data on one pin based on what character is read from the serial port. Send that character from the Serial Monitor application.

When that works, the Arduino won't even know that the app on the other end has changed from the Serial Monitor app to LabView.

t0bsN · June 15, 2016, 10:36am

Which you still haven't posted.

So that's my Code at the moment

#define NOP __asm__ __volatile__ ("nop\n\t");
#define PAUSE NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP
#define PAUSEEND NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP 

// 1 NOP Befehl entspricht 12ns (1/84MHz)

void setup() {
  
  pinMode(5, OUTPUT); 
  pinMode(6, OUTPUT);
}

void loop() {
/*
on pin 5: 1010 1010 1100 1100  
on pin 6: 1110 1110 1010 1010


*/
  Pio *p = digitalPinToPort(7); // Port.C
  
  uint32_t s56 = digitalPinToBitMask(5)|digitalPinToBitMask(6);
  uint32_t s5 = digitalPinToBitMask(5);
  uint32_t c5 = digitalPinToBitMask(5);
  uint32_t c56 = digitalPinToBitMask(5)|digitalPinToBitMask(6);
  uint32_t c6 = digitalPinToBitMask(6);
  uint32_t s6 = digitalPinToBitMask(6);
  

  
  while (1) {
    p->PIO_SODR = s56;PAUSE p->PIO_CODR = c5;PAUSE p->PIO_SODR = s5;PAUSE p->PIO_CODR = c56;PAUSE
    p->PIO_SODR = s56;PAUSE p->PIO_CODR = c5;PAUSE p->PIO_SODR = s5;PAUSE p->PIO_CODR = c56;PAUSE
    p->PIO_SODR = s56;PAUSE p->PIO_CODR = c6;PAUSE p->PIO_CODR = c5;p->PIO_SODR = s6;PAUSE p->PIO_CODR = c6;PAUSE
    p->PIO_SODR = s56;PAUSE p->PIO_CODR = c6;PAUSE p->PIO_CODR = c5;p->PIO_SODR = s6;PAUSE p->PIO_CODR = c6;PAUSEEND
         
  }
}

Ah okay....

So the if case have to look like

char input = (char)Serial.read();

while(1){

if (input == 'A') {
 ..Code for Signal 1...
 }

if(input == 'B') {
...Code for Signal 2
 }

}

system · June 15, 2016, 11:29am

So the if case have to look like

I doubt seriously that you want a while loop there, but that is the general idea. Make sure that you check that there is data to be read before you try to read.

t0bsN · June 15, 2016, 11:57am

okay thanks.

so this should be work ?

#define NOP __asm__ __volatile__ ("nop\n\t");
#define PAUSE NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP
#define PAUSEEND NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP 

// 1 NOP Befehl entspricht 12ns (1/84MHz)

void setup() {
  
  pinMode(5, OUTPUT); 
  pinMode(6, OUTPUT);
}

void loop() {
/*
on pin 5: 
	FOR A: 1010 1010 1100 1100  
        FOR B: 1110 1110 1010 1010


*/
  Pio *p = digitalPinToPort(7); // Port.C

  char input = (char)Serial.read();
  
  uint32_t s5 = digitalPinToBitMask(5);
  uint32_t c5 = digitalPinToBitMask(5);

  
  if(input == 'A'){

  p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE 
  p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE
  p->PIO_SODR = s5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE p->PIO_CODR = c5; PAUSE
  p->PIO_SODR = s5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE p->PIO_CODR = c5; PAUSEEND
  }

  if(input == 'B'){
  p->PIO_SODR = s5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE
  p->PIO_SODR = s5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE
  p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE
  p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSE p->PIO_SODR = s5; PAUSE p->PIO_CODR = c5; PAUSEEND
  }

}

And can u send me an example how can I realize in LabView to send an 'A' oder 'B' by press the Button ?
Would be very nice...

thanks a lot.

ieee488 · June 15, 2016, 12:33pm

t0bsN:
And can u send me an example how can I realize in LabView to send an 'A' oder 'B' by press the Button ?
Would be very nice...

thanks a lot.

That would be very nice, but that isn't going to happen here.

If you want LabVIEW code, go to the NI LabVIEW forums. There are at least 2.

t0bsN · June 16, 2016, 6:32am

Okay then I have to try it in a NI Forum...

Thanks to PaulS for your help

system · June 16, 2016, 9:20am

  Pio *p = digitalPinToPort(7); // Port.C

What is a Pio and why are you defining a pointer to point to an int?

And can u send me an example how can I realize in LabView to send an 'A' oder 'B' by press the Button ?

Even if I knew anything about LabView, and this was the appropriate forum, no I couldn't. I don't even understand what "to send an 'A' oder 'B'" means. Nor do I know what Button you are referring to.

t0bsN · June 16, 2016, 11:56am

Pio *p = digitalPinToPort(7); // Port.C

this is just for initialize the Port c with include the relvant pins for me...

I found a correct way now and it seems to work

To send an "A" I attached a picture....just in the Sketch on the arduino u have to use the ASCII for A..

so u have to write if(Serial.read()==65) {...}

system · June 16, 2016, 5:45pm

so u have to write if(Serial.read()==65) {...}

Why? It is exactly the same as if you write

if(Serial.read() == 'A')

but the latter is far easier to understand.

t0bsN · June 17, 2016, 7:11am

Yes it is, but if I write if(Serial.read() == 'A') the program doesn't work

and if I use if(Serial.read() == 65) it works

I don't know why^^

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Arduino Due - LabView

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