LABVIEW and USB ??????

Joe Pantera · Joined: 26 Jan 2006 Posts: 3

Hi I'm working with Labview. I do a Bulk transmission. I can write with the visa but I can't read.
I know that
To transfer data using a bulk pipe, use VISA Read and VISA Write.

if (modo == 0)
{
resultado = par1 + par2;
usb_put_packet(1, envia, 1, USB_DTS_TOGGLE);
}

I tried to write with the visa and all right, in other modo. Is there somebody who could help me. with this problem.
_________________
Perdon por mi Ingles pero soy de Mexican Pan de Las Tunas

j_girl · Guest

Hi,

I am also trying to use Labview with a PIC device using Bulk Transfer and we are having problems with the VISA Read program. Did you ever get your program working? If so, was the problem with the VISA read or was it the PIC and what was the fix?

Thanks,
j_girl

J1M · Joined: 15 Feb 2005 Posts: 21

Here you have an example for PicUSB, do exactly the same that VC# program for PicUSB on this page:

http://www.hobbypic.com

http://perso.wanadoo.es/j1m/picusb_labview.rar

regards!

carmarmu · Joined: 09 May 2006 Posts: 15 Location: Valencia (Spain)

I have an acquisition board done with a PIC18 with an external AD converter of 16 bits, and with the GUI with LABVIEW 7.1 (and too a remake in labview 8) and works perfectly.
I have done with Driver 2.0
Labview even helps you to generate specific driver.
I think that the problem that you have is that stays not using the suitable functions (to avoid the Express), for that reason it doesn´t work well. You watch in Labview Zone,you have simple programs that will help you to program your application correctly.
Luck.

Warunaedu · Guest

Hi, I have PICDEM FS demoboard, I wanted to make a labview program similer to PICDEM tool (read ADC/on off LED...) with VISA. I was able to create the driver for both BOOTLOADER and DEMO but not been able to read/write anything. If you know how to read, I would like to know how.
Thank you,