Crossbow with Labview driver

[jekyde]

Hi,

I'm using Crossbow wireless moduel with NI Labview 8.2. My system is,

1. Laptop: Crossbow MIB 520 is connected by COM port (virtual COM port, actually it is connected by USB), and Crossbow MICAz is attached to receive signals. The received signals are processed with NI Labview driver from http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=1FB66B354ED149C7E0440003BA230E....

2. Node #1: Corssbow MDA 320 is used for collecting signal from a pressure sensor, and Crossbow MICAz is attached for sending signals.

I want to sample the pressure signals about 100Hz. So I made programs which are installed in MICAz for each node. I check the signals with XSniffer program which is provided Crossbow, it just shows the received signals. So I can see the 100Hz signal with it.

Since the Baud rate for XSniffer is 115200, I changed the Baud rate in the NI Labview dirver which was 57600 to 115200. The Baud rate that I changed is in the zip file, Crossbow XMesh WSN\Private\WSN Connect to Gateway.vi. (Before I change the Baud rate, I could not see the signals in Labview.) However, Labview shows only about 10Hz signal.

Because another program, XSniffer with same system shows 100Hz signal, but Labview dirver does not. So I guess that there might be limitation about accepting data in Labview driver. So my question is,

Are there any sampling limitations for accepting data in NI Labview driver for Crossbow? If so, how can I fix it?

Thanks,
Joonbum Bae.

[mfitzsimons]

Did you see this thread?  http://forums.ni.com/ni/board/message?board.id=170&message.id=300906