i can't receive my data from dsPic to Serial by Labview !

[chukhivuitinh]

I use examples of Labview : "Basic Serial Write and Read" but it can't read data ,but receive by Hyper Terminal is ok @_@ .

My error !!!! T_T

[crelf]

QUOTE (chukhivuitinh @ May 11 2008, 03:01 PM)

I use examples of Labview : "Basic Serial Write and Read" but it can't read data ,but receive by Hyper Terminal is ok @_@ .

The error message is your key: you don't have VISA installed (it's the subsystem that LabVIEW uses to talk to the serial port, amongst heaps of other things).

[chukhivuitinh]

QUOTE (crelf @ May 12 2008, 02:26 AM)

The error message is your key: you don't have VISA installed (it's the subsystem that LabVIEW uses to talk to the serial port, amongst heaps of other things).

thank you very much ,it run

[crelf]

QUOTE (chukhivuitinh @ May 13 2008, 09:55 PM)

thank you very much ,it run

:thumbup: Great - I'm glad to hear it!

[chukhivuitinh]

QUOTE (crelf @ May 14 2008, 10:09 PM)

:thumbup: Great - I'm glad to hear it!

hixhixhix ,i have another error ,plz help me T_T

[Yair]

Find the property node which generates the error (using probes on the error wire). The second property used in that property node is getting an invalid value. Check which property it is and you can figure out what's wrong from that.

In general, you should probably try taking some of the tutorials linked to here.

[chukhivuitinh]

QUOTE (Yen @ May 16 2008, 12:50 AM)

Find the property node which generates the error (using probes on the error wire). The second property used in that property node is getting an invalid value. Check which property it is and you can figure out what's wrong from that.

In general, you should probably try taking some of the tutorials linked to http://wiki.lavag.org/LabVIEW_tutorial#External_Links' rel='nofollow' target="_blank">here.

Yen ,thank you very much and sorry ,i'm a very ... very ... newbie .... T_T

my com haven't COM port ,i use USB->COM ,may be it is the reason .

Somebody help me to fix it ??

[crelf]

QUOTE (chukhivuitinh @ May 17 2008, 12:45 AM)

my com haven't COM port ,i use USB->COM ,may be it is the reason .

Yep - it looks like your USB/Serial converter isn't fully supported by VISA. I suggest you contact NI to find out if there is a work-around. Otherwise, I'd buy a new USB/Serial converter that is known to work with VISA like this one (there are plenty of other slightly cheaper ones available too - just search LAVA).

[Yair]

I assume crelf knows what he's talking about. Personally, I can say that I used Prolific USB to serial adapters from LabVIEW more than once and they worked fine, but I never tried that VISA window you used.

As I said, you should check which property is throwing the error and what value you're wiring into that property (e.g. maybe you're setting a baud rate of 993423534) and try to fix that first.