how to send continuous commands to COM Port?

[pockey]

Hi, all

I'm writing LabVIEW to test a board through COM Port.

There're buttons on the front panel for user to send commands to the board.

I could send one command at a time and display the response on a string indicator...

However, I did not know how to send continuous commands one-by-one with just one button.

For the "Reset" buttons, it will only send "x" to the COM Port, and the program runs OK.

For the "RX_LOWBAND" button, it should send string "p rxon1", "p paen0", "p hp0", "r 0x0118" and "r 0x24ad" one-by-one to the board and get each corresponding response.

I use a stacked sequence stracture to send these five commands one after one, however, the program could only implement the first one.

Since I'm quite new to LabVIEW, I do not know whether there's some easy way to realize that...

Could anyone give me some suggestion?

Thanks a lot!

Download File:post-6631-1168846857.vi

[Donald]

Hello,

I think you should consider a redesign of your code starting from one of the Design Patterns included with the standard templates. Depending on your knowledge of LabVIEW and application requirements you should go for a one loop state machine or consumer/producer pattern with 2 loops.

Also consider using events instead of polling buttons and do not forget your error handling.

Best regard,

Donald

[karthik]

Hello pockey,

Donald is absolutely correct... :thumbup:

I have moved my mouse considering Donald's suggestions and your requirement.

Result is a small piece of code which can guide in right direction.

I have used events instead of pooling and included error handling.

I am sure you can figure out remaining coding part...

All the best.

Regards,

Karthik SP

Download File:post-4779-1168870168.vi

[pockey]

Thanks a lot, karthik

with your template, the problem seems clear to me.

I'll try to figure other parts out!