Read from RS232 problems

[johnsold]

We are trying to understand exactly what characters the PIC is transmitting.  In your printf statements you have "\n" shown. What is the decimal or hexadecimal value of the bytes transmitted when "\n" is sent?

Lynn

[filjoa]

this is an printscreen of my terminal... I think "\n" is "0A" in hex

http://img829.imageshack.us/img829/4572/xyt7.jpg

[johnsold]

Yes. 0A hex is a line feed character.

Since you are sending line feeds at the end of each message, you should be able to remove the Bytes at Port property node and the case structure (keeping the code in the True case only). Also remove the Wait (ms). The VISA Read will wait until the line feed occurs.

Lynn

[filjoa]

hi

thanks... you can put an image for I can see what I can make this?

sorry but I only start programing Labview on last mount...

best regards

[johnsold]

The while loop needs only the code which is inside the True case of the case structure.  It would look like this.

Lynn

[filjoa]

thanks for all your help...

I try this example and it continue don't work

see the printscreen: http://img825.imageshack.us/img825/2740/8f6e.jpg

stay correct?

I send you my file on attachement

[filjoa]

Hi

stay work... thanks... now only need put only need put "timout" on VISA Serial, to "1000"

thank you very much for all your help..

best regards

[billko]

This was a very impressive thread, given that it seems the OP native language was not English.

[filjoa]

Hi

yes.. I'm portuguese..

sorry my strange ingles

[johnsold]

I am glad you got it working.

I had not noticed that you had reduced the timeout to 10 ms. You do not need the Bytes at Port property node outside the loop.  It does nothing and can be completely removed.

Lynn