I want to write and read a hex file from the flash buffer of the microcontroller through the USB serial port
hello sir,
I am developing a GUI screen from that i want to write and read a hex file from the flash buffer of the microcontroller through the USB serial port. the driver i am using is FTDID2XX driver.if anyone having examples of loading file through serial port.Please reply me .
Thanks
Looks like you should post your request in the LabVIEW forum, this one here preferentially is for LabWindows/CVI...
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How can i write and read the same data
hi,
i have attached my program to this mail. i have some problems in this program.
problems:
1. I want to select the threshold for the rms,varience and s.d.
But what i used is not doing that. i want to fix the upper threshold value and lower threshold value.
when ever the input crosses upper threshold value i want the output and it will remains uptill the value above the lower threshold value.
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REGARDS
CHAMARTHY KOMAL DILEEP.
[email protected]
Attachments:
dileep.vi 93 KBThe easiest way to perform a certain action (such as file I/O) based on a certain condition (such as whether a value has passed a certain threshold) is to use a comparison VI in combination with a case structure. Then you can specify that if your rms, standard deviation and variance are above a threshold then perform a certain action.
Also consider using shift registers to keep track of data from the last loop. If I understand you correctly, you want to start logging data when an upper threshold has been passed. Then you want to continue logging data until a lower threshold is passed. I have attached a non-functional but explanatory VI that will help explain how to implement logic to that effect. It also demonstrates that you can indeed write and read from the same file in a loop. The best way to do this is to open the file before the loop, do all the necessary writing and reading in the loop, and then close the file after the loop.
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National Instruments
Attachments:
dileep_example.vi 61 KB -
DAQ vi to perform digital write and read measurements using 32 bits binary data saved in a file
Hi
DAQ vi to perform digital write and read measurements using 32 bits binary data saved in a file
Two main
sections:
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Perform
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2)
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This
project is one of my many assignments for my master thesis, so please i’ll
appreciate every help as I’m not really efficient with LabVIEW programming but
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Currently I’m
practicing with LabVIEW 8.6/NI DAQmx 8.8 Demo versions and NI USB 6509
simulated device.
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Paul
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DIO_write_read DAQ from file.vi 17 KBWhat does your file look like? The DAQmx write is expecting a single U32 value, not an array of I64.
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Controller.vi 27 KBJ_es--
The program that you posted looks to be ok for the most part, you might consider putting an open after your configure (but that's trivial). The other thing that is a minor issue is the loop tunnel coming out of your for loop is currently being auto-indexed. This function is used to index data for each interation of the loop. You are using a static address (not an array) and so you don't need this. If you right-click and remove the auto-index the broken wire will go away. Other than that it should be ok.
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I Have NI 6602 timing card and i'm trying to use it in order to write and read using the
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Options for having cFP write and read file
I have a cFP VI that runs on a cFP 2110 controller for doing process automation on a custom piece of equipment. It seems that each month we use the same equipment for a slightly different automated process routine. What I have done in the past is to make a copy of my VI's and real-time project and then make the changes in the code for the new process. Most of the changes to the code between processes are just changes to numeric controllers to change ramp and slope times or the number of times the code repeats a set of steps. I have been playing around with writing a sort of configurations page to my VI to allow the user to change some numeric controls, save them to a file using the Read Key.VI and Write Key.VI. In the simple tests I have done, this works If I have a target VI on the cFP 2110 and a host VI where I can have the configurations page and save the file to my computer's hard drive.
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Attachments:
Test read write key.vi 58 KBStepanieO,
I finally had a change to play around with the cFP file write and read again. I was able to write a the cFP and read the file back using write to spreadsheet and read from spreadsheet. The one problem I can't seem to figure out is how you browse the cFP to select a file. If I enter the file name and path into the string command it works. But If I try to browse the cFP, the browse button only shows the computer hard drives. Is there a way to browse the cFP controller for a specific file?
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Danny
Danny
Attachments:
Write to spreadsheet.vi 18 KB -
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