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Gavin


Washington University in St Louis

Last seen: 3 dagar ago |  Active since 2024

Followers: 0   Following: 0

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Programming Languages:
C++, C, MATLAB, Arduino, Assembly
Spoken Languages:
English
Pronouns:
He/him

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Question


Detecting a serial port valid after disconnect/reconnect
I asked before with a long question and got no answers, so let's keep it simpler. Serial port is connected to Arduino Arduino ...

3 dagar ago | 1 answer | 0

1

answer

Question


How do I reconnect USB serial that gets lost programatically.
MatLab R2024b using AppDesigner on Windows 10 Enterprise My GUI app connects to an Arduino which sometimes looses it's connecti...

6 dagar ago | 1 answer | 1

1

answer

Question


How can I keep my app in front on the screen?
When certain functions are called such as uigetfile() or uigetdir() after the file or directory is chosen the AD generated app g...

3 månader ago | 1 answer | 0

1

answer

Question


App Designer 2024b broken
I was fine using AD in 2023b but now with 2024b I'm finding weird things. Asking if anyone else has seen these issues. (I also r...

3 månader ago | 0 answers | 0

0

answers

Question


Not enough trace back to find error
Apparently I have {} where I should have () I guess. I get this warning but the traceback list doesn't go far enough to find my ...

3 månader ago | 1 answer | 0

1

answer

Question


Short Pause doesn't come back
Using App Designer I was running my program with no breakpoints set. Suddenly it stopped running in a place it shouldn't so I b...

3 månader ago | 0 answers | 0

0

answers

Question


Delete a timer object in it's callback
I have short timer callbacks to change a color from a button press or other action back to it's original color. This gives a nic...

4 månader ago | 2 answers | 0

2

answers

Answered
Why did CD folder; give such a goofy error message when I just forgot ()
All good answers and I would have retracted the question once I noticed I'd forgotten the () Of course cd (apploc) is what I wa...

4 månader ago | 0

| accepted

Question


Compare char data in a cell {'x'} to a character 'x'
I want to find what's in my table that's in a category column 1 If you read through you will see what I tries and how I finally...

4 månader ago | 3 answers | 0

3

answers

Question


Why did CD folder; give such a goofy error message when I just forgot ()
It works other places but suddenly I can change directory K>> apploc apploc = 'C:\Users\CPSLab\Documents\OdorChoiceDev\' ...

4 månader ago | 3 answers | 0

3

answers

Question


How do I do char2num (assume Ascii)?
num2 char is easy enough num = char(122) returns 'z' ; but how can I get back to the ascii value from a char? Do I really have ...

4 månader ago | 1 answer | 0

1

answer

Answered
Error in MatLab's own routine.
Confusion between {} () and [] and when to use commas between elements and if they need quotation marks or not and if so ' ' or ...

4 månader ago | 0

| accepted

Answered
USB callback "terminator" fails to trigger a read when messages are close together
See answers to other ways I asked this question and related issues https://www.mathworks.com/matlabcentral/answers/2152950-in-a...

4 månader ago | 0

| accepted

Answered
How to develop a FIFO Circular Buffer for analyzing real-time data?
For a simpler case of needing a circular buffer to process USB or other irregularly timed input, try this: Initialize the buffe...

4 månader ago | 0

Answered
In App Designed app: When does a function called within another function spawn a new thread?
See where @Umar laid it out very well my related issue and provided several solutions to that part of the problem https://www.m...

4 månader ago | 0

| accepted

Answered
uiputfile blocks all of MatLab any error it keeps repeating, it requires CTR-ALT-DEL end task (my app) to exit
I changed from uiputfile() to uigetdir(startingFolder... as that is what I was really looking for: Where will the output files g...

4 månader ago | 0

| accepted

Question


Can I call a function from another function and not come back?
I am running a function which at the end either returns or calls another function. Way back in the old days in assembler I'd do...

4 månader ago | 2 answers | 0

2

answers

Question


waitfor( ) isn't working for a SerialPort
Seems simple my code does this to be sure everything has been processed from the USB port connected to an Arduino Pico. if (app...

4 månader ago | 1 answer | 0

1

answer

Answered
In App Designed app: When does a function called within another function spawn a new thread?
I had several confounding issues for example that RunTrial() just starts a trial then returns; so waiting until its really finis...

4 månader ago | 0

Question


Error in MatLab's own routine.
How can I possibly fix this? Warning: The following error was caught while executing 'onCleanup' class destructor: Brace inde...

4 månader ago | 1 answer | 0

1

answer

Question


Error using inputdlg() second time through same code
My code works fine on the first pass but when I press the button a second time I get an error. answer is a local variable so is...

4 månader ago | 1 answer | 0

1

answer

Question


uiputfile blocks all of MatLab any error it keeps repeating, it requires CTR-ALT-DEL end task (my app) to exit
I wrote this code that ends up being an endless loop Due to weird treatment of this particular dialog I can't add a breakpoint ...

4 månader ago | 1 answer | 0

1

answer

Question


In App Designed app: When does a function called within another function spawn a new thread?
I'm having SO much trouble! I think maybe when I call a function from within another function or callback it's going into a new ...

4 månader ago | 2 answers | 0

2

answers

Question


USB callback "terminator" fails to trigger a read when messages are close together
My App Designer program uses USB communication to an Arduino It usually works but every once in a while Matlab fails to read. ...

4 månader ago | 2 answers | 0

2

answers

Question


How do I print a % character into a file
I am creating an app in App Designer, creating an output file that will be an .m file for another user to run later. I'd like ...

4 månader ago | 3 answers | 0

3

answers

Question


App designer Locks me out of editing things I need to change
I should be able to edit comments or add a comment at the top of an app created % Button pushed function: SavingFolderButton ...

6 månader ago | 2 answers | 0

2

answers

Question


append (not strcat) to combine strings with whitespace (\n)
I have a text box (text edit field, shoud it be a label box?) I want to add lines of text to it without loosing the old text. ...

6 månader ago | 3 answers | 0

3

answers

Question


What does "Interrupt while evaluating Button PrivateButtonPushedFcn." mean?
My program was working but now I'm getting this. Interrupt while evaluating Button PrivateButtonPushedFcn. If I knew more abou...

6 månader ago | 1 answer | 0

1

answer

Question


Know if Serialport is connected (in App Designer program); ishandle() always true
I open a serial port to my Arduino and it usually works. I'm trying to take care of various errors, for one of which I need to k...

6 månader ago | 1 answer | 0

1

answer

Question


See also ... blocks viewing of answer
I'm trying to see an answer that includes a screenshot apparently. The See Also pane is blocking much of the screen so I can't s...

6 månader ago | 1 answer | 0

1

answer

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