Grab a file without writting full name

I want to grab a file that is always located in same folder that starts with the name "Target" and ends with ".hex" but in front of Target there is a version number that can change.

In the following line you can see I'm trying to use the " * " to pick up any file. But this doesn't work. Anyone can help me how to do this?

firmwareFile = [basePath{1} '..\binaries\Target*.hex'];

Answer 1

[Kevin Holly]

Can you try this?

folder = [basePath{1},filesep,'binaries']; % I'm assuming this is the folder location
firmwareFiles = dir(fullfile(folder,'Target*.hex'))

[Paulo Correia]

Resulted in the following error:

"The following error occurred converting from char to struct: Conversion to struct from char is not possible."

[Kevin Holly]

What is basePath{1}?

[Paulo Correia]

I think the isse is that firmareFiles is now a structure.

basePath = extractBetween(thisScriptLocation, 1, find(thisScriptLocation == '\', 1, 'last'));

[Kevin Holly]

You can access the file names with:

firmwareFiles.name

Access the first one as such:

firmwareFiles(1).name

[Paulo Correia]

Still have the same error with the char to struct

[Kevin Holly]

What line is giving you the error?

[Paulo Correia]

folder = [basePath{1},filesep,'binaries']; % I'm assuming this is the folder location

[Kevin Holly]

Hmm...

I'm not sure how you are getting an error there. Are you sure that is the right line or is it written different in your code?

basePath = extractBetween('This is a test character array','a ',' character');
folder = [basePath{1},filesep,'binaries']

folder = 'test/binaries'

[Paulo Correia]

I found out the issue I added this extra line. And now the firmwareFIle has the whole path for the file

firmwareFiles = dir(fullfile(folder,'Target*.hex'))
firmwareFile = [firmwareFiles.folder,filesep,firmwareFiles.name]

[Paulo Correia]

Hello, how do I check if thie firmwareFiles is empty or has more than one file to throw an error?

[Kevin Holly]

To detect if it is empty:

isempty(firmwareFiles)

To detect how many files were detected:

size(firmwareFiles,1)