Unable to Read File 'ex1data1.txt'. No Such File or Directory.
Are y'all trying to run an Arduino sketch, simply keep coming beyond a "No such file or directory" error? This is a pretty common error! Keep watching to learn more well-nigh 2 easy fixes for this error.
No such file fault!
Mistake messages tin can be such a pain, only they're supposed to tell us something about the error we fabricated. Permit's take a look at the ane beneath. If you wait at the bottom portion of the Arduino IDE where the error message shows up, there'south this handy little button that says "copy fault messages".
If you click on it, it copies the error message inside the piddling window to the clipboard on the computer.
What y'all tin practise now is paste it into Google, for example, and do a search which can help you find out more about the error. Or you could paste it into a forum and say, "Hey, I've got this fault bulletin, delight help me."
For this situation, nevertheless, we've copied it and we're going to paste it into a text editor then we can accept a closer look at what the fault bulletin is really saying.
Decoding the no such file error
The first sentence just says which Arduino version is in use, which operating system is running, and which board is selected.
The second judgement actually starts getting into the mistake a trivial fleck. The beginning thing information technology gives us is the name of the program. And so, in this example, the proper noun of the programme was "Knob".
If you look at the Arduino IDE, the the numbers on the left are called line numbers of the plan and they're a reference to help the states observe where different lines of code are. The "10" later on "Knob" is the line number (in the Arduino IDE) that the error was detected on.
The "19" is a reference to how long that line of code is, so how many spaces or characters long is it.
Then it tells us the actual fault. Information technology says "servo.h: No such file or directory". Why are nosotros getting this fault?
The error of our means
Well, let's accept a look at line 10 and come across what it says. Information technology says "#include <servo.h>"
When we verify this code, what this line does is tell the Arduino IDE compiler "Hey, for this program to work, you lot need to go get this file servo.h".
Let's say you had a label making auto and you were trying to run the label maker and impress some labels. To brand it work, yous take to put in a scroll of labels. If you don't have that roll of labels, and so your label maker isn't gonna work. So our program'southward like the label maker and the file (servo) is the roll of labels.
And so the error bulletin is like "Hey, programmer, you lot said I needed this other file… just I looked for it and it'southward not there. What gives? Allow's get to the bottom of this mistake message and become over two different scenarios.
Scenario 1 – fat fingers
This sketch is ane that you've written. Y'all're actually the one who wrote the "#include" line. The first thing y'all should check is your spelling and capitalization. Perchance you spelled the name of the library incorrectly, or in this example, maybe you lot didn't capitalize the right letters.
And then "servo.h" should really be a upper-case letter "S", or written out, "Servo.h". At present in this example, yous'll observe that the give-and-take servo changes colour when correctly capitalized, and that'south because the library proper noun "Servo" is recognized every bit a "central give-and-take" in the Arduino IDE. Keep in mind that might non be the case for all the libraries that you're using.
Therefore you can't use whether or not it color changed as an absolute indicator, merely it tin can exist helpful. It is amazing how long you can stare at a line of lawmaking and miss something similar a spelling or a capitalization error.
Scenario two – missing files
In this scenario you've either downloaded or copied and pasted some code from the cyberspace and you're trying to run it for the first time. Now you starting time getting this error message. Let'southward only assume that the original author of the program spelled the name of the library correctly.
We'll go ahead and skip the troubleshooting associated with scenario 1. The adjacent pace would be to verify that we actually accept the file this plan is calling for. We must besides ensure the file is in the right place.
An easy style to check to encounter if you have that file is to be in the Arduino IDE and go to Sketch > Include Library, so look for the name of that library.
Whatsoever library the #include statement was calling for, y'all want to await through this big long list for that library. If you lot don't see its exact name in this list, this means y'all do not have that library installed appropriately (they're all in alphabetical order which helps). If you don't come across information technology here, yous'll have to add the library.
The easiest way to add a library is to go to Sketch > Include Library > Manage Libraries. Information technology will open up up a dialogue box and you can search for a library. At that place's so many libraries, y'all're definitely going to want to filter.
Make certain you type the verbal word that matches the #include line. In one case you find the missing library click install. It will allow you know that it's installing the library and updating the list of libraries.
Next we tin can double-cheque it has successfully installed. Go to Sketch > Include Library and the installed library should now appear on the driblet down list. Now, when it complies, you should no longer get the error.
Other library locations
Not all libraries are in this convenient pop-upwardly window when you lot get to manage libraries. There's tons of different ways to find Arduino libraries on the web. Often, if you're downloading or copying a plan from the net, just go to the folio where you got that plan and encounter what library they're referencing. Possibly they take a link to GitHub, for example, which is a place where people go along a lot of code libraries.
Usually the library is included in a .zip file package. Once y'all've downloaded the .naught file, y'all can go to the Arduino IDE and go to Sketch > Include Library > Add .ZIP library… Yous just have to navigate to where the file was downloaded. It will tell y'all "Library added to your libraries" merely higher up the dark expanse where the original error had appeared.
Now when we become to Sketch > Include Library, the new library volition announced in the drop-down list. Viola! Y'all at present know 2 ways to add a new library.
Review
So we've discussed two possible scenarios that could crusade the "No such file or directory" error to appear afterward you compile your sketch.
Offset, if you wrote the sketch, just double-check your spelling and capitalization.
2nd, if yous have copied lawmaking from someone else, brand certain you take the right libraries installed.
We promise you have a smashing one and we'll come across you adjacent time! Bye!
Source: https://www.programmingelectronics.com/no-such-file-error/
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