Arduino IDE: Source code not visible in editor

Development Tools IDE 1.x
1

I am using the Arduino IDE for many years without any problems and made 3 IOTs for garding my heatpomp.
Yesterday all worked OK, this morning the source files did not show in the editor window of the IDE.
Removed the Arduino15 map in the AppData, reïnstalled JAVA and reïnstalled the IDE.
after starting the IDE the editor does not show the new file lines setup() and loop().
Loading a project via the Files Menu changes the caption of the IDE to the requested ino file.
The black toolbar with the compile and uplaod icons does not show.
The green source tab remains empty ( should 2 tabs the ino file and one .h).
The source is not loaded in the editor window because the editor bottom line count remains 1.

I have copied the same source directory to my laptop and that works as expected.

I hope someone has a solution for this problem!

This is how the IDE looks like now:

IDE
IDE614×691 32.7 KB

2

If you click in the programming window and press "down arrow" does the line count increase?

If you "click" in the programming window and press CTRL-A (to highlight all text), to you see the sketch that is loaded?

[edit]
Also... check "file >> save as" and see where it wants to save the sketch. Maybe a path got messed up?

And... check your launcher for the IDE... maybe a residual .EXE was left behind and Windows did a "did you mean" launch of an old .EXE?
[/edit]

3

Thete is a setting in file -> preferences to use an external editor. Maybe that's selected by accident.

4

Thanks for your thoughts, but
The line count dows not increase when I press down arrow
CTRL A does not show the text
'Save as' saves the files in the new 'save as' dir as it should happen
Everything has been deleted and re-installed, so no resduals possible
Open for any suggestion

5

editor.external == false so no external editor

6

A "save as" should try to save in the "sketches" directory.

Did a folder in the life of arduino-install ever get moved?

7

yes, as usual. got the same source files in the new directory

8

I enlarged the window and got the normal IDE layout.

IDE2
IDE21374×1220 94 KB

The source files are loaded, compiler OK, and an eventual error will be indicated.
The compiler output window is empty after compilation.
Cursor down will change the bottom line count to the next line.
The editor window displays all lines which have red colored words.
The editor line size is the size between the 2 visible words 'IPAddress' (the size of about 30 lines).
All text displayed by the IDE in black is not visible.
I can use an external editor and use the IDE as compiler, but I am used to Arduino IDE.

I hope some has a solution.

9

Hi @addek. It might be considered more a "workaround" than a "solution", but I suggest you try the Arduino IDE 2.x. Since the latest 2.0.0-rc9.1 release has a bug that affects uploading, you should use the latest nightly build from the links listed here:

https://www.arduino.cc/en/software/#nightly-builds

Since this version of the IDE is in a "release candidate" phase, it is possible it will come with its own new problems. However, I think most are finding it to be in a usable state at this point. I guess you can't say the same for how Arduino IDE 1.x is working for you currently. Since Arduino IDE 2.x is a complete rewrite of the Arduino IDE, it is unlikely that an issue like this would affect both versions of the IDE.

Arduino is dedicating a lot of resources to the Arduino IDE 2.x development right now, so any problems you do report are more likely to be addressed quickly, and your feedback will help to ensure the quality of a tool that will surely be a cornerstone of the Arduino project in the decades to come.

10

The arduino IDE 2 does not run at all on my system.
I solved the problem in the IDE editor, by changing the editor font from Monaspced to Courier in the preference.txt file, bu the serial Monitor har still the wrong Font. It is not bothered by the settings in the preference file.
I didi not find the solution to change the font in the Serial Monitor.
Any idea how to do that?

11

I'm sorry to hear that. If you ever want to try to get it working, feel free to post a topic here on the forum with the details and I'll take a look.

Nice work!

Unfortunately, I am not aware of a way to do that.

Someone requested the feature be added to the Arduino IDE a couple years back here:

You might be better off to investigate why your default monospaced font is causing this problem. If you fix that, it should fix the Serial Monitor without needing to change the font at all.