Each day a new problem :-(

bastler59 · December 21, 2021, 10:46am

Hi,

I have ONE board Adafruit Feather M0 connected to my computer, only O-N-E . And it is connected to COM11.

Some minutes before, Arduino IDE 2.0rc decides to see the board also at COM1.

I can switch to COM11, but each time I open Serial Monitor it switches back to COM1. If I switch to COM11 and push reset button of the board ... yes, it switches back to COM1. No way to see output.

IDE2-COMport

To all programmers of IDE: I can understand, that it is difficult to build a large program, but this is not a release candidate.

I will now uninstall this software. May be I try a version 2.1 or 2.2, but for the moment it is wasting my time and makes me angry.

Bye
Jürgen

ptillisch · December 21, 2021, 2:40pm

Hi @bastler59. I'm sorry for the trouble with the Arduino IDE 2.x release candidate.

I have experienced something similar to this, and submitted a report for the problem I had to the developers here:

github.com/arduino/arduino-ide

Port changes on native USB upload when two ports are associated with the selected board name

opened 02:10PM - 21 Dec 21 UTC

closed 10:31AM - 24 Aug 22 UTC

per1234

conclusion: resolved topic: code type: imperfection

## Describe the bug Some Arduino boards have native USB capability which allo…ws the primary microcontroller to produce a CDC serial port over which sketches are uploaded. The upload process for these boards goes like so: 1. Arduino IDE signals the board to run the bootloader. 1. Sketch program stops, which kills the CDC serial port it produces. 1. Bootloader program starts, which produces another CDC serial port. 1. Upload happens. 1. Bootloader program stops, which kills the CDC serial port it produces. 1. Sketch program starts, which produces another CDC serial port. During this process, the port disappears and reappears. This causes the IDE to select the wrong port if any other ports have been associated with the currently selected board name . The obvious way that multiple ports might be associated with the same board name is having multiple boards of the same model connected to your computer. However, it occurs even with a single board simply by selecting the wrong port once. ## To Reproduce You will need: - Arduino board with native USB capability (e.g., Leonardo, MKR, Nano 33 BLE) - An additional serial port on your computer. This could be an internal built-in port (i.e., COM1), a spare Arduino board connected to your computer, or any other device that produces a port (e.g., FTDI adapter). 1. Select the additional serial port from the **Tools > Port** menu in the Arduino IDE. 1. Select your native USB board from the **Tools > Board** menu in the Arduino IDE. You have now associated the selected port with this board name. 1. Select the real port of your native USB board from the **Tools > Port** menu in the Arduino IDE. 1. Select **Sketch > Upload** from the Arduino IDE menus. :bug: The port selection will now switch to the port that was selected in step (1). **Note:** The above instructions use **Tools > ...** menu paths for the sake of clarity. The issue also occurs when using the board/port selection dropdown menu and the "**Select other board and port...**" dialog. ## Expected behavior Retain the port I selected. ## Desktop - OS: Windows 10 - Version: 2.0.0-rc2-snapshot.c064673 Date: 2021-12-15T09:32:43.552Z CLI Version: 0.20.2 [13783819] ## Additional context The tried and true established approach used by the classic Arduino IDE handles this just fine. So its behavior can serve as a reference for the solution. --- There are several other issues related to the IDE not correctly handling the port selection: - https://github.com/arduino/arduino-ide/issues/43 - https://github.com/arduino/arduino-ide/issues/82 - https://github.com/arduino/arduino-ide/issues/180 - https://github.com/arduino/arduino-ide/issues/287 --- The issue also occurs on pressing the reset button instead of doing a full upload. --- Originally reported at https://forum.arduino.cc/t/each-day-a-new-problem/937997 Also reported at: - https://forum.arduino.cc/t/port-keeps-switching-after-upload/1024611

That report also contains links to other problems related to the automated port selection behavior.

I didn't manage to reproduce the issue you reported of the Serial Monitor causing the port change though. I don't own an Adafruit Feather M0 so there may be some special property to that board that causes it to reset when the Serial Monitor is opened, and I do know that any reset will trigger this port change.

There are two possible causes of this issue in general:

You have multiple of the same board connected to your computer (I realize this isn't the case for you @bastler59)
You only have one board, but the Arduino IDE has associated it with multiple ports.

In case it will be of use to anyone experiencing this problem, I'll share workarounds.

The former cause will probably only be possible to work around by disconnecting one board.

The latter cause can be worked around by disassociating the board from the port:

Select the unwanted port (in this case, COM1) from the Tools > Port menu in the Arduino IDE.
Select any other board from the Tools > Board menu in the Arduino IDE.

Doing this removes the association between that port and the board you are using so that the problematic automatic selection will no longer occur.

bastler59 · December 28, 2021, 4:24pm

For the moment, it is working with a Arduino UNO at COM1.

Some other things:

Strg+Shift+M should open serial monitor? Not on my computer, I have to open it by the menu.
I set serial monitor to "both NL&CR". But when I mark some lines and copy them to Notepad++ it is all in one long line.

Jürgen

ptillisch · December 28, 2021, 4:42pm

It works fine for me. From "Strg", I am guessing you have a German keyboard layout? I wonder if that is relevant.

Have you made any changes to the "Toggle Serial Monitor View" setting in File > Advanced > Keyboard Shortcuts?

The line ending menu in Serial Monitor controls the line endings that are added to the text you send via the input field. It does not affect the line endings in the output field. You should get the same line endings there no matter what the input line ending setting.

I suspect that this is one of the things that will be resolved automatically by the planned complete reworking of the Serial Monitor, as described here:

github.com/arduino/arduino-ide

Replace the serial monitor view with a monaco editor

opened 11:02AM - 28 Jul 20 UTC

kittaakos

type: enhancement topic: code topic: serial monitor

**Is your feature request related to a problem? Please describe.** A clear and …concise description of what the problem is. Ex. I'm always frustrated when [...] `monaco-editor`: https://github.com/Microsoft/monaco-editor This is exactly the same task we did for the _Output_ view in Theia: https://github.com/eclipse-theia/theia/pull/7570 - It should improve performance in general as the underlying content is wrapped into a `monaco.editor.ITextModel`. The logic that handles the UI update would be exactly the same as in VS Code; it's not that bad 😄 - It should align the look and feel all over the application. - We get copy/paste/find/select-all for the _Serial Monitor_ for free. **Describe the solution you'd like** A clear and concise description of what you want to happen. **Describe alternatives you've considered** A clear and concise description of any alternative solutions or features you've considered. **Additional context** Add any other context or screenshots about the feature request here.

but you are welcome to submit a dedicated formal bug report about it on the issue tracker. I already checked for an existing one and didn't find anything relevant.

The current Serial Monitor must be using some odd encoding because I do get line breaks when I paste the data here in a forum reply, only I get doublespaced output!

There are other reports of this annoying bug here:

bastler59 · December 29, 2021, 7:18am

Hi,

letter "M" is on the same place in german and english keyboard. Hmm ... crazy ... just in the moment combination Strg+Shift+M is working.

Another question:
Is there a maximum capacity of bytes that serial monitor can handle? May be about 30 kBytes?
I have a sketch using interrupt. Interrupt comes from a RTC every minute. Then sketch reads sensor values and writes something to serial monitor. There is no variable counting up, so no overflow should occur. After 3,5 hours sketch stopped, IDE shows a "not connected". I tried it 2 times. Then I changed sketch, so it is writing less output. Sketch stopped after 8 hours.
[addendum]
Writing on a sd-card doesn't solve the problem. It must be another problem with interrupt.

Jürgen

ptillisch · December 29, 2021, 11:32am

Please let us know if you run into the problem again, especially if you can discover the specific conditions that cause the issue.

I haven't been able to reproduce it.

Does it occur for you with a minimal sketch like this?

unsigned long x;
void setup() {
  Serial.begin(115200);
  while (!Serial) {}
}
void loop() {
  Serial.println(x++);
}

That should exceed your hypothesized 30 kB limit very quickly, yet I have been running it for hours without any problems.

bastler59 · December 31, 2021, 7:04am

First I thought, there is a correlation between crashed sketch and serial monitor of IDE. But if I write data only to SD-card, sketch also crashes.

I think it is my mistake, that I placed all code inside ISR. 60 seconds are a long timespam, so no need to keep ISR-code short and fast. delay() is not working inside ISR and each sensor library uses it, because sensor needs time to put values into registers. In one case I could solve this problem by code stretching command. But I'm afraid there are other libraries using delay(). For some hours sketch may run without a problem and then timing is slightly different and sketch crashes.

Now I have code back in loop() and sketch is running for more than 40 hours.

Jürgen

ptillisch · December 31, 2021, 7:32am

I'm glad to hear this!

ptillisch · December 31, 2021, 7:53am

I went ahead and submitted a report about this:

github.com/arduino/arduino-ide

Text copied from from Serial Monitor has missing line endings

opened 07:40AM - 31 Dec 21 UTC

closed 12:14AM - 22 Jun 22 UTC

per1234

conclusion: resolved topic: code type: imperfection topic: serial monitor

## Describe the bug It is sometimes useful to copy the text that was printed …by an Arduino board to Serial Monitor. For example, I sometimes copy CSV-style data into a spreadsheet program when I want to do further manipulation and analysis. :bug: This is currently not possible to do with any multi-line text because the copied content has missing (or perhaps non-standard) line endings. ## To Reproduce 1. Upload a sketch that prints multiple lines of text to serial: ```cpp void setup() { Serial.begin(9600); } void loop() { Serial.println("hello"); delay(1000); } ``` 1. Open the Serial Monitor view in the Arduino IDE (**Tools > Serial Monitor**). 1. Select multiple lines of the text that was printed in the Serial Monitor view. 1. Paste it into a text editor or spreadsheet program. :bug: The line endings are not present: ``` hellohellohello ``` ## Expected behavior Text copied from Serial Monitor has standard line endings. ## Arduino IDE version 2.0.0-rc3 ## Operating system Windows, Linux ## Operating system version Windows 10, Ubuntu 20.04 ## Additional context After copying the following Serial Monitor output: ```text a a a ``` This command reveals that there are no line endings: ```text $ xclip -selection clipboard -out | xxd -p 616161 ``` --- I'm not sure why, but I do get line breaks when I paste the text to the Arduino Forum (Discourse) composer field. In that case, the problem is opposite because I get double spaced text. But when pasting to VS Code, Notepad++, LibreOffice Calc, GitHub comment field, etc., even a fenced code block on the forum, I get no line breaks. --- Related: - https://github.com/arduino/arduino-ide/issues/105 --- Originally reported at: - https://forum.arduino.cc/t/serial-monitor/698844 - https://forum.arduino.cc/t/serial-monitor-text-copying-not-quite-right/938730 - https://forum.arduino.cc/t/each-day-a-new-problem/937997/3 - https://github.com/arduino/arduino-ide/issues/427#issuecomment-885018751 - https://forum.arduino.cc/t/text-selection-serial-monitor/1005262

system · June 29, 2022, 7:54am

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.

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Each day a new problem :-(

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