espflash monitor takes over the terminal

[cacharle]

It happens often that I cannot kill espflash monitor with Ctrl-C or Ctrl-\ and the logs stop coming aswell. I'm not sure if my code crashed or if it's the connection to the device but it would be nice to have some error message or at least be able to kill the process instead of having to relaunch my terminal.

I use alacritty as a terminal btw:

❯ alacritty --version
alacritty 0.13.2 (bb8ea18e)

❯ espflash --version
espflash 3.1.0

[SergioGasquez]

Seems similar to #464, I do use the same allacritty version on Linux and I don't recall encountering this issue.

[cacharle]

My colleagues and I have observed that behavior across different terminals (Windows terminal, ubuntu's terminal, alacritty) and different machines with different OSes (Linux, Windows)

I really seems independent of the platform you're running on

[cacharle]

Similar behavior when it cannot find a usb:

$ espflash monitor --log-format defmt --elf <elf>
[2024-10-04T15:20:49Z INFO ] 🚀 A new version of espflash is available: v3.1.1
[2024-10-04T15:20:49Z INFO ] Detected 3 serial ports
[2024-10-04T15:20:49Z INFO ] Ports which match a known common dev board are highlighted
[2024-10-04T15:20:49Z INFO ] Please select a port
[2024-10-04T15:20:49Z INFO ] Serial port: '/dev/ttyACM0'
[2024-10-04T15:20:49Z INFO ] Connecting...
r^C^C^C^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^\^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^Z^Z^Z^Z

[cacharle]

This bug is the bane of my existence, any clue where I could start looking for it in the espflash codebase?

[SergioGasquez]

I don't have many pointers, but here is where we wait for the Ctrl+C press: https://github.com/esp-rs/espflash/blob/main/espflash/src/cli/monitor/mod.rs#L118-L131. Might be related to the lib we use to process them (crossterm), we have an “outdated” version since new version were causing some issues on Windows, https://github.com/esp-rs/espflash/blob/main/espflash/Cargo.toml#L36

[dbrgn]

I'm also experiencing this bug. Sometimes I after running espflash flash --baud 2000000 --monitor I cannot abort the process with Ctrl+C and no log output updates are shown (but the device works as intended).

Something I noticed is that if I reset the microcontroller using the reset button, all the "missing output" suddenly shows up, followed by × Broken pipe.

[dbrgn]

Oh, I can trigger the issue if I simply type a few characters with focussed terminal while logging is happening (e.g. "asdf" in quick succession). If I do that, the terminal output freezes and ctrl+c doesn't work anymore either.

[jessebraham]

Based on some limited testing, this seems to be an issue exclusive to USB-Serial-JTAG, as I was able to reproduce the problem when using this interface but not when using UART. Does this match other peoples' experience? This at least gives us a bit more direction if it is indeed the case for everybody else.