I researched a lot of pages… and I didn’t find the answer :C
A fatal error occurred: Failed to connect to ESP8266: Timed out waiting for packet header
why? (ubuntu 20.04, vscode) same problem on arduino ide…
Does your board have a button that you have to press to get it into uploading mode? Apparently, and I’m no expert, some esp8266 boards need a button to be pressed to initiate uploads.
Cheers,
Norm.
I tried to push button when uploading, did not work… (flash button)
Download and open a serial monitor program like hterm at 74880 baud on the USB-serial adapter of your board. Hold down the FLASH button, press the RESET / EN button once (while FLASH is being held down), then release FLASH. What’s the serial output?
Well, that’s bad… Reminds me of "Timed out waiting for packet header" on kernel 5.13.10 (only for CH340 + ESP8266) [fixed in kernels 5.14 & 5.13.14] (ESPTOOL-291) · Issue #653 · espressif/esptool · GitHub. What’s your kernel version? (uname -r)
5.13.0-28-generic
It’s weird, beacuse that stopped working for no reason.
What’s the USB-to-serial converter chip on the board? A CH340 or a CP2102?
When you do sudo apt update && sudo apt dist-upgrade, are there updates to the Linux kernel available?
It’s CH340 and no kernel updates are available
Does it work on other computers? (Windows or Linux with a different kernel)
I have no way to check it (everything is same on other esp8266 board, same nodemcu)
Please install esptool globally (Esptool.py Documentation - ESP32 - — esptool.py latest documentation) and run esptool -p PORT flash_id where PORT is your serial port, e.g., /dev/ttyUSB0. If it does not work, open an issue at GitHub - espressif/esptool: Espressif SoC serial bootloader utility, as this is beyond PlatformIO then.
For what it’s worth I’ve had similar issues on Windows when another process (i.e. a second instance of the development tool or a terminal in another console) had control of the serial port. In those cases the ‘failure to connect’ was because the port was already in use.
