Hello.
Configuration:
- operating system = Linux Ubuntu 20.04
- JLink software Debian package v8.38 (64 bits)
- JLinkExe = SEGGER J-Link Commander V8.38 (Compiled May 28 2025 12:46:55)
- device = J-Link Base (running J-Link V11 compiled Apr 1 2025 10:02:30)
It looks like the "JLinkExe" binary is not able to read command input encoded in UTF-8.
I need to load a .hex file named for example "file_with_utf8_é.hex".
Note the "é" letter in the file name, which is very common in my language.
Running JLinkExe, when I manually try to type on my keyboard the command "loadfile file_with_utf8_é.hex"
I can not enter the "é" letter (my key stroke is just ignored by JLinkExe), and therefore I can not enter the correct file name.
I have a dedicated "é" key on my keyboard, and pressing that key is ignored by JLinkExe.
Actually this issue was discovered when using a bash shell script used by our factory to automatize loading first firmware to MCU embedded flash.
The .hex file name is generated and may have UTF-8 letters in its name.
So it's not possible for us to simply avoid such letters.
For your information, here is this bash script :
#!/usr/bin/env bash
{ echo "si SWD" ; \
echo "JTAGConf -1,-1" ; \
echo "speed auto" ; \
echo "device STM32U535CE" ; \
echo "con" ; \
echo "r" ; \
echo "h" ; \
echo "loadfile $1" ; \
echo "r" ; \
echo "qc" ; \
} | JLinkExe -NoGui 1
If I run this script with "./flash.sh file_with_utf8_é.hex", then JLinkExe shows "Downloading file [file_with_utf8_.hex]..." (note the missing "é" letter) and fails with error "Failed to open file".
If I rename the file to "file_with_no_utf8.hex"' and run "./flash.sh file_with_no_utf8.hex", then no error occurs.