Flashing HP15CE with linux

[Sylvain Cote]

I have tried several things last night, all unsuccessful, they all stuck at the read instruction

Notes:

• sam-ba v2 was made in the 32-bit era (last release 2.18 was in 2017)
• sam-ba v3 series does not support the 15CE CPU anymore.
• installed several minor versions of sam-ba v2 series (2.15 to 2.18)
• everything was tested on Ubuntu 22.04.5 64-bit bare-metal and on Ubuntu 16.04.6 32-bit in a VM.
• sam-ba (or sam-ba_64) was run under $(whoami) and under root with sudo
• sam-ba (or sam-ba_64) was run directly, with strace and with ltrace
• $(whoami) and root was added to the dialout group to match /dev/ttyACM0 access root:dialout
• at some point I changed the /dev/ttyACM0 access to $(whoami):dialout
• created a softlink /dev/ttyUSB0 to point to /dev/ttyACM0 (just in case the code was looking for ttyUSB something)
• dmesg confirmed that the /dev/ttyACM0 driver from Atmel was loaded correctly