Notices by Mäh W. (maehw@chaos.social)

@whitequark do you think it has been manually coded (C code?) and runs bare metal? Seeing the bootloader approach let's me guess that they may also have used STM32 HAL/LL code. Or aren't there any other peripherals than the GPS/navigation module? Generated code for math stuff?

@whitequark Nice find. And the Bootloader might be logging to a UART. At least two UARTs are initialized there and it's using `printf` calls.

@whitequark Reset vector should be at 0x08001639 then. BTW your binary file name might have a typo as it's a STM32H743 and not a STM32H723?

@whitequark So far, I've only used off-the-shelf SWD probes, i.e. ST-Link and J-Link which hide most technical stuff behind the scenes -- probably unless you toggle some verbosity switch(es). What are you trying to accomplish here?

@whitequark it will be readout protected, right? Will you need to apply some fault injection or something? Or does it have an external(Q)SPI flash? The internal flash is quite large in that thingie.

Today's #Linux pita: I generated a PDF file which links to local MP4 files. So clicking links in the PDF viewer (evince) should open a video player.. and play them. According to my "research" #AppArmor seems to be blocking this. Never heard about it before. Tried to add `/usr/bin/totem` as a line `/usr/bin/totem ixr,` to `/etc/apparmor.d/usr.bin.evince`.. but this breaks it: `profile /usr/bin/evince: has merged rule /usr/bin/totem with conflicting x modifiers`- Why? Can anyone help here please?

@slothrop thanks but the credits for the design go to "the designer dream team of Euler Void and Robokid // Luis F. Masallera" (https://events.ccc.de/congress/2024/infos/styleguide.html). I am only some random guy trying to get this on a piece of fabric using an old embroidery machine and some tinkering. 😄

Another attempt in using #InkStitch. This time the idea was to create my own #38C3 T-shirt - with glow-in-the-dark thread. However, I am not too happy with the end result as I've made several mistakes. A learning experience for me. 🧵
#embroidery #merch