jrobsonchase
New member
It seems that I've somehow managed to kill two Teensy-LC's using bad firmware (which I believed was impossible).
The code in question is in the following projects:
https://gitlab.com/jrobsonchase/blink
https://gitlab.com/jrobsonchase/teensy-lc (develop branch)
https://gitlab.com/jrobsonchase/mkl26z4 (develop branch)
Everything can be built by cloning all three into the same directory, checking out the proper branches, and then running "make" in the blink project. You'll need the rust toolchain installed along with its thumbv6-none-eabi target.
From what I can tell, I messed up the linker script by ignoring the flashconfig section, and whatever garbage got put there messed *something* up. Everything seemed to work before the addition of the
at the end of blink/src/main.rs.
Now, I can't seem to get my board to go into bootloader mode. Nothing shows up in dmesg when I plug it in, press the button, or hold the button, plug it in, release the button.
At first, I thought that maybe I killed the board in some other manner, such as by shorting something I shouldn't have, so naturally, I tried flashing my second teensy-lc just to see what would happen. I now have two dead teensys
Edit:
I just came across this thread: https://forum.pjrc.com/threads/52404-Preperatory-Questions-regarding-FSEC-Security-Configuration
Is it possible that I've managed to brick my board in the manner described?
The code in question is in the following projects:
https://gitlab.com/jrobsonchase/blink
https://gitlab.com/jrobsonchase/teensy-lc (develop branch)
https://gitlab.com/jrobsonchase/mkl26z4 (develop branch)
Everything can be built by cloning all three into the same directory, checking out the proper branches, and then running "make" in the blink project. You'll need the rust toolchain installed along with its thumbv6-none-eabi target.
From what I can tell, I messed up the linker script by ignoring the flashconfig section, and whatever garbage got put there messed *something* up. Everything seemed to work before the addition of the
Code:
#[exception] fn DefaultHandler ...at the end of blink/src/main.rs.
Now, I can't seem to get my board to go into bootloader mode. Nothing shows up in dmesg when I plug it in, press the button, or hold the button, plug it in, release the button.
At first, I thought that maybe I killed the board in some other manner, such as by shorting something I shouldn't have, so naturally, I tried flashing my second teensy-lc just to see what would happen. I now have two dead teensys
Edit:
I just came across this thread: https://forum.pjrc.com/threads/52404-Preperatory-Questions-regarding-FSEC-Security-Configuration
Is it possible that I've managed to brick my board in the manner described?
Last edited: