Can you comment out lines and have firmware run?
Could it be that your power supply is dropping and browning out?
Hello,
I'm writing a firmware for a board that uses a ATMega 1284. Firmware
continuously restarts and I'm not able to fix this bug. It looks like a
memory corruption, but after several days without finding this bug, I
doubt. Hardware seems to be bug free and runs as expected.
I have uploaded this firmware at
https://hilbert.systella.fr/public/firmware.tar.gz
In this tarball, firmware.elf was compiled with gcc 11.1.0 (and crashes).
I have removed all multitasking capabilities, mutex_* functions don't
nothing. Firmware crashes in lora_send(). There is no memory allocation
(only one malloc() in this code but in function gnss() and this function
is not called). Firmware starts in main(), initialises some chips and
LoRa module (SX1262) and enters in a loop.
simavr gives the same result, but avr-gdb doesn't give usable
information. I have tried to build firmware with gcc 11.1.0 (instead of
5.4.0). Sams result, but avr-gdb now returns "internal error". Thus, I
have built a new avr-gdb (9.2). Problem :
hilbert:[/usr/local/cross/avr/bin] > ./avr-gdb -v
Erreur de segmentation
hilbert:[/usr/local/cross/avr/bin] >
I have tried to bissect, to add debug traces (with some debug traces,
firmware runs as expected !) without result. I have tried -Os and -O2
also. I no longer know how to correct the problem.
Help will be welcome.
Best regards,
JB