Hello,
I am developping on a firmware using a bootloader which verifies main application's CRC prior to let it start. To do this, I am generating an extra .hex file with data for bootloader added to the .hex file created by Keil.
I thought I just had to rename my .hex file with data to the name of the one generated by keil... But Keil's debugger is loading the .axf file, not the .hex one :-(
The only workaround I found was to load my .hex with data with another flash programmer, and then start debugging with Keil to have debug symbols.
Does anyone know how I could do this directly with Keil ?
Thanks a lot in advance!
If this is purely for debug, consider having your firmware understand this is the case via a magic value in RAM or the vector table, so it can skip the signing/checksum test for debugging. Perhaps probe the ITM/DWT registers to understand it is running via a debugger.
The script may be able to LOAD two images (.AXF). I've not needed the symbols for both (loader/app) in order to run them and understand what's happening in the debugger, but if I did, I'd merge the .ELF/AXF files and the symbol tables.
You could also you the INCREMENTAL option with the LOAD debug command to load more than one hex file at once, without needing to merge / rerun a CRC on the result
This is what I am doing, but loading of my first .hex file (the one containing application's CRC) fails with keil's debugger, although I have no problem while loading it with STM32CubeProgrammer.
I am getting the error "target memory verification failure", followed by "error 57: illegal address (0x800C000). (Note: 0x800C000 is my application's starting point)
Other strange thing: if I first load my .hex with STM32CubeProgrammer, and then start a debug session with Keil, I get no error.