Hi, I wrote an application in a 8051 device containing several modules. One of them needs some certification and after that it can no longer be modified. To ensure this a CRC is computed on the firmware file.
The problem is that after certificates the other modules need to be modified and this will affect the firmware CRC even if I didn't modify the certified module.
The solution would be to somehow isolate the certified module in a separate firmware file and the just load both files into the device.
Is there any way to do this?
The CODE keyword would generate a COD file, but all code would still be mixed up inside right? I'm probably missing something because I don't understand how this would help me.
http://www.keil.com/support/man/docs/bl51/bl51_code.ht
"The absolute memory location of individual CODE segments"
Erik
http://www.keil.com/support/man/docs/bl51/bl51_code.htm
Erik, I did read the manual, but I'm actually using LX51 instead of BL51 because I'm using a bigger ROM size than 64KB. The definition of the CODE keyword seems to be completely different. http://www.keil.com/support/man/docs/lx51/lx51_code.htm
Can something like the BL51 definition be done in LX51? If not this option can be ruled out.
I noticed that using Code banking I can generate different firmware files, but I'd rather stay away from this option if something simpler can be done.
I apologize if I'm asking stupid questions, I'm quite a newbie in regards to this stuff.