nrf toolbox dfu max file size

[Andreas_Wickström]

Hi I have a problem when bootloading with nrf toolbox. It seems like when i flash files over 0x10000 in size the program overwrites itself. When i flash files with smaller size it works. I compile my program with gcc and use nrfutil to make a .zip file to download.

[John]

I don't have any idea what your problem may be, but I can't help but think that the fact that you are crossing the 64K boundary has to be significant. Just guessing though.

[Andreas_Wickström]

Yes I also think that it has with some 64K boundary to to. Could it be something with how the program is generated in GCC if it uses extended adress range or not. In my case it does not use extended mode. I dont know how to change it. Maybe i should see if i can generate a program that uses exteded adressing in the hex file?

[John]

Its been a while since I used GCC, but if you say its not using extended mode does that mean it won't generate the extended linear address record in the hex file then that is your problem. Without those you can't address above 64K in the hex file. Wikipedia has a good page on the Intel hex format.

[Andreas_Wickström]

Yes i have read some more about it now but i cant find a solution for it. I might have to write some own program that converts from ihex16 to ihex32.

[Andreas_Wickström]

I seem to have solved the problem with the dfu. Atleast I think. It seems that we have a type error in the dfu. i changed the typedef uint32_t pstorage_size_t;

to uint32_t from uint16_t. It seemed like the it wraped around and that was why i got some wiered errors when i flashed my file. The nrf toolbox can then handle ihex 16 files