bootloader with gcc too large

RE: bootloader with gcc too large

aep — Wed, 16 Mar 2016 11:21:14 GMT

-flto made it small enough for me. (its still not working, so not sure if flto is a good thing to do)

RE: bootloader with gcc too large

Dave_couling — Tue, 15 Mar 2016 17:20:53 GMT

It sounds like you are compiling under DEBUG. You can account for this by offsetting the start of the Bootloader section when you compile under DEBUG. I set it to 0x32000 when I'm debugging, then to 0x35000 under release.

RE: bootloader with gcc too large

ioannis — Tue, 15 Mar 2016 15:31:33 GMT

It doesn't fit for me too, try increasing the space allocated for the bootloader in your linker script. origin, length and also in dfu_types.h in libraries/dfu_bootloader It has been answered before.

What I think is the cause, is the newer gcc version. 4.9 for example outputs a smaller binary than 5.2. If you don't want to change the size in the linker, stick with an older version.

RE: bootloader with gcc too large

RK — Tue, 15 Mar 2016 07:08:40 GMT

What optimisation level did you compile it with? I use -Os and it fits in the space allocated, compiled with anything less than that, it doesn't.