Inclusion of ~110kb uncompressed / ~15kb compressed binary blob in DFU image ?

RE: Inclusion of ~110kb uncompressed / ~15kb compressed binary blob in DFU image ?

Scott — Thu, 20 Aug 2020 00:28:26 GMT

Got it working / thanks !

RE: Inclusion of ~110kb uncompressed / ~15kb compressed binary blob in DFU image ?

Scott — Wed, 19 Aug 2020 21:55:30 GMT

Is there an example linker script to show me how to do that ?

RE: Inclusion of ~110kb uncompressed / ~15kb compressed binary blob in DFU image ?

Turbo J — Wed, 19 Aug 2020 21:15:49 GMT

Nope, ".rodata" section is flash.

RE: Inclusion of ~110kb uncompressed / ~15kb compressed binary blob in DFU image ?

Scott — Wed, 19 Aug 2020 20:45:26 GMT

As far as I can tell that just puts it into the RAM section‥

RE: Inclusion of ~110kb uncompressed / ~15kb compressed binary blob in DFU image ?

Scott — Wed, 19 Aug 2020 19:27:05 GMT

Ah if we store it like that then it will be stored in FLASH not the RAM space ? Didn't realise that thanks

RE: Inclusion of ~110kb uncompressed / ~15kb compressed binary blob in DFU image ?

Turbo J — Wed, 19 Aug 2020 15:39:04 GMT

The nRF52832 has not enough RAM to handle zlib uncompression AFAIK. Only the NRF52840 would have enough RAM - but it would also have enough flash to store uncompressed.

If you had enough free flash available in your application space, you can store the image data in flash memory.

One simple way to convert the data is to use "xxd":

xxd -i <data.bin >data.bin.h

And then just include the .h file:

const uint8_t binary_data[] = {
#include "data.bin.h"
};