Need some help with confusion about flash locations and size (nrf52832 + s132 6.1.1 softdevice)

[Jur]

Hi all,

Currently I am working on my first project with the nrf52832. All is going quite well, but I would really like some help with my flash layout, basically I got some confusion about the following:

Based on this post I figured my flash start position is at 0x26000 which is 155.648 in decimal. Now the nrf52832 which I am using has 256kb of flash memory, does this mean I only have (256 - 155 =) 101kb left for the firmware? My firmware is already bigger than that:

$ du -sh _build/nrfapp.bin
168K	_build/nrfapp.bin

I can flash it without problems and it works fine though. Am I working with wrong numbers?
This is how I would like the flash layout to look:

Content	Start Address	Size (bytes)
Firmware	0x26000	175000
AppData	0x50B98	4096

Could someone help me clear my confusion?

Thanks a lot!

UPDATE: After writing this post I suddenly found a post where people recommended looking at the nRFConnect programmer. I figured my chip actually has 512kb of flash! I would still like to know if my approach is correct. Also, why does it look like this?:

[Turbo J]

Jur said:

does this mean I only have (256 - 155 =) 101kb left for the firmware?

Would be correct if you had the 256KB flash variant (NRF52832_XXAB).The _XXAA variant has 512KB flash.

That is why there are smaller softdevices with less features available - the S132 is "too fat" for some application and chip variants.

I don't use desktop nRFConnect app, thus cannot say anything about the graphics.

[Jur]

Thanks a lot for taking the time to reply! Sounds interesting, I will take a look at the different soft devices aswell, thanks for the suggestion!