Propose change of RAM settings in softdevice/*/toolchain/armgcc/*.ld to match Softdevice

[Erland Lewin]

For example, in SDK11, the file:

components/softdevice/s130/toolchain/armgcc/armgcc_s130_nrf51822_xxaa.ld

Contains:

  RAM (rwx) :  ORIGIN = 0x20000000, LENGTH = 0x4000

However, as I understand it, no program can possibly run with Softdevice S130 with these settings, because the softdevice needs the first 0x2000, or possibly 0x1eb0 bytes of RAM. The correct settings would be something like:

  RAM (rwx) :  ORIGIN = 0x20001eb0, LENGTH = 0x2150

or

  RAM (rwx) :  ORIGIN = 0x20002000, LENGTH = 0x2000

As the .ld-file is under the s130 section, I had expected it to be adapted to the requirements of that softdevice. I spent many hours trying different settings before i figured out that this was what caused the initialization of the softdevice to fail (without any clear error code).

Note also that the FLASH settings adapt the starting address to be after the softdevice.

I think it would be much less confusing if you adapted the .ld files in the components/softdevice//toolchain/armgcc directories to match the requirements of the softdevice.

Especially so since your example code doesn't support the 51822 out of the box (it would be nice if it did).

[Susheel Nuguru]

You are right, This is a bug. Since the files reside inside softdevice folders, it is correct to expect that their contents match to be use with the version of softdevice that is given in the hex folders. I have created a ticket For your reference internal ticket number is NRFFOETT-1367

I am adding this to the LIST

[Krzysztof Chruscinski]

It has been fixed in nRF5 SDK 12.2.0.