Simple FreeRTOS example with softdevice doesn't work

[himanshu pande]

I have created a simple program with 4 FreeRTOS threads(One time, 10 ms, 100 ms, 1000 ms) and it works fine stand alone giving me periodic tasks as expected.

Linker portion for working example:

MEMORY { FLASH (rx) : ORIGIN = 0x0, LENGTH = 0x80000 RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000 }

But this same example doesn't work at all when I use S132 softdevice.

Firstly, if I flash my hex file as it is after softdevice is flashed, I get error of being not able to write to the memory. So in my application, I try a small change with linker

MEMORY { FLASH (rx) : ORIGIN = 0x1f000, LENGTH = 0x61000 RAM (rwx) : ORIGIN = 0x20002128, LENGTH = 0xded8 } which allows me to flash my application when softdevice is also existing on the chip.

I have tried the following solutions already but they don't work for me:

devzone.nordicsemi.com/.../

devzone.nordicsemi.com/.../

What exactly is the problem of using FreeRTOS and softdevice together?

[Susheel Nuguru]

That is too much to allocate 16kb of heap along with softdevice . Why do you need so much? Are you working with nrf52? On nrf 51 you might not even that much free RAM on some chip versions

[himanshu pande]

I modified heap size to 4k. It still is the same.The code works when placed at 0x00000 and doesn't when placed at 0x1f000.

Debug snapshot: Thread #1 (Suspended : Signal : SIGTRAP:Trace/breakpoint trap) 0xfffffffe () at 0xfffffff9 0x0

[Susheel Nuguru]

Please upload you project. I could not reproduce this error by using your test_code. c file. The problem must be somewhere else

[himanshu pande]

Is there a working example of Softdevice + FreeRTOS on gcc? Maybe I can try to run that and then try to compare my project with this reference project? Could you upload such an example that can be imported and tested in eclipse?