Two applications in parallel, freertos

[twittich]

Hello

my setup is a nrf52840, the sdk15.3, Softdevice s140.

is there a possibility, maybe with freertos, to to run two seperate applications like two threads.

In the blinky freertos example are a thread and timer which let leds blink. is this also possible if there there are two seperate blinky apps in the flash, one at 0x26000 and one at 0x50000 which can be handled like two threads by freertos ?

With just jumping to another applications the first is terminated so this is not a solution.

Thanks in advance for any hint....

twittich

[Susheel Nuguru]

The FreeRTOS kernel is compiled into the application, So it would not be possible to have two applications that have two kernels at a different location using the same resources under the hood.

You should be able to design two applications logic into different threads and have a mutual exclusion logic between them to limit CPU access to them.

[twittich]

Susheel Nuguru said:

two applications logic into different threads

This i'm trying already but have some problems with multiple definitions and timers etc...

I'll continue this way ...

Thanks anyway

[Susheel Nuguru]

Good that you already started to implement this way. 

If you have any architectural challenges, please let me know and I will try to help you. Good luck

[twittich]

Susheel Nuguru said:

Good luck

Thanks 

I started to integrate OpenBootloader into blinky freertos.

And there are some multiple definition problems.

one problem is with RTC1_IRQHandler in drv_rtc.c, which is comes from the openbootloader but is also defined/used by freertos. can i change it to another one and if yes how ?

Where can i change this definition APP_TIMER_V2_RTC1_ENABLED also in drv_rtc.c ?

Also multiple definitions of the app timer functions start, create, stop, init, same questions here can i change it anyhow ?

And another problem is that the bootloader settings page will not fit becuase the unplaced section is overflowed by 8192 byte ???

many thanks in advance

twittich

[twittich]

The double defined timer functions in apptimer2 are not used by the blinky freertos so i commented it out without any problems.

[twittich]

twittich said:

unplaced section is overflowed by 8192 byte

<!DOCTYPE Linker_Placement_File>
<Root name="Flash Section Placement">
  <MemorySegment name="FLASH" start="$(FLASH_PH_START)" size="$(FLASH_PH_SIZE)">
    <ProgramSection load="no" name=".reserved_flash" start="$(FLASH_PH_START)" size="$(FLASH_START)-$(FLASH_PH_START)" />
    <ProgramSection alignment="0x100" load="Yes" name=".vectors" start="$(FLASH_START)" />
    <ProgramSection alignment="4" load="Yes" name=".init" />
    <ProgramSection alignment="4" load="Yes" name=".init_rodata" />
    <ProgramSection alignment="4" load="Yes" name=".text" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".crypto_data" inputsections="*(SORT(.crypto_data*))" address_symbol="__start_crypto_data" end_symbol="__stop_crypto_data" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_queue" inputsections="*(.nrf_queue*)" address_symbol="__start_nrf_queue" end_symbol="__stop_nrf_queue" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".dfu_trans" inputsections="*(SORT(.dfu_trans*))" address_symbol="__start_dfu_trans" end_symbol="__stop_dfu_trans" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_const_data" inputsections="*(SORT(.log_const_data*))" address_symbol="__start_log_const_data" end_symbol="__stop_log_const_data" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_balloc" inputsections="*(.nrf_balloc*)" address_symbol="__start_nrf_balloc" end_symbol="__stop_nrf_balloc" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_backends" inputsections="*(SORT(.log_backends*))" address_symbol="__start_log_backends" end_symbol="__stop_log_backends" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections" address_symbol="__start_nrf_sections" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".fs_data"  inputsections="*(.fs_data*)" runin=".fs_data_run"/>
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_dynamic_data"  inputsections="*(SORT(.log_dynamic_data*))" runin=".log_dynamic_data_run"/>
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_filter_data"  inputsections="*(SORT(.log_filter_data*))" runin=".log_filter_data_run"/>
    <ProgramSection alignment="4" load="Yes" name=".dtors" />
    <ProgramSection alignment="4" load="Yes" name=".ctors" />
    <ProgramSection alignment="4" load="Yes" name=".rodata" />
    <ProgramSection alignment="4" load="Yes" name=".ARM.exidx" address_symbol="__exidx_start" end_symbol="__exidx_end" />
    <ProgramSection alignment="4" load="Yes" runin=".fast_run" name=".fast" />
    <ProgramSection alignment="4" load="Yes" runin=".data_run" name=".data" />
    <ProgramSection alignment="4" load="Yes" runin=".tdata_run" name=".tdata" />
  </MemorySegment>
  <MemorySegment name="RAM" start="$(RAM_PH_START)" size="$(RAM_PH_SIZE)">
    <ProgramSection load="no" name=".reserved_ram" start="$(RAM_PH_START)" size="$(RAM_START)-$(RAM_PH_START)" />
    <ProgramSection alignment="0x100" load="No" name=".vectors_ram" start="$(RAM_START)" address_symbol="__app_ram_start__"/>
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections_run" address_symbol="__start_nrf_sections_run" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".fs_data_run" address_symbol="__start_fs_data" end_symbol="__stop_fs_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".log_dynamic_data_run" address_symbol="__start_log_dynamic_data" end_symbol="__stop_log_dynamic_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".log_filter_data_run" address_symbol="__start_log_filter_data" end_symbol="__stop_log_filter_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections_run_end" address_symbol="__end_nrf_sections_run" />
    <ProgramSection alignment="4" load="No" name=".fast_run" />
    <ProgramSection alignment="4" load="No" name=".data_run" />
    <ProgramSection alignment="4" load="No" name=".tdata_run" />
    <ProgramSection alignment="4" load="No" name=".bss" />
    <ProgramSection alignment="4" load="No" name=".tbss" />
    <ProgramSection alignment="4" load="No" name=".non_init" />
    <ProgramSection alignment="4" size="__HEAPSIZE__" load="No" name=".heap" />
    <ProgramSection alignment="8" size="__STACKSIZE__" load="No" place_from_segment_end="Yes" name=".stack"  address_symbol="__StackLimit" end_symbol="__StackTop"/>
    <ProgramSection alignment="8" size="__STACKSIZE_PROCESS__" load="No" name=".stack_process" />
  </MemorySegment>
  <MemorySegment name="bootloader_settings_page" start="0x000FF000" size="0x1000">
    <ProgramSection alignment="4" keep="Yes" load="No" name=".bootloader_settings_page" address_symbol="__start_bootloader_settings_page" end_symbol="__stop_bootloader_settings_page" start = "0x000FF000" size="0x1000" />
  </MemorySegment>
  <MemorySegment name="mbr_params_page" start="0x000FE000" size="0x1000">
    <ProgramSection alignment="4" keep="Yes" load="No" name=".mbr_params_page" address_symbol="__start_mbr_params_page" end_symbol="__stop_mbr_params_page" start = "0x000FE000" size="0x1000" />
  </MemorySegment>
  <MemorySegment name="uicr_bootloader_start_address" start="0x00000FF8" size="0x4">
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".uicr_bootloader_start_address" address_symbol="__start_uicr_bootloader_start_address" end_symbol="__stop_uicr_bootloader_start_address" start = "0x00000FF8" size="0x4" />
  </MemorySegment>
  <MemorySegment name="uicr_mbr_params_page" start="0x00000FFC" size="0x4">
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".uicr_mbr_params_page" address_symbol="__start_uicr_mbr_params_page" end_symbol="__stop_uicr_mbr_params_page" start = "0x00000FFC" size="0x4" />
  </MemorySegment>
</Root>

[Susheel Nuguru]

Does it mean that you do not have enough space in the chip to put them together? If that is the case, it would not work to put them apart either.

[twittich]

There is enough space even to make update over dfu, i'm testing with the blinky freertos. I moved the settingspage to a higher address and compiling works without any errors.

Now the problem is if i call "nrf_bootloader_init(dfu_observer)"  or start a task with this function the other task is not working anymore. The good thing the dfu device is visible in the device manager of windows but the dfu update is not working.

Something in there kills the task or timer of the blink task ?

[Susheel Nuguru]

twittich said:

The good thing the dfu device is visible in the device manager of windows but the dfu update is not working.

 Not sure what is visible in the device manager? What does windows device manager have to do with your problem? 

 

twittich said:

Something in there kills the task or timer of the blink task ?

Nothing kills any tasks unless explicitly done in the application. The other likely thing is that the other tasks probably have higher priority and are not yielding the CPU.