example code that uses cortex M4F with FPU enabled on RTX

[Francis]

Been having a bit of trouble porting our nRF51 project to nRF52 SDK11. It seems to not like using hal_cm4.c from RTX_CM4.lib with FPU. Seems to get stuck on OS_Tick_Handler. However, when I replace it with RTX_CM3.lib and disable FPU, it seems to work.

Is there a reference example that also uses CORTEX_M4F define with FPU and RTX_CM4.lib? I can't seem to find any in SDK11, 12, 13. I just see blinky_rtx use RTX_CM3.lib. Or a guide on how to setup and configure nRF52 on Keil for RTX and Cortex_M4F with FPU enabled would be helpful.

What I have defined in compiler: __CORTEX_M4F RTX S132 __CMSIS_RTOS NRF52 BLE_STACK_SUPPORT_REQD

[Jørgen Holmefjord]

Hi,

Unfortunately, I'm not aware of any other examples than the one in the SDK.

Please see this answer, and try out the suggested solutions in the link (change the defines to your board and additional needed defines).

Best regards,

Jørgen

[Jørgen Holmefjord]

As described in this answer, RTX is not stable with softdevice on nRF52. The support for nRF52 have been removed completely from the latest SDK, and I don't know if it will be added back at a later time. I think the main focus have been directed towards extending the FreeRTOS support. I'm sorry about this inconvenience.