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

[Francis]

Thanks for the link. I've actually seen that before and tried to match it, but no success. Should I be using the RTX_CM4.lib from SDK v11 or should I use the one from Keil pack? I tried to overwrite RTX_CM4.lib in the Keil installation dir with the one from the SDK. I also tried including the cm4.lib in my project itself. In nRF51, we were using HAL_CM0.c in our project. I noticed that in SDK, it doesn't package that file with it. But instead, it's there in Keil dir. Any other suggestions?