xQueueReceive FreeRTOS hardfault NRF52840

RE: xQueueReceive FreeRTOS hardfault NRF52840

AntonLev — Mon, 06 May 2019 08:51:50 GMT

We have used the configuration file from the previous project that used another ARM processor. The mentioned configMAX_SYSCALL_INTERRUPT_PRIORITY and configKERNEL_INTERRUPT_PRIORITY values were correct for the other processor but wrong for NRF52840.

I followed the description from here https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v11.0.0%2Ffreertos.html. The configMAX_SYSCALL_INTERRUPT_PRIORITY and configKERNEL_INTERRUPT_PRIORITY values were changed to NRF_APP_PRIORITY_LOW that is 6 in our case.

RE: xQueueReceive FreeRTOS hardfault NRF52840

Susheel Nuguru — Mon, 06 May 2019 07:30:22 GMT

were they wrong in the example file, or they did not suit your application? What values did you change them to?

Just trying to understand the need for change.

RE: xQueueReceive FreeRTOS hardfault NRF52840

AntonLev — Mon, 06 May 2019 06:59:05 GMT

Hi Susheel,

Yes, it took me some time but found the root cause. The configMAX_SYSCALL_INTERRUPT_PRIORITY and configKERNEL_INTERRUPT_PRIORITY values were incorrect in the FreeRTOS configuration file.

Best Regards,
Anton

RE: xQueueReceive FreeRTOS hardfault NRF52840

Susheel Nuguru — Fri, 03 May 2019 12:33:57 GMT

Hi Antony,

Sorry for the late response,

did you find out the reason? if not then i could do a quick test run if you give me the code for your tasks and see what causing the hardfault