FREE RTOS ON NRF52810

[stone.xiang]

Hi,

I am transferring my nrf52832 project to nrf52810,and I have deploy the project according to the user guide (Transferring the project to nRF52810 hardware),

when I add the FREE RTOS system to the project(NRF52810) and build it, i got this erros:

compiling port_cmsis.c...
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis.c(43): error: #35: #error directive: This port can only be used when the project options are configured to enable hardware floating point support.
#error This port can only be used when the project options are configured to enable hardware floating point support.
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis.c: 0 warnings, 1 error
compiling port_cmsis_systick.c...
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis_systick.c(124): error: #20: identifier "NRF_RTC2" is undefined
uint32_t systick_counter = nrf_rtc_counter_get(
ortNRF_RTC_REG);
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis_systick.c(171): error: #20: identifier "NRF_RTC2" is undefined
nrf_rtc_prescaler_set(
ortNRF_RTC_REG, portNRF_RTC_PRESCALER);
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis_systick.c(177): error: #20: identifier "RTC2_IRQn" is undefined
NVIC_SetPriority(
ortNRF_RTC_IRQn, configKERNEL_INTERRUPT_PRIORITY);
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis_systick.c: 0 warnings, 3 errors

Did NRF52810 support FREE RTOS system? why there is no demo about FREE RTOS on NRF52810 in the example?

I really spent a lot of time in theses erros, please help me.

Thanks.

[jakub]

Hi

you are trying to use resources that are not available on nrf52810 like fpu and RTC2.

[stone.xiang]

The FREE RTOS system i used is in the SDK folder(..\nRF5_SDK_15.0.0_a53641a\nRF5_SDK_15.0.0_a53641a\external\freertos), I did'nt change the code.

What should i do to config the RTOS,  or can you provide me a demo  about RTOS on  nrf52180.

thanks. 

[Håkon Alseth]

Hi,

 

Unfortunately, there's no port without FPU for freertos in the SDK.

Could you try the proposed workaround posted here?

https://devzone.nordicsemi.com/f/nordic-q-a/30103/freertos-on-nrf52810

 

Kind regards,

Håkon

[stone.xiang]

Hi,

I have try according to the proposed, It could solve some problems, but there are some errors about RTC when compiling   port_cmsis_systick.c, how to solve these problems?

compiling port_cmsis_systick.c...
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis_systick.c(124): error: #20: identifier "NRF_RTC2" is undefined
uint32_t systick_counter = nrf_rtc_counter_get(
ortNRF_RTC_REG);
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis_systick.c(171): error: #20: identifier "NRF_RTC2" is undefined
nrf_rtc_prescaler_set(
ortNRF_RTC_REG, portNRF_RTC_PRESCALER);
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis_systick.c(177): error: #20: identifier "RTC2_IRQn" is undefined
NVIC_SetPriority(
ortNRF_RTC_IRQn, configKERNEL_INTERRUPT_PRIORITY);
..\..\..\..\..\..\external\freertos\portable\CMSIS\nrf52\port_cmsis_systick.c: 0 warnings, 3 errors

Kind regards,

THANKS.

[Håkon Alseth]

Hi,

 

Sorry that I did not address this one earlier. As the nRF52810 only has 2 RTC instances as listed in this overview of the nRF52-series (RTC0 and RTC1), you need to change this to one of these that are available in your application. Note that RTC0 is used by the softdevice.

 

Best regards,

Håkon