Issue with NRF_SDH_SOC_OBSERVER

[Harry]

Hi,

I use NRF52840 on a custom board. I am utilizing low-level SoftDevice flash API for accessing flash:

sd_flash_page_erase() and sd_flash_write().

I want to register an event handler so that I can received notification when the flash operation is done and also to receive the status.

I did it by calling NRF_SDH_SOC_OBSERVER as follow:

NRF_SDH_SOC_OBSERVER(m_soc_evt_observer, 0, FlashEvtHandler, NULL);

However, I got this compile error: "the size of an array must be greater than zero"

What did I do wrong?

Does it refer to m_soc_evt_observer? I couldn't find its declaration in the library nor in the example code.

Thank you.

[AndreasF]

Hi.

However, I got this error: "the size of an array must be greater than zero"

 Where did you get this error? During compiling? During debugging?

Best regards,

Andreas

[Harry]

Hi Andreas, yes, I got the error during compilation. Any idea?

[AndreasF]

Hi.

Have you enabled the SoftDevice handler?

Best regards,

Andreas

[Harry]

Did you mean by calling: nrf_sdh_enable_request()?

[Harry]

I used BLE_STACK_SUPPORT_REQD in the compiler argument, still, doesn't work.

[AndreasF]

Hi.

Sorry for the late reply, I have been away.

What i meant by enabled the SoftDevice handler is that it is enabled in sdk_config.h:

// <e> NRF_SDH_BLE_ENABLED - nrf_sdh_ble - SoftDevice BLE event handler
//==========================================================
#ifndef NRF_SDH_BLE_ENABLED
#define NRF_SDH_BLE_ENABLED 1
#endif

And that these files are included in your project:

Edit: More documentation on the SoftDevice handler can be found here.

Best regards,

Andreas

[Harry]

I see, thank you.

Since I'm interested in listening to SOC event, should I use NRF_SDH_SOC_ENABLED, instead of NRF_SDH_BLE_ENABLED?

Regards.

nckhrs

[AndreasF]

Hi.

Then you should enable that one as well. That will enable the SoftDevice Handler SoC Module.

And sorry, I made an error in my previous reply, what I ment by enabling the SoftDevice handler was to set the following in sdk_config:

// <e> NRF_SDH_ENABLED - nrf_sdh - SoftDevice handler
//==========================================================
#ifndef NRF_SDH_ENABLED
#define NRF_SDH_ENABLED 1
#endif

Best regards,

Andreas