problem with BLE HRSC - error 0x8502

[dragilla]

Hi, 

I'm on SDK 17.0.2 and SD 340. Trying to combine BLE services as Central server with BLE HRS_C example. The idea is to read the BLE HRM and also to be able to connect to my app using a BT app on my mobile phone. I can do both but in separate apps :) When I try to combine them I get the following error:

<error> nrf_ble_lesc: nrf_crypto_ecc_key_pair_generate() returned error 0x8502.

Can you help?

Thanks

[dragilla]

Some more details in the screenshot below:

photos.app.goo.gl/MiXAns4h6uU6ZDQPA

[Vidar Berg]

Hello,

Error code 0x8502 corresponds to NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED which in this context means the RNG has not been initialized. Please confirm if you have the following settings enabled in your sdk_config header:

NRF_CRYPTO_BACKEND_CC310_RNG_ENABLED

NRF_CRYPTO_RNG_AUTO_INIT_ENABLED

NRF_CRYPTO_RNG_STATIC_MEMORY_BUFFERS_ENABLED

Best regards,

Vidar

[dragilla]

Hi, I do, all of them are set to "1". 

I also searched through the project to see if they're being overwritten somewhere and I found a wierd thing - NRF_CRYPTO_BACKEND_CC310_RNG_ENABLED appears only in skd_config. 

[Vidar Berg]

Hi,

You should get more hits if you search for "NRF_CRYPTO_BACKEND_CC310_RNG" without "_ENABLE" at the end. The NRF_MODULE_ENABLED() appends this automatically.

Does your project include the cc310_backend_rng.c file?

[dragilla]

Yes. See the screenshot.