https://devzone.nordicsemi.com/f/nordic-q-a/23070/how-to-call-micro-ecc-functions-in-sdk12-2The micro ecc works well in sdk11.0. However, after I recompile micro ecc in sd12.2, micro ecc can&#39;t work in S132 3.0. I append micro Ecc functions to the Uart Demo in SDK12.2, the source as follow: void testecc(void) { uint8_t sk[32]; uint8_ten-USTelligent Community 13Tue, 27 Jun 2017 20:52:05 GMThttps://devzone.nordicsemi.com/thread/90794?ContentTypeID=1Tue, 27 Jun 2017 20:52:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2c8d3851-1322-4cff-adea-0ee4bc306fd3Eric<p>Just wait a few seconds, everything works well. Maybe RNG need sometime to generate the random number.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/90793?ContentTypeID=1Tue, 27 Jun 2017 17:58:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d90d128a-9a62-47f3-be24-5c63d3f5cccdEric<p>I found I didn&#39;t call the function nrf_drv_rng_init(NULL), after I call that function, I got the error information:RNG:WARNING:Function: nrf_drv_rng_rand, error code: NRF_ERROR_NOT_FOUND.</p><div style="clear:both;"></div>