Using the random number generator with SDK 15.3

[bojerko]

I am trying to use RNG HAL  but I am not sure how to use it and there are (as far as I can tell) no examples. The only thing I need is generating random number. So I'm not using any cryptography, but just need simple random number.

I wrote the code like that:

nrf_rng_task_trigger(NRF_RNG_TASK_SET);
uint8_t value = nrf_rng_random_value_get();

But apparently I'm missing something. I have also added #define RNG_ENABLED 1 to sdk_config.h

Any suggestions what to do?

Thanks.

[bojerko]

Found the error in the code. The proper way is to use:

nrf_rng_task_trigger(NRF_RNG_TASK_START);
uint8_t value = nrf_rng_random_value_get();

So I made a mistake and used NRF_RNG_TASK_SET instead of NRF_RNG_TASK_START.

It works now.