never ending in random generator

[sosse]

I did some modification from radio test example. But I don't know why the function "rand8" never ending. In the function, rand8,

NRF_RNG->EVENTS_VALRDY = 0;
while (NRF_RNG->EVENTS_VALRDY == 0)
{
    // Do nothing.
}
return NRF_RNG->VALUE;

NRF_RNG->EVENTS_VALRDY is still 0 forever... Can anybody tell be why?? Thank you.

[Wojtek]

Never used that, but i think you have to start it, just like every other module.

NRF_RNG->EVENTS_VALRDY = 0;
NRF_RNG->TASK_START = 1;
while (NRF_RNG->EVENTS_VALRDY == 0)
{
    // Do nothing.
}
return NRF_RNG->VALUE;

[Sigurd]

What modification did you do? As Wojtek mentioned, you need NRF_RNG->TASK_START = 1;, this is done in the init() function, so if you removed/modified this, the function rnd8() won't return any values.

[sosse]

Thank you. I accidentally delete the init function.