void nrf_drv_rng_uninit(void)
{
ASSERT(m_rng_cb.state == NRF_DRV_STATE_INITIALIZED);
m_rng_cb.state = NRF_DRV_STATE_UNINITIALIZED;
#ifndef SOFTDEVICE_PRESENT
rng_stop();
nrf_drv_common_irq_disable(RNG_IRQn);
#endif // SOFTDEVICE_PRESENT
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// uint8_t rng_get_one_byte_and_turn_off()
//
// Description:
// Turns on the RNG, waits for a random number, then turns the RNG back off. You do not have to call rng_configure() prior
// to calling this function, as this function does that itself.
//
// Parameters:
// None
//
// Return value:
// A random number
//
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
uint8_t rng_get_one_byte_and_turn_off()
{
uint8_t rand_val;
rng_configure(RNG_CONFIG_OPTION_RUN | RNG_CONFIG_CORRECTOR_ENABLE);
rand_val = rng_get_next_byte();
rng_stop();
return rand_val;
}
void RNG_IRQHandler(void)
{
if (nrf_rng_event_get(NRF_RNG_EVENT_VALRDY) &&
nrf_rng_int_get(NRF_RNG_INT_VALRDY_MASK))
{
nrf_rng_event_clear(NRF_RNG_EVENT_VALRDY);
uint32_t nrf_error = app_fifo_put(&m_rng_cb.rand_pool, nrf_rng_random_value_get());
if ((FIFO_LENGTH(m_rng_cb.rand_pool) > m_rng_cb.rand_pool.buf_size_mask) || (nrf_error == NRF_ERROR_NO_MEM))
{
rng_stop();
}
}
}