1 /*
2 * Copyright (c) 2017 Oticon A/S
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Note that the function prototypes are taken from the NRFx HAL
7 */
8 #include "hal/nrf_rng.h"
9 #include "bs_tracing.h"
10 #include "NHW_RNG.h"
11
12 extern NRF_RNG_Type NRF_RNG_regs;
13
nrf_rng_task_trigger(NRF_RNG_Type * p_reg,nrf_rng_task_t rng_task)14 void nrf_rng_task_trigger(NRF_RNG_Type * p_reg, nrf_rng_task_t rng_task)
15 {
16 *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)rng_task)) = 0x1UL;
17
18 if ( rng_task == NRF_RNG_TASK_START ) {
19 nhw_RNG_regw_sideeffects_TASKS_START();
20 } else if ( rng_task == NRF_RNG_TASK_STOP ) {
21 nhw_RNG_regw_sideeffects_TASKS_STOP();
22 } else {
23 bs_trace_error_line_time("Not supported task started in nrf_rng\n");
24 }
25 }
26
nrf_rng_int_enable(NRF_RNG_Type * p_reg,uint32_t mask)27 void nrf_rng_int_enable(NRF_RNG_Type * p_reg, uint32_t mask)
28 {
29 NRF_RNG_regs.INTENSET = mask;
30 nhw_RNG_regw_sideeffects_INTENSET();
31 }
32
nrf_rng_int_disable(NRF_RNG_Type * p_reg,uint32_t mask)33 void nrf_rng_int_disable(NRF_RNG_Type * p_reg, uint32_t mask)
34 {
35 NRF_RNG_regs.INTENCLR = mask;
36 nhw_RNG_regw_sideeffects_INTENCLR();
37 }
38
nrf_rng_event_clear(NRF_RNG_Type * p_reg,nrf_rng_event_t rng_event)39 void nrf_rng_event_clear(NRF_RNG_Type * p_reg, nrf_rng_event_t rng_event)
40 {
41 *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)rng_event)) = 0x0UL;
42 nhw_RNG_regw_sideeffects_EVENTS_all(0);
43 }
44
45 #if defined(DPPI_PRESENT)
46
nrf_rng_subscribe_common(NRF_RNG_Type * p_reg,nrf_rng_task_t task)47 static void nrf_rng_subscribe_common(NRF_RNG_Type * p_reg,
48 nrf_rng_task_t task)
49 {
50 if (task == NRF_RNG_TASK_START) {
51 nhw_RNG_regw_sideeffects_SUBSCRIBE_START(0);
52 } else if ( task == NRF_RNG_TASK_STOP ) {
53 nhw_RNG_regw_sideeffects_SUBSCRIBE_STOP(0);
54 } else {
55 bs_trace_error_line_time("Attempted to subscribe to an not-supported task in the nrf_rng (%i)\n",
56 task);
57 }
58 }
59
nrf_rng_subscribe_set(NRF_RNG_Type * p_reg,nrf_rng_task_t task,uint8_t channel)60 void nrf_rng_subscribe_set(NRF_RNG_Type * p_reg,
61 nrf_rng_task_t task,
62 uint8_t channel)
63 {
64 *((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) task + 0x80uL)) =
65 ((uint32_t)channel | NRF_SUBSCRIBE_PUBLISH_ENABLE);
66 nrf_rng_subscribe_common(p_reg, task);
67 }
68
nrf_rng_subscribe_clear(NRF_RNG_Type * p_reg,nrf_rng_task_t task)69 void nrf_rng_subscribe_clear(NRF_RNG_Type * p_reg,
70 nrf_rng_task_t task)
71 {
72 *((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) task + 0x80uL)) = 0;
73 nrf_rng_subscribe_common(p_reg, task);
74 }
75
76 #endif /* defined(DPPI_PRESENT) */
77
