| /* |
| * Copyright (c) 2016 Nordic Semiconductor ASA |
| * Copyright (c) 2016 Vinayak Kariappa Chettimada |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "nrf.h" |
| |
| #include "debug.h" |
| |
| /* RTC instance to use */ |
| #define NRF_RTC NRF_RTC0 |
| |
| static uint8_t _rtc_refcount; |
| |
| void rtc_init(void) |
| { |
| NRF_RTC->PRESCALER = 0; |
| NRF_RTC->EVTENSET = |
| (RTC_EVTENSET_COMPARE0_Msk | RTC_EVTENSET_COMPARE1_Msk); |
| NRF_RTC->INTENSET = |
| (RTC_INTENSET_COMPARE0_Msk | RTC_INTENSET_COMPARE1_Msk); |
| } |
| |
| uint32_t rtc_start(void) |
| { |
| if (_rtc_refcount++) { |
| return 1; |
| } |
| |
| NRF_RTC->TASKS_START = 1; |
| |
| return 0; |
| } |
| |
| uint32_t rtc_stop(void) |
| { |
| LL_ASSERT(_rtc_refcount); |
| |
| if (--_rtc_refcount) { |
| return 1; |
| } |
| |
| NRF_RTC->TASKS_STOP = 1; |
| |
| return 0; |
| } |
| |
| uint32_t rtc_tick_get(void) |
| { |
| return NRF_RTC->COUNTER; |
| } |
| |
| void rtc_compare_set(uint8_t instance, uint32_t value) |
| { |
| NRF_RTC->CC[instance] = value; |
| } |