Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

targets/TARGET_NORDIC/TARGET_NRF5/common_rtc.h@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

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elessair 0:f269e3021894 1 /* mbed Microcontroller Library
elessair 0:f269e3021894 2 * Copyright (c) 2015 ARM Limited
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 5 * you may not use this file except in compliance with the License.
elessair 0:f269e3021894 6 * You may obtain a copy of the License at
elessair 0:f269e3021894 7 *
elessair 0:f269e3021894 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 9 *
elessair 0:f269e3021894 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 13 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 14 * limitations under the License.
elessair 0:f269e3021894 15 */
elessair 0:f269e3021894 16
elessair 0:f269e3021894 17 #ifndef COMMON_RTC_H
elessair 0:f269e3021894 18 #define COMMON_RTC_H
elessair 0:f269e3021894 19
elessair 0:f269e3021894 20 #include "nrf_rtc.h"
elessair 0:f269e3021894 21
elessair 0:f269e3021894 22 #define RTC_COUNTER_BITS 24u
elessair 0:f269e3021894 23
elessair 0:f269e3021894 24 // Instance 0 is reserved for SoftDevice.
elessair 0:f269e3021894 25 // Instance 1 is used as a common one for us_ticker, lp_ticker and (in case
elessair 0:f269e3021894 26 // of NRF51) as an alternative tick source for RTOS.
elessair 0:f269e3021894 27 // ["us_ticker.c" uses hard coded addresses of the 'NRF_RTC1->EVENT_COMPARE[1]'
elessair 0:f269e3021894 28 // register in inline assembly implementations of COMMON_RTC_IRQ_HANDLER,
elessair 0:f269e3021894 29 // please remember to update those in case of doing changes here]
elessair 0:f269e3021894 30 #define COMMON_RTC_INSTANCE NRF_RTC1
elessair 0:f269e3021894 31 #define COMMON_RTC_IRQ_HANDLER RTC1_IRQHandler
elessair 0:f269e3021894 32 #define US_TICKER_CC_CHANNEL 0
elessair 0:f269e3021894 33 #define OS_TICK_CC_CHANNEL 1
elessair 0:f269e3021894 34 #define LP_TICKER_CC_CHANNEL 2
elessair 0:f269e3021894 35
elessair 0:f269e3021894 36 #define COMMON_RTC_EVENT_COMPARE(channel) \
elessair 0:f269e3021894 37 CONCAT_2(NRF_RTC_EVENT_COMPARE_, channel)
elessair 0:f269e3021894 38 #define COMMON_RTC_INT_COMPARE_MASK(channel) \
elessair 0:f269e3021894 39 CONCAT_3(NRF_RTC_INT_COMPARE, channel, _MASK)
elessair 0:f269e3021894 40
elessair 0:f269e3021894 41 #define US_TICKER_EVENT COMMON_RTC_EVENT_COMPARE(US_TICKER_CC_CHANNEL)
elessair 0:f269e3021894 42 #define US_TICKER_INT_MASK COMMON_RTC_INT_COMPARE_MASK(US_TICKER_CC_CHANNEL)
elessair 0:f269e3021894 43 #define OS_TICK_EVENT COMMON_RTC_EVENT_COMPARE(OS_TICK_CC_CHANNEL)
elessair 0:f269e3021894 44 #define OS_TICK_INT_MASK COMMON_RTC_INT_COMPARE_MASK(OS_TICK_CC_CHANNEL)
elessair 0:f269e3021894 45 #define LP_TICKER_EVENT COMMON_RTC_EVENT_COMPARE(LP_TICKER_CC_CHANNEL)
elessair 0:f269e3021894 46 #define LP_TICKER_INT_MASK COMMON_RTC_INT_COMPARE_MASK(LP_TICKER_CC_CHANNEL)
elessair 0:f269e3021894 47
elessair 0:f269e3021894 48 extern bool m_common_rtc_enabled;
elessair 0:f269e3021894 49 extern uint32_t volatile m_common_rtc_overflows;
elessair 0:f269e3021894 50
elessair 0:f269e3021894 51 void common_rtc_init(void);
elessair 0:f269e3021894 52 uint32_t common_rtc_32bit_ticks_get(void);
elessair 0:f269e3021894 53 uint64_t common_rtc_64bit_us_get(void);
elessair 0:f269e3021894 54 void common_rtc_set_interrupt(uint32_t us_timestamp, uint32_t cc_channel,
elessair 0:f269e3021894 55 uint32_t int_mask);
elessair 0:f269e3021894 56
elessair 0:f269e3021894 57 #endif // COMMON_RTC_H