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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

targets/TARGET_ONSEMI/TARGET_NCS36510/ncs36510_lp_ticker_api.c@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /**
group-onsemi 0:098463de4c5d 2 *******************************************************************************
group-onsemi 0:098463de4c5d 3 * @file lpticker.c
group-onsemi 0:098463de4c5d 4 * @brief Implementation of a Low Power Ticker functionality based on RTC
group-onsemi 0:098463de4c5d 5 * @internal
group-onsemi 0:098463de4c5d 6 * @author ON Semiconductor
group-onsemi 0:098463de4c5d 7 * $Rev: $
group-onsemi 0:098463de4c5d 8 * $Date: $
group-onsemi 0:098463de4c5d 9 ******************************************************************************
group-onsemi 0:098463de4c5d 10 * Copyright 2016 Semiconductor Components Industries LLC (d/b/a “ON Semiconductor”).
group-onsemi 0:098463de4c5d 11 * All rights reserved. This software and/or documentation is licensed by ON Semiconductor
group-onsemi 0:098463de4c5d 12 * under limited terms and conditions. The terms and conditions pertaining to the software
group-onsemi 0:098463de4c5d 13 * and/or documentation are available at http://www.onsemi.com/site/pdf/ONSEMI_T&C.pdf
group-onsemi 0:098463de4c5d 14 * (“ON Semiconductor Standard Terms and Conditions of Sale, Section 8 Software”) and
group-onsemi 0:098463de4c5d 15 * if applicable the software license agreement. Do not use this software and/or
group-onsemi 0:098463de4c5d 16 * documentation unless you have carefully read and you agree to the limited terms and
group-onsemi 0:098463de4c5d 17 * conditions. By using this software and/or documentation, you agree to the limited
group-onsemi 0:098463de4c5d 18 * terms and conditions.
group-onsemi 0:098463de4c5d 19 *
group-onsemi 0:098463de4c5d 20 * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
group-onsemi 0:098463de4c5d 21 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
group-onsemi 0:098463de4c5d 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
group-onsemi 0:098463de4c5d 23 * ON SEMICONDUCTOR SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL,
group-onsemi 0:098463de4c5d 24 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
group-onsemi 0:098463de4c5d 25 * @endinternal
group-onsemi 0:098463de4c5d 26 *
group-onsemi 0:098463de4c5d 27 * @ingroup lpticker
group-onsemi 0:098463de4c5d 28 *
group-onsemi 0:098463de4c5d 29 * @details
group-onsemi 0:098463de4c5d 30 * This is Low Power ticker derived from RTC
group-onsemi 0:098463de4c5d 31 *
group-onsemi 0:098463de4c5d 32 */
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 #include "device.h"
group-onsemi 0:098463de4c5d 35 #if DEVICE_LOWPOWERTIMER
group-onsemi 0:098463de4c5d 36
group-onsemi 0:098463de4c5d 37 #include "sleep_api.h"
group-onsemi 0:098463de4c5d 38 #include "cmsis_nvic.h"
group-onsemi 0:098463de4c5d 39 #include "lp_ticker_api.h"
group-onsemi 0:098463de4c5d 40 #include "rtc.h"
group-onsemi 0:098463de4c5d 41 #include "rtc_map.h"
group-onsemi 0:098463de4c5d 42 #include "sleep.h"
group-onsemi 0:098463de4c5d 43
group-onsemi 0:098463de4c5d 44 /* Initialize the RTC for low power ticker */
group-onsemi 0:098463de4c5d 45 void lp_ticker_init()
group-onsemi 0:098463de4c5d 46 {
group-onsemi 0:098463de4c5d 47 fRtcInit();
group-onsemi 0:098463de4c5d 48 }
group-onsemi 0:098463de4c5d 49
group-onsemi 0:098463de4c5d 50 /* Return the current RTC counter value in us */
group-onsemi 0:098463de4c5d 51 uint32_t lp_ticker_read()
group-onsemi 0:098463de4c5d 52 {
group-onsemi 0:098463de4c5d 53 return (uint32_t)(fRtcRead() & 0xFFFFFFFF); /* TODO Truncating 64 bit value to 32 bit */
group-onsemi 0:098463de4c5d 54 }
group-onsemi 0:098463de4c5d 55
group-onsemi 0:098463de4c5d 56 /* Set interrupt for specified time */
group-onsemi 0:098463de4c5d 57 void lp_ticker_set_interrupt(timestamp_t timestamp)
group-onsemi 0:098463de4c5d 58 {
group-onsemi 0:098463de4c5d 59 /* The RTC Match register needs to be Set to the RTC alarm value */
group-onsemi 0:098463de4c5d 60 fRtcSetInterrupt(timestamp);
group-onsemi 0:098463de4c5d 61 }
group-onsemi 0:098463de4c5d 62
group-onsemi 0:098463de4c5d 63 /** Disable low power ticker interrupt
group-onsemi 0:098463de4c5d 64 *
group-onsemi 0:098463de4c5d 65 */
group-onsemi 0:098463de4c5d 66 void lp_ticker_disable_interrupt(void)
group-onsemi 0:098463de4c5d 67 {
group-onsemi 0:098463de4c5d 68 fRtcDisableInterrupt();
group-onsemi 0:098463de4c5d 69 }
group-onsemi 0:098463de4c5d 70
group-onsemi 0:098463de4c5d 71 /** Clear the low power ticker interrupt
group-onsemi 0:098463de4c5d 72 *
group-onsemi 0:098463de4c5d 73 */
group-onsemi 0:098463de4c5d 74 void lp_ticker_clear_interrupt(void)
group-onsemi 0:098463de4c5d 75 {
group-onsemi 0:098463de4c5d 76 fRtcClearInterrupt();
group-onsemi 0:098463de4c5d 77 }
group-onsemi 0:098463de4c5d 78
group-onsemi 0:098463de4c5d 79 #endif /* DEVICE_LOWPOWERTIMER */