Daniel Sygut / Application

lol

Dependencies:   MMA8451Q

Fork of Application by Mateusz Kowalik

mbed-dev/targets/TARGET_STM/lp_ticker.c@10:41552d038a69, 2017-01-10 (annotated)

Committer:
Zaitsev
Date:
Tue Jan 10 20:42:26 2017 +0000
Revision:
10:41552d038a69
USB Serial bi-directional bridge

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Zaitsev 10:41552d038a69 1 /* mbed Microcontroller Library
Zaitsev 10:41552d038a69 2 *******************************************************************************
Zaitsev 10:41552d038a69 3 * Copyright (c) 2016, STMicroelectronics
Zaitsev 10:41552d038a69 4 * All rights reserved.
Zaitsev 10:41552d038a69 5 *
Zaitsev 10:41552d038a69 6 * Redistribution and use in source and binary forms, with or without
Zaitsev 10:41552d038a69 7 * modification, are permitted provided that the following conditions are met:
Zaitsev 10:41552d038a69 8 *
Zaitsev 10:41552d038a69 9 * 1. Redistributions of source code must retain the above copyright notice,
Zaitsev 10:41552d038a69 10 * this list of conditions and the following disclaimer.
Zaitsev 10:41552d038a69 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
Zaitsev 10:41552d038a69 12 * this list of conditions and the following disclaimer in the documentation
Zaitsev 10:41552d038a69 13 * and/or other materials provided with the distribution.
Zaitsev 10:41552d038a69 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
Zaitsev 10:41552d038a69 15 * may be used to endorse or promote products derived from this software
Zaitsev 10:41552d038a69 16 * without specific prior written permission.
Zaitsev 10:41552d038a69 17 *
Zaitsev 10:41552d038a69 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Zaitsev 10:41552d038a69 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Zaitsev 10:41552d038a69 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Zaitsev 10:41552d038a69 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
Zaitsev 10:41552d038a69 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
Zaitsev 10:41552d038a69 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
Zaitsev 10:41552d038a69 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
Zaitsev 10:41552d038a69 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
Zaitsev 10:41552d038a69 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Zaitsev 10:41552d038a69 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Zaitsev 10:41552d038a69 28 *******************************************************************************
Zaitsev 10:41552d038a69 29 */
Zaitsev 10:41552d038a69 30 #include "device.h"
Zaitsev 10:41552d038a69 31
Zaitsev 10:41552d038a69 32 #if DEVICE_LOWPOWERTIMER
Zaitsev 10:41552d038a69 33
Zaitsev 10:41552d038a69 34 #include "ticker_api.h"
Zaitsev 10:41552d038a69 35 #include "lp_ticker_api.h"
Zaitsev 10:41552d038a69 36 #include "rtc_api.h"
Zaitsev 10:41552d038a69 37 #include "rtc_api_hal.h"
Zaitsev 10:41552d038a69 38
Zaitsev 10:41552d038a69 39 static uint8_t lp_ticker_inited = 0;
Zaitsev 10:41552d038a69 40
Zaitsev 10:41552d038a69 41 void lp_ticker_init(void)
Zaitsev 10:41552d038a69 42 {
Zaitsev 10:41552d038a69 43 if (lp_ticker_inited) return;
Zaitsev 10:41552d038a69 44 lp_ticker_inited = 1;
Zaitsev 10:41552d038a69 45
Zaitsev 10:41552d038a69 46 rtc_init();
Zaitsev 10:41552d038a69 47 rtc_set_irq_handler((uint32_t) lp_ticker_irq_handler);
Zaitsev 10:41552d038a69 48 }
Zaitsev 10:41552d038a69 49
Zaitsev 10:41552d038a69 50 uint32_t lp_ticker_read(void)
Zaitsev 10:41552d038a69 51 {
Zaitsev 10:41552d038a69 52 uint32_t usecs = 0;
Zaitsev 10:41552d038a69 53 time_t time = 0;
Zaitsev 10:41552d038a69 54
Zaitsev 10:41552d038a69 55 lp_ticker_init();
Zaitsev 10:41552d038a69 56
Zaitsev 10:41552d038a69 57 do {
Zaitsev 10:41552d038a69 58 time = rtc_read();
Zaitsev 10:41552d038a69 59 usecs = rtc_read_subseconds();
Zaitsev 10:41552d038a69 60 } while (time != rtc_read());
Zaitsev 10:41552d038a69 61
Zaitsev 10:41552d038a69 62 return (time * 1000000) + usecs;
Zaitsev 10:41552d038a69 63 }
Zaitsev 10:41552d038a69 64
Zaitsev 10:41552d038a69 65 void lp_ticker_set_interrupt(timestamp_t timestamp)
Zaitsev 10:41552d038a69 66 {
Zaitsev 10:41552d038a69 67 uint32_t delta;
Zaitsev 10:41552d038a69 68
Zaitsev 10:41552d038a69 69 delta = timestamp - lp_ticker_read();
Zaitsev 10:41552d038a69 70 rtc_set_wake_up_timer(delta);
Zaitsev 10:41552d038a69 71 }
Zaitsev 10:41552d038a69 72
Zaitsev 10:41552d038a69 73 void lp_ticker_disable_interrupt(void)
Zaitsev 10:41552d038a69 74 {
Zaitsev 10:41552d038a69 75 rtc_deactivate_wake_up_timer();
Zaitsev 10:41552d038a69 76 }
Zaitsev 10:41552d038a69 77
Zaitsev 10:41552d038a69 78 void lp_ticker_clear_interrupt(void)
Zaitsev 10:41552d038a69 79 {
Zaitsev 10:41552d038a69 80
Zaitsev 10:41552d038a69 81 }
Zaitsev 10:41552d038a69 82
Zaitsev 10:41552d038a69 83 #endif