The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
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mbed 2
This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.
TARGET_DISCO_F334C8/TARGET_STM/rtc_api_hal.h
- Committer:
- AnnaBridge
- Date:
- 2018-05-11
- Revision:
- 167:84c0a372a020
- Parent:
- 161:aa5281ff4a02
- Child:
- 169:a7c7b631e539
File content as of revision 167:84c0a372a020:
/* mbed Microcontroller Library ******************************************************************************* * Copyright (c) 2017, STMicroelectronics * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ******************************************************************************* */ #ifndef MBED_RTC_API_HAL_H #define MBED_RTC_API_HAL_H #include <stdint.h> #include "rtc_api.h" #include "ticker_api.h" #include "lp_ticker_api.h" #include "us_ticker_api.h" #include "hal_tick.h" #include "mbed_critical.h" #include "mbed_error.h" #include "mbed_debug.h" #ifdef __cplusplus extern "C" { #endif #if MBED_CONF_TARGET_LSE_AVAILABLE #define RTC_CLOCK LSE_VALUE #else #define RTC_CLOCK LSI_VALUE #endif /* PREDIV_A : 7-bit asynchronous prescaler */ /* PREDIV_S : 15-bit synchronous prescaler */ /* PREDIV_S is set in order to get a 1 Hz clock */ #if DEVICE_LOWPOWERTIMER && !MBED_CONF_TARGET_LOWPOWERTIMER_LPTIM /* PREDIV_A is set to a small value to improve the SubSeconds resolution */ /* with a 32768Hz clock, PREDIV_A=7 gives a precision of 244us */ #define PREDIV_A_VALUE 7 #else /* DEVICE_LPTICKER && !MBED_CONF_TARGET_LPTICKER_LPTIM */ /* PREDIV_A is set to the maximum value to improve the consumption */ #define PREDIV_A_VALUE 127 #endif /* DEVICE_LPTICKER && !MBED_CONF_TARGET_LPTICKER_LPTIM */ #define PREDIV_S_VALUE RTC_CLOCK / (PREDIV_A_VALUE + 1) - 1 /** Read RTC time with subsecond precision. * * @return Time is microsecond */ uint32_t rtc_read_us(void); /** Program a wake up timer event in delta microseconds. * * @param delta The time to wait */ void rtc_set_wake_up_timer(uint32_t delta); /** Disable the wake up timer event. * * The wake up timer use auto reload, you have to deactivate it manually. */ void rtc_deactivate_wake_up_timer(void); /** Synchronise the RTC shadow registers. * * Must be called after a deepsleep. */ void rtc_synchronize(void); #ifdef __cplusplus } #endif #endif