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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_B96B_F446VE/TARGET_STM/rtc_api_hal.h@169:a7c7b631e539, 2018-06-22 (annotated)

Committer:
Anna Bridge
Date:
Fri Jun 22 15:38:59 2018 +0100
Revision:
169:a7c7b631e539
Parent:
167:84c0a372a020 
mbed library. Release version 162

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 156:ff21514d8981 1 /* mbed Microcontroller Library
AnnaBridge 156:ff21514d8981 2 *******************************************************************************
Anna Bridge 169:a7c7b631e539 3 * Copyright (c) 2018, STMicroelectronics
AnnaBridge 156:ff21514d8981 4 * All rights reserved.
AnnaBridge 156:ff21514d8981 5 *
AnnaBridge 156:ff21514d8981 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 156:ff21514d8981 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 156:ff21514d8981 8 *
AnnaBridge 156:ff21514d8981 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 156:ff21514d8981 10 * this list of conditions and the following disclaimer.
AnnaBridge 156:ff21514d8981 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 156:ff21514d8981 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 156:ff21514d8981 13 * and/or other materials provided with the distribution.
AnnaBridge 156:ff21514d8981 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 156:ff21514d8981 15 * may be used to endorse or promote products derived from this software
AnnaBridge 156:ff21514d8981 16 * without specific prior written permission.
AnnaBridge 156:ff21514d8981 17 *
AnnaBridge 156:ff21514d8981 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 156:ff21514d8981 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 156:ff21514d8981 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 156:ff21514d8981 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 156:ff21514d8981 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 156:ff21514d8981 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 156:ff21514d8981 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 156:ff21514d8981 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 156:ff21514d8981 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 156:ff21514d8981 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 156:ff21514d8981 28 *******************************************************************************
AnnaBridge 156:ff21514d8981 29 */
AnnaBridge 156:ff21514d8981 30
AnnaBridge 156:ff21514d8981 31 #ifndef MBED_RTC_API_HAL_H
AnnaBridge 156:ff21514d8981 32 #define MBED_RTC_API_HAL_H
AnnaBridge 156:ff21514d8981 33
AnnaBridge 156:ff21514d8981 34 #include "rtc_api.h"
Anna Bridge 160:5571c4ff569f 35 #include "lp_ticker_api.h"
AnnaBridge 156:ff21514d8981 36
AnnaBridge 156:ff21514d8981 37 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 38 extern "C" {
AnnaBridge 156:ff21514d8981 39 #endif
AnnaBridge 156:ff21514d8981 40
Anna Bridge 160:5571c4ff569f 41 #if MBED_CONF_TARGET_LSE_AVAILABLE
Anna Bridge 160:5571c4ff569f 42 #define RTC_CLOCK LSE_VALUE
Anna Bridge 160:5571c4ff569f 43 #else
Anna Bridge 160:5571c4ff569f 44 #define RTC_CLOCK LSI_VALUE
Anna Bridge 160:5571c4ff569f 45 #endif
AnnaBridge 156:ff21514d8981 46
Anna Bridge 169:a7c7b631e539 47 #if DEVICE_LPTICKER && !MBED_CONF_TARGET_LPTICKER_LPTIM
AnnaBridge 167:84c0a372a020 48 /* PREDIV_A : 7-bit asynchronous prescaler */
Anna Bridge 169:a7c7b631e539 49 /* PREDIV_A is set to set LPTICKER frequency to RTC_CLOCK/4 */
Anna Bridge 169:a7c7b631e539 50 #define PREDIV_A_VALUE 3
AnnaBridge 167:84c0a372a020 51
Anna Bridge 169:a7c7b631e539 52 /** Read RTC counter with sub second precision
AnnaBridge 156:ff21514d8981 53 *
Anna Bridge 169:a7c7b631e539 54 * @return LP ticker counter
AnnaBridge 156:ff21514d8981 55 */
Anna Bridge 169:a7c7b631e539 56 uint32_t rtc_read_lp(void);
AnnaBridge 156:ff21514d8981 57
Anna Bridge 169:a7c7b631e539 58 /** Program a wake up timer event
AnnaBridge 156:ff21514d8981 59 *
Anna Bridge 169:a7c7b631e539 60 * @param timestamp: counter to set
AnnaBridge 156:ff21514d8981 61 */
Anna Bridge 169:a7c7b631e539 62 void rtc_set_wake_up_timer(timestamp_t timestamp);
Anna Bridge 169:a7c7b631e539 63
Anna Bridge 169:a7c7b631e539 64 /** Call RTC Wake Up IT
Anna Bridge 169:a7c7b631e539 65 */
Anna Bridge 169:a7c7b631e539 66 void rtc_fire_interrupt(void);
AnnaBridge 156:ff21514d8981 67
AnnaBridge 156:ff21514d8981 68 /** Disable the wake up timer event.
AnnaBridge 156:ff21514d8981 69 *
AnnaBridge 156:ff21514d8981 70 * The wake up timer use auto reload, you have to deactivate it manually.
AnnaBridge 156:ff21514d8981 71 */
AnnaBridge 156:ff21514d8981 72 void rtc_deactivate_wake_up_timer(void);
AnnaBridge 156:ff21514d8981 73
Anna Bridge 169:a7c7b631e539 74 #else /* DEVICE_LPTICKER && !MBED_CONF_TARGET_LPTICKER_LPTIM */
Anna Bridge 169:a7c7b631e539 75
Anna Bridge 169:a7c7b631e539 76 /* PREDIV_A : 7-bit asynchronous prescaler */
Anna Bridge 169:a7c7b631e539 77 /* PREDIV_A is set to the maximum value to improve the consumption */
Anna Bridge 169:a7c7b631e539 78 #define PREDIV_A_VALUE 127
Anna Bridge 169:a7c7b631e539 79
Anna Bridge 169:a7c7b631e539 80 #endif /* DEVICE_LPTICKER && !MBED_CONF_TARGET_LPTICKER_LPTIM */
Anna Bridge 169:a7c7b631e539 81
Anna Bridge 169:a7c7b631e539 82 /* PREDIV_S : 15-bit synchronous prescaler */
Anna Bridge 169:a7c7b631e539 83 /* PREDIV_S is set in order to get a 1 Hz clock */
Anna Bridge 169:a7c7b631e539 84 #define PREDIV_S_VALUE RTC_CLOCK / (PREDIV_A_VALUE + 1) - 1
Anna Bridge 169:a7c7b631e539 85
AnnaBridge 156:ff21514d8981 86 /** Synchronise the RTC shadow registers.
AnnaBridge 156:ff21514d8981 87 *
AnnaBridge 156:ff21514d8981 88 * Must be called after a deepsleep.
AnnaBridge 156:ff21514d8981 89 */
AnnaBridge 156:ff21514d8981 90 void rtc_synchronize(void);
AnnaBridge 156:ff21514d8981 91
AnnaBridge 156:ff21514d8981 92 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 93 }
AnnaBridge 156:ff21514d8981 94 #endif
AnnaBridge 156:ff21514d8981 95
AnnaBridge 156:ff21514d8981 96 #endif