Diff: targets/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K66F/drivers/fsl_rtc.h

Revision:

149:156823d33999

Parent:

121:7f86b4238bec

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K66F/drivers/fsl_rtc.h	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,405 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * o Redistributions of source code must retain the above copyright notice, this list
+ *   of conditions and the following disclaimer.
+ *
+ * o 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.
+ *
+ * o Neither the name of Freescale Semiconductor, Inc. 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 _FSL_RTC_H_
+#define _FSL_RTC_H_
+
+#include "fsl_common.h"
+
+/*!
+ * @addtogroup rtc_driver
+ * @{
+ */
+
+/*! @file */
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*! @name Driver version */
+/*@{*/
+#define FSL_RTC_DRIVER_VERSION (MAKE_VERSION(2, 0, 0)) /*!< Version 2.0.0 */
+/*@}*/
+
+/*! @brief List of RTC interrupts */
+typedef enum _rtc_interrupt_enable
+{
+    kRTC_TimeInvalidInterruptEnable = RTC_IER_TIIE_MASK,  /*!< Time invalid interrupt.*/
+    kRTC_TimeOverflowInterruptEnable = RTC_IER_TOIE_MASK, /*!< Time overflow interrupt.*/
+    kRTC_AlarmInterruptEnable = RTC_IER_TAIE_MASK,        /*!< Alarm interrupt.*/
+    kRTC_SecondsInterruptEnable = RTC_IER_TSIE_MASK       /*!< Seconds interrupt.*/
+} rtc_interrupt_enable_t;
+
+/*! @brief List of RTC flags */
+typedef enum _rtc_status_flags
+{
+    kRTC_TimeInvalidFlag = RTC_SR_TIF_MASK,  /*!< Time invalid flag */
+    kRTC_TimeOverflowFlag = RTC_SR_TOF_MASK, /*!< Time overflow flag */
+    kRTC_AlarmFlag = RTC_SR_TAF_MASK         /*!< Alarm flag*/
+} rtc_status_flags_t;
+
+/*! @brief List of RTC Oscillator capacitor load settings */
+typedef enum _rtc_osc_cap_load
+{
+    kRTC_Capacitor_2p = RTC_CR_SC2P_MASK,  /*!< 2pF capacitor load */
+    kRTC_Capacitor_4p = RTC_CR_SC4P_MASK,  /*!< 4pF capacitor load */
+    kRTC_Capacitor_8p = RTC_CR_SC8P_MASK,  /*!< 8pF capacitor load */
+    kRTC_Capacitor_16p = RTC_CR_SC16P_MASK /*!< 16pF capacitor load */
+} rtc_osc_cap_load_t;
+
+/*! @brief Structure is used to hold the date and time */
+typedef struct _rtc_datetime
+{
+    uint16_t year;  /*!< Range from 1970 to 2099.*/
+    uint8_t month;  /*!< Range from 1 to 12.*/
+    uint8_t day;    /*!< Range from 1 to 31 (depending on month).*/
+    uint8_t hour;   /*!< Range from 0 to 23.*/
+    uint8_t minute; /*!< Range from 0 to 59.*/
+    uint8_t second; /*!< Range from 0 to 59.*/
+} rtc_datetime_t;
+
+/*!
+ * @brief RTC config structure
+ *
+ * This structure holds the configuration settings for the RTC peripheral. To initialize this
+ * structure to reasonable defaults, call the RTC_GetDefaultConfig() function and pass a
+ * pointer to your config structure instance.
+ *
+ * The config struct can be made const so it resides in flash
+ */
+typedef struct _rtc_config
+{
+    bool wakeupSelect;             /*!< true: Wakeup pin outputs the 32KHz clock;
+                                        false:Wakeup pin used to wakeup the chip  */
+    bool updateMode;               /*!< true: Registers can be written even when locked under certain
+                                        conditions, false: No writes allowed when registers are locked */
+    bool supervisorAccess;         /*!< true: Non-supervisor accesses are allowed;
+                                        false: Non-supervisor accesses are not supported */
+    uint32_t compensationInterval; /*!< Compensation interval that is written to the CIR field in RTC TCR Register */
+    uint32_t compensationTime;     /*!< Compensation time that is written to the TCR field in RTC TCR Register */
+} rtc_config_t;
+
+/*******************************************************************************
+ * API
+ ******************************************************************************/
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/*!
+ * @name Initialization and deinitialization
+ * @{
+ */
+
+/*!
+ * @brief Ungates the RTC clock and configures the peripheral for basic operation.
+ *
+ * This function will issue a software reset if the timer invalid flag is set.
+ *
+ * @note This API should be called at the beginning of the application using the RTC driver.
+ *
+ * @param base   RTC peripheral base address
+ * @param config Pointer to user's RTC config structure.
+ */
+void RTC_Init(RTC_Type *base, const rtc_config_t *config);
+
+/*!
+ * @brief Stop the timer and gate the RTC clock
+ *
+ * @param base RTC peripheral base address
+ */
+static inline void RTC_Deinit(RTC_Type *base)
+{
+    /* Stop the RTC timer */
+    base->SR &= ~RTC_SR_TCE_MASK;
+
+    /* Gate the module clock */
+    CLOCK_DisableClock(kCLOCK_Rtc0);
+}
+
+/*!
+ * @brief Fill in the RTC config struct with the default settings
+ *
+ * The default values are:
+ * @code
+ *    config->wakeupSelect = false;
+ *    config->updateMode = false;
+ *    config->supervisorAccess = false;
+ *    config->compensationInterval = 0;
+ *    config->compensationTime = 0;
+ * @endcode
+ * @param config Pointer to user's RTC config structure.
+ */
+void RTC_GetDefaultConfig(rtc_config_t *config);
+
+/*! @}*/
+
+/*!
+ * @name Current Time & Alarm
+ * @{
+ */
+
+/*!
+ * @brief Sets the RTC date and time according to the given time structure.
+ *
+ * The RTC counter must be stopped prior to calling this function as writes to the RTC
+ * seconds register will fail if the RTC counter is running.
+ *
+ * @param base     RTC peripheral base address
+ * @param datetime Pointer to structure where the date and time details to set are stored
+ *
+ * @return kStatus_Success: Success in setting the time and starting the RTC
+ *         kStatus_InvalidArgument: Error because the datetime format is incorrect
+ */
+status_t RTC_SetDatetime(RTC_Type *base, const rtc_datetime_t *datetime);
+
+/*!
+ * @brief Gets the RTC time and stores it in the given time structure.
+ *
+ * @param base     RTC peripheral base address
+ * @param datetime Pointer to structure where the date and time details are stored.
+ */
+void RTC_GetDatetime(RTC_Type *base, rtc_datetime_t *datetime);
+
+/*!
+ * @brief Sets the RTC alarm time
+ *
+ * The function checks whether the specified alarm time is greater than the present
+ * time. If not, the function does not set the alarm and returns an error.
+ *
+ * @param base      RTC peripheral base address
+ * @param alarmTime Pointer to structure where the alarm time is stored.
+ *
+ * @return kStatus_Success: success in setting the RTC alarm
+ *         kStatus_InvalidArgument: Error because the alarm datetime format is incorrect
+ *         kStatus_Fail: Error because the alarm time has already passed
+ */
+status_t RTC_SetAlarm(RTC_Type *base, const rtc_datetime_t *alarmTime);
+
+/*!
+ * @brief Returns the RTC alarm time.
+ *
+ * @param base     RTC peripheral base address
+ * @param datetime Pointer to structure where the alarm date and time details are stored.
+ */
+void RTC_GetAlarm(RTC_Type *base, rtc_datetime_t *datetime);
+
+/*! @}*/
+
+/*!
+ * @name Interrupt Interface
+ * @{
+ */
+
+/*!
+ * @brief Enables the selected RTC interrupts.
+ *
+ * @param base RTC peripheral base address
+ * @param mask The interrupts to enable. This is a logical OR of members of the
+ *             enumeration ::rtc_interrupt_enable_t
+ */
+static inline void RTC_EnableInterrupts(RTC_Type *base, uint32_t mask)
+{
+    base->IER |= mask;
+}
+
+/*!
+ * @brief Disables the selected RTC interrupts.
+ *
+ * @param base RTC peripheral base address
+ * @param mask The interrupts to enable. This is a logical OR of members of the
+ *             enumeration ::rtc_interrupt_enable_t
+ */
+static inline void RTC_DisableInterrupts(RTC_Type *base, uint32_t mask)
+{
+    base->IER &= ~mask;
+}
+
+/*!
+ * @brief Gets the enabled RTC interrupts.
+ *
+ * @param base RTC peripheral base address
+ *
+ * @return The enabled interrupts. This is the logical OR of members of the
+ *         enumeration ::rtc_interrupt_enable_t
+ */
+static inline uint32_t RTC_GetEnabledInterrupts(RTC_Type *base)
+{
+    return (base->IER & (RTC_IER_TIIE_MASK | RTC_IER_TOIE_MASK | RTC_IER_TAIE_MASK | RTC_IER_TSIE_MASK));
+}
+
+/*! @}*/
+
+/*!
+ * @name Status Interface
+ * @{
+ */
+
+/*!
+ * @brief Gets the RTC status flags
+ *
+ * @param base RTC peripheral base address
+ *
+ * @return The status flags. This is the logical OR of members of the
+ *         enumeration ::rtc_status_flags_t
+ */
+static inline uint32_t RTC_GetStatusFlags(RTC_Type *base)
+{
+    return (base->SR & (RTC_SR_TIF_MASK | RTC_SR_TOF_MASK | RTC_SR_TAF_MASK));
+}
+
+/*!
+ * @brief  Clears the RTC status flags.
+ *
+ * @param base RTC peripheral base address
+ * @param mask The status flags to clear. This is a logical OR of members of the
+ *             enumeration ::rtc_status_flags_t
+ */
+void RTC_ClearStatusFlags(RTC_Type *base, uint32_t mask);
+
+/*! @}*/
+
+/*!
+ * @name Timer Start and Stop
+ * @{
+ */
+
+/*!
+ * @brief Starts the RTC time counter.
+ *
+ * After calling this function, the timer counter increments once a second provided SR[TOF] or
+ * SR[TIF] are not set.
+ *
+ * @param base RTC peripheral base address
+ */
+static inline void RTC_StartTimer(RTC_Type *base)
+{
+    base->SR |= RTC_SR_TCE_MASK;
+}
+
+/*!
+ * @brief Stops the RTC time counter.
+ *
+ * RTC's seconds register can be written to only when the timer is stopped.
+ *
+ * @param base RTC peripheral base address
+ */
+static inline void RTC_StopTimer(RTC_Type *base)
+{
+    base->SR &= ~RTC_SR_TCE_MASK;
+}
+
+/*! @}*/
+
+/*!
+ * @brief This function sets the specified capacitor configuration for the RTC oscillator.
+ *
+ * @param base    RTC peripheral base address
+ * @param capLoad Oscillator loads to enable. This is a logical OR of members of the
+ *                enumeration ::rtc_osc_cap_load_t
+ */
+static inline void RTC_SetOscCapLoad(RTC_Type *base, uint32_t capLoad)
+{
+    uint32_t reg = base->CR;
+
+    reg &= ~(RTC_CR_SC2P_MASK | RTC_CR_SC4P_MASK | RTC_CR_SC8P_MASK | RTC_CR_SC16P_MASK);
+    reg |= capLoad;
+
+    base->CR = reg;
+}
+
+/*!
+ * @brief Performs a software reset on the RTC module.
+ *
+ * This resets all RTC registers except for the SWR bit and the RTC_WAR and RTC_RAR
+ * registers. The SWR bit is cleared by software explicitly clearing it.
+ *
+ * @param base RTC peripheral base address
+ */
+static inline void RTC_Reset(RTC_Type *base)
+{
+    base->CR |= RTC_CR_SWR_MASK;
+    base->CR &= ~RTC_CR_SWR_MASK;
+
+    /* Set TSR register to 0x1 to avoid the timer invalid (TIF) bit being set in the SR register */
+    base->TSR = 1U;
+}
+
+#if defined(FSL_FEATURE_RTC_HAS_MONOTONIC) && (FSL_FEATURE_RTC_HAS_MONOTONIC)
+
+/*!
+ * @name Monotonic counter functions
+ * @{
+ */
+
+/*!
+ * @brief Reads the values of the Monotonic Counter High and Monotonic Counter Low and returns
+ *        them as a single value.
+ *
+ * @param base    RTC peripheral base address
+ * @param counter Pointer to variable where the value is stored.
+ */
+void RTC_GetMonotonicCounter(RTC_Type *base, uint64_t *counter);
+
+/*!
+ * @brief Writes values Monotonic Counter High and Monotonic Counter Low by decomposing
+ *        the given single value.
+ *
+ * @param base    RTC peripheral base address
+ * @param counter Counter value
+ */
+void RTC_SetMonotonicCounter(RTC_Type *base, uint64_t counter);
+
+/*!
+ * @brief Increments the Monotonic Counter by one.
+ *
+ * Increments the Monotonic Counter (registers RTC_MCLR and RTC_MCHR accordingly) by setting
+ * the monotonic counter enable (MER[MCE]) and then writing to the RTC_MCLR register. A write to the
+ * monotonic counter low that causes it to overflow also increments the monotonic counter high.
+ *
+ * @param base RTC peripheral base address
+ *
+ * @return kStatus_Success: success
+ *         kStatus_Fail: error occurred, either time invalid or monotonic overflow flag was found
+ */
+status_t RTC_IncrementMonotonicCounter(RTC_Type *base);
+
+/*! @}*/
+
+#endif /* FSL_FEATURE_RTC_HAS_MONOTONIC */
+
+#if defined(__cplusplus)
+}
+#endif
+
+/*! @}*/
+
+#endif /* _FSL_RTC_H_ */