From 44f7d1e90427b2e2cdd69cd9a9cc094a02c5ea56 Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Mon, 27 Jun 2016 13:46:01 +0200 Subject: k20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commit --- drivers/fsl_ewm.h | 241 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100644 drivers/fsl_ewm.h (limited to 'drivers/fsl_ewm.h') diff --git a/drivers/fsl_ewm.h b/drivers/fsl_ewm.h new file mode 100644 index 0000000..180575e --- /dev/null +++ b/drivers/fsl_ewm.h @@ -0,0 +1,241 @@ +/* + * 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_EWM_H_ +#define _FSL_EWM_H_ + +#include "fsl_common.h" + +/*! + * @addtogroup ewm + * @{ + */ + + +/******************************************************************************* + * Definitions + *******************************************************************************/ + +/*! @name Driver version */ +/*@{*/ +/*! @brief EWM driver version 2.0.1. */ +#define FSL_EWM_DRIVER_VERSION (MAKE_VERSION(2, 0, 1)) +/*@}*/ + +/*! @brief Describes EWM clock source. */ +#if defined(FSL_FEATURE_EWM_HAS_CLOCK_SELECT) && FSL_FEATURE_EWM_HAS_CLOCK_SELECT +typedef enum _ewm_lpo_clock_source +{ + kEWM_LpoClockSource0 = 0U, /*!< EWM clock sourced from lpo_clk[0]*/ + kEWM_LpoClockSource1 = 1U, /*!< EWM clock sourced from lpo_clk[1]*/ + kEWM_LpoClockSource2 = 2U, /*!< EWM clock sourced from lpo_clk[2]*/ + kEWM_LpoClockSource3 = 3U, /*!< EWM clock sourced from lpo_clk[3]*/ +} ewm_lpo_clock_source_t; +#endif /* FSL_FEATURE_EWM_HAS_CLOCK_SELECT */ + +/*! +* @brief Data structure for EWM configuration. +* +* This structure is used to configure the EWM. +*/ +typedef struct _ewm_config +{ + bool enableEwm; /*!< Enable EWM module */ + bool enableEwmInput; /*!< Enable EWM_in input */ + bool setInputAssertLogic; /*!< EWM_in signal assertion state */ + bool enableInterrupt; /*!< Enable EWM interrupt */ +#if defined(FSL_FEATURE_EWM_HAS_CLOCK_SELECT) && FSL_FEATURE_EWM_HAS_CLOCK_SELECT + ewm_lpo_clock_source_t clockSource; /*!< Clock source select */ +#endif /* FSL_FEATURE_EWM_HAS_CLOCK_SELECT */ +#if defined(FSL_FEATURE_EWM_HAS_PRESCALER) && FSL_FEATURE_EWM_HAS_PRESCALER + uint8_t prescaler; /*!< Clock prescaler value */ +#endif /* FSL_FEATURE_EWM_HAS_PRESCALER */ + uint8_t compareLowValue; /*!< Compare low-register value */ + uint8_t compareHighValue; /*!< Compare high-register value */ +} ewm_config_t; + +/*! + * @brief EWM interrupt configuration structure, default settings all disabled. + * + * This structure contains the settings for all of the EWM interrupt configurations. + */ +enum _ewm_interrupt_enable_t +{ + kEWM_InterruptEnable = EWM_CTRL_INTEN_MASK, /*!< Enable EWM to generate an interrupt*/ +}; + +/*! + * @brief EWM status flags. + * + * This structure contains the constants for the EWM status flags for use in the EWM functions. + */ +enum _ewm_status_flags_t +{ + kEWM_RunningFlag = EWM_CTRL_EWMEN_MASK, /*!< Running flag, set when EWM is enabled*/ +}; + +/******************************************************************************* + * API + *******************************************************************************/ + +#if defined(__cplusplus) +extern "C" { +#endif /* __cplusplus */ + +/*! + * @name EWM Initialization and De-initialization + * @{ + */ + +/*! + * @brief Initializes the EWM peripheral. + * + * This function is used to initialize the EWM. After calling, the EWM + * runs immediately according to the configuration. + * Note that except for interrupt enable control bit, other control bits and registers are write once after a + * CPU reset. Modifying them more than once generates a bus transfer error. + * + * Example: + * @code + * ewm_config_t config; + * EWM_GetDefaultConfig(&config); + * config.compareHighValue = 0xAAU; + * EWM_Init(ewm_base,&config); + * @endcode + * + * @param base EWM peripheral base address + * @param config The configuration of EWM +*/ +void EWM_Init(EWM_Type *base, const ewm_config_t *config); + +/*! + * @brief Deinitializes the EWM peripheral. + * + * This function is used to shut down the EWM. + * + * @param base EWM peripheral base address +*/ +void EWM_Deinit(EWM_Type *base); + +/*! + * @brief Initializes the EWM configuration structure. + * + * This function initializes the EWM configuration structure to default values. The default + * values are: + * @code + * ewmConfig->enableEwm = true; + * ewmConfig->enableEwmInput = false; + * ewmConfig->setInputAssertLogic = false; + * ewmConfig->enableInterrupt = false; + * ewmConfig->ewm_lpo_clock_source_t = kEWM_LpoClockSource0; + * ewmConfig->prescaler = 0; + * ewmConfig->compareLowValue = 0; + * ewmConfig->compareHighValue = 0xFEU; + * @endcode + * + * @param config Pointer to EWM configuration structure. + * @see ewm_config_t + */ +void EWM_GetDefaultConfig(ewm_config_t *config); + +/* @} */ + +/*! + * @name EWM functional Operation + * @{ + */ + +/*! + * @brief Enables the EWM interrupt. + * + * This function enables the EWM interrupt. + * + * @param base EWM peripheral base address + * @param mask The interrupts to enable + * The parameter can be combination of the following source if defined: + * @arg kEWM_InterruptEnable + */ +static inline void EWM_EnableInterrupts(EWM_Type *base, uint32_t mask) +{ + base->CTRL |= mask; +} + +/*! + * @brief Disables the EWM interrupt. + * + * This function enables the EWM interrupt. + * + * @param base EWM peripheral base address + * @param mask The interrupts to disable + * The parameter can be combination of the following source if defined: + * @arg kEWM_InterruptEnable + */ +static inline void EWM_DisableInterrupts(EWM_Type *base, uint32_t mask) +{ + base->CTRL &= ~mask; +} + +/*! + * @brief Gets EWM all status flags. + * + * This function gets all status flags. + * + * Example for getting Running Flag: + * @code + * uint32_t status; + * status = EWM_GetStatusFlags(ewm_base) & kEWM_RunningFlag; + * @endcode + * @param base EWM peripheral base address + * @return State of the status flag: asserted (true) or not-asserted (false).@see _ewm_status_flags_t + * - true: a related status flag has been set. + * - false: a related status flag is not set. + */ +static inline uint32_t EWM_GetStatusFlags(EWM_Type *base) +{ + return (base->CTRL & EWM_CTRL_EWMEN_MASK); +} + +/*! + * @brief Services the EWM. + * + * This function reset EWM counter to zero. + * + * @param base EWM peripheral base address +*/ +void EWM_Refresh(EWM_Type *base); + +/*@}*/ + +#if defined(__cplusplus) +} +#endif /* __cplusplus */ + +/*! @}*/ + +#endif /* _FSL_EWM_H_ */ -- cgit v1.2.3