rt-thread/bsp/frdm-k64f/device/MK64F12/fsl_cmt.h

402 lines
16 KiB
C

/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* Copyright 2016-2017 NXP
*
* 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 the copyright holder 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_CMT_H_
#define _FSL_CMT_H_
#include "fsl_common.h"
/*!
* @addtogroup cmt
* @{
*/
/*******************************************************************************
* Definitions
******************************************************************************/
/*! @name Driver version */
/*@{*/
/*! @brief CMT driver version 2.0.1. */
#define FSL_CMT_DRIVER_VERSION (MAKE_VERSION(2, 0, 1))
/*@}*/
/*!
* @brief The modes of CMT.
*/
typedef enum _cmt_mode
{
kCMT_DirectIROCtl = 0x00U, /*!< Carrier modulator is disabled and the IRO signal is directly in software control */
kCMT_TimeMode = 0x01U, /*!< Carrier modulator is enabled in time mode. */
kCMT_FSKMode = 0x05U, /*!< Carrier modulator is enabled in FSK mode. */
kCMT_BasebandMode = 0x09U /*!< Carrier modulator is enabled in baseband mode. */
} cmt_mode_t;
/*!
* @brief The CMT clock divide primary prescaler.
* The primary clock divider is used to divider the bus clock to
* get the intermediate frequency to approximately equal to 8 MHZ.
* When the bus clock is 8 MHZ, set primary prescaler to "kCMT_PrimaryClkDiv1".
*/
typedef enum _cmt_primary_clkdiv
{
kCMT_PrimaryClkDiv1 = 0U, /*!< The intermediate frequency is the bus clock divided by 1. */
kCMT_PrimaryClkDiv2 = 1U, /*!< The intermediate frequency is the bus clock divided by 2. */
kCMT_PrimaryClkDiv3 = 2U, /*!< The intermediate frequency is the bus clock divided by 3. */
kCMT_PrimaryClkDiv4 = 3U, /*!< The intermediate frequency is the bus clock divided by 4. */
kCMT_PrimaryClkDiv5 = 4U, /*!< The intermediate frequency is the bus clock divided by 5. */
kCMT_PrimaryClkDiv6 = 5U, /*!< The intermediate frequency is the bus clock divided by 6. */
kCMT_PrimaryClkDiv7 = 6U, /*!< The intermediate frequency is the bus clock divided by 7. */
kCMT_PrimaryClkDiv8 = 7U, /*!< The intermediate frequency is the bus clock divided by 8. */
kCMT_PrimaryClkDiv9 = 8U, /*!< The intermediate frequency is the bus clock divided by 9. */
kCMT_PrimaryClkDiv10 = 9U, /*!< The intermediate frequency is the bus clock divided by 10. */
kCMT_PrimaryClkDiv11 = 10U, /*!< The intermediate frequency is the bus clock divided by 11. */
kCMT_PrimaryClkDiv12 = 11U, /*!< The intermediate frequency is the bus clock divided by 12. */
kCMT_PrimaryClkDiv13 = 12U, /*!< The intermediate frequency is the bus clock divided by 13. */
kCMT_PrimaryClkDiv14 = 13U, /*!< The intermediate frequency is the bus clock divided by 14. */
kCMT_PrimaryClkDiv15 = 14U, /*!< The intermediate frequency is the bus clock divided by 15. */
kCMT_PrimaryClkDiv16 = 15U /*!< The intermediate frequency is the bus clock divided by 16. */
} cmt_primary_clkdiv_t;
/*!
* @brief The CMT clock divide secondary prescaler.
* The second prescaler can be used to divide the 8 MHZ CMT clock
* by 1, 2, 4, or 8 according to the specification.
*/
typedef enum _cmt_second_clkdiv
{
kCMT_SecondClkDiv1 = 0U, /*!< The CMT clock is the intermediate frequency frequency divided by 1. */
kCMT_SecondClkDiv2 = 1U, /*!< The CMT clock is the intermediate frequency frequency divided by 2. */
kCMT_SecondClkDiv4 = 2U, /*!< The CMT clock is the intermediate frequency frequency divided by 4. */
kCMT_SecondClkDiv8 = 3U /*!< The CMT clock is the intermediate frequency frequency divided by 8. */
} cmt_second_clkdiv_t;
/*!
* @brief The CMT infrared output polarity.
*/
typedef enum _cmt_infrared_output_polarity
{
kCMT_IROActiveLow = 0U, /*!< The CMT infrared output signal polarity is active-low. */
kCMT_IROActiveHigh = 1U /*!< The CMT infrared output signal polarity is active-high. */
} cmt_infrared_output_polarity_t;
/*!
* @brief The CMT infrared output signal state control.
*/
typedef enum _cmt_infrared_output_state
{
kCMT_IROCtlLow = 0U, /*!< The CMT Infrared output signal state is controlled to low. */
kCMT_IROCtlHigh = 1U /*!< The CMT Infrared output signal state is controlled to high. */
} cmt_infrared_output_state_t;
/*!
* @brief CMT interrupt configuration structure, default settings all disabled.
*
* This structure contains the settings for all of the CMT interrupt configurations.
*/
enum _cmt_interrupt_enable
{
kCMT_EndOfCycleInterruptEnable = CMT_MSC_EOCIE_MASK, /*!< CMT end of cycle interrupt. */
};
/*!
* @brief CMT carrier generator and modulator configuration structure
*
*/
typedef struct _cmt_modulate_config
{
uint8_t highCount1; /*!< The high-time for carrier generator first register. */
uint8_t lowCount1; /*!< The low-time for carrier generator first register. */
uint8_t highCount2; /*!< The high-time for carrier generator second register for FSK mode. */
uint8_t lowCount2; /*!< The low-time for carrier generator second register for FSK mode. */
uint16_t markCount; /*!< The mark time for the modulator gate. */
uint16_t spaceCount; /*!< The space time for the modulator gate. */
} cmt_modulate_config_t;
/*! @brief CMT basic configuration structure. */
typedef struct _cmt_config
{
bool isInterruptEnabled; /*!< Timer interrupt 0-disable, 1-enable. */
bool isIroEnabled; /*!< The IRO output 0-disabled, 1-enabled. */
cmt_infrared_output_polarity_t iroPolarity; /*!< The IRO polarity. */
cmt_second_clkdiv_t divider; /*!< The CMT clock divide prescaler. */
} cmt_config_t;
/*******************************************************************************
* API
******************************************************************************/
#if defined(__cplusplus)
extern "C" {
#endif
/*!
* @name Initialization and deinitialization
* @{
*/
/*!
* @brief Gets the CMT default configuration structure. This API
* gets the default configuration structure for the CMT_Init().
* Use the initialized structure unchanged in CMT_Init() or modify
* fields of the structure before calling the CMT_Init().
*
* @param config The CMT configuration structure pointer.
*/
void CMT_GetDefaultConfig(cmt_config_t *config);
/*!
* @brief Initializes the CMT module.
*
* This function ungates the module clock and sets the CMT internal clock,
* interrupt, and infrared output signal for the CMT module.
*
* @param base CMT peripheral base address.
* @param config The CMT basic configuration structure.
* @param busClock_Hz The CMT module input clock - bus clock frequency.
*/
void CMT_Init(CMT_Type *base, const cmt_config_t *config, uint32_t busClock_Hz);
/*!
* @brief Disables the CMT module and gate control.
*
* This function disables CMT modulator, interrupts, and gates the
* CMT clock control. CMT_Init must be called to use the CMT again.
*
* @param base CMT peripheral base address.
*/
void CMT_Deinit(CMT_Type *base);
/*! @}*/
/*!
* @name Basic Control Operations
* @{
*/
/*!
* @brief Selects the mode for CMT.
*
* @param base CMT peripheral base address.
* @param mode The CMT feature mode enumeration. See "cmt_mode_t".
* @param modulateConfig The carrier generation and modulator configuration.
*/
void CMT_SetMode(CMT_Type *base, cmt_mode_t mode, cmt_modulate_config_t *modulateConfig);
/*!
* @brief Gets the mode of the CMT module.
*
* @param base CMT peripheral base address.
* @return The CMT mode.
* kCMT_DirectIROCtl Carrier modulator is disabled; the IRO signal is directly in software control.
* kCMT_TimeMode Carrier modulator is enabled in time mode.
* kCMT_FSKMode Carrier modulator is enabled in FSK mode.
* kCMT_BasebandMode Carrier modulator is enabled in baseband mode.
*/
cmt_mode_t CMT_GetMode(CMT_Type *base);
/*!
* @brief Gets the actual CMT clock frequency.
*
* @param base CMT peripheral base address.
* @param busClock_Hz CMT module input clock - bus clock frequency.
* @return The CMT clock frequency.
*/
uint32_t CMT_GetCMTFrequency(CMT_Type *base, uint32_t busClock_Hz);
/*!
* @brief Sets the primary data set for the CMT carrier generator counter.
*
* This function sets the high-time and low-time of the primary data set for the
* CMT carrier generator counter to control the period and the duty cycle of the
* output carrier signal.
* If the CMT clock period is Tcmt, the period of the carrier generator signal equals
* (highCount + lowCount) * Tcmt. The duty cycle equals to highCount / (highCount + lowCount).
*
* @param base CMT peripheral base address.
* @param highCount The number of CMT clocks for carrier generator signal high time,
* integer in the range of 1 ~ 0xFF.
* @param lowCount The number of CMT clocks for carrier generator signal low time,
* integer in the range of 1 ~ 0xFF.
*/
static inline void CMT_SetCarrirGenerateCountOne(CMT_Type *base, uint32_t highCount, uint32_t lowCount)
{
assert(highCount <= CMT_CGH1_PH_MASK);
assert(highCount);
assert(lowCount <= CMT_CGL1_PL_MASK);
assert(lowCount);
base->CGH1 = highCount;
base->CGL1 = lowCount;
}
/*!
* @brief Sets the secondary data set for the CMT carrier generator counter.
*
* This function is used for FSK mode setting the high-time and low-time of the secondary
* data set CMT carrier generator counter to control the period and the duty cycle
* of the output carrier signal.
* If the CMT clock period is Tcmt, the period of the carrier generator signal equals
* (highCount + lowCount) * Tcmt. The duty cycle equals highCount / (highCount + lowCount).
*
* @param base CMT peripheral base address.
* @param highCount The number of CMT clocks for carrier generator signal high time,
* integer in the range of 1 ~ 0xFF.
* @param lowCount The number of CMT clocks for carrier generator signal low time,
* integer in the range of 1 ~ 0xFF.
*/
static inline void CMT_SetCarrirGenerateCountTwo(CMT_Type *base, uint32_t highCount, uint32_t lowCount)
{
assert(highCount <= CMT_CGH2_SH_MASK);
assert(highCount);
assert(lowCount <= CMT_CGL2_SL_MASK);
assert(lowCount);
base->CGH2 = highCount;
base->CGL2 = lowCount;
}
/*!
* @brief Sets the modulation mark and space time period for the CMT modulator.
*
* This function sets the mark time period of the CMT modulator counter
* to control the mark time of the output modulated signal from the carrier generator output signal.
* If the CMT clock frequency is Fcmt and the carrier out signal frequency is fcg:
* - In Time and Baseband mode: The mark period of the generated signal equals (markCount + 1) / (Fcmt/8).
* The space period of the generated signal equals spaceCount / (Fcmt/8).
* - In FSK mode: The mark period of the generated signal equals (markCount + 1)/fcg.
* The space period of the generated signal equals spaceCount / fcg.
*
* @param base Base address for current CMT instance.
* @param markCount The number of clock period for CMT modulator signal mark period,
* in the range of 0 ~ 0xFFFF.
* @param spaceCount The number of clock period for CMT modulator signal space period,
* in the range of the 0 ~ 0xFFFF.
*/
void CMT_SetModulateMarkSpace(CMT_Type *base, uint32_t markCount, uint32_t spaceCount);
/*!
* @brief Enables or disables the extended space operation.
*
* This function is used to make the space period longer
* for time, baseband, and FSK modes.
*
* @param base CMT peripheral base address.
* @param enable True enable the extended space, false disable the extended space.
*/
static inline void CMT_EnableExtendedSpace(CMT_Type *base, bool enable)
{
if (enable)
{
base->MSC |= CMT_MSC_EXSPC_MASK;
}
else
{
base->MSC &= ~CMT_MSC_EXSPC_MASK;
}
}
/*!
* @brief Sets the IRO (infrared output) signal state.
*
* Changes the states of the IRO signal when the kCMT_DirectIROMode mode is set
* and the IRO signal is enabled.
*
* @param base CMT peripheral base address.
* @param state The control of the IRO signal. See "cmt_infrared_output_state_t"
*/
void CMT_SetIroState(CMT_Type *base, cmt_infrared_output_state_t state);
/*!
* @brief Enables the CMT interrupt.
*
* This function enables the CMT interrupts according to the provided mask if enabled.
* The CMT only has the end of the cycle interrupt - an interrupt occurs at the end
* of the modulator cycle. This interrupt provides a means for the user
* to reload the new mark/space values into the CMT modulator data registers
* and verify the modulator mark and space.
* For example, to enable the end of cycle, do the following.
* @code
* CMT_EnableInterrupts(CMT, kCMT_EndOfCycleInterruptEnable);
* @endcode
* @param base CMT peripheral base address.
* @param mask The interrupts to enable. Logical OR of @ref _cmt_interrupt_enable.
*/
static inline void CMT_EnableInterrupts(CMT_Type *base, uint32_t mask)
{
base->MSC |= mask;
}
/*!
* @brief Disables the CMT interrupt.
*
* This function disables the CMT interrupts according to the provided maskIf enabled.
* The CMT only has the end of the cycle interrupt.
* For example, to disable the end of cycle, do the following.
* @code
* CMT_DisableInterrupts(CMT, kCMT_EndOfCycleInterruptEnable);
* @endcode
*
* @param base CMT peripheral base address.
* @param mask The interrupts to enable. Logical OR of @ref _cmt_interrupt_enable.
*/
static inline void CMT_DisableInterrupts(CMT_Type *base, uint32_t mask)
{
base->MSC &= ~mask;
}
/*!
* @brief Gets the end of the cycle status flag.
*
* The flag is set:
* - When the modulator is not currently active and carrier and modulator
* are set to start the initial CMT transmission.
* - At the end of each modulation cycle when the counter is reloaded and
* the carrier and modulator are enabled.
* @param base CMT peripheral base address.
* @return Current status of the end of cycle status flag
* @arg non-zero: End-of-cycle has occurred.
* @arg zero: End-of-cycle has not yet occurred since the flag last cleared.
*/
static inline uint32_t CMT_GetStatusFlags(CMT_Type *base)
{
return base->MSC & CMT_MSC_EOCF_MASK;
}
/*! @}*/
#if defined(__cplusplus)
}
#endif
/*! @}*/
#endif /* _FSL_CMT_H_*/