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Diff: TARGET_K64F/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_KPSDK_CODE/hal/i2c/fsl_i2c_hal.h
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_K64F/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_KPSDK_CODE/hal/i2c/fsl_i2c_hal.h Mon Apr 07 18:28:36 2014 +0100 @@ -0,0 +1,814 @@ +/* + * Copyright (c) 2013 - 2014, 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. + */ +#if !defined(__FSL_I2C_HAL_H__) +#define __FSL_I2C_HAL_H__ + +#include <assert.h> +#include <stdbool.h> +#include "fsl_i2c_features.h" +#include "fsl_device_registers.h" + +/*! + * @addtogroup i2c_hal + * @{ + */ + +/******************************************************************************* + * Definitions + ******************************************************************************/ + +/*! @brief I2C status return codes*/ +typedef enum _i2c_status +{ + kStatus_I2C_Success = 0, + kStatus_I2C_OutOfRange, + kStatus_I2C_InvalidArgument, + kStatus_I2C_Fail, + kStatus_I2C_Busy, /*!< The master is already performing a transfer.*/ + kStatus_I2C_Timeout, /*!< The transfer timed out.*/ + kStatus_I2C_ReceivedNak, /*!< The slave device sent a NAK in response to a byte.*/ + kStatus_I2C_SlaveTxUnderrun, /*!< I2C Slave TX Underrun error.*/ + kStatus_I2C_SlaveRxOverrun, /*!< I2C Slave RX Overrun error.*/ + kStatus_I2C_AribtrationLost, /*!< I2C Arbitration Lost error.*/ +} i2c_status_t; + +/*! @brief Direction of master and slave transfers*/ +typedef enum _i2c_transmit_receive_mode { + kI2CReceive = 0, /*!< Master and slave receive.*/ + kI2CTransmit = 1 /*!< Master and slave transmit.*/ +} i2c_transmit_receive_mode_t; + +/*! + * @brief I2C module configuration + * + * Pass an instance of this structure to the i2c_hal_init() to configure the entire I2C peripheral + * in a single function call. + */ +typedef struct I2CConfig { + bool enableModule; /*!< Whether the I2C peripheral operation is enabled.*/ + uint32_t baudRate_kbps; /*!< Requested baud rate in kilobits per second, for example, 100 or 400. Pass zero to not set the baud rate.*/ + bool useIndependentSlaveBaud; /*!< Enables independent slave mode baud rate at maximum frequency.*/ + bool enableInterrupt; /*!< Enable for the I2C interrupt.*/ + bool enableDma; /*!< Enable DMA transfer signalling.*/ + bool enableHighDrive; /*!< Enable high drive pin mode.*/ + bool enableWakeup; /*!< Enable low power wakeup.*/ + uint8_t glitchFilterWidth; /*!< Specify the glitch filter width in terms of bus clock cycles. Set this value to zero to disable the glitch filter.*/ + uint16_t slaveAddress; /*!< 7-bit or 10-bit slave address.*/ + uint8_t upperSlaveAddress; /*!< 7-bit upper slave address, or zero to disable. If 10-bit addresses are enabled, the top 3 bits are provided by the @a slaveAddress field.*/ + bool use10bitSlaveAddress; /*!< Controls whether 10-bit slave addresses are enabled.*/ + bool enableGeneralCallAddress; /*!< Enable general call address matching.*/ + bool enableRangeAddressMatch; /*!< Determines if addresses between @a slaveAddress and @a upperSlaveAddress are matched. Both of those fields must be non-zero.*/ + +#if FSL_FEATURE_I2C_HAS_STOP_DETECT + bool enableStopModeHoldoff; /*!< Option to hold off CPU low power stop mode until the current byte transfer is complete.*/ + bool enableBusStopInterrupt; /*!< Enable for the bus stop detection interrupt.*/ +#endif /* FSL_FEATURE_I2C_HAS_STOP_DETECT*/ +} i2c_config_t; + +/******************************************************************************* + * API + ******************************************************************************/ + +#if defined(__cplusplus) +extern "C" { +#endif + +/*! @name Module controls*/ +/*@{*/ + +/*! + * @brief Initializes and configures the I2C peripheral. + * + * @param instance The I2C peripheral instance number + * @param config Pointer to the configuration settings + * @param sourceClockInHz I2C source input clock in Hertz. + */ +void i2c_hal_init(uint32_t instance, const i2c_config_t * config, uint32_t sourceClockInHz); + +/*! + * @brief Restores the I2C peripheral to reset state. + * + * @param instance The I2C peripheral instance number + */ +void i2c_hal_reset(uint32_t instance); + +/*! + * @brief Enables the I2C module operation. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_enable(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_C1_SET(instance, BM_I2C_C1_IICEN); +} + +/*! + * @brief Disables the I2C module operation. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_disable(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_C1_CLR(instance, BM_I2C_C1_IICEN); +} + +/*@}*/ + +/*! @name DMA*/ +/*@{*/ + +/*! + * @brief Enables or disables the DMA support. + * + * @param instance The I2C peripheral instance number + * @param enable Pass true to enable DMA transfer signalling + */ +static inline void i2c_hal_set_dma_enable(uint32_t instance, bool enable) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_C1_DMAEN(instance, (uint8_t)enable); +} + +/*@}*/ + +/*! @name Pin functions*/ +/*@{*/ + +/*! + * @brief Controls the drive capability of the I2C pads. + * + * @param instance The I2C peripheral instance number + * @param enable Passing true will enable high drive mode of the I2C pads. False sets normal + * drive mode. + */ +static inline void i2c_hal_set_high_drive(uint32_t instance, bool enable) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_C2_HDRS(instance, (uint8_t)enable); +} + +/*! + * @brief Controls the width of the programmable glitch filter. + * + * Controls the width of the glitch, in terms of bus clock cycles, that the filter must absorb. + * The filter does not allow any glitch whose size is less than or equal to this width setting, + * to pass. + * + * @param instance The I2C peripheral instance number + * @param glitchWidth Maximum width in bus clock cycles of the glitches that is filtered. + * Pass zero to disable the glitch filter. + */ +static inline void i2c_hal_set_glitch_filter(uint32_t instance, uint8_t glitchWidth) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_FLT_FLT(instance, glitchWidth); +} + +/*@}*/ + +/*! @name Low power*/ +/*@{*/ + +/*! + * @brief Controls the I2C wakeup enable. + * + * The I2C module can wake the MCU from low power mode with no peripheral bus running when + * slave address matching occurs. + * + * @param instance The I2C peripheral instance number. + * @param enable true - Enables the wakeup function in low power mode.<br> + * false - Normal operation. No interrupt is generated when address matching in + * low power mode. + */ +static inline void i2c_hal_set_wakeup_enable(uint32_t instance, bool enable) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_C1_WUEN(instance, (uint8_t)enable); +} + +#if FSL_FEATURE_I2C_HAS_STOP_HOLD_OFF +/*! + * @brief Controls the stop mode hold off. + * + * This function lets you enable the hold off entry to low power stop mode when any data transmission + * or reception is occurring. + * + * @param instance The I2C peripheral instance number + * @param enable false - Stop hold off is disabled. The MCU's entry to stop mode is not gated.<br> + * true - Stop hold off is enabled. + */ + +static inline void i2c_hal_set_stop_holdoff(uint32_t instance, bool enable) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_FLT_SHEN(instance, (uint8_t)enable); +} +#endif /* FSL_FEATURE_I2C_HAS_STOP_HOLD_OFF*/ + +/*@}*/ + +/*! @name Baud rate*/ +/*@{*/ + +/*! + * brief Returns the maximum supported baud rate in kilohertz. + * + * @param instance The I2C peripheral instance number + * @param sourceClockInHz I2C source input clock in Hertz + * @return The maximum baud rate in kilohertz + */ +uint32_t i2c_hal_get_max_baud(uint32_t instance, uint32_t sourceClockInHz); + +/*! + * @brief Sets the I2C bus frequency for master transactions. + * + * @param instance The I2C peripheral instance number + * @param sourceClockInHz I2C source input clock in Hertz + * @param kbps Requested bus frequency in kilohertz. Common values are either 100 or 400. + * @param absoluteError_Hz If this parameter is not NULL, it is filled in with the + * difference in Hertz between the requested bus frequency and the closest frequency + * possible given available divider values. + * + * @retval kStatus_Success The baud rate was changed successfully. However, there is no + * guarantee on the minimum error. If you want to ensure that the baud was set to within + * a certain error, then use the @a absoluteError_Hz parameter. + * @retval kStatus_OutOfRange The requested baud rate was not within the range of rates + * supported by the peripheral. + */ +i2c_status_t i2c_hal_set_baud(uint32_t instance, uint32_t sourceClockInHz, uint32_t kbps, + uint32_t * absoluteError_Hz); + +/*! + * @brief Sets the I2C baud rate multiplier and table entry. + * + * Use this function to set the I2C bus frequency register values directly, if they are + * known in advance. + * + * @param instance The I2C peripheral instance number + * @param mult Value of the MULT bitfield, ranging from 0-2. + * @param icr The ICR bitfield value, which is the index into an internal table in the I2C + * hardware that selects the baud rate divisor and SCL hold time. + */ +static inline void i2c_hal_set_baud_icr(uint32_t instance, uint8_t mult, uint8_t icr) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_F_WR(instance, BF_I2C_F_MULT(mult) | BF_I2C_F_ICR(icr)); +} + +/*! + * @brief Slave baud rate control + * + * Enables an independent slave mode baud rate at the maximum frequency. This forces clock stretching + * on the SCL in very fast I2C modes. + * + * @param instance The I2C peripheral instance number + * @param enable true - Slave baud rate is independent of the master baud rate;<br> + * false - The slave baud rate follows the master baud rate and clock stretching may occur. + */ +static inline void i2c_hal_set_independent_slave_baud(uint32_t instance, bool enable) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_C2_SBRC(instance, (uint8_t)enable); +} + +/*@}*/ + +/*! @name Bus operations*/ +/*@{*/ + +/*! + * @brief Sends a START or a Repeated START signal on the I2C bus. + * + * This function is used to initiate a new master mode transfer by sending the START signal. It + * is also used to send a Repeated START signal when a transfer is already in progress. + * + * @param instance The I2C peripheral instance number + */ +void i2c_hal_send_start(uint32_t instance); + +/*! + * @brief Sends a STOP signal on the I2C bus. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_send_stop(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + assert(HW_I2C_C1(instance).B.MST == 1); + HW_I2C_C1_CLR(instance, BM_I2C_C1_MST | BM_I2C_C1_TX); +} + +/*! + * @brief Selects either transmit or receive modes. + * + * @param instance The I2C peripheral instance number + * @param mode Specifies either transmit mode or receive mode. The valid values are: + * - #kI2CTransmit + * - #kI2CReceive + */ +static inline void i2c_hal_set_direction(uint32_t instance, i2c_transmit_receive_mode_t mode) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_C1_TX(instance, (uint8_t)mode); +} + +/*! + * @brief Returns the currently selected transmit or receive mode. + * + * @param instance The I2C peripheral instance number + * @retval #kI2CTransmit I2C is configured for master or slave transmit mode. + * @retval #kI2CReceive I2C is configured for master or slave receive mode. + */ +static inline i2c_transmit_receive_mode_t i2c_hal_get_direction(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return HW_I2C_C1(instance).B.TX ? kI2CTransmit : kI2CReceive; +} + +/*! + * @brief Causes an ACK to be sent on the bus. + * + * This function specifies that an ACK signal is sent in response to the next received byte. + * + * Note that the behavior of this function is changed when the I2C peripheral is placed in + * Fast ACK mode. In this case, this function causes an ACK signal to be sent in + * response to the current byte, rather than the next received byte. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_send_ack(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_C1_CLR(instance, BM_I2C_C1_TXAK); +} + +/*! + * @brief Causes a NAK to be sent on the bus. + * + * This function specifies that a NAK signal is sent in response to the next received byte. + * + * Note that the behavior of this function is changed when the I2C peripheral is placed in the + * Fast ACK mode. In this case, this function causes an NAK signal to be sent in + * response to the current byte, rather than the next received byte. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_send_nak(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_C1_SET(instance, BM_I2C_C1_TXAK); +} + +/*@}*/ + +/*! @name Data transfer*/ +/*@{*/ + +/*! + * @brief Returns the last byte of data read from the bus and initiate another read. + * + * In a master receive mode, calling this function initiates receiving the next byte of data. + * + * @param instance The I2C peripheral instance number + * @return This function returns the last byte received while the I2C module is configured in master + * receive or slave receive mode. + */ +static inline uint8_t i2c_hal_read(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return HW_I2C_D_RD(instance); +} + +/*! + * @brief Writes one byte of data to the I2C bus. + * + * When this function is called in the master transmit mode, a data transfer is initiated. In slave + * mode, the same function is available after an address match occurs. + * + * In a master transmit mode, the first byte of data written following the start bit or repeated + * start bit is used for the address transfer and must consist of the slave address (in bits 7-1) + * concatenated with the required R/\#W bit (in position bit 0). + * + * @param instance The I2C peripheral instance number + * @param data The byte of data to transmit + */ +static inline void i2c_hal_write(uint32_t instance, uint8_t data) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_D_WR(instance, data); +} + +/*@}*/ + +/*! @name Slave address*/ +/*@{*/ + +/*! + * @brief Sets the primary 7-bit slave address. + * + * @param instance The I2C peripheral instance number + * @param address The slave address in the upper 7 bits. Bit 0 of this value must be 0. + */ +void i2c_hal_set_slave_address_7bit(uint32_t instance, uint8_t address); + +/*! + * @brief Sets the primary slave address and enables 10-bit address mode. + * + * @param instance The I2C peripheral instance number + * @param address The 10-bit slave address, in bits [10:1] of the value. Bit 0 must be 0. + */ +void i2c_hal_set_slave_address_10bit(uint32_t instance, uint16_t address); + +/*! + * @brief Controls whether the general call address is recognized. + * + * @param instance The I2C peripheral instance number + * @param enable Whether to enable the general call address. + */ +static inline void i2c_hal_set_general_call_enable(uint32_t instance, bool enable) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_C2_GCAEN(instance, (uint8_t)enable); +} + +/*! + * @brief Enables or disables the slave address range matching. + * + * @param instance The I2C peripheral instance number + * @param enable Pass true to enable the range address matching. You must also call the + * i2c_hal_set_upper_slave_address_7bit() to set the upper address. + */ +static inline void i2c_hal_set_slave_range_address_enable(uint32_t instance, bool enable) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + BW_I2C_C2_RMEN(instance, (uint8_t)enable); +} + +/*! + * @brief Sets the upper slave address. + * + * This slave address is used as a secondary slave address. If range address + * matching is enabled, this slave address acts as the upper bound on the slave address + * range. + * + * This function sets only a 7-bit slave address. If 10-bit addressing was enabled by calling the + * i2c_hal_set_slave_address_10bit(), then the top 3 bits set with that function are also used + * with the address set with this function to form a 10-bit address. + * + * Passing 0 for the @a address parameter disables matching the upper slave address. + * + * @param instance The I2C peripheral instance number + * @param address The upper slave address in the upper 7 bits. Bit 0 of this value must be 0. + * This address must be greater than the primary slave address that is set by + * calling the i2c_hal_set_slave_address_7bit(). + */ +static inline void i2c_hal_set_upper_slave_address_7bit(uint32_t instance, uint8_t address) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + assert((address & 1) == 0); + assert((address == 0) || (address > HW_I2C_A1_RD(instance))); + HW_I2C_RA_WR(instance, address); +} + +/*@}*/ + +/*! @name Status*/ +/*@{*/ + +/*! + * @brief Returns whether the I2C module is in master mode. + * + * @param instance The I2C peripheral instance number + * @retval true The module is in master mode, which implies it is also performing a transfer. + * @retval false The module is in slave mode. + */ +static inline bool i2c_hal_is_master(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_C1(instance).B.MST; +} + +/*! + * @brief Gets the transfer complete flag. + * + * @param instance The I2C peripheral instance number + * @retval true Transfer is complete. + * @retval false Transfer is in progress. + */ +static inline bool i2c_hal_is_transfer_complete(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_S(instance).B.TCF; +} + +/*! + * @brief Returns whether the I2C slave was addressed. + * + * @param instance The I2C peripheral instance number + * @retval true Addressed as slave. + * @retval false Not addressed. + */ +static inline bool i2c_hal_is_addressed_as_slave(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_S(instance).B.IAAS; +} + +/*! + * @brief Determines whether the I2C bus is busy. + * + * @param instance The I2C peripheral instance number + * @retval true Bus is busy. + * @retval false Bus is idle. + */ +static inline bool i2c_hal_is_bus_busy(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_S(instance).B.BUSY; +} + +/*! + * @brief Returns whether the arbitration procedure was lost. + * + * @param instance The I2C peripheral instance number + * @retval true Loss of arbitration + * @retval false Standard bus operation + */ +static inline bool i2c_hal_was_arbitration_lost(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_S(instance).B.ARBL; +} + +/*! + * @brief Clears the arbitration lost flag. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_clear_arbitration_lost(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_S_WR(instance, BM_I2C_S_ARBL); +} + +/*! + * @brief Get the range address match flag. + * + * @param instance The I2C peripheral instance number + * @retval true Addressed as slave. + * @retval false Not addressed. + */ +static inline bool i2c_hal_is_range_address_match(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_S(instance).B.RAM; +} + +/*! + * @brief Returns whether the I2C slave was addressed in read or write mode. + * + * @param instance The I2C peripheral instance number + * @retval #kI2CReceive Slave receive, master writing to slave + * @retval #kI2CTransmit Slave transmit, master reading from slave + */ +static inline i2c_transmit_receive_mode_t i2c_hal_get_slave_direction(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return HW_I2C_S(instance).B.SRW ? kI2CTransmit : kI2CReceive; +} + +/*! + * @brief Returns whether an ACK was received after the last byte was transmitted. + * + * @param instance The I2C peripheral instance number + * @retval true Acknowledges that the signal was received after the completion of one byte of data + * transmission on the bus. + * @retval false No acknowledgement of the signal is detected. + */ +static inline bool i2c_hal_get_receive_ack(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)!(HW_I2C_S(instance).B.RXAK); +} + +/*@}*/ + +/*! @name Interrupt*/ +/*@{*/ + +/*! + * @brief Enables the I2C interrupt requests. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_enable_interrupt(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_C1_SET(instance, BM_I2C_C1_IICIE); +} + +/*! + * @brief Disables the I2C interrupt requests. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_disable_interrupt(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_C1_CLR(instance, BM_I2C_C1_IICIE); +} + +/*! + * @brief Returns whether the I2C interrupts are enabled. + * + * @param instance The I2C peripheral instance number + * @retval true I2C interrupts are enabled. + * @retval false I2C interrupts are disabled. + */ +static inline bool i2c_hal_is_interrupt_enabled(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_C1(instance).B.IICIE; +} + +/*! + * @brief Returns the current I2C interrupt flag. + * + * @param instance The I2C peripheral instance number + * @retval true An interrupt is pending. + * @retval false No interrupt is pending. + */ +static inline bool i2c_hal_get_interrupt_status(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_S(instance).B.IICIF; +} + +/*! + * @brief Clears the I2C interrupt if set. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_clear_interrupt(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_S_SET(instance, BM_I2C_S_IICIF); +} + +/*@}*/ + +#if FSL_FEATURE_I2C_HAS_STOP_DETECT + +/*! @name Bus stop detection status*/ +/*@{*/ + +/*! + * @brief Gets the flag indicating a STOP signal was detected on the I2C bus. + * + * @param instance The I2C peripheral instance number + * @retval true STOP signal detected on bus. + * @retval false No STOP signal was detected on the bus. + */ +static inline bool i2c_hal_get_stop_detect(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_FLT(instance).B.STOPF; +} + +/*! + * @brief Clears the bus STOP signal detected flag. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_clear_stop_detect(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_FLT_SET(instance, BM_I2C_FLT_STOPF); +} + +/*@}*/ +#if FSL_FEATURE_I2C_HAS_START_DETECT + +/*! @name Bus stop detection interrupt*/ +/*@{*/ + +/*! + * @brief Enables the I2C bus stop detection interrupt. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_enable_bus_stop_interrupt(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_FLT_SET(instance, BM_I2C_FLT_SSIE); +} + +/*! + * @brief Disables the I2C bus stop detection interrupt. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_disable_bus_stop_interrupt(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_FLT_CLR(instance, BM_I2C_FLT_SSIE); +} + +/*! + * @brief Returns whether the I2C bus stop detection interrupts are enabled. + * + * @param instance The I2C peripheral instance number + * @retval true Stop detect interrupts are enabled. + * @retval false Stop detect interrupts are disabled. + */ +static inline bool i2c_hal_is_bus_stop_interrupt_enabled(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_FLT(instance).B.SSIE; +} + +#else + +/*! @name Bus stop detection interrupt*/ +/*@{*/ + +/*! + * @brief Enables the I2C bus stop detection interrupt. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_enable_bus_stop_interrupt(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_FLT_SET(instance, BM_I2C_FLT_STOPIE); +} + +/*! + * @brief Disables the I2C bus stop detection interrupt. + * + * @param instance The I2C peripheral instance number + */ +static inline void i2c_hal_disable_bus_stop_interrupt(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + HW_I2C_FLT_CLR(instance, BM_I2C_FLT_STOPIE); +} + +/*! + * @brief Returns whether the I2C bus stop detection interrupts are enabled. + * + * @param instance The I2C peripheral instance number + * @retval true Stop detect interrupts are enabled. + * @retval false Stop detect interrupts are disabled. + */ +static inline bool i2c_hal_is_bus_stop_interrupt_enabled(uint32_t instance) +{ + assert(instance < HW_I2C_INSTANCE_COUNT); + return (bool)HW_I2C_FLT(instance).B.STOPIE; +} + +#endif /* FSL_FEATURE_I2C_HAS_START_DETECT*/ + +/*@}*/ +#endif /* FSL_FEATURE_I2C_HAS_STOP_DETECT*/ + +#if defined(__cplusplus) +} +#endif + +/*! @}*/ + +#endif /* __FSL_I2C_HAL_H__*/ +/******************************************************************************* + * EOF + ******************************************************************************/ +