/* * Copyright (c) 2015-2016, Freescale Semiconductor, Inc. * Copyright 2016-2017 NXP * All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ /** * @file diff_p_drv.h * @brief The diff_p_drv.h file describes the DIFF_P driver interface and structures. */ #ifndef DIFF_P_FI_H_ #define DIFF_P_FI_H_ /* Standard C Includes */ #include /* ISSDK Includes */ #include "diff_p.h" #include "sensor_io_i2c.h" #include "sensor_io_spi.h" #include "register_io_i2c.h" #include "register_io_spi.h" /******************************************************************************* * Definitions ******************************************************************************/ /*! * @brief This defines the sensor specific information for SPI. */ typedef struct { registerDeviceInfo_t deviceInfo; /*!< SPI device context. */ ARM_DRIVER_SPI *pCommDrv; /*!< Pointer to the spi driver. */ bool isInitialized; /*!< Whether sensor is intialized or not.*/ spiSlaveSpecificParams_t slaveParams; /*!< Slave Specific Params.*/ } diff_p_spi_sensorhandle_t; /*! * @brief This defines the sensor specific information for I2C. */ typedef struct { registerDeviceInfo_t deviceInfo; /*!< I2C device context. */ ARM_DRIVER_I2C *pCommDrv; /*!< Pointer to the i2c driver. */ bool isInitialized; /*!< whether sensor is intialized or not.*/ uint16_t slaveAddress; /*!< slave address.*/ } diff_p_i2c_sensorhandle_t; /*! @brief This structure defines the diff_p data buffer in Pressure Mode.*/ typedef struct { uint32_t timestamp; /*!< Time stamp value in micro-seconds. */ int16_t pressure; /*!< Sensor pressure output: unsigned 16-bits justified to MSBs. */ int8_t temperature; /*!< Sensor temperature output; 2's complement 8-bits justified to MSBs. */ } diff_p_pressuredata_t; /*! @def DIFF_P_SPI_MAX_MSG_SIZE * @brief The MAX size of SPI message. */ #define DIFF_P_SPI_MAX_MSG_SIZE (64) /*! @def DIFF_P_SPI_CMD_LEN * @brief The size of the Sensor specific SPI Header. */ #define DIFF_P_SPI_CMD_LEN (1) /*! @def DIFF_P_SS_ACTIVE_VALUE * @brief Is the Slave Select Pin Active Low or High. */ #define DIFF_P_SS_ACTIVE_VALUE SPI_SS_ACTIVE_LOW /******************************************************************************* * APIs ******************************************************************************/ /*! @brief The interface function to initialize the sensor. * @details This function initialize the sensor and sensor handle. * @param[in] pSensorHandle handle to the sensor. * @param[in] pBus pointer to the CMSIS API compatible I2C bus object. * @param[in] index the I2C device number. * @param[in] sAddress slave address of the device on the bus. * @param[in] whoami WHO_AM_I value of the device. * @constraints This should be the first API to be called. * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return ::DIFF_P_I2C_Initialize() returns the status. */ int32_t DIFF_P_I2C_Initialize( diff_p_i2c_sensorhandle_t *pSensorHandle, ARM_DRIVER_I2C *pBus, uint8_t index, uint16_t sAddress, uint8_t whoAmi); /*! @brief : The interface function to set the I2C Idle Task. * @param[in] : diff_p_i2c_sensorhandle_t *pSensorHandle, handle to the sensor handle. * @param[in] : registeridlefunction_t idleTask, function pointer to the function to execute on I2C Idle Time. * @param[in] : void *userParam, the pointer to the user idle ftask parameters. * @return void. * @constraints This can be called any number of times only after DIFF_P_I2C_Initialize(). * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No */ void DIFF_P_I2C_SetIdleTask(diff_p_i2c_sensorhandle_t *pSensorHandle, registeridlefunction_t idleTask, void *userParam); /*! @brief The interface function to configure he sensor. * @details This function configure the sensor with requested ODR, Range and registers in the regsiter pair array. * @param[in] pSensorHandle handle to the sensor. * @param[in] pRegWriteList pointer to the register list. * @constraints This can be called any number of times only after DIFF_P_I2C_Initialize(). * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return ::DIFF_P_I2C_Configure() returns the status. */ int32_t DIFF_P_I2C_Configure(diff_p_i2c_sensorhandle_t *pSensorHandle, const registerwritelist_t *pRegWriteList); /*! @brief The interface function to read the sensor data. * @details This function read the sensor data out from the device and returns raw data in a byte stream. * @param[in] pSensorHandle handle to the sensor. * @param[in] pReadList pointer to the list of device registers and values to read. * @param[out] pBuffer buffer which holds raw sensor data.This buffer may be back to back databuffer based * command read in the list. * @constraints This can be called only after DIFF_P_I2C_Initialize(). * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return ::DIFF_P_I2C_ReadData() returns the status . */ int32_t DIFF_P_I2C_ReadData(diff_p_i2c_sensorhandle_t *pSensorHandle, const registerreadlist_t *pReadList, uint8_t *pBuffer); /*! @brief The interface function to De Initialize sensor.. * @details This function made sensor in a power safe state and de initialize its handle. * @param[in] pSensorHandle handle to the sensor. * @constraints This can be called only after DIFF_P_I2C_Initialize() has been called. * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return ::DIFF_P_I2C_DeInit() returns the status. */ int32_t DIFF_P_I2C_DeInit(diff_p_i2c_sensorhandle_t *pSensorHandle); /*! @brief The interface function to initialize the sensor. * @details This function initializes the sensor and sensor handle. * @param[in] pSensorHandle handle to the sensor. * @param[in] pBus pointer to the CMSIS API compatible SPI bus object. * @param[in] index the I2C device number. * @param[in] pSlaveSelect slave select hndle of the device on the bus. * @param[in] whoami WHO_AM_I value of the device. * @constraints This should be the first API to be called. * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return ::DIFF_P_SPI_Initialize() returns the status . */ int32_t DIFF_P_SPI_Initialize( diff_p_spi_sensorhandle_t *pSensorHandle, ARM_DRIVER_SPI *pBus, uint8_t index, void *pSlaveSelect, uint8_t whoAmi); /*! @brief : The interface function to set the SPI Idle Task. * @param[in] : diff_p_spi_sensorhandle_t *pSensorHandle, handle to the sensor handle. * @param[in] : registeridlefunction_t idleTask, function pointer to the function to execute on SPI Idle Time. * @param[in] : void *userParam, the pointer to the user idle ftask parameters. * @return void. * @constraints This can be called any number of times only after DIFF_P_SPI_Initialize(). * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No */ void DIFF_P_SPI_SetIdleTask(diff_p_spi_sensorhandle_t *pSensorHandle, registeridlefunction_t idleTask, void *userParam); /*! @brief The interface function to configure he sensor. * @details This function configure the sensor with requested ODR, Range and registers in the regsiter pair array. * @param[in] pSensorHandle handle to the sensor. * @param[in] pRegWriteList pointer to the register list. * @constraints This can be called any number of times only after DIFF_P_SPI_Initialize(). * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return ::DIFF_P_SPI_Configure() returns the status . */ int32_t DIFF_P_SPI_Configure(diff_p_spi_sensorhandle_t *pSensorHandle, const registerwritelist_t *pRegWriteList); /*! @brief The interface function to read the sensor data. * @details This function read the sensor data out from the device and returns raw data in a byte stream. * @param[in] pSensorHandle handle to the sensor. * @param[in] pReadList pointer to the list of device registers and values to read. * @param[out] pBuffer buffer which holds raw sensor data.This buffer may be back to back databuffer based * command read in the list. * @constraints This can be called any number of times only after DIFF_P_SPI_Initialize(). * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return ::DIFF_P_SPI_ReadData() returns the status . */ int32_t DIFF_P_SPI_ReadData(diff_p_spi_sensorhandle_t *pSensorHandle, const registerreadlist_t *pReadList, uint8_t *pBuffer); /*! @brief The interface function to De Initialize sensor.. * @details This function made sensor in a power safe state and de initialize its handle. * @param[in] pSensorHandle handle to the sensor. * @constraints This can be called only after after DIFF_P_SPI_Initialize(). * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return ::DIFF_P_SPI_Deinit() returns the status . */ int32_t DIFF_P_SPI_DeInit(diff_p_spi_sensorhandle_t *pSensorHandle); /*! @brief The SPI Read Pre-Process function to generate Sensor specific SPI Message Header. * @details This function prepares the SPI Read Command Header with register address and * R/W bit encoded as the Sensor. * @param[out] pCmdOut handle to the output buffer. * @param[in] offset the address of the register to start reading from. * @param[in] size number of bytes to read. * @constraints None * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return :: None. */ void DIFF_P_SPI_ReadPreprocess(void *pCmdOut, uint32_t offset, uint32_t size); /*! @brief The SPI Write Pre-Process function to generate Sensor specific SPI Message Header. * @details This function prepares the SPI Write Command Header with register address and * R/W bit encoded as the Sensor. * @param[out] pCmdOut handle to the output buffer. * @param[in] offset the address of the register to start writing from. * @param[in] size number of bytes to write. * @constraints None * Application has to ensure that previous instances of these APIs have exited before invocation. * @reeentrant No * @return :: None. */ void DIFF_P_SPI_WritePreprocess(void *pCmdOut, uint32_t offset, uint32_t size, void *pWritebuffer); #endif // DIFF_P_FI_H_