117 lines
5.4 KiB
C
117 lines
5.4 KiB
C
/*
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* Copyright (c) 2015 - 2016, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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/**
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* @file mma845x_drv.h
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* @brief The mma845x_drv.h file describes the MMA845x driver interface and structures.
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*/
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#ifndef MMA845x_DRV_H_
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#define MMA845x_DRV_H_
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/* Standard C Includes */
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#include <stdint.h>
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/* ISSDK Includes */
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#include "mma845x.h"
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#include "sensor_io_i2c.h"
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#include "register_io_i2c.h"
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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/*! @brief This defines the sensor specific information. */
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typedef struct
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{
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registerDeviceInfo_t deviceInfo; /*!< I2C device context. */
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ARM_DRIVER_I2C *pCommDrv; /*!< Pointer to the i2c driver. */
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bool isInitialized; /*!< Init status.*/
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uint16_t slaveAddress; /*!< slave address.*/
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} mma845x_i2c_sensorhandle_t;
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/*! @brief This structure defines the mma845x raw data buffer.*/
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typedef struct
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{
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uint32_t timestamp; /*!< Time stamp value in micro-seconds. */
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int16_t accel[3]; /*!< The accel data */
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} mma845x_acceldata_t;
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/*! @def MMA845x_ACCEL_DATA_SIZE
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* @brief The size of the MMA845x accel data.
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*/
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#define MMA845x_ACCEL_DATA_SIZE (0x06)
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/*******************************************************************************
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* APIs
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******************************************************************************/
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/*! @brief The interface function to initialize the sensor.
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* @details This function initialize the sensor and sensor handle.
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* @param[in] pSensorHandle handle to the sensor.
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* @param[in] pBus pointer to the CMSIS API compatible I2C bus object.
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* @param[in] index the I2C device number.
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* @param[in] sAddress slave address of the device on the bus.
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* @param[in] whoami WHO_AM_I value of the device.
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* @constraints This should be the first API to be called.
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* Application has to ensure that previous instances of these APIs have exited before invocation.
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* @reeentrant No
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* @return ::MMA845x_I2C_Initialize() returns the status.
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*/
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int32_t MMA845x_I2C_Initialize(
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mma845x_i2c_sensorhandle_t *pSensorHandle, ARM_DRIVER_I2C *pBus, uint8_t index, uint16_t sAddress, uint8_t whoAmi);
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/*! @brief : The interface function to set the I2C Idle Task.
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* @param[in] : mma845x_i2c_sensorhandle_t *pSensorHandle, handle to the sensor handle.
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* @param[in] : registeridlefunction_t idleTask, function pointer to the function to execute on I2C Idle Time.
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* @param[in] : void *userParam, the pointer to the user idle ftask parameters.
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* @return void.
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* @constraints This can be called any number of times only after MMA845x_I2C_Initialize().
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* Application has to ensure that previous instances of these APIs have exited before invocation.
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* @reeentrant No
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*/
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void MMA845x_I2C_SetIdleTask(mma845x_i2c_sensorhandle_t *pSensorHandle,
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registeridlefunction_t idleTask,
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void *userParam);
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/*! @brief The interface function to configure he sensor.
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* @details This function configure the sensor with requested ODR, Range and registers in the regsiter pair array.
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* @param[in] pSensorHandle handle to the sensor.
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* @param[in] pRegWriteList pointer to the register list.
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* @constraints This can be called any number of times only after MMA845x_I2C_Initialize().
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* Application has to ensure that previous instances of these APIs have exited before invocation.
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* @reeentrant No
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* @return ::MMA845x_I2C_Configure() returns the status.
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*/
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int32_t MMA845x_I2C_Configure(mma845x_i2c_sensorhandle_t *pSensorHandle, const registerwritelist_t *pRegWriteList);
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/*! @brief The interface function to read the sensor data.
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* @details This function read the sensor data out from the device and returns raw data in a byte stream.
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* @param[in] pSensorHandle handle to the sensor.
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* @param[in] pReadList pointer to the list of device registers and values to read.
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* @param[out] pBuffer buffer which holds raw sensor data.This buffer may be back to back databuffer based
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* command read in the list.
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* @constraints This can be called any number of times only after MMA845x_I2C_Initialize().
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* Application has to ensure that previous instances of these APIs have exited before invocation.
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* @reeentrant No
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* @return ::MMA845x_I2C_ReadData() returns the status.
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*/
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int32_t MMA845x_I2C_ReadData(mma845x_i2c_sensorhandle_t *pSensorHandle,
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const registerreadlist_t *pReadList,
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uint8_t *pBuffer);
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/*! @brief The interface function to De Initialize sensor..
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* @details This function made sensor in a power safe state and de initialize its handle.
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* @param[in] pSensorHandle handle to the sensor.
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* @constraints This can be called only after MMA845x_I2C_Initialize() has been called.
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* Application has to ensure that previous instances of these APIs have exited before invocation.
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* @reeentrant No
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* @return ::MMA845x_I2C_Deinit() returns the status.
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*/
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int32_t MMA845x_I2C_Deinit(mma845x_i2c_sensorhandle_t *pSensorHandle);
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#endif // MMA845x_DRV_H_
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