225 lines
7.9 KiB
C
225 lines
7.9 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 fxls8471q_drv.c
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* @brief The fxls8471q_drv.c file implements the FXLS8471Q sensor driver interfaces.
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*/
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//-----------------------------------------------------------------------
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// ISSDK Includes
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//-----------------------------------------------------------------------
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#include "gpio_driver.h"
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#include "fxls8471q_drv.h"
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//-----------------------------------------------------------------------
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// Global Variables
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//-----------------------------------------------------------------------
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uint8_t fxls8471q_spiRead_CmdBuffer[FXLS8471Q_SPI_MAX_MSG_SIZE] = {0};
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uint8_t fxls8471q_spiRead_DataBuffer[FXLS8471Q_SPI_MAX_MSG_SIZE] = {0};
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uint8_t fxls8471q_spiWrite_CmdDataBuffer[FXLS8471Q_SPI_MAX_MSG_SIZE] = {0};
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//-----------------------------------------------------------------------
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// Functions
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//-----------------------------------------------------------------------
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void FXLS8471Q_SPI_ReadPreprocess(void *pCmdOut, uint32_t offset, uint32_t size)
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{
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spiCmdParams_t *pSlaveCmd = pCmdOut;
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uint8_t *pWBuff = fxls8471q_spiRead_CmdBuffer;
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uint8_t *pRBuff = fxls8471q_spiRead_DataBuffer;
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/* Formatting for Read command of FXLS8471Q SENSOR. */
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*(pWBuff) = offset & 0x7F; /* offset is the internal register address of the sensor at which write is performed. */
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*(pWBuff + 1) = offset & 0x80;
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// Create the slave read command.
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pSlaveCmd->size = size + FXLS8471Q_SPI_CMD_LEN;
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pSlaveCmd->pWriteBuffer = pWBuff;
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pSlaveCmd->pReadBuffer = pRBuff;
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}
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void FXLS8471Q_SPI_WritePreprocess(void *pCmdOut, uint32_t offset, uint32_t size, void *pWritebuffer)
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{
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spiCmdParams_t *pSlaveCmd = pCmdOut;
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uint8_t *pWBuff = fxls8471q_spiWrite_CmdDataBuffer;
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uint8_t *pRBuff = fxls8471q_spiWrite_CmdDataBuffer + size + FXLS8471Q_SPI_CMD_LEN;
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/* Formatting for Write command of FXLS8471Q SENSOR. */
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*(pWBuff) = offset | 0x80; /* offset is the internal register address of the sensor at which write is performed. */
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*(pWBuff + 1) = offset & 0x80;
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/* Copy the slave write command */
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memcpy(pWBuff + FXLS8471Q_SPI_CMD_LEN, pWritebuffer, size);
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/* Create the slave command. */
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pSlaveCmd->size = size + FXLS8471Q_SPI_CMD_LEN;
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pSlaveCmd->pWriteBuffer = pWBuff;
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pSlaveCmd->pReadBuffer = pRBuff;
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}
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int32_t FXLS8471Q_SPI_Initialize(fxls8471q_spi_sensorhandle_t *pSensorHandle,
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ARM_DRIVER_SPI *pBus,
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uint8_t index,
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void *pSlaveSelect,
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uint8_t whoAmi)
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{
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int32_t status;
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uint8_t reg;
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GENERIC_DRIVER_GPIO *pGPIODriver = &Driver_GPIO_KSDK;
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/*! Check the input parameters. */
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if ((pSensorHandle == NULL) || (pBus == NULL) || (pSlaveSelect == NULL))
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{
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return SENSOR_ERROR_INVALID_PARAM;
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}
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/*! Initialize the sensor handle. */
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pSensorHandle->pCommDrv = pBus;
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pSensorHandle->slaveParams.pReadPreprocessFN = FXLS8471Q_SPI_ReadPreprocess;
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pSensorHandle->slaveParams.pWritePreprocessFN = FXLS8471Q_SPI_WritePreprocess;
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pSensorHandle->slaveParams.pTargetSlavePinID = pSlaveSelect;
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pSensorHandle->slaveParams.spiCmdLen = FXLS8471Q_SPI_CMD_LEN;
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pSensorHandle->slaveParams.ssActiveValue = FXLS8471Q_SS_ACTIVE_VALUE;
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pSensorHandle->deviceInfo.deviceInstance = index;
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pSensorHandle->deviceInfo.functionParam = NULL;
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pSensorHandle->deviceInfo.idleFunction = NULL;
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/* Initialize the Slave Select Pin. */
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pGPIODriver->pin_init(pSlaveSelect, GPIO_DIRECTION_OUT, NULL, NULL, NULL);
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if (pSensorHandle->slaveParams.ssActiveValue == SPI_SS_ACTIVE_LOW)
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{
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pGPIODriver->set_pin(pSlaveSelect);
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}
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else
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{
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pGPIODriver->clr_pin(pSlaveSelect);
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}
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/*! Read and store the device's WHO_AM_I.*/
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status = Register_SPI_Read(pSensorHandle->pCommDrv, &pSensorHandle->deviceInfo, &pSensorHandle->slaveParams,
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FXLS8471Q_WHO_AM_I, 1, ®);
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if ((ARM_DRIVER_OK != status) || (whoAmi != reg))
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{
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pSensorHandle->isInitialized = false;
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return SENSOR_ERROR_INIT;
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}
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pSensorHandle->isInitialized = true;
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return SENSOR_ERROR_NONE;
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}
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void FXLS8471Q_SPI_SetIdleTask(fxls8471q_spi_sensorhandle_t *pSensorHandle,
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registeridlefunction_t idleTask,
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void *userParam)
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{
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pSensorHandle->deviceInfo.functionParam = userParam;
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pSensorHandle->deviceInfo.idleFunction = idleTask;
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}
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int32_t FXLS8471Q_SPI_Configure(fxls8471q_spi_sensorhandle_t *pSensorHandle, const registerwritelist_t *pRegWriteList)
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{
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int32_t status;
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/*! Validate for the correct handle and register write list.*/
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if ((pSensorHandle == NULL) || (pRegWriteList == NULL))
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{
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return SENSOR_ERROR_INVALID_PARAM;
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}
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/*! Check whether sensor handle is initialized before applying configuration.*/
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if (pSensorHandle->isInitialized != true)
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{
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return SENSOR_ERROR_INIT;
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}
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/*! Put the device into standby mode so that configuration can be applied.*/
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status = Register_SPI_Write(pSensorHandle->pCommDrv, &pSensorHandle->deviceInfo, &pSensorHandle->slaveParams,
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FXLS8471Q_CTRL_REG1, FXLS8471Q_CTRL_REG1_MODE_STANDBY, FXLS8471Q_CTRL_REG1_MODE_MASK);
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if (ARM_DRIVER_OK != status)
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{
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return SENSOR_ERROR_WRITE;
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}
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/*! Apply the Sensor Configuration based on the Register Write List */
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status = Sensor_SPI_Write(pSensorHandle->pCommDrv, &pSensorHandle->deviceInfo, &pSensorHandle->slaveParams,
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pRegWriteList);
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if (ARM_DRIVER_OK != status)
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{
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return SENSOR_ERROR_WRITE;
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}
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/*! Put the device into active mode and ready for reading data.*/
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status = Register_SPI_Write(pSensorHandle->pCommDrv, &pSensorHandle->deviceInfo, &pSensorHandle->slaveParams,
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FXLS8471Q_CTRL_REG1, FXLS8471Q_CTRL_REG1_MODE_ACTIVE, FXLS8471Q_CTRL_REG1_MODE_MASK);
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if (ARM_DRIVER_OK != status)
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{
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return SENSOR_ERROR_WRITE;
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}
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return SENSOR_ERROR_NONE;
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}
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int32_t FXLS8471Q_SPI_ReadData(fxls8471q_spi_sensorhandle_t *pSensorHandle,
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const registerreadlist_t *pReadList,
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uint8_t *pBuffer)
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{
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int32_t status;
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/*! Validate for the correct handle and register read list.*/
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if ((pSensorHandle == NULL) || (pReadList == NULL) || (pBuffer == NULL))
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{
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return SENSOR_ERROR_INVALID_PARAM;
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}
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/*! Check whether sensor handle is initialized before reading sensor data.*/
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if (pSensorHandle->isInitialized != true)
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{
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return SENSOR_ERROR_INIT;
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}
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/*! Parse through the read list and read the data one by one. */
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status = Sensor_SPI_Read(pSensorHandle->pCommDrv, &pSensorHandle->deviceInfo, &pSensorHandle->slaveParams,
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pReadList, pBuffer);
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if (ARM_DRIVER_OK != status)
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{
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return SENSOR_ERROR_READ;
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}
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return SENSOR_ERROR_NONE;
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}
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int32_t FXLS8471Q_SPI_Deinit(fxls8471q_spi_sensorhandle_t *pSensorHandle)
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{
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if (pSensorHandle == NULL)
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{
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return SENSOR_ERROR_INVALID_PARAM;
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}
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/*! Check whether sensor handle is initialized before triggering sensor reset.*/
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if (pSensorHandle->isInitialized != true)
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{
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return SENSOR_ERROR_INIT;
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}
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/* Note:
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* There is a Errata described in the data sheet for soft reset with SPI,
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* which says device specific paratameters do not get updated correctly from NVM,
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* causing inaccurate data output once the soft-reset command issued in SPI mode.
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* The work around is hard reset, which cannot be handled in sensor driver software.
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* So software reset command wont be issued until this issue is fixed in the silicon.
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*/
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/*! De-initialize sensor handle. */
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pSensorHandle->isInitialized = false;
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return SENSOR_ERROR_NONE;
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}
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