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/**
******************************************************************************
* @file lis302dl.c
* @author MCD Application Team
* @version V2.0.0
* @date 03-August-2015
* @brief This file provides a set of functions needed to manage the LIS302DL
* MEMS accelerometer.
******************************************************************************
* @attention
*
* Copyright (c) 2015 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "lis302dl.h"
/** @addtogroup BSP
* @{
*/
/** @addtogroup Components
* @{
*/
/** @addtogroup LIS302DL
* @brief This file includes the motion sensor driver for LIS302DL motion sensor
* devices.
* @{
*/
/** @defgroup LIS302DL_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup LIS302DL_Private_Defines
* @{
*/
/**
* @}
*/
/** @defgroup LIS302DL_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup LIS302DL_Private_Variables
* @{
*/
ACCELERO_DrvTypeDef Lis302dlDrv =
{
LIS302DL_Init,
LIS302DL_DeInit,
LIS302DL_ReadID,
LIS302DL_RebootCmd,
LIS302DL_Click_IntConfig,
0,
0,
0,
0,
LIS302DL_Click_IntClear,
LIS302DL_FilterConfig,
0,
LIS302DL_ReadACC,
};
/**
* @}
*/
/** @defgroup LIS302DL_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @defgroup LIS302DL_Private_Functions
* @{
*/
/**
* @brief Set LIS302DL Initialization.
* @param InitStruct: contains mask of different init parameters
* @retval None
*/
void LIS302DL_Init(uint16_t InitStruct)
{
uint8_t ctrl = 0x00;
/* Configure the low level interface */
ACCELERO_IO_Init();
ctrl = (uint8_t) InitStruct;
/* Write value to MEMS CTRL_REG1 register */
ACCELERO_IO_Write(&ctrl, LIS302DL_CTRL_REG1_ADDR, 1);
}
/**
* @brief LIS302DL De-Initialization.
* @param None
* @retval None.
*/
void LIS302DL_DeInit(void)
{
}
/**
* @brief Read LIS302DL device ID.
* @param None
* @retval The Device ID (two bytes).
*/
uint8_t LIS302DL_ReadID(void)
{
uint8_t tmp = 0;
/* Configure the low level interface */
ACCELERO_IO_Init();
/* Read WHO_AM_I register */
ACCELERO_IO_Read(&tmp, LIS302DL_WHO_AM_I_ADDR, 1);
/* Return the ID */
return (uint16_t)tmp;
}
/**
* @brief Set LIS302DL Internal High Pass Filter configuration.
* @param FilterStruct: contains data for filter config
* @retval None
*/
void LIS302DL_FilterConfig(uint8_t FilterStruct)
{
uint8_t ctrl = 0x00;
/* Read CTRL_REG2 register */
ACCELERO_IO_Read(&ctrl, LIS302DL_CTRL_REG2_ADDR, 1);
/* Clear high pass filter cut-off level, interrupt and data selection bits */
ctrl &= (uint8_t)~(LIS302DL_FILTEREDDATASELECTION_OUTPUTREGISTER | \
LIS302DL_HIGHPASSFILTER_LEVEL_3 | \
LIS302DL_HIGHPASSFILTERINTERRUPT_1_2);
ctrl |= FilterStruct;
/* Write value to MEMS CTRL_REG2 register */
ACCELERO_IO_Write(&ctrl, LIS302DL_CTRL_REG2_ADDR, 1);
}
/**
* @brief Set LIS302DL Interrupt configuration.
* @param LIS302DL_InterruptConfig_TypeDef: pointer to a LIS302DL_InterruptConfig_TypeDef
* structure that contains the configuration setting for the LIS302DL Interrupt.
* @retval None
*/
void LIS302DL_InterruptConfig(LIS302DL_InterruptConfigTypeDef *LIS302DL_IntConfigStruct)
{
uint8_t ctrl = 0x00;
/* Read CLICK_CFG register */
ACCELERO_IO_Read(&ctrl, LIS302DL_CLICK_CFG_REG_ADDR, 1);
/* Configure latch Interrupt request, click interrupts and double click interrupts */
ctrl = (uint8_t)(LIS302DL_IntConfigStruct->Latch_Request| \
LIS302DL_IntConfigStruct->SingleClick_Axes | \
LIS302DL_IntConfigStruct->DoubleClick_Axes);
/* Write value to MEMS CLICK_CFG register */
ACCELERO_IO_Write(&ctrl, LIS302DL_CLICK_CFG_REG_ADDR, 1);
}
/**
* @brief Set LIS302DL Interrupt configuration
* @param None
* @retval None
*/
void LIS302DL_Click_IntConfig(void)
{
uint8_t ctrl = 0x00;
LIS302DL_InterruptConfigTypeDef LIS302DL_InterruptStruct;
ACCELERO_IO_ITConfig();
/* Set configuration of Internal High Pass Filter of LIS302DL */
LIS302DL_InterruptStruct.Latch_Request = LIS302DL_INTERRUPTREQUEST_LATCHED;
LIS302DL_InterruptStruct.SingleClick_Axes = LIS302DL_CLICKINTERRUPT_Z_ENABLE;
LIS302DL_InterruptStruct.DoubleClick_Axes = LIS302DL_DOUBLECLICKINTERRUPT_Z_ENABLE;
LIS302DL_InterruptConfig(&LIS302DL_InterruptStruct);
/* Configure Interrupt control register: enable Click interrupt on INT1 and
INT2 on Z axis high event */
ctrl = 0x3F;
ACCELERO_IO_Write(&ctrl, LIS302DL_CTRL_REG3_ADDR, 1);
/* Enable Interrupt generation on click on Z axis */
ctrl = 0x50;
ACCELERO_IO_Write(&ctrl, LIS302DL_CLICK_CFG_REG_ADDR, 1);
/* Configure Click Threshold on X/Y axis (10 x 0.5g) */
ctrl = 0xAA;
ACCELERO_IO_Write(&ctrl, LIS302DL_CLICK_THSY_X_REG_ADDR, 1);
/* Configure Click Threshold on Z axis (10 x 0.5g) */
ctrl = 0x0A;
ACCELERO_IO_Write(&ctrl, LIS302DL_CLICK_THSZ_REG_ADDR, 1);
/* Enable interrupt on Y axis high event */
ctrl = 0x4C;
ACCELERO_IO_Write(&ctrl, LIS302DL_FF_WU_CFG1_REG_ADDR, 1);
/* Configure Time Limit */
ctrl = 0x03;
ACCELERO_IO_Write(&ctrl, LIS302DL_CLICK_TIMELIMIT_REG_ADDR, 1);
/* Configure Latency */
ctrl = 0x7F;
ACCELERO_IO_Write(&ctrl, LIS302DL_CLICK_LATENCY_REG_ADDR, 1);
/* Configure Click Window */
ctrl = 0x7F;
ACCELERO_IO_Write(&ctrl, LIS302DL_CLICK_WINDOW_REG_ADDR, 1);
}
/**
* @brief Clear LIS302DL click Interrupt
* @param None
* @retval None
*/
void LIS302DL_Click_IntClear(void)
{
uint8_t buffer[6], clickreg = 0;
/* Read click and status registers if the available MEMS Accelerometer is LIS302DL */
ACCELERO_IO_Read(&clickreg, LIS302DL_CLICK_SRC_REG_ADDR, 1);
ACCELERO_IO_Read(buffer, LIS302DL_STATUS_REG_ADDR, 6);
}
/**
* @brief Change the lowpower mode for LIS302DL
* @param LowPowerMode: New state for the low power mode.
* This parameter can be one of the following values:
* @arg LIS302DL_LOWPOWERMODE_POWERDOWN: Power down mode
* @arg LIS302DL_LOWPOWERMODE_ACTIVE: Active mode
* @retval None
*/
void LIS302DL_LowpowerCmd(uint8_t LowPowerMode)
{
uint8_t tmpreg;
/* Read CTRL_REG1 register */
ACCELERO_IO_Read(&tmpreg, LIS302DL_CTRL_REG1_ADDR, 1);
/* Set new low power mode configuration */
tmpreg &= (uint8_t)~LIS302DL_LOWPOWERMODE_ACTIVE;
tmpreg |= LowPowerMode;
/* Write value to MEMS CTRL_REG1 register */
ACCELERO_IO_Write(&tmpreg, LIS302DL_CTRL_REG1_ADDR, 1);
}
/**
* @brief Data Rate command
* @param DataRateValue: Data rate value
* This parameter can be one of the following values:
* @arg LIS302DL_DATARATE_100: 100 Hz output data rate
* @arg LIS302DL_DATARATE_400: 400 Hz output data rate
* @retval None
*/
void LIS302DL_DataRateCmd(uint8_t DataRateValue)
{
uint8_t tmpreg;
/* Read CTRL_REG1 register */
ACCELERO_IO_Read(&tmpreg, LIS302DL_CTRL_REG1_ADDR, 1);
/* Set new Data rate configuration */
tmpreg &= (uint8_t)~LIS302DL_DATARATE_400;
tmpreg |= DataRateValue;
/* Write value to MEMS CTRL_REG1 register */
ACCELERO_IO_Write(&tmpreg, LIS302DL_CTRL_REG1_ADDR, 1);
}
/**
* @brief Change the Full Scale of LIS302DL
* @param FS_value: new full scale value.
* This parameter can be one of the following values:
* @arg LIS302DL_FULLSCALE_2_3: +-2.3g
* @arg LIS302DL_FULLSCALE_9_2: +-9.2g
* @retval None
*/
void LIS302DL_FullScaleCmd(uint8_t FS_value)
{
uint8_t tmpreg;
/* Read CTRL_REG1 register */
ACCELERO_IO_Read(&tmpreg, LIS302DL_CTRL_REG1_ADDR, 1);
/* Set new full scale configuration */
tmpreg &= (uint8_t)~LIS302DL_FULLSCALE_9_2;
tmpreg |= FS_value;
/* Write value to MEMS CTRL_REG1 register */
ACCELERO_IO_Write(&tmpreg, LIS302DL_CTRL_REG1_ADDR, 1);
}
/**
* @brief Reboot memory content of LIS302DL.
* @param None
* @retval None
*/
void LIS302DL_RebootCmd(void)
{
uint8_t tmpreg;
/* Read CTRL_REG2 register */
ACCELERO_IO_Read(&tmpreg, LIS302DL_CTRL_REG2_ADDR, 1);
/* Enable or Disable the reboot memory */
tmpreg |= LIS302DL_BOOT_REBOOTMEMORY;
/* Write value to MEMS CTRL_REG2 register */
ACCELERO_IO_Write(&tmpreg, LIS302DL_CTRL_REG2_ADDR, 1);
}
/**
* @brief Read LIS302DL output register, and calculate the acceleration
* ACC[mg]=SENSITIVITY* (out_h*256+out_l)/16 (12 bit rappresentation)
* @param pfData: Data out pointer
* @retval None
*/
void LIS302DL_ReadACC(int16_t *pData)
{
int8_t buffer[6];
int16_t pnRawData[3];
uint8_t sensitivity = LIS302DL_SENSITIVITY_2_3G;
uint8_t crtl, i = 0x00;
ACCELERO_IO_Read(&crtl, LIS302DL_CTRL_REG1_ADDR, 1);
ACCELERO_IO_Read((uint8_t*)buffer, LIS302DL_OUT_X_ADDR, 6);
for(i=0; i<3; i++)
{
pnRawData[i] = buffer[2*i];
}
switch(crtl & LIS302DL_FULLSCALE_9_2)
{
/* FS bit = 0 ==> Sensitivity typical value = 18milligals/digit*/
case LIS302DL_FULLSCALE_2_3:
sensitivity = LIS302DL_SENSITIVITY_2_3G;
break;
/* FS bit = 1 ==> Sensitivity typical value = 72milligals/digit*/
case LIS302DL_FULLSCALE_9_2:
sensitivity = LIS302DL_SENSITIVITY_9_2G;
break;
default:
break;
}
/* Obtain the mg value for the three axis */
for(i=0; i<3; i++)
{
pData[i]=(pnRawData[i] * sensitivity);
}
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
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