/* Read/Write command */
#define READWRITE_CMD ((uint8_t)0x80) // R = 1 W = 0
/* Multiple byte read/write command */
#define MULTIPLEBYTE_CMD ((uint8_t)0x40) // Multi = 1 Single = 0
/* Dummy Byte Send by the SPI Master device in order to generate the Clock to the Slave device */
#define DUMMY_BYTE ((uint8_t)0x00)
static void LIS302DL_LowLevel_Init(void);
/**
* @brief Set LIS302DL Initialization. LIS302DL 3õê¼»ˉ
* @param LIS302DL_Config_Struct: pointer to a LIS302DL_Config_TypeDef structure êäèë2Îêy￡o3õê¼»ˉ½á11ìåÖ¸Õë
* that contains the configuration setting for the LIS302DL.
* @retval None
*/
void LIS302DL_Init(LIS302DL_InitTypeDef *LIS302DL_InitStruct)
{
uint8_t ctrl = 0x00;
/* Configure the low level interface ¼Ä′æÆ÷¼¶±eμÄ3õê¼»ˉ */
LIS302DL_LowLevel_Init();
/* Write value to MEMS CLICK_CFG register */
LIS302DL_WriteByte(ctrl, LIS302DL_CLICK_CFG_REG_ADDR);
}
/**
* @brief Change the lowpower mode for LIS302DL μí1|oÄÄ￡ê½Ö¸áî
* @param LowPowerMode: new state for the lowpower 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;
/* Set new low power mode configuration */
tmpreg &= (uint8_t)~LIS302DL_LOWPOWERMODE_ACTIVE;
tmpreg |= LowPowerMode;
/* Write value to MEMS CTRL_REG1 regsister */
LIS302DL_WriteByte(tmpreg, LIS302DL_CTRL_REG1_ADDR);
}
/**
* @brief Data Rate command êy¾YËùÂêéèÖÃ
* @param DataRateValue: Data rate value
* This parameter can be one of the following values:
* @arg LIS302DL_DATARATE_100: 100 Hz output data rate á½ÖÖËùÂê￡o
* @arg LIS302DL_DATARATE_400: 400 Hz output data rate
* @retval None
*/
void LIS302DL_DataRateCmd(uint8_t DataRateValue)
{
uint8_t tmpreg;
/* Set new Data rate configuration */
tmpreg &= (uint8_t)~LIS302DL_DATARATE_400;
tmpreg |= DataRateValue;
/* Write value to MEMS CTRL_REG1 regsister */
LIS302DL_WriteByte(tmpreg, LIS302DL_CTRL_REG1_ADDR);
}
/**
* @brief Change the Full Scale of LIS302DL ¼óËù¶èá¿3ìéèÖÃ
* @param FS_value: new full scale value.
* This parameter can be one of the following values:
* @arg LIS302DL_FULLSCALE_2_3: +-2.3g ὸöá¿3ì￡o
* @arg LIS302DL_FULLSCALE_9_2: +-9.2g
* @retval None
*/
void LIS302DL_FullScaleCmd(uint8_t FS_value)
{
uint8_t tmpreg;
/* Enable or Disable the reboot memory */
tmpreg |= LIS302DL_BOOT_REBOOTMEMORY;
/* Write value to MEMS CTRL_REG2 regsister */
LIS302DL_WriteByte(tmpreg, LIS302DL_CTRL_REG2_ADDR);
}
/**
* @brief Writes one byte to the LIS302DL.
* @param pBuffer : pointer to the buffer containing the data to be written to the LIS302DL.
* @param WriteAddr : LIS302DL's internal address to write to.
* @param NumByteToWrite: Number of bytes to write.
* @retval None
*/
uint8_t LIS302DL_transmitByte(uint8_t cmd, uint8_t WriteAddr)
{
uint16_t tmp = 0;
uint16_t i;
tmp = ((uint16_t)WriteAddr) << 8 | cmd;
/* Set chip select Low at the start of the transmission */
LIS302DL_CS_LOW();
/* LIS302DL High Pass Filter struct */
typedef struct
{
uint8_t HighPassFilter_Data_Selection; /* Internal filter bypassed or data from internal filter send to output register*/
uint8_t HighPassFilter_CutOff_Frequency; /* High pass filter cut-off frequency */
uint8_t HighPassFilter_Interrupt; /* High pass filter enabled for Freefall/WakeUp #1 or #2 */
}LIS302DL_FilterConfigTypeDef;
/* Uncomment the following line to use the default LIS302DL_TIMEOUT_UserCallback()
function implemented in stm32f4_discovery_lis302dl.c file.
LIS302DL_TIMEOUT_UserCallback() function is called whenever a timeout condition
occure during communication (waiting transmit data register empty flag(TXE)
or waiting receive data register is not empty flag (RXNE)). */
/* #define USE_DEFAULT_TIMEOUT_CALLBACK */
/* Maximum Timeout values for flags waiting loops. These timeouts are not based
on accurate values, they just guarantee that the application will not remain
stuck if the SPI communication is corrupted.
You may modify these timeout values depending on CPU frequency and application
conditions (interrupts routines ...). */
#define LIS302DL_FLAG_TIMEOUT ((uint32_t)0x1000)
/*******************************************************************************
* CTRL_REG3 Register: Interrupt Control Register
* Read Write register
* Default value: 0x00
* 7 IHL active: Interrupt active high/low.
* 0 - active high
* 1 - active low
* 6 PP_OD: push-pull/open-drain.
* 0 - push-pull
* 1 - open-drain
* 5:3 I2_CFG2 - I2_CFG0 Data signal on INT2 pad control bits
* 2:0 I1_CFG2 - I1_CFG0 Data signal on INT1 pad control bits
* I1(2)_CFG2 | I1(2)_CFG1 | I1(2)_CFG0 | INT1(2) Pad
* ----------------------------------------------------------
* 0 | 0 | 0 | GND
* 0 | 0 | 1 | FreeFall/WakeUp#1
* 0 | 1 | 0 | FreeFall/WakeUp#2
* 0 | 1 | 1 | FreeFall/WakeUp#1 or FreeFall/WakeUp#2
* 1 | 0 | 0 | Data ready
* 1 | 1 | 1 | Click interrupt
*******************************************************************************/
#define LIS302DL_CTRL_REG3_ADDR 0x22
/*******************************************************************************
* HP_FILTER_RESET Register: Dummy register. Reading at this address zeroes
* instantaneously the content of the internal high pass filter. If the high pass
* filter is enabled all three axes are instantaneously set to 0g.
* This allows to overcome the settling time of the high pass filter.
* Read only register
* Default value: Dummy
*******************************************************************************/
#define LIS302DL_HP_FILTER_RESET_REG_ADDR 0x23
/*******************************************************************************
* STATUS_REG Register: Status Register
* Default value: 0x00
* 7 ZYXOR: X, Y and Z axis data overrun.
* 0: no overrun has occurred
* 1: new data has overwritten the previous one before it was read
* 6 ZOR: Z axis data overrun.
* 0: no overrun has occurred
* 1: new data for Z-axis has overwritten the previous one before it was read
* 5 yOR: y axis data overrun.
* 0: no overrun has occurred
* 1: new data for y-axis has overwritten the previous one before it was read
* 4 XOR: X axis data overrun.
* 0: no overrun has occurred
* 1: new data for X-axis has overwritten the previous one before it was read
* 3 ZYXDA: X, Y and Z axis new data available
* 0: a new set of data is not yet available
* 1: a new set of data is available
* 2 ZDA: Z axis new data available.
* 0: a new set of data is not yet available
* 1: a new data for Z axis is available
* 1 YDA: Y axis new data available
* 0: a new set of data is not yet available
* 1: a new data for Y axis is available
* 0 XDA: X axis new data available
* 0: a new set of data is not yet available
* 1: a new data for X axis is available
*******************************************************************************/
#define LIS302DL_STATUS_REG_ADDR 0x27
/*******************************************************************************
* OUT_X Register: X-axis output Data
* Read only register
* Default value: output
* 7:0 XD7-XD0: X-axis output Data
*******************************************************************************/
#define LIS302DL_OUT_X_ADDR 0x29
/*******************************************************************************
* OUT_Y Register: Y-axis output Data
* Read only register
* Default value: output
* 7:0 YD7-YD0: Y-axis output Data
*******************************************************************************/
#define LIS302DL_OUT_Y_ADDR 0x2B
/*******************************************************************************
* OUT_Z Register: Z-axis output Data
* Read only register
* Default value: output
* 7:0 ZD7-ZD0: Z-axis output Data
*******************************************************************************/
#define LIS302DL_OUT_Z_ADDR 0x2D
/*******************************************************************************
* FF_WW_CFG_1 Register: Configuration register for Interrupt 1 source.
* Read write register
* Default value: 0x00
* 7 AOI: AND/OR combination of Interrupt events.
* 0: OR combination of interrupt events
* 1: AND combination of interrupt events
* 6 LIR: Latch/not latch interrupt request
* 0: interrupt request not latched
* 1: interrupt request latched
* 5 ZHIE: Enable interrupt generation on Z high event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value higher than preset threshold
* 4 ZLIE: Enable interrupt generation on Z low event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value lower than preset threshold
* 3 YHIE: Enable interrupt generation on Y high event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value higher than preset threshold
* 2 YLIE: Enable interrupt generation on Y low event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value lower than preset threshold
* 1 XHIE: Enable interrupt generation on X high event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value higher than preset threshold
* 0 XLIE: Enable interrupt generation on X low event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value lower than preset threshold
*******************************************************************************/
#define LIS302DL_FF_WU_CFG1_REG_ADDR 0x30
/*******************************************************************************
* FF_WU_SRC_1 Register: Interrupt 1 source register.
* Reading at this address clears FF_WU_SRC_1 register and the FF, WU 1 interrupt
* and allow the refreshment of data in the FF_WU_SRC_1 register if the latched option
* was chosen.
* Read only register
* Default value: 0x00
* 7 Reserved
* 6 IA: Interrupt active.
* 0: no interrupt has been generated
* 1: one or more interrupts have been generated
* 5 ZH: Z high.
* 0: no interrupt
* 1: ZH event has occurred
* 4 ZL: Z low.
* 0: no interrupt
* 1: ZL event has occurred
* 3 YH: Y high.
* 0: no interrupt
* 1: YH event has occurred
* 2 YL: Y low.
* 0: no interrupt
* 1: YL event has occurred
* 1 YH: X high.
* 0: no interrupt
* 1: XH event has occurred
* 0 YL: X low.
* 0: no interrupt
* 1: XL event has occurred
*******************************************************************************/
#define LIS302DL_FF_WU_SRC1_REG_ADDR 0x31
/*******************************************************************************
* FF_WU_DURATION_1 Register: duration Register
* Read Write register
* Default value: 0x00
* 7:0 D7-D0 Duration value. (Duration steps and maximum values depend on the ODR chosen)
******************************************************************************/
#define LIS302DL_FF_WU_DURATION1_REG_ADDR 0x33
/*******************************************************************************
* FF_WW_CFG_2 Register: Configuration register for Interrupt 2 source.
* Read write register
* Default value: 0x00
* 7 AOI: AND/OR combination of Interrupt events.
* 0: OR combination of interrupt events
* 1: AND combination of interrupt events
* 6 LIR: Latch/not latch interrupt request
* 0: interrupt request not latched
* 1: interrupt request latched
* 5 ZHIE: Enable interrupt generation on Z high event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value higher than preset threshold
* 4 ZLIE: Enable interrupt generation on Z low event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value lower than preset threshold
* 3 YHIE: Enable interrupt generation on Y high event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value higher than preset threshold
* 2 YLIE: Enable interrupt generation on Y low event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value lower than preset threshold
* 1 XHIE: Enable interrupt generation on X high event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value higher than preset threshold
* 0 XLIE: Enable interrupt generation on X low event.
* 0: disable interrupt request
* 1: enable interrupt request on measured accel. value lower than preset threshold
*******************************************************************************/
#define LIS302DL_FF_WU_CFG2_REG_ADDR 0x34
/*******************************************************************************
* FF_WU_SRC_2 Register: Interrupt 2 source register.
* Reading at this address clears FF_WU_SRC_2 register and the FF, WU 2 interrupt
* and allow the refreshment of data in the FF_WU_SRC_2 register if the latched option
* was chosen.
* Read only register
* Default value: 0x00
* 7 Reserved
* 6 IA: Interrupt active.
* 0: no interrupt has been generated
* 1: one or more interrupts have been generated
* 5 ZH: Z high.
* 0: no interrupt
* 1: ZH event has occurred
* 4 ZL: Z low.
* 0: no interrupt
* 1: ZL event has occurred
* 3 YH: Y high.
* 0: no interrupt
* 1: YH event has occurred
* 2 YL: Y low.
* 0: no interrupt
* 1: YL event has occurred
* 1 YH: X high.
* 0: no interrupt
* 1: XH event has occurred
* 0 YL: X low.
* 0: no interrupt
* 1: XL event has occurred
*******************************************************************************/
#define LIS302DL_FF_WU_SRC2_REG_ADDR 0x35
/*******************************************************************************
* FF_WU_DURATION_2 Register: duration Register
* Read Write register
* Default value: 0x00
* 7:0 D7-D0 Duration value. (Duration steps and maximum values depend on the ODR chosen)
******************************************************************************/
#define LIS302DL_FF_WU_DURATION2_REG_ADDR 0x37
/******************************************************************************
* CLICK_CFG Register: click Register
* Read Write register
* Default value: 0x00
* 7 Reserved
* 6 LIR: Latch Interrupt request.
* 0: interrupt request not latched
* 1: interrupt request latched
* 5 Double_Z: Enable interrupt generation on double click event on Z axis.
* 0: disable interrupt request
* 1: enable interrupt request
* 4 Single_Z: Enable interrupt generation on single click event on Z axis.
* 0: disable interrupt request
* 1: enable interrupt request
* 3 Double_Y: Enable interrupt generation on double click event on Y axis.
* 0: disable interrupt request
* 1: enable interrupt request
* 2 Single_Y: Enable interrupt generation on single click event on Y axis.
* 0: disable interrupt request
* 1: enable interrupt request
* 1 Double_X: Enable interrupt generation on double click event on X axis.
* 0: disable interrupt request
* 1: enable interrupt request
* 0 Single_y: Enable interrupt generation on single click event on X axis.
* 0: disable interrupt request
* 1: enable interrupt request
******************************************************************************/
#define LIS302DL_CLICK_CFG_REG_ADDR 0x38
/******************************************************************************
* CLICK_SRC Register: click status Register
* Read only register
* Default value: 0x00
* 7 Reserved
* 6 IA: Interrupt active.
* 0: no interrupt has been generated
* 1: one or more interrupts have been generated
* 5 Double_Z: Double click on Z axis event.
* 0: no interrupt
* 1: Double Z event has occurred
* 4 Single_Z: Z low.
* 0: no interrupt
* 1: Single Z event has occurred
* 3 Double_Y: Y high.
* 0: no interrupt
* 1: Double Y event has occurred
* 2 Single_Y: Y low.
* 0: no interrupt
* 1: Single Y event has occurred
* 1 Double_X: X high.
* 0: no interrupt
* 1: Double X event has occurred
* 0 Single_X: X low.
* 0: no interrupt
* 1: Single X event has occurred
*******************************************************************************/
#define LIS302DL_CLICK_SRC_REG_ADDR 0x39
/*******************************************************************************
* CLICK_THSY_X Register: Click threshold Y and X register
* Read Write register
* Default value: 0x00
* 7:4 THSy3-THSy0: Click threshold on Y axis, step 0.5g
* 3:0 THSx3-THSx0: Click threshold on X axis, step 0.5g
*******************************************************************************/
#define LIS302DL_CLICK_THSY_X_REG_ADDR 0x3B
///* USER Callbacks: This is function for which prototype only is declared in
// MEMS accelerometre driver and that should be implemented into user applicaiton. */
///* LIS302DL_TIMEOUT_UserCallback() function is called whenever a timeout condition
// occure during communication (waiting transmit data register empty flag(TXE)
// or waiting receive data register is not empty flag (RXNE)).
// You can use the default timeout callback implementation by uncommenting the
// define USE_DEFAULT_TIMEOUT_CALLBACK in stm32f4_discovery_lis302dl.h file.
// Typically the user implementation of this callback should reset MEMS peripheral
// and re-initialize communication or in worst case reset all the application. */
//uint32_t LIS302DL_TIMEOUT_UserCallback(void);