Peter Swanson / H3LIS331

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H3LIS331 Class Reference
Public Member Functions

H3LIS331 Class Reference

H3LIS331 triple axis digital accelerometer. More...

#include <H3LIS331.h>

Public Member Functions

 H3LIS331 (PinName sda, PinName scl)
 Constructor.
char getWhoAmI (void)
 Get the identity of the device.
void setPowerMode (char power_mode)
 Set the power mode (power down, low power, normal mode)
char getPowerMode (void)
 Get the current power mode.
void setFullScaleRange400g (void)
 Set the interrupt configuration.
void setFullScaleRange200g (void)
 Set the Full Scale Range to +/- 200g's.
void setFullScaleRange100g (void)
 Set the Full Scale Range to +/- 100g's.
float getAccelX (void)
 Get the output for the x-axis accelerometer.
float getAccelY (void)
 Get the output for the y-axis accelerometer.
float getAccelZ (void)
 Get the output on the z-axis accelerometer.

Detailed Description

H3LIS331 triple axis digital accelerometer.

Definition at line 61 of file H3LIS331.h.

Constructor & Destructor Documentation

H3LIS331 ( PinName  sda,
PinName  scl 
)

Constructor.

Includes.

Sets FS_SEL to 0x03 for proper opertaion.

Parameters:
sda- mbed pin to use for the SDA I2C line.
scl- mbed pin to use for the SCL I2C line.

Definition at line 7 of file H3LIS331.cpp.

Member Function Documentation

float getAccelX ( void   )

Get the output for the x-axis accelerometer.

Returns:
The output on the x-axis in engineering units (g's).

Definition at line 154 of file H3LIS331.cpp.

float getAccelY ( void   )

Get the output for the y-axis accelerometer.

Returns:
The output on the y-axis in engineering units (g's).

Definition at line 170 of file H3LIS331.cpp.

float getAccelZ ( void   )

Get the output on the z-axis accelerometer.

Returns:
The output on the z-axis in engineering units (g's).

Definition at line 185 of file H3LIS331.cpp.

char getPowerMode ( void   )

Get the current power mode.

Returns:

Definition at line 72 of file H3LIS331.cpp.

char getWhoAmI ( void   )

Get the identity of the device.

Returns:
The contents of the Who Am I register which contains the I2C address of the device.

Definition at line 45 of file H3LIS331.cpp.

void setFullScaleRange100g ( void   )

Set the Full Scale Range to +/- 100g's.

Definition at line 127 of file H3LIS331.cpp.

void setFullScaleRange200g ( void   )

Set the Full Scale Range to +/- 200g's.

Definition at line 114 of file H3LIS331.cpp.

void setFullScaleRange400g ( void   )

Set the interrupt configuration.

See datasheet for configuration byte details.

7 6 5 4 +-------+-------+------+--------+ | IHL | PP_OD | LIR2 | I2_CFG | +-------+-------+------+--------+

3 2 1 0 +---------+------+---------+---------+ | I2_CFG0 | LIR1 | I1_CFG1 | I1-CFG0 | +---------+------+---------+---------+

IHL Interrupt active high or low. 0:active high; 1:active low (default:0) PP_OD Push-pull/Open drain selection on interrupt pad. 0:push-pull; 1:open drain (default:0) LIR2 Latch interupt request on INT2_SRC register, with INT2_SRC register cleared by reading INT2_SRC itself 0: irq not latched; 1:irq latched (default:0) I2_CFG1, I2_CFG0 See datasheet table LIR1 Latch interupt request on INT1_SRC register, with INT1_SRC register cleared by reading INT1_SRC itself 0: irq not latched; 1:irq latched (default:0) I1_CFG1, I1_CFG0 See datasheet table

Parameters:
configConfiguration byte to write to INT_CFG register. Check the status register
Returns:
Set the Full Scale Range to +/- 400g's.

Definition at line 102 of file H3LIS331.cpp.

void setPowerMode ( char  power_mode )

Set the power mode (power down, low power, normal mode)

Parameters:
Power Mode | Output Data Rate (Hz) | Low-pass Filter Cut off (Hz) | define -------------------------------------------------------------------------------- Power-down | -- | -- | POWER_DOWN Normal | 50 | 37 | NORMAL_50HZ Normal | 100 | 74 | NORMAL_100HZ Normal | 400 | 292 | NORMAL_400HZ Normal | 1000 | 780 | NORMAL_1000HZ Low-power | 0.5 | -- | LOW_POWER_0_5HZ Low-power | 1 | -- | LOW_POWER_1HZ Low-power | 2 | -- | LOW_POWER_2HZ Low-power | 5 | -- | LOW_POWER_5HZ Low-power | 10 | -- | LOW_POWER_10HZ

Definition at line 62 of file H3LIS331.cpp.

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