pyupm_mma7361 module

class pyupm_mma7361.MMA7361(x_pin, y_pin, z_pin, selftest_pin, sleep_pin, freefall_pin, range_pin, a_ref=5.0)

Bases: object

API for the DFRobot MMA7361 Analog Accelerometer.

ID: mma7361

Name: Triaxial Analog Accelerometer

Category: accelerometer

Manufacturer: dfrobot

Connection: analog gpio

Link:http://www.dfrobot.com/index.php?route=product/product&path=36&product_id=507#.V7YEj99ytNJ This library was tested with the DFRobot MMA7361 Analog Accelerometer. It supports 3 Axes with a selectable 1.5G and 6G sensitivity.

C++ includes: mma7361.hpp

enableSelftest(enable)

void enableSelftest(bool enable)

Enable self test mode.

enable: true to enable the self test mode, false otherwise.

getAcceleration(*args)

float * getAcceleration()

Get computed acceleration from the sensor. update() must have been called prior to calling this function.

a pointer to a statically allocated array of 3 floats containing the X, Y, and Z componenets.

getNormalized(*args)

float * getNormalized()

Get the normalized ADC values from the sensor. update() must have been called prior to calling this function.

a pointer to a statically allocated array of 3 ints containing the X, Y, and Z componenets.

getVolts(*args)

float * getVolts()

Get the measured volts from the sensor. update() must have been called prior to calling this function.

a pointer to a statically allocated array of 3 floats containing the X, Y, and Z componenets.

isInFreefall()

bool isInFreefall()

Get freefall detection status.

true if a freefall condition is detected, false otherwise.

setOffset(x, y, z)

void setOffset(float x, float y, float z)

Set sensor offset. This offset is applied to the return values before scaling. Default is 0.0.

x: Offset to apply to X value

y: Offset to apply to Y value

z: Offset to apply to Z value

setRange(range)

void setRange(bool range)

Set the range of the device. This device supports two G ranges: 1.5 and 6. The default is 1.5G.

range: true for 6G, false for 1.5G

setScale(x, y, z)

void setScale(float x, float y, float z)

Set sensor scale. The acceleration return values are scaled by this value before the offset is applied. Default is 1.0.

x: Scale to apply to X value

y: Scale to apply to Y value

z: Scale to apply to Z value

setSleep(sleep)

void setSleep(bool sleep)

Set sleep mode. When in sleep mode the sensor uses minimal power.

sleep: true to go into sleep mode, false to wake up

update()

void update()

Read the sensor status an update internal state. update() must have been called before calling getAcceleration(), getNormalized(), or getVolts().