pyupm_mmc35240 module

class pyupm_mmc35240.MMC35240(device)

Bases: object

MMC35240 Tri-axis Magnetic Sensor API.

ID: mmc35240

Name: MMC35240 Tri-axis Magnetic Sensor

Category: compass

Manufacturer: Memsic

Connection: iio i2c The MMC3524xPJ is a complete 3-axis magnetic sensor

C++ includes: mmc35240.hpp

disableBuffer()

bool disableBuffer()

Disable trigger buffer

enable3AxisChannel()

bool enable3AxisChannel()

Enable 3 axis scan element

enableBuffer(length)

bool enableBuffer(int length)

Enable trigger buffer

length: buffer length in integer

extract3Axis(data, x, y, z)

void extract3Axis(char *data, float *x, float *y, float *z)

Process enabled channel buffer and return x, y, z axis

data: Enabled channel data, 6 bytes, each axis 2 bytes

x: X-Axis

y: Y-Axis

z: Z-Axis

getCalibratedData(cal_level, offset, w_invert, bfield)

void getCalibratedData(int *cal_level, double offset[3][1], double w_invert[3][3], double *bfield)

Get calibrated data

getCalibratedLevel()

int getCalibratedLevel()

Get calibrated level

getChannelValue(input, chan)

int64_t getChannelValue(unsigned char *input, mraa_iio_channel *chan)

Extract the channel value based on channel type

input: Channel data

chan: MRAA iio-layer channel info

initCalibrate()

void initCalibrate()

Reset calibration data and start collect calibration data again

installISR(isr, arg)

void installISR(void(*isr)(char *, void *), void *arg)

Installs an interrupt service routine (ISR) to be called when an interrupt occurs

isr: Pointer to a function to be called on interrupt

arg: Pointer to an object to be supplied as an argument to the ISR.

loadCalibratedData(cal_level, offset, w_invert, bfield)

void loadCalibratedData(int cal_level, double offset[3][1], double w_invert[3][3], double bfield)

Load calibrated data

setSamplingFrequency(sampling_frequency)

bool setSamplingFrequency(const float sampling_frequency)

Set sampling frequency

sampling_frequency: sampling frequency in float Available sampling frequency are 1.5, 13, 25, 50 Default sampling frequency is 1.500000

setScale(scale)

bool setScale(const float scale)

Set scale

scale: in float Kernel driver does not support changing the value of scale on run-time Default scale is 0.001000