Altimeter/ Barometer/ Temperature sensor

class MPL3115A2.MPL3115A2

Bases: object

ActiveMode()

Put the sensor in active mode.

Parameters:none – Returns:none

AltimeterMode()

Sets the mode in Altimeter mode.

Parameters:none – Returns:none

BarometerMode()

Sets the sensor in Barometer mode.

Parameters:none – Returns:none

CofigureInterruptPin(interrupt, pin)

Configure the interrupt pin.

Parameters:

• interrupt – Type of interrupt
• pin – Only pin 1 is used

Returns:

none

EnableEventFlags()

Enables the pressure and temp measurement event flags so that we can

test against them. This is recommended in datasheet during setup.

Parameters:none – Returns:none

GetAltitude()

Returns the number of meters above sea level.

Parameters:none – Returns:altitude as a float

GetID()

Returns the Factory Sensor ID.

Parameters:none – Returns:id - Factory ID

GetMode()

Return a bool value indicating wheather the sensor is in Active or Standby mode.

Parameters:none – Returns:Mode - 1 if in Active mode, 0 otherwise

OversampleRate(sampleRate)

Sets the ovsersampling rate.

Parameters:sampleRate – sampleRate is from 0 to 7 Returns:none

ReadAltitude()

Returns the number of meters above sea level.

Parameters:none – Returns:altitude as a float

ReadBarometricPressure()

Reads the current pressure in Pa.

Parameters:none – Returns:current pressure or -1 if no new data is available

ReadByte(address, reg)

Read byte value from register.

Parameters:

• address – Sensor address
• reg – Register address

Returns:

byte read from register

ReadByteArray(address, reg, buffer, length)

Read a byte array from the sensor.

Parameters:

• address – Sensor address
• reg – Register address
• buffer – Data buffer
• length – Data length

Returns:

array - Byte array

ReadTemperature()

Reads the current temperature in degrees Celcius.

Parameters:none – Returns:temp - Returns temperature as a float.

SetAcquisitionTimeStep(ST_Value)

Set the acquisition time step.

Parameters:ST_Value – Time Step value Returns:none

StandbyMode()

Puts the sensor in standby mode. This is needed whenever one wants to modify the control registers.

Parameters:none – Returns:none

ToggleOneShot()

Clears then sets the OST bit which causes the sensor to immediately take another reading

Needed to sample faster than 1Hz.

Parameters:none – Returns:none

TwosToInt(val, len)

Convert twos complement to integer.

Parameters:

• val –
• len –

Returns:

complement - integer value of two’s complement

WriteByte(address, reg, data)

Write byte value from register.

Parameters:

• address – Sensor address
• reg – Register address
• data – Register value

Returns:

none

WriteByteArray(address, reg, buffer)

Writes an array of bytes to the sensor.

Parameters:

• address – Sensor address
• reg – Register address
• buffer – Data buffer
• length – buffer length

Returns:

none