Messages

The Message class encapsulates all types of sensor data in a generic container. Data from different sensors are interpreted differently so users will need to be conscious of what type they are requesting their data be converted to. Available message types are outlined in the below table.

Message Type	Description
GpioAbsRefMessage	GPIO analog input data as an absolute reference value
GpioAdcMessage	GPIO analog input data as an ADC ratio
GpioDigitalMessage	GPIO digital input data
MwrAccelAxisMessage	XYZ axis data from the MetaWearR accelerometer separated into individual axis values
MwrAccelCombinedAxisMessage	XYZ axis data from the MetaWearR accelerometer combined into 1 value
SwitchMessage	Data from switch state changes
Temperature	Data from a temperature sensor

All messages can be interpreted as a byte, short, integer, or long. For some sensors, these primitive types do not provide a meaningful interpretation of the data and require a different interpretation. The following sections will cover what the data will look like if you call Message.getData with specific type classes.

GpioAbsRefMessage

Type	Description
Short.class	Interprets GPIO analog input data in units of mV
Float.class	Interprets GPIO analog input data in units of V

GpioAdcMessage

Type	Description
Short.class	Interprets the ADC data as a short

MwrAccelAxisMessage

Type	Description
AxisG.class	Interpret the XYZ axis data in units of Gs
AxisMilliG.class	Interpret the XYZ axis data in units of milliGs

MwrAccelCombinedAxisMessage

Type	Description
Float.class	Interpret the combined data in units of Gs
Short.class	Interpret the combined data in units of milliGs

SwitchMessage

Type	Description
Boolean.class	True if pressed, false if released
Byte.class	1 if pressed, 0 if released

TemperatureMessage

Type	Description
Float.class	Interprets the temperature as degrees Celsius.