Mcp33xx.ReadDifferential(Int32, Int32) Method

Definition

Namespace:

Iot.Device.Adc

Assembly:

Iot.Device.Bindings.dll

Package:

Iot.Device.Bindings v3.0.0

Reads a 13 bit signed value from the device using differential inputs

public override int ReadDifferential (int valueChannel, int referenceChannel);

override this.ReadDifferential : int * int -> int

Public Overrides Function ReadDifferential (valueChannel As Integer, referenceChannel As Integer) As Integer

Parameters

valueChannel

Int32

Channel which represents the signal driving the value in a positive direction (valid values: 0 to channelcount - 1).

referenceChannel

Int32

Channel which represents the signal driving the value in a negative direction (valid values: 0 to channelcount - 1).

Returns

Int32

A 13 bit signed value corresponding to relative voltage level on specified device channels

Remarks

The value that is read respresents the difference between the voltage on the value channel and the voltage on the reference channel (valueChannel Reading - referenceChannel Reading). If the valueChannel and the referenceChannel are part of the same channel pairing then the ADC converter will internally subtract the two values. If not then the subtraction is performed in software which may mean that errors are introduced with rapidly changing signals.