> ## Documentation Index
> Fetch the complete documentation index at: https://notevil.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# CAPLfunctionLINGetMasterResistorState

[Open topic with navigation](../../../../../CANoeDEFamily.htm#Topics/CAPLFunctions/LIN/Functions/CAPLfunctionLINGetMasterResistorState.md)

[CAPL Functions](../../CAPLfunctions.md) » [LIN](../CAPLfunctionsLINOverview.md) » linGetMasterResistorState

# linGetMasterResistorState

[Valid for](../../../Shared/FeatureAvailability.md): CANoe DE

## Function Syntax

```
long linGetMasterResistorState();
```

## Description

Returns the internal master resistor’s current state of the LIN interface hardware.

**Note**: This function only works with LIN core network interfaces.

## Parameters

—

## Return Values

* **State of the master resistor**
  * 1: Resistor is on
  * 0: Resistor is off

## Example

```c theme={null}
// on pressing key ‘c’ switch on the master resistor
...
on key 'c'
{
  long ret;
  ret = linGetMasterResistorState();
  write("Resistor State: %d", ret);
}
```