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Knowledge base » Software reference » GPI – General purpose inputs

GPI – General purpose inputs

By  Benoît Steinmann Updated on SD005

Table of Contents

The GPI block reads the value of the General Purpose Inputs (GPI).

Signal specification

The output signal returns the value of one GPI pin.

Parameters

  • Device ID selects which B-Box/B-Board to address when used in a multi-device configuration.
  • GPI bit selects one pin to read.
  • Show simulation input port defines if the simulation input is displayed or not.
General purpose inputs Simulink dialog parameters

PLECS block

Signal specification

The output signal returns the value of one GPI pin.

General purpose inputs PLECS block

Parameters

  • Device ID selects which B-Box/B-Board to address when used in a multi-device configuration.
  • GPI pin(s) (vectorizable) selection the GPI pin(s) to read. It can be a single value or a vector.
  • Simulation input port defines if the target inport is displayed or not. This parameter is only used in simulation.
General purpose inputs PLECS dialog parameters

C++ functions

int Gpi_GetBit(unsigned int bit, unsigned int device=0);Code language: C++ (cpp)

Returns the GPI pin value (0 or 1).

It has to be called in the control interrupt routine.

Parameters

  • bit: the GPI pin number
  • device: the id of the addressed device (optional, used in multi-device configuration only)

Return value

  • The GPI pin value (0 or 1)
int Gpi_Get(unsigned int device=0);Code language: C++ (cpp)

Return the whole 16 GPI inputs values in the form of a 16-bit value.

It has to be called in the interrupt.

Parameters

  • device: the id of the addressed device (optional, used in multi-device configuration only)

Return value

  • The whole 16 inputs GPI value in the form of a 16-bit value

Benoit is an embedded systems expert and the leader of software and firmware developments at imperix. On the knowledge base, he is the author of numerous software reference documents.

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