MCAL DIO Channel Read

R2026b

Read logical value of the specified DIO channel identifier

Since R2026a

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MCAL DIO Channel Read block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Embedded Coder Support Package for Renesas RH850 Microcontrollers / Microcontroller Abstraction Layer (MCAL) Blocks

Description

Use the MCAL DIO Channel Read block to read the logical value of a specified channel identifier.

The block outputs the logical value of the selected DIO channel at each simulation step or sample time.

Before using this block, configure pin modes and DIO channels, select the Configuration Description File (CDF) in Simulink model configuration, and then integrate the block into your target-specific model for code generation and deployment. For information on configuring correct and portable Digital Input/Output (DIO) workflow using the MCAL DIO module in Simulink and AUTOSAR-based projects, see Getting Started With DIO Using MCAL.

Examples

Getting Started with MCAL DIO Blocks on Renesas RH850 Microcontrollers

Control a digital output on a Renesas RH850/U2A16 Microcontroller using the AUTOSAR MCAL DIO Channel Write block in Simulink. The example uses an onboard LED to demonstrate how MCAL DIO configuration and model-based design work together to generate, deploy, and run the model on RH850 hardware to drive an LED.

• Open Live Script

Ports

Output

Channel — Channel value

scalar

Outputs the logical value of the specified DIO channel.

Parameters

Channel identifier — Specific digital input/output channels to read

'DioChannel' (default)

Specify the unique identifier for the DIO channel to be read. This links the MCAL DIO Channel Read block to a specific group of digital input/output channels as configured in the CDF file. Click Get dio channels to view and select from the list of available channel names configured in the CDF.

Programmatic Use

Block Parameter: Pins

Sample time — Frequency at which block reads value

-1 (default) | non-negative real value

Specify how often (in seconds) the block reads the logical value. Enter a value greater than zero. When you specify this parameter as -1, Simulink^® determines the best sample time for the block based on the block context within the model.

Programmatic Use

Block Parameter: SampleTime

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"rh850mcallib/MCAL DIO Channel Read"

Example: add_block("rh850mcallib/MCAL DIO Channel Read","myModel/myBlock",MakeNameUnique="on")

Version History

Introduced in R2026a