Does the "GPIO Read" block for Raspberry Pi set pull-up/down resistors?

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Jonathan S 2022-5-18

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回答： Chetan 2023-11-8

Does the "GPIO Read" block from the Simulink Support Package for Raspberry Pi Hardware set the pin to use internal pull-up or pull-down resistors or does it leave it at the default state?

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Answer 1

Chetan 2023-11-8

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Hello @Jonathan S,

I understand that you're having some challenges with configuring the pull-up/pull-down resistors.

In MATLAB, there's a function called "configurePin" which can be used to enable the pull-up resistor for a specific pin.

This function is part of the MATLAB Support Package for Arduino Hardware.

Here's a brief example of how you can use it:

% Create a connection to your Arduino
a = arduino('COM4', 'Uno');
% Configure the internal pull-up resistor on pin D3
configurePin(a, 'D3', 'pullup');

The default state of the GPIO pins can be either pull-up or pull-down depending on the specific pin. The pull-up/pull-down state is not set for some pins, which means they will be floating until you explicitly set the pull-up or pull-down.

Refer to the following MathWorks documentation for more details about the configure in:

https://www.mathworks.com/help/supportpkg/arduinoio/ref/configurepin.html

Hope it Helps !