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Developing an DART IoT application on RPi4 - Need to access GPIO

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I'm developing an IoT application for Google Cloud. My goal is to write everything in Dart and Flutter to avoid a project with multiple languages. For the Edge device, I am using a Raspberry PI 4 with Ubuntu server 20.02.2.0 and the latest version of Dart.

I'm having trouble understanding the best way to Interface to the GPIO pins in Dart. Has anyone had success with this?

I've tried rpi_gpio.dart without success, and LGPIO seems to be Python only. Thank you.

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