I2cMasterSlave

🌶️🌶️ - I2C Master Slave sample

Shows how to use the System.Device.I2c System.Device.I2c.Slave APIs to connect two I2C devices.

Hardware requirements

Two ESP32 devices board. The code sample is demonstrative of the use of the I2C and I2C slave APIs.

The native driver sets the GPIOs for the I2C bus to use internal pull-ups. For most scenarios, this is sufficient. However, for long buses strong pull-ups maybe required.

Related topics

Reference

• System.Device.I2c
• System.Device.I2c.Slave

Build the sample

1. Start Microsoft Visual Studio 2022 or Visual Studio 2019 (Visual Studio 2017 should be OK too) and select File > Open > Project/Solution.
2. Starting in the folder where you unzipped the samples/cloned the repository, go to the subfolder for this specific sample. Double-click the Visual Studio Solution (.sln) file.
3. Press Ctrl+Shift+B, or select Build > Build Solution.

Run the sample

The next steps depend on whether you just want to deploy the sample or you want to both deploy and run it.

Deploying the sample

• Select Build > Deploy Solution.

Deploying and running the sample

• To debug the sample and then run it, press F5 or select Debug > Start Debugging.

Note

Important: Before deploying or running the sample, please make sure your device is visible in the Device Explorer.

Tip: To display the Device Explorer, go to Visual Studio menus: View > Other Windows > Device Explorer.