3 I²C Host Configuration

3.1 Builder: Add I²C Host Component

Application Builder: Click 'Add Component'.
Filter on 'I2C Host' then click the icon to add the I2C_Host Driver.

Tip: There are a number of I²C off-chip drivers, such as I2C EEPROM AT24CM02 and I²C Temp Sensor MCP98xx, providing more specific support for these client devices.

Tip: The I²C Host Example shows up as a loaded module, since it is already added to the project.

3.2 Builder: Select I²C PLIB

Next, click Add Dependency to select.

Tip: For AVR, the Two Wire Interface (TWIx) implements the I²C protocol.

CAUTION: If already added to the project, the I²C PLIB may not be in its default configuration. A component's configuration can be reset as follows:

Click Register Initialization.
From Track Changes, click 'Reset to MCC defaults'.
Confirm that all user changes will be reset.

3.3 Set I2Cx_Host Custom Name to I2C_Host

Click the Custom Name field and remove any numbering from the Peripheral Library (PLIB), setting the value to I2C_Host.

Tip: Setting the Custom Name to a known value will set the name of the i2c_host_interface_t structure. It ensures that the generated example code will match that in the example. See below the code completion from MPLAB® X IDE.

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