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# 1.6 I2C Driver Asynchronous - I2C EEPROM

This example application demonstrates how to use the I2C driver in asynchronous mode to perform read/write operations on an EEPROM.

## Description

This example uses the I2C driver in asynchronous mode to communicate with an EEPROM to perform read and write operations.

The application communicates with the EEPROM 3 click board that has AT24CM02 EEPROM on it.

## Downloading and Building the Application

To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.

Path of the application within the repository is apps/driver/i2c/async/i2c_eeprom/firmware.

To build the application, refer to the following table and open the project using its IDE.

Project Name | Description
--- | ---
sam_l21_xpro.X | MPLABX project for SAM L21 Xplained Pro Evaluation Kit

## Setting Up the Hardware

The following table shows the target hardware for the application projects.

Project Name | Description
--- | ---
sam_l21_xpro.X | SAM L21 Xplained Pro Evaluation Kit

### Setting Up SAM L21 Xplained Pro Evaluation Kit

- To run the demo, the following additional hardware are required:
  - EEPROM 3 click board
  - mikroBUS Xplained Pro board
- Install an EEPROM 3 click board on to the mikroBUS Xplained Pro board
- Connect the mikroBUS Xplained Pro board to the EXT1 header of the SAM L21 Xplained Pro Evaluation Kit
- Connect the Debug USB port on the board to the computer using a micro USB cable

## Running the Application

1. Build and program the application using its IDE
2. The LED indicates the success or failure. The LED is turned ON when the data read from EEPROM matches with the written data

Refer to the following table for LED name:

Board | LED Name
--- | ---
SAM L21 Xplained Pro Evaluation Kit | LED0