1.7 I2C Driver Asynchronous - I2C EEPROM
This example application shows how to use the I2C driver in asynchronous mode to perform operations on the EEPROM.
Description
This example uses the I2C driver in asynchronous mode to communicate with the EEPROM to perform write and read operations in Bare-Metal environment. This application uses I2C driver to read and write data from an from an on-Board 24AA025E48 EEPROM device.
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_9x60_curiosity.X | MPLABX project for SAM9X60-Curiosity board |
| sam_9x60_curiosity_freertos.X | MPLABX project for SAM9X60-Curiosity board |
Setting Up AT91Bootstrap loader
To load the application binary onto the target device, we need to use at91bootstrap loader. Refer to the at91bootstrap loader documentation for details on how to use it to bootstrap the application binaries.
Setting Up the Hardware
The following table shows the target hardware for the application projects.
| Project Name | Description |
|---|---|
| sam_9x60_curiosity.X sam_9x60_curiosity_freertos.X | SAM9X60-Curiosity board |
Setting Up SAM9X60-Curiosity Board
- Connect the USB port J1 on board to the computer using a micro USB cable (to power the board)
- Connect the JTAG J12 on board to the computer using a JTAG based debugger
Running the Application
- Build and program the application using its IDE
- The LED is turned ON when the value read from the EEPROM matched with the written value
| Board | LED Name |
|---|---|
| SAM9X60-Curiosity board | RGB_LED (Green) |