1.29 SPI EEPROM AT25 Driver - EEPROM Read Write

This example application shows how to use the AT25 driver to perform read and write operations on AT25 series of EEPROM.

Description

This example uses the AT25 driver to communicate with the SPI based AT25 series of external EEPROMs to perform write and read operations in Bare-Metal environment.

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/spi_eeprom/at25/at25_eeprom_read_write/firmware.

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

Project NameDescription
pic32cz_ca70_curiosity_ultra.XMPLABX project for PIC32CZ CA70 Curiosity Ultra Development Kit
pic32cz_ca70_curiosity_ultra_freertos.XMPLABX project for PIC32CZ CA70 Curiosity Ultra Development Kit

Setting Up the Hardware

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

Project NameDescription
pic32cz_ca70_curiosity_ultra.X

pic32cz_ca70_curiosity_ultra_freertos.X

MPLABX project for PIC32CZ CA70 Curiosity Ultra Development Kit

Setting Up PIC32CZ CA70 Curiosity Ultra Development Kit

  • To run the demo, the following additional hardware are required:
  • Install EEPROM 4 click board to the click slot provided on board
  • 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 is turned ON when the value read from EEPROM matches with the written data
Refer to the following table for LED name:
BoardLED Name
PIC32CZ CA70 Curiosity Ultra Development KitLED1