contiki/examples/eeprom-test/eeprom-test.c

/*
 * Copyright (c) 2013, Robert Quattlebaum
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the Contiki operating system.
 *
 */

/**
 * \file
 *         A very simple Contiki application showing how to read and write
 *         data using Contiki's EEPROM API.
 * \author
 *         Robert Quattlebaum <darco@deepdarc.com>
 */

#include "contiki.h"
#include "dev/eeprom.h"

#include <stdio.h>              /* For printf() */

/*---------------------------------------------------------------------------*/
PROCESS(eeprom_test_process, "EEPROM Test Process");
AUTOSTART_PROCESSES(&eeprom_test_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(eeprom_test_process, ev, data)
{
  static uint8_t counter = 0;

  static eeprom_addr_t addr = 0;

  PROCESS_BEGIN();

  printf("eeprom-test: Size = %d bytes\n", EEPROM_SIZE);

  /* Check to see if the EEPROM is empty */
  for(addr = 0; addr < EEPROM_SIZE; ++addr) {
    uint8_t byte;

    eeprom_read(addr, &byte, 1);
    if(byte != 0xFF) {
      break;
    }
  }

  if(addr == EEPROM_SIZE) {
    printf("eeprom-test: EEPROM is empty. Proceding with write test...\n");

    counter = 0;
    for(addr = 0; addr < EEPROM_SIZE; ++addr) {
      eeprom_write(addr, &counter, 1);
      counter += 1;
    }

    counter = 0;
    for(addr = 0; addr < EEPROM_SIZE; ++addr) {
      uint8_t byte;

      eeprom_read(addr, &byte, 1);
      if(byte != counter) {
        printf("eeprom-test: EEPROM write failure!\n");
        break;
      }
      counter += 1;
    }

    printf("eeprom-test: EEPROM write test success!\n");
  } else {
    printf("eeprom-test: EEPROM is NOT empty! Skipping write test.\n");
  }

  PROCESS_END();
}
/*---------------------------------------------------------------------------*/