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

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