b8c0f2de6c
This patch removes a defunct EEPROM implementation from the native platform and provides a new EEPROM implementation for the native cpu. The previous implementation appears to be vestigal. This is useful for testing code which uses the EEPROM without running the code on the actual hardware. By default the code will create a new temporary file as the EEPROM backing, reinitializing each time. If you would like to preserve the EEPROM contents or specify a specific EEPROM file to use, you can set the `CONTIKI_EEPROM` environment variable to the name of the EEPROM file you wish to use instead. If it already exists, its contents will be used. If it does not already exist, it will be created and initialized by filling it with `0xFF`---just like a real EEPROM. A new example is also included, which was used to verify the correctness of the implementation. It can easily be used to verify the EEPROM implementations of other targets.
99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/*
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* Copyright (c) 2013, Robert Quattlebaum
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* A very simple Contiki application showing how to read and write
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* data using Contiki's EEPROM API.
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* \author
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* Robert Quattlebaum <darco@deepdarc.com>
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*/
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#include "contiki.h"
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#include "dev/eeprom.h"
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#include <stdio.h> /* For printf() */
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/*---------------------------------------------------------------------------*/
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PROCESS(eeprom_test_process, "EEPROM Test Process");
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AUTOSTART_PROCESSES(&eeprom_test_process);
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(eeprom_test_process, ev, data)
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{
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static uint8_t counter = 0;
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static eeprom_addr_t addr = 0;
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PROCESS_BEGIN();
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printf("eeprom-test: Size = %d bytes\n", EEPROM_SIZE);
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/* Check to see if the EEPROM is empty */
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for(addr = 0; addr < EEPROM_SIZE; ++addr) {
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uint8_t byte;
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eeprom_read(addr, &byte, 1);
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if(byte != 0xFF) {
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break;
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}
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}
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if(addr == EEPROM_SIZE) {
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printf("eeprom-test: EEPROM is empty. Proceding with write test...\n");
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counter = 0;
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for(addr = 0; addr < EEPROM_SIZE; ++addr) {
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eeprom_write(addr, &counter, 1);
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counter += 1;
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}
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counter = 0;
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for(addr = 0; addr < EEPROM_SIZE; ++addr) {
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uint8_t byte;
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eeprom_read(addr, &byte, 1);
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if(byte != counter) {
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printf("eeprom-test: EEPROM write failure!\n");
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break;
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}
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counter += 1;
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}
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printf("eeprom-test: EEPROM write test success!\n");
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} else {
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printf("eeprom-test: EEPROM is NOT empty! Skipping write test.\n");
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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