nes-proj/examples/eeprom-test/eeprom-test.c
Maria Laura Stefanizzi 8de0380efe Eeprom-test example modified
This patch improves the eeprom-test example adding more
tests on the eeprom read/write procedures.
2013-11-27 15:40:07 +01:00

157 lines
4.7 KiB
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() */
void
print_content()
{
eeprom_addr_t addr_row = 0, j;
uint8_t i;
uint8_t byte;
printf("\t");
for(i = 0; i < 16; i++)
printf("0x%x\t", i);
printf
("\n-----------------------------------------------------------------------------------------------------------------------------------------\n");
for(addr_row = 0; addr_row < EEPROM_SIZE / 16; ++addr_row) {
printf("0x%x\t|", addr_row * 16);
for(j = 0; j < 16; j++) {
eeprom_read(addr_row * 16 + j, &byte, 1);
printf("0x%x\t", byte);
}
printf("\n");
}
}
void
erase_content()
{
static eeprom_addr_t addr = 0;
for(addr = 0; addr < EEPROM_SIZE; ++addr) {
eeprom_write(addr, 0, 1);
}
}
/*---------------------------------------------------------------------------*/
PROCESS(eeprom_test_process, "EEPROM Test Process");
AUTOSTART_PROCESSES(&eeprom_test_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(eeprom_test_process, ev, data)
{
static uint8_t counter = 0, error = 0;
static eeprom_addr_t addr = 0;
uint8_t byte;
uint8_t buffer[] =
{ 0xAA, 0xAA, 0xAA, 0xBB, 0xBB, 0xBB, 0xCC, 0xCC, 0xCC, 0xBB,
0xBB, 0xBB, 0xAA, 0xAA, 0xAA, 0xFF, 0xAA, 0xAA, 0xAA, 0xBB,
0xBB, 0xBB, 0xCC, 0xCC, 0xCC, 0xBB, 0xBB, 0xBB, 0xAA, 0xAA,
0xAA, 0xFF, 0xAA, 0xAA, 0xAA, 0xBB, 0xBB, 0xBB, 0xCC, 0xCC,
0xCC, 0xBB, 0xBB, 0xBB, 0xAA, 0xAA, 0xAA, 0xFF
};
PROCESS_BEGIN();
printf("eeprom-test: Size = %d bytes\n", EEPROM_SIZE);
print_content();
printf("\nErase EEPROM content\n");
erase_content();
print_content();
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) {
byte = 0;
eeprom_read(addr, &byte, 1);
if(byte != counter) {
error++;
eeprom_read(addr, &byte, 1);
printf
("eeprom-test: EEPROM write failure! 0x%x =/= 0x%x at address 0x%x\n",
byte, counter, addr);
break;
}
counter += 1;
}
if(error)
printf("eeprom-test: EEPROM write test FAIL!\n%d errors", error);
else
printf("eeprom-test: EEPROM write test success!\n");
print_content();
printf("Fill memory with buffer\n");
for(addr = 0; addr < EEPROM_SIZE; addr += sizeof(buffer)) {
eeprom_write(addr, ((unsigned char *)buffer), sizeof(buffer));
}
/*
printf("Write data buffer %d at address 0x0\n", sizeof(buffer));
eeprom_write(0x0, ((unsigned char *)buffer), sizeof(buffer));
printf("Write data buffer %d at address 0x40\n", sizeof(buffer));
eeprom_write(0x40, ((unsigned char *)buffer), sizeof(buffer));
printf("Write data buffer %d at address 0x95\n", sizeof(buffer));
eeprom_write(0x95, ((unsigned char *)buffer), sizeof(buffer));
*/
print_content();
PROCESS_END();
}
/*---------------------------------------------------------------------------*/