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@ -1,334 +0,0 @@
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/**************************************************************************//**
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* \brief EEPROM 24C128 / 24C256 library for Arduino
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* \author Copyright (C) 2012 Julien Le Sech - www.idreammicro.com
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* \version 1.0
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* \date 20120203
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*
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* This file is part of the EEPROM 24C128 / 24C256 library for Arduino.
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*
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* This library is free software: you can redistribute it and/or modify it under
|
||||
* the terms of the GNU Lesser General Public License as published by the Free
|
||||
* Software Foundation, either version 3 of the License, or (at your option) any
|
||||
* later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
||||
* details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public License
|
||||
* along with this program. If not, see http://www.gnu.org/licenses/
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******************************************************************************/
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/**************************************************************************//**
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* \file Eeprom24C128_256.cpp
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******************************************************************************/
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/******************************************************************************
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* Header file inclusions.
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******************************************************************************/
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#include <Arduino.h>
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#include <Wire.h>
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#include <Eeprom24C128_256.h>
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/******************************************************************************
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* Private macro definitions.
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******************************************************************************/
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/**************************************************************************//**
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* \def EEPROM__PAGE_SIZE
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* \brief Size of a page in EEPROM memory.
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* This size is given by EEPROM memory datasheet.
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******************************************************************************/
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#define EEPROM__PAGE_SIZE 64
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/**************************************************************************//**
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* \def EEPROM__RD_BUFFER_SIZE
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* \brief Size of input TWI buffer.
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* This size is equal to BUFFER_LENGTH defined in Wire library (32 bytes).
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******************************************************************************/
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#define xBUFFER_LENGTH 24
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#define EEPROM__RD_BUFFER_SIZE xBUFFER_LENGTH
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/**************************************************************************//**
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* \def EEPROM__WR_BUFFER_SIZE
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* \brief Size of output TWI buffer.
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* This size is equal to BUFFER_LENGTH - 2 bytes reserved for address.
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******************************************************************************/
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#define EEPROM__WR_BUFFER_SIZE (xBUFFER_LENGTH - 2)
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/******************************************************************************
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* Public method definitions.
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******************************************************************************/
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/**************************************************************************//**
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* \fn Eeprom24C128_256::Eeprom24C128_256(byte deviceAddress)
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*
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* \brief Constructor.
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*
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* \param deviceAddress EEPROM address on TWI bus.
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******************************************************************************/
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Eeprom24C128_256::Eeprom24C128_256
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(
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byte deviceAddress
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){
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m_deviceAddress = deviceAddress;
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}
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/**************************************************************************//**
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* \fn void Eeprom24C128_256::initialize()
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*
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* \brief Initialize library and TWI bus.
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*
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* If several devices are connected to TWI bus, this method mustn't be
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* called. TWI bus must be initialized out of this library using
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* Wire.begin() method.
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******************************************************************************/
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void
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Eeprom24C128_256::initialize()
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{
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Wire.begin();
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}
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/**************************************************************************//**
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* \fn void Eeprom24C128_256::writeByte(
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* word address,
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* byte data)
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*
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* \brief Write a byte in EEPROM memory.
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*
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* \remarks A delay of 10 ms is required after write cycle.
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*
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* \param address Address.
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* \param data Byte to write.
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******************************************************************************/
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void
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Eeprom24C128_256::writeByte
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(
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word address,
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byte data
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){
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Wire.beginTransmission(m_deviceAddress);
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Wire.write(address >> 8);
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Wire.write(address & 0xFF);
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Wire.write(data);
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Wire.endTransmission();
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}
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/**************************************************************************//**
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* \fn void Eeprom24C128_256::writeBytes(
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* word address,
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* word length,
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* byte* p_data)
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*
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* \brief Write bytes in EEPROM memory.
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*
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* \param address Start address.
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* \param length Number of bytes to write.
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* \param[in] p_data Bytes to write.
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******************************************************************************/
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void
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Eeprom24C128_256::writeBytes
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(
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word address,
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word length,
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byte* p_data
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){
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// Write first page if not aligned.
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byte notAlignedLength = 0;
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byte pageOffset = address % EEPROM__PAGE_SIZE;
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if (pageOffset > 0)
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{
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notAlignedLength = EEPROM__PAGE_SIZE - pageOffset;
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if (length < notAlignedLength)
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{
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notAlignedLength = length;
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}
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writePage(address, notAlignedLength, p_data);
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length -= notAlignedLength;
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}
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if (length > 0)
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{
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address += notAlignedLength;
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p_data += notAlignedLength;
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// Write complete and aligned pages.
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word pageCount = length / EEPROM__PAGE_SIZE;
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for (word i = 0; i < pageCount; i++)
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{
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writePage(address, EEPROM__PAGE_SIZE, p_data);
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address += EEPROM__PAGE_SIZE;
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p_data += EEPROM__PAGE_SIZE;
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length -= EEPROM__PAGE_SIZE;
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}
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if (length > 0)
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{
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// Write remaining uncomplete page.
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writePage(address, length, p_data);
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}
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}
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}
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/**************************************************************************//**
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* \fn byte Eeprom24C128_256::readByte(word address)
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*
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* \brief Read a byte in EEPROM memory.
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*
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* \param address Address.
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*
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* \return Read byte.
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******************************************************************************/
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byte
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Eeprom24C128_256::readByte
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(
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word address
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){
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Wire.beginTransmission(m_deviceAddress);
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Wire.write(address >> 8);
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Wire.write(address & 0xFF);
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Wire.endTransmission();
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Wire.requestFrom(m_deviceAddress, (byte)1);
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byte data = 0;
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if (Wire.available())
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{
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data = Wire.read();
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}
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return data;
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}
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/**************************************************************************//**
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* \fn void Eeprom24C128_256::readBytes(
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* word address,
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* word length,
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* byte* p_data)
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*
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* \brief Read bytes in EEPROM memory.
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*
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* \param address Start address.
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* \param length Number of bytes to read.
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* \patam[in] p_data Byte array to fill with read bytes.
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******************************************************************************/
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void
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Eeprom24C128_256::readBytes
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(
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word address,
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word length,
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byte* p_data
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){
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byte bufferCount = length / EEPROM__RD_BUFFER_SIZE;
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for (byte i = 0; i < bufferCount; i++)
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{
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word offset = i * EEPROM__RD_BUFFER_SIZE;
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readBuffer(address + offset, EEPROM__RD_BUFFER_SIZE, p_data + offset);
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}
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byte remainingBytes = length % EEPROM__RD_BUFFER_SIZE;
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word offset = length - remainingBytes;
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readBuffer(address + offset, remainingBytes, p_data + offset);
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}
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/******************************************************************************
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* Private method definitions.
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******************************************************************************/
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/**************************************************************************//**
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* \fn void Eeprom24C128_256::writePage(
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* word address,
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* byte length,
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* byte* p_data)
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*
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* \brief Write page in EEPROM memory.
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*
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* \param address Start address.
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* \param length Number of bytes (EEPROM__PAGE_SIZE bytes max).
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* \param[in] p_data Data.
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******************************************************************************/
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void
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Eeprom24C128_256::writePage
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(
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word address,
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byte length,
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byte* p_data
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){
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// Write complete buffers.
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byte bufferCount = length / EEPROM__WR_BUFFER_SIZE;
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for (byte i = 0; i < bufferCount; i++)
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{
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byte offset = i * EEPROM__WR_BUFFER_SIZE;
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writeBuffer(address + offset, EEPROM__WR_BUFFER_SIZE, p_data + offset);
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}
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// Write remaining bytes.
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byte remainingBytes = length % EEPROM__WR_BUFFER_SIZE;
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byte offset = length - remainingBytes;
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writeBuffer(address + offset, remainingBytes, p_data + offset);
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}
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/**************************************************************************//**
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* \fn void Eeprom24C128_256::writeBuffer(
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* word address,
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* byte length,
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* byte* p_data)
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*
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* \brief Write bytes into memory.
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*
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* \param address Start address.
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* \param length Number of bytes (EEPROM__WR_BUFFER_SIZE bytes max).
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* \param[in] p_data Data.
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******************************************************************************/
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void
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Eeprom24C128_256::writeBuffer
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(
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word address,
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byte length,
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byte* p_data
|
||||
){
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Wire.beginTransmission(m_deviceAddress);
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Wire.write(address >> 8);
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Wire.write(address & 0xFF);
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for (byte i = 0; i < length; i++)
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{
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Wire.write(p_data[i]);
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}
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Wire.endTransmission();
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// Write cycle time (tWR). See EEPROM memory datasheet for more details.
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delay(10);
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}
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/**************************************************************************//**
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* \fn void Eeprom24C128_256::readBuffer(
|
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* word address,
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* byte length,
|
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* byte* p_data)
|
||||
*
|
||||
* \brief Read bytes in memory.
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||||
*
|
||||
* \param address Start address.
|
||||
* \param length Number of bytes (EEPROM__RD_BUFFER_SIZE bytes max).
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* \param[in] p_data Buffer to fill with read bytes.
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******************************************************************************/
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||||
void
|
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Eeprom24C128_256::readBuffer
|
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(
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word address,
|
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byte length,
|
||||
byte* p_data
|
||||
){
|
||||
Wire.beginTransmission(m_deviceAddress);
|
||||
Wire.write(address >> 8);
|
||||
Wire.write(address & 0xFF);
|
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Wire.endTransmission();
|
||||
Wire.requestFrom(m_deviceAddress, length);
|
||||
for (byte i = 0; i < length; i++)
|
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{
|
||||
if (Wire.available())
|
||||
{
|
||||
p_data[i] = Wire.read();
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||||
}
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||||
}
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||||
}
|
|
@ -1,212 +0,0 @@
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/**************************************************************************//**
|
||||
* \brief EEPROM 24C128 / 24C256 library for Arduino
|
||||
* \author Copyright (C) 2012 Julien Le Sech - www.idreammicro.com
|
||||
* \version 1.0
|
||||
* \date 20120203
|
||||
*
|
||||
* This file is part of the EEPROM 24C128 / 24C256 library for Arduino.
|
||||
*
|
||||
* This library is free software: you can redistribute it and/or modify it under
|
||||
* the terms of the GNU Lesser General Public License as published by the Free
|
||||
* Software Foundation, either version 3 of the License, or (at your option) any
|
||||
* later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
||||
* details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public License
|
||||
* along with this program. If not, see http://www.gnu.org/licenses/
|
||||
******************************************************************************/
|
||||
|
||||
/**************************************************************************//**
|
||||
* \headerfile Eeprom24C128_256.h
|
||||
******************************************************************************/
|
||||
|
||||
#ifndef Eeprom24C128_256_h
|
||||
#define Eeprom24C128_256_h
|
||||
|
||||
/******************************************************************************
|
||||
* Header file inclusion.
|
||||
******************************************************************************/
|
||||
|
||||
#include <Arduino.h>
|
||||
|
||||
/**************************************************************************//**
|
||||
* \class Eeprom24C128_256
|
||||
*
|
||||
* \brief EEPROM 24C128 / 24C256 memory driver.
|
||||
*
|
||||
* This driver is mainly designed for 24C128 and 24C256 EEPROM memories. It's
|
||||
* also suitable for 24C512 memories.
|
||||
******************************************************************************/
|
||||
class Eeprom24C128_256
|
||||
{
|
||||
public:
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn Eeprom24C128_256(byte deviceAddress)
|
||||
*
|
||||
* \brief Constructor.
|
||||
*
|
||||
* \param deviceAddress EEPROM address on TWI bus.
|
||||
**********************************************************************/
|
||||
Eeprom24C128_256
|
||||
(
|
||||
byte deviceAddress
|
||||
);
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn void initialize()
|
||||
*
|
||||
* \brief Initialize library abnd TWI bus.
|
||||
*
|
||||
* If several devices are connected to TWI bus, this method mustn't be
|
||||
* called. TWI bus must be initialized out of this library using
|
||||
* Wire.begin() method.
|
||||
**********************************************************************/
|
||||
void
|
||||
initialize();
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn void writeByte(
|
||||
* word address,
|
||||
* byte data)
|
||||
*
|
||||
* \brief Write a byte in EEPROM memory.
|
||||
*
|
||||
* \remarks A delay of 10 ms is required after write cycle.
|
||||
*
|
||||
* \param address Address.
|
||||
* \param data Byte to write.
|
||||
**********************************************************************/
|
||||
void
|
||||
writeByte
|
||||
(
|
||||
word address,
|
||||
byte data
|
||||
);
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn void writeBytes(
|
||||
* word address,
|
||||
* word length,
|
||||
* byte* p_data)
|
||||
*
|
||||
* \brief Write bytes in EEPROM memory.
|
||||
*
|
||||
* \param address Start address.
|
||||
* \param length Number of bytes to write.
|
||||
* \param[in] p_data Bytes to write.
|
||||
**********************************************************************/
|
||||
void
|
||||
writeBytes
|
||||
(
|
||||
word address,
|
||||
word length,
|
||||
byte* p_data
|
||||
);
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn byte readByte(word address)
|
||||
*
|
||||
* \brief Read a byte in EEPROM memory.
|
||||
*
|
||||
* \param address Address.
|
||||
*
|
||||
* \return Read byte.
|
||||
**********************************************************************/
|
||||
byte
|
||||
readByte
|
||||
(
|
||||
word address
|
||||
);
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn void readBytes(
|
||||
* word address,
|
||||
* word length,
|
||||
* byte* p_data)
|
||||
*
|
||||
* \brief Read bytes in EEPROM memory.
|
||||
*
|
||||
* \param address Start address.
|
||||
* \param length Number of bytes to read.
|
||||
* \patam[in] p_data Byte array to fill with read bytes.
|
||||
**********************************************************************/
|
||||
void
|
||||
readBytes
|
||||
(
|
||||
word address,
|
||||
word length,
|
||||
byte* p_buffer
|
||||
);
|
||||
|
||||
private:
|
||||
|
||||
byte m_deviceAddress;
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn void writePage(
|
||||
* word address,
|
||||
* byte length,
|
||||
* byte* p_data)
|
||||
*
|
||||
* \brief Write page in EEPROM memory.
|
||||
*
|
||||
* \param address Start address.
|
||||
* \param length Number of bytes (64 bytes max).
|
||||
* \param[in] p_data Data.
|
||||
**********************************************************************/
|
||||
void
|
||||
writePage
|
||||
(
|
||||
word address,
|
||||
byte length,
|
||||
byte* p_data
|
||||
);
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn void writeBuffer(
|
||||
* word address,
|
||||
* byte length,
|
||||
* byte* p_data)
|
||||
*
|
||||
* \brief Write bytes into memory.
|
||||
*
|
||||
* \param address Start address.
|
||||
* \param length Number of bytes (30 bytes max).
|
||||
* \param[in] p_date Data.
|
||||
**********************************************************************/
|
||||
void
|
||||
writeBuffer
|
||||
(
|
||||
word address,
|
||||
byte length,
|
||||
byte* p_data
|
||||
);
|
||||
|
||||
/******************************************************************//**
|
||||
* \fn void readBuffer(
|
||||
* word address,
|
||||
* byte length,
|
||||
* byte* p_data)
|
||||
*
|
||||
* \brief Read bytes in memory.
|
||||
*
|
||||
* \param address Start address.
|
||||
* \param length Number of bytes to read (32 bytes max).
|
||||
* \param[in] p_data Buffer to fill with read bytes.
|
||||
**********************************************************************/
|
||||
void
|
||||
readBuffer
|
||||
(
|
||||
word address,
|
||||
byte length,
|
||||
byte* p_data
|
||||
);
|
||||
};
|
||||
|
||||
#endif // Eeprom24C128_256_h
|
||||
|
|
@ -1,9 +0,0 @@
|
|||
name=EEPROM 24C128
|
||||
version=
|
||||
author=Julien Le Sech
|
||||
maintainer=Julien Le Sech - www.idreammicro.com
|
||||
sentence=EEPROM 24C128 / 24C256 memory driver.
|
||||
paragraph=EEPROM 24C128 / 24C256 memory driver.
|
||||
category=
|
||||
url=
|
||||
architectures=*
|
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Reference in New Issue