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| Yann |
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/* mbed simplified access to RAMTRON FV24xx Serial 3V F-RAM Memory (I2C)
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* Copyright (c) 2013 ygarcia, MIT License
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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* and associated documentation files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge, publish, distribute,
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* sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#if !defined(__FM24VXX_I2C_H__)
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#define __FM24VXX_I2C_H__
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#include <string>
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#include <vector>
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#include "FM24Vxx_IDs.h"
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#include "FM24Vxx_SN.h"
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#include "Debug.h" // Include mbed header + debug primitives. See DebugLibrary
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namespace _FM24VXX_I2C {
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/** This class provides simplified I2C access to a RAMTRON FV24xx Serial 3V F-RAM Memory device. V0.0.0.1
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*
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* Note that RAMTRON FV24xx Serial 3V F-RAM Memory device could be powered at 3.3V or less only.
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* Note that this header file include following headers:
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* - <string>
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* - <vector>
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* - <mbed.h>
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*
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* @author Yann Garcia (Don't hesitate to contact me: garcia.yann@gmail.com)
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*/
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class CFM24VXX_I2C {
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/** Reference counter used to guarentee unicity of the instance of I2C class
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*/
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static unsigned char I2CModuleRefCounter;
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/** Device address input: A1, A2 (Pins <2,3>). See FM24V10_ds.pdf - Clause Pin Configuration
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*/
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unsigned char _slaveAddress;
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/** WP state indicator (pin 7); true is write protected, false otherwise
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*/
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DigitalOut *_wp;
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/** An unique instance of I2C class
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*/
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I2C *_i2cInstance;
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/** Device ID
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*/
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CFM24VXX_IDs *_deviceID;
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/** Serial number
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*/
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CFM24VXX_SN *_sn;
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public:
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/** Memory storage mode
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*/
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enum Mode {
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LittleEndian, //<! Little Endian mode: 0xA0B70708 is stored as 08: MSB and A0 LSB
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BigEndian //<! Little Endian mode: 0xA0B70708 is stored as AO: MSB and 08 LSB
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};
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public:
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/** Constructor with Write Protect command pin wired. Use it to manage the first I2C module
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*
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* @param p_sda: MBed pin for SDA
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* @param p_scl: MBed pin for SCL
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* @param p_address: Device address input: A1, A2 (Pins <2,3>)
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* @param p_wp: MBed pin to manage Write Protect input. If NC, WP is not managed, default value is NC, not connected
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* @param p_frequency: Frequency of the I2C interface (SCL), default value is 400KHz
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* Example:
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* - If A1 pin is tired to Vdd and A2 is tired to Vss, address shall '00000001'B
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*/
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CFM24VXX_I2C(const PinName p_sda, const PinName p_scl, const unsigned char p_address, const PinName p_wp = NC, const unsigned int p_frequency = 400000);
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/** Destructor
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*/
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virtual ~CFM24VXX_I2C();
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/** Used to return the unique instance of I2C instance
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*/
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inline const I2C * operator * () { return (const I2C *)_i2cInstance; };
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/** Used to return the unique device identifier
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*/
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inline const CFM24VXX_IDs * GetDeviceID() { return (const CFM24VXX_IDs *)_deviceID; };
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/**
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* Used to return the serial number
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* Note This functionality is available only for the FM24VN10. In other case, it will return 0xff
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* @remark See FM24V10_ds.pdf Page 10/16 Clause Unique Serial Number (FM24VN10 only)
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*/
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inline const CFM24VXX_SN * GetSerialNumber() { return (const CFM24VXX_SN *)_sn; };
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/**
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* Used to swith high speed mode
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* @param highSpeedMode Set to true to switch to high speed mode
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* @remark See FM24V10_ds.pdf Page 4/16 Clause High Speed Mode (HS-mode)
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*/
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inline void SwitchSpeedMode(const bool highSpeedMode) { /* FIXME To be done */ };
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/**
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* Used to enter in sleep mode
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* @remark See FM24V10_ds.pdf Page 8/16 Clause Sleep Mode
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*/
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inline void EnterSleepMode() { /* FIXME To be done */ };
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/**
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* Used to leave sleep mode
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* @remark See FM24V10_ds.pdf Page 8/16 Clause Sleep Mode
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*/
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inline void LeaveSpeedMode() { /* FIXME To be done */ };
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/**
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* Used to select memory page
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* @param memoryPage The selected memory page (0 or 1)
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* @remark See FM24V10_ds.pdf Page 3/16 Clause Memory Architecture
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*/
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inline void SelectMemoryPage(const unsigned char memoryPage) { _slaveAddress |= ((memoryPage & 0x01) << 1); };
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/** Erase of memory area starting at the specified address, using the specified pattern to fill the memory area
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*
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* @param p_startAddress The address of the memory area (from 0 to N - 1, N is the number of cells of the memory)
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* @param p_count The size of the memory area to erase
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* @param p_pattern The pattern value to use to fill the memory area. Default vqlue: 0x00
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* @return true on success, false otherwise
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* Exemple:
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* @code
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* ...
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* myEEPROM.EraseMemoryArea(0, 1024); // Set to 0x00 the first 1Kb memory
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* ...
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* @endcode
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*/
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bool EraseMemoryArea(const short p_startAddress, const int p_count, const unsigned char p_pattern = 0x00);
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/** Write a byte at the specified memory address
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*
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* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
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* @param p_byte The byte value to save
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* @return true on success, false otherwise
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* Exemple:
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* @code
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* unsigned char value = 0xaa;
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* ...
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* myEEPROM.Write(memoryAddress, value);
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* ...
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* @endcode
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*/
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bool Write(const short p_address, const unsigned char p_byte);
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154
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/** Write a short at the specified memory address according to the specified mode
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*
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* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
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* @param p_short The short value to save
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* @param p_mode The storage mode. Default value: BigEndian
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* @return true on success, false otherwise
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* Exemple:
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* @code
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* short value = 0xcafe;
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* ...
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* myEEPROM.Write(memoryAddress, value, LittleEndian);
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* ...
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* @endcode
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*/
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bool Write(const short p_address, const short p_short, const CFM24VXX_I2C::Mode p_mode = BigEndian);
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/** Write an integer at the specified memory address according to the specified mode
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*
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* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
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* @param p_int The integer value to save
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* @param p_mode The storage mode. Default value: BigEndian
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* @return true on success, false otherwise
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* Exemple:
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* @code
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* int value = 0xcafedeca;
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* ...
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* myEEPROM.Write(memoryAddress, value, LittleEndian);
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* ...
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* @endcode
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*/
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bool Write(const short p_address, const int p_int, const CFM24VXX_I2C::Mode p_mode = BigEndian);
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/** Write a buffer of bytes at the specified memory address
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*
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* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
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* @param p_datas The string to save
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* @param p_storeLength If true, store also the length of the buffer in Big Endian mode, otherwise the length will be provided by p_length2write parameter. Default value: true.
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* @param p_length2write The number of bytes to write, -1 for all characters. Default value: -1
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* @return true on success, false otherwise
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*/
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bool Write(const short p_address, const std::vector<unsigned char> & p_datas, bool p_storeLength = true, const int p_length2write = -1);
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/** Write a buffer of bytes at the specified memory address
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*
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* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
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200
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* @param p_datas The buffer of bytes to save
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* @param p_storeLength If true, store also the length of the buffer in Big Endian mode, otherwise the length will be provided by p_length2write parameter. Default value: true.
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* @param p_length2write The number of bytes to write, -1 for all bytes. Default value: -1
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* @return true on success, false otherwise
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*/
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bool Write(const short p_address, const unsigned char *p_datas, bool p_storeLength = true, const int p_length2write = -1);
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206
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/** Write a string at the specified memory address
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*
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* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
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* @param p_string The string to save
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* @param p_storeLength If true, store also the length of the string in Big Endian mode, otherwise the length will be provided by p_length2write parameter. Default value: true.
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* @param p_length2write The number of character to write, -1 for all characters
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* @return true on success, false otherwise
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* Exemple:
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* @code
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* std::string text2save("CafeDeca");
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|
217
|
* ...
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* myEEPROM.Write(memoryAddress, text2save);
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219
|
* ...
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* @endcode
|
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0:fa858f79d48d
|
221
|
*/
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bool Write(const short p_address, const std::string & p_string, const bool p_storeLength = true, const int p_length2write = -1);
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|
223
|
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224
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/** Write a buffer of characters at the specified memory address (from 0 to N - 1, N is the number of cells of the memory)
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225
|
*
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226
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* Note that the length of the buffer is not saved and the string is saved in Big Endian mode
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* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
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* @param p_datas The string to save
|
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229
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* @param p_storeLength If true, store also the length of the string in Big Endian mode, otherwise the length will be provided by p_length2write parameter. Default value: true.
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* @param length2write The number of character to write, -1 for all characters
|
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231
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* @return true on success, false otherwise
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232
|
*/
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bool Write(const short p_address, const char *p_datas, const bool p_storeLength = true, const int p_length2write = -1);
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|
234
|
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|
235
|
/** Read a byte from the specified memory address
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|
236
|
*
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|
237
|
* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
|
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|
238
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* @param p_byte The byte value to read
|
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|
239
|
* @return true on success, false otherwise
|
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|
240
|
* Exemple:
|
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|
241
|
* @code
|
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|
242
|
* unsigned char value;
|
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0:fa858f79d48d
|
243
|
* ...
|
| Yann |
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|
244
|
* myEEPROM.Read(memoryAddress, (unsigned char *)&value);
|
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0:fa858f79d48d
|
245
|
* ...
|
| Yann |
0:fa858f79d48d
|
246
|
* @endcode
|
| Yann |
0:fa858f79d48d
|
247
|
*/
|
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0:fa858f79d48d
|
248
|
bool Read(const short p_address, unsigned char *p_value);
|
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0:fa858f79d48d
|
249
|
|
| Yann |
0:fa858f79d48d
|
250
|
/** Read a short from the specified memory address
|
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0:fa858f79d48d
|
251
|
*
|
| Yann |
0:fa858f79d48d
|
252
|
* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
|
| Yann |
0:fa858f79d48d
|
253
|
* @param p_short The short value to read
|
| Yann |
0:fa858f79d48d
|
254
|
* @return true on success, false otherwise
|
| Yann |
0:fa858f79d48d
|
255
|
* Exemple:
|
| Yann |
0:fa858f79d48d
|
256
|
* @code
|
| Yann |
0:fa858f79d48d
|
257
|
* short value;
|
| Yann |
0:fa858f79d48d
|
258
|
* ...
|
| Yann |
0:fa858f79d48d
|
259
|
* myEEPROM.Read(memoryAddress, (short *)&value);
|
| Yann |
0:fa858f79d48d
|
260
|
* ...
|
| Yann |
0:fa858f79d48d
|
261
|
* @endcode
|
| Yann |
0:fa858f79d48d
|
262
|
*/
|
| Yann |
0:fa858f79d48d
|
263
|
bool Read(const short p_address, short *p_short, CFM24VXX_I2C::Mode p_mode = BigEndian);
|
| Yann |
0:fa858f79d48d
|
264
|
|
| Yann |
0:fa858f79d48d
|
265
|
/** Read an integer from the specified memory address
|
| Yann |
0:fa858f79d48d
|
266
|
*
|
| Yann |
0:fa858f79d48d
|
267
|
* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
|
| Yann |
0:fa858f79d48d
|
268
|
* @param p_int The integer value to read
|
| Yann |
0:fa858f79d48d
|
269
|
* @return true on success, false otherwise
|
| Yann |
0:fa858f79d48d
|
270
|
* Exemple:
|
| Yann |
0:fa858f79d48d
|
271
|
* @code
|
| Yann |
0:fa858f79d48d
|
272
|
* int value;
|
| Yann |
0:fa858f79d48d
|
273
|
* ...
|
| Yann |
0:fa858f79d48d
|
274
|
* myEEPROM.Read(memoryAddress, (int *)&value);
|
| Yann |
0:fa858f79d48d
|
275
|
* ...
|
| Yann |
0:fa858f79d48d
|
276
|
* @endcode
|
| Yann |
0:fa858f79d48d
|
277
|
*/
|
| Yann |
0:fa858f79d48d
|
278
|
bool Read(const short p_address, int *p_int, CFM24VXX_I2C::Mode p_mode = BigEndian);
|
| Yann |
0:fa858f79d48d
|
279
|
|
| Yann |
0:fa858f79d48d
|
280
|
/** Read a buffer of bytes from the specified memory address and store it into a std::vector<unsigned char> object
|
| Yann |
0:fa858f79d48d
|
281
|
*
|
| Yann |
0:fa858f79d48d
|
282
|
* Note that the size of the buffer object is used for the number of bytes to read
|
| Yann |
0:fa858f79d48d
|
283
|
* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
|
| Yann |
0:fa858f79d48d
|
284
|
* @param p_datas The buffer to fill
|
| Yann |
0:fa858f79d48d
|
285
|
* @param p_readLengthFirst If true, read the length first and p_length2write parameter is ignored, otherwise the length is provided by p_length2write parameter. Default value: true
|
| Yann |
0:fa858f79d48d
|
286
|
* @param p_length2read The number of character to write, -1 to use the size of the string buffer
|
| Yann |
0:fa858f79d48d
|
287
|
* @return true on success, false otherwise
|
| Yann |
0:fa858f79d48d
|
288
|
* Exemple:
|
| Yann |
0:fa858f79d48d
|
289
|
* @code
|
| Yann |
0:fa858f79d48d
|
290
|
* std::vector<unsigned char> datas(bufferLength);
|
| Yann |
0:fa858f79d48d
|
291
|
* ...
|
| Yann |
0:fa858f79d48d
|
292
|
* myEEPROM.Read(memoryAddress, datas);
|
| Yann |
0:fa858f79d48d
|
293
|
* ...
|
| Yann |
0:fa858f79d48d
|
294
|
* @endcode
|
| Yann |
0:fa858f79d48d
|
295
|
*/
|
| Yann |
0:fa858f79d48d
|
296
|
bool Read(const short p_address, std::vector<unsigned char> & p_datas, bool p_readLengthFirst = true, int p_length2read = -1);
|
| Yann |
0:fa858f79d48d
|
297
|
|
| Yann |
0:fa858f79d48d
|
298
|
/** Read a buffer of characters from the specified memory address and store it into a string object
|
| Yann |
0:fa858f79d48d
|
299
|
*
|
| Yann |
0:fa858f79d48d
|
300
|
* Note that the size of the string object is used for the number of characters to read
|
| Yann |
0:fa858f79d48d
|
301
|
* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
|
| Yann |
0:fa858f79d48d
|
302
|
* @param p_string The string buffer to fill
|
| Yann |
0:fa858f79d48d
|
303
|
* @param p_readLengthFirst If true, read the length first and p_length2write parameter is ignored, otherwise the length is provided by p_length2write parameter. Default value: true
|
| Yann |
0:fa858f79d48d
|
304
|
* @param p_length2write The number of character to write, -1 to use the size of the string buffer
|
| Yann |
0:fa858f79d48d
|
305
|
* @return true on success, false otherwise
|
| Yann |
0:fa858f79d48d
|
306
|
* Exemple:
|
| Yann |
0:fa858f79d48d
|
307
|
* @code
|
| Yann |
0:fa858f79d48d
|
308
|
* std::string readtext;
|
| Yann |
0:fa858f79d48d
|
309
|
* ...
|
| Yann |
0:fa858f79d48d
|
310
|
* myEEPROM.Read(memoryAddress, readtext);
|
| Yann |
0:fa858f79d48d
|
311
|
* ...
|
| Yann |
0:fa858f79d48d
|
312
|
* @endcode
|
| Yann |
0:fa858f79d48d
|
313
|
*/
|
| Yann |
0:fa858f79d48d
|
314
|
bool Read(const short p_address, std::string & p_string, bool p_readLengthFirst = true, int p_length2write = -1);
|
| Yann |
0:fa858f79d48d
|
315
|
|
| Yann |
0:fa858f79d48d
|
316
|
/** Activate or deactivate write protect (pin 7)
|
| Yann |
0:fa858f79d48d
|
317
|
*
|
| Yann |
0:fa858f79d48d
|
318
|
* @param p_writeProtect: Set to true to activate write protection, false otherwise
|
| Yann |
0:fa858f79d48d
|
319
|
* @return true on success, false otherwise
|
| Yann |
0:fa858f79d48d
|
320
|
*/
|
| Yann |
0:fa858f79d48d
|
321
|
bool WriteProtect(const bool p_writeProtect);
|
| Yann |
0:fa858f79d48d
|
322
|
|
| Yann |
0:fa858f79d48d
|
323
|
/** Indicate the current WP state indicator (pin 7)
|
| Yann |
0:fa858f79d48d
|
324
|
* @return true is write protected, false otherwise
|
| Yann |
0:fa858f79d48d
|
325
|
*/
|
| Yann |
0:fa858f79d48d
|
326
|
inline bool IsWriteProtected() {
|
| Yann |
0:fa858f79d48d
|
327
|
return (_wp != NULL) ? (bool)(_wp->read() == 1) : false;
|
| Yann |
0:fa858f79d48d
|
328
|
}
|
| Yann |
0:fa858f79d48d
|
329
|
|
| Yann |
0:fa858f79d48d
|
330
|
#if defined(__DEBUG)
|
| Yann |
0:fa858f79d48d
|
331
|
/** Dump a memory area
|
| Yann |
0:fa858f79d48d
|
332
|
*
|
| Yann |
0:fa858f79d48d
|
333
|
* Note that this method is available only on debug mode
|
| Yann |
0:fa858f79d48d
|
334
|
* @param p_address The memory address (from 0 to N - 1, N is the number of cells of the memory)
|
| Yann |
0:fa858f79d48d
|
335
|
* @param p_count The number of bytes toi dump
|
| Yann |
0:fa858f79d48d
|
336
|
* @return true on success, false otherwise
|
| Yann |
0:fa858f79d48d
|
337
|
*/
|
| Yann |
0:fa858f79d48d
|
338
|
void DumpMemoryArea(const int p_address, const int p_count);
|
| Yann |
0:fa858f79d48d
|
339
|
/** For debug purpose only
|
| Yann |
0:fa858f79d48d
|
340
|
*/
|
| Yann |
0:fa858f79d48d
|
341
|
inline std::string & ToString() { return _internalId; };
|
| Yann |
0:fa858f79d48d
|
342
|
#else // __DEBUG
|
| Yann |
0:fa858f79d48d
|
343
|
inline void DumpMemoryArea(const int p_address, const int p_count) {};
|
| Yann |
0:fa858f79d48d
|
344
|
#endif // _DEBUG
|
| Yann |
0:fa858f79d48d
|
345
|
|
| Yann |
0:fa858f79d48d
|
346
|
private:
|
| Yann |
0:fa858f79d48d
|
347
|
/** Internal reference identifier
|
| Yann |
0:fa858f79d48d
|
348
|
*/
|
| Yann |
0:fa858f79d48d
|
349
|
std::string _internalId;
|
| Yann |
0:fa858f79d48d
|
350
|
|
| Yann |
0:fa858f79d48d
|
351
|
private:
|
| Yann |
1:6a16bddd7222
|
352
|
|
| Yann |
1:6a16bddd7222
|
353
|
/** Retrieve device identifiers
|
| Yann |
0:fa858f79d48d
|
354
|
* @remark See FM24V10_ds.pdf Page 9/16 Clause Device ID
|
| Yann |
0:fa858f79d48d
|
355
|
*/
|
| Yann |
1:6a16bddd7222
|
356
|
bool GetDevideIDs();
|
| Yann |
0:fa858f79d48d
|
357
|
|
| Yann |
1:6a16bddd7222
|
358
|
/**
|
| Yann |
1:6a16bddd7222
|
359
|
* Used to return the serial number
|
| Yann |
1:6a16bddd7222
|
360
|
* Note This functionality is available only for the FM24VN10. In other case, it will return 0xff
|
| Yann |
1:6a16bddd7222
|
361
|
* @remark See FM24V10_ds.pdf Page 10/16 Clause Unique Serial Number (FM24VN10 only)
|
| Yann |
1:6a16bddd7222
|
362
|
*/
|
| Yann |
1:6a16bddd7222
|
363
|
bool GetSerialNumbers();
|
| Yann |
1:6a16bddd7222
|
364
|
|
| Yann |
1:6a16bddd7222
|
365
|
/**
|
| Yann |
1:6a16bddd7222
|
366
|
* Function to Calculate CRC
|
| Yann |
1:6a16bddd7222
|
367
|
* @param pdatas The read Serial Number
|
| Yann |
1:6a16bddd7222
|
368
|
* @param length The number of bytes in the pdatas array. Default: 7 bytes length
|
| Yann |
1:6a16bddd7222
|
369
|
* @return The 8-bits length checksum
|
| Yann |
1:6a16bddd7222
|
370
|
* @see See FM24V10_ds.pdf Page 10/16 Clause Unique Serial Number (FM24VN10 only)
|
| Yann |
1:6a16bddd7222
|
371
|
*/
|
| Yann |
1:6a16bddd7222
|
372
|
unsigned char ChecksumSN(const unsigned char *pdatas, const unsigned int length = 7);
|
| Yann |
1:6a16bddd7222
|
373
|
|
| Yann |
0:fa858f79d48d
|
374
|
}; // End of class CFM24VXX_I2C
|
| Yann |
0:fa858f79d48d
|
375
|
|
| Yann |
0:fa858f79d48d
|
376
|
}; // End of namespace _FM24VXX_I2C
|
| Yann |
0:fa858f79d48d
|
377
|
|
| Yann |
0:fa858f79d48d
|
378
|
using namespace _FM24VXX_I2C;
|
| Yann |
0:fa858f79d48d
|
379
|
|
| Yann |
0:fa858f79d48d
|
380
|
#endif // __FM24VXX_I2C_H__
|
Yann Garcia
Ramtron FM24Vxx F-RAM