mirror of
https://github.com/RobTillaart/Arduino.git
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142 lines
3.9 KiB
C++
142 lines
3.9 KiB
C++
#pragma once
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//
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// FILE: FRAM.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.4.0
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// DATE: 2018-01-24
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// PURPOSE: Arduino library for I2C FRAM
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// URL: https://github.com/RobTillaart/FRAM_I2C
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//
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#include "Arduino.h"
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#include "Wire.h"
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#define FRAM_LIB_VERSION (F("0.4.0"))
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#define FRAM_OK 0
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#define FRAM_ERROR_ADDR -10
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#define FRAM_ERROR_I2C -11
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#define FRAM_ERROR_CONNECT -12
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// Size known types
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#define FRAM_MB85RC04 512
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#define FRAM_MB85RC16 2048
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#define FRAM_MB85RC64T 8192
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#define FRAM_MB85RC128A 16384
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#define FRAM_MB85RC256V 32768
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#define FRAM_MB85RC512T 65536
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#define FRAM_MB85RC1MT 131072
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class FRAM
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{
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public:
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FRAM(TwoWire *wire = &Wire);
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#if defined (ESP8266) || defined(ESP32)
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// address and writeProtectPin is optional
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int begin(uint8_t sda, uint8_t scl, const uint8_t address = 0x50, int8_t writeProtectPin = -1);
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#endif
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// address and writeProtectPin is optional
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int begin(const uint8_t address = 0x50, int8_t writeProtectPin = -1);
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bool isConnected();
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void write8(uint16_t memaddr, uint8_t value);
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void write16(uint16_t memaddr, uint16_t value);
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void write32(uint16_t memaddr, uint32_t value);
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void write(uint16_t memaddr, uint8_t * obj, uint16_t size);
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uint8_t read8(uint16_t memaddr);
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uint16_t read16(uint16_t memaddr);
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uint32_t read32(uint16_t memaddr);
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void read(uint16_t memaddr, uint8_t * obj, uint16_t size);
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template <class T> uint16_t writeObject(uint16_t memaddr, T &obj)
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{
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write(memaddr, (uint8_t *) &obj, sizeof(obj));
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return memaddr + sizeof(obj);
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};
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template <class T> uint16_t readObject(uint16_t memaddr, T &obj)
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{
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read(memaddr, (uint8_t *) &obj, sizeof(obj));
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return memaddr + sizeof(obj);
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}
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// works only if pin is defined in begin.
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bool setWriteProtect(bool b);
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bool getWriteProtect();
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// meta info
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uint16_t getManufacturerID(); // Fujitsu = 0x000A
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uint16_t getProductID(); // Proprietary
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uint16_t getSize(); // Returns size in KILO-BYTE (or 0)
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uint32_t getSizeBytes() { return _sizeBytes; }; // Returns size in BYTE
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void setSizeBytes(uint32_t value); // override when getSize() fails == 0
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uint32_t clear(uint8_t value = 0); // fills FRAM with value
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// 0.3.6
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void sleep();
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bool wakeup(uint32_t trec = 400); // trec <= 400us P12
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protected:
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uint8_t _address;
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uint32_t _sizeBytes;
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// default no pin = -1 ==> no write protect.
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int8_t _writeProtectPin = -1;
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TwoWire* _wire;
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uint16_t _getMetaData(uint8_t id);
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void _writeBlock(uint16_t memaddr, uint8_t * obj, uint8_t size);
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void _readBlock(uint16_t memaddr, uint8_t * obj, uint8_t size);
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};
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/////////////////////////////////////////////////////////////////
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//
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// FRAM32
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//
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class FRAM32 : public FRAM
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{
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public:
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FRAM32(TwoWire *wire = &Wire);
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void write8(uint32_t memaddr, uint8_t value);
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void write16(uint32_t memaddr, uint16_t value);
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void write32(uint32_t memaddr, uint32_t value);
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void write(uint32_t memaddr, uint8_t * obj, uint16_t size);
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uint8_t read8(uint32_t memaddr);
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uint16_t read16(uint32_t memaddr);
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uint32_t read32(uint32_t memaddr);
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void read(uint32_t memaddr, uint8_t * obj, uint16_t size);
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template <class T> uint32_t writeObject(uint32_t memaddr, T &obj)
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{
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write(memaddr, (uint8_t *) &obj, sizeof(obj));
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return memaddr + sizeof(obj);
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};
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template <class T> uint32_t readObject(uint32_t memaddr, T &obj)
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{
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read(memaddr, (uint8_t *) &obj, sizeof(obj));
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return memaddr + sizeof(obj);
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}
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uint32_t clear(uint8_t value = 0); // fills FRAM with value
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protected:
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void _writeBlock(uint32_t memaddr, uint8_t * obj, uint8_t size);
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void _readBlock(uint32_t memaddr, uint8_t * obj, uint8_t size);
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};
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// -- END OF FILE --
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