#pragma once // // FILE: FRAM.h // AUTHOR: Rob Tillaart // VERSION: 0.7.0 // DATE: 2018-01-24 // PURPOSE: Arduino library for I2C FRAM // URL: https://github.com/RobTillaart/FRAM_I2C #include "Arduino.h" #include "Wire.h" #define FRAM_LIB_VERSION (F("0.7.0")) #define FRAM_OK 0 #define FRAM_ERROR_ADDR -10 #define FRAM_ERROR_I2C -11 #define FRAM_ERROR_CONNECT -12 // Size known types (Fujitsu) #define FRAM_MB85RC04 512 #define FRAM_MB85RC16 2048 #define FRAM_MB85RC64T 8192 #define FRAM_MB85RC64V 8192 #define FRAM_MB85RC128A 16384 #define FRAM_MB85RC256V 32768 #define FRAM_MB85RC512T 65536 #define FRAM_MB85RC1MT 131072 class FRAM { public: FRAM(TwoWire *wire = &Wire); // address and writeProtectPin is optional // user has to call Wire.begin() before FRAM.begin(). int begin(const uint8_t address = 0x50, const int8_t writeProtectPin = -1); bool isConnected(); // WRITE DATA TYPES void write8(uint16_t memAddr, uint8_t value); void write16(uint16_t memAddr, uint16_t value); void write32(uint16_t memAddr, uint32_t value); void write64(uint16_t memAddr, uint64_t value); void writeFloat(uint16_t memAddr, float value); void writeDouble(uint16_t memAddr, double value); void write(uint16_t memAddr, uint8_t * obj, uint16_t size); // fills FRAM with value, default 0. uint32_t clear(uint8_t value = 0); // READ DATA TYPES uint8_t read8(uint16_t memAddr); uint16_t read16(uint16_t memAddr); uint32_t read32(uint16_t memAddr); uint64_t read64(uint16_t memAddr); float readFloat(uint16_t memAddr); double readDouble(uint16_t memAddr); void read(uint16_t memAddr, uint8_t * obj, uint16_t size); // Experimental 0.5.1 // readUntil returns length 0.. n of the buffer. // readUntil does NOT include the separator character. // readUntil returns -1 if data does not fit into buffer, // => separator not encountered. int32_t readUntil(uint16_t memAddr, char * buffer, uint16_t bufferLength, char separator); // readLine returns length 0.. n of the buffer. // readLine does include '\n' as end character. // readLine returns -1 if data does not fit into buffer. // buffer needs one place for end char '\0'. int32_t readLine(uint16_t memAddr, char * buffer, uint16_t bufferLength); // template function must be in .h file template uint16_t writeObject(uint16_t memAddr, T &obj) { write(memAddr, (uint8_t *) &obj, sizeof(obj)); return memAddr + sizeof(obj); }; template uint16_t readObject(uint16_t memAddr, T &obj) { read(memAddr, (uint8_t *) &obj, sizeof(obj)); return memAddr + sizeof(obj); } // WRITEPROTECT // works only if pin is defined in begin(). bool setWriteProtect(bool b); bool getWriteProtect(); // MEAT INFO // may not work for devices with no deviceID register. // Fujitsu = 0x000A, Ramtron = 0x004 uint16_t getManufacturerID(); // Proprietary product ID uint16_t getProductID(); // virtual so derived classes FRAM9/11 use their implementation. // Returns size in KILO-BYTE (or 0) // Verify for all manufacturers. virtual uint16_t getSize(); // Returns size in BYTE uint32_t getSizeBytes(); // override when getSize() fails == 0 (see readme.md) void setSizeBytes(uint32_t value); // SLEEP - 0.3.6 void sleep(); // timeRecover <= 400us see trec P12 bool wakeup(uint32_t timeRecover = 400); protected: uint8_t _address; uint32_t _sizeBytes; // default no pin = -1 ==> no write protect. int8_t _writeProtectPin = -1; TwoWire* _wire; uint32_t _getMetaData(); // virtual so derived classes FRAM9/11 use their implementation. virtual void _writeBlock(uint16_t memAddr, uint8_t * obj, uint8_t size); virtual void _readBlock(uint16_t memAddr, uint8_t * obj, uint8_t size); }; ///////////////////////////////////////////////////////////////////////////// // // FRAM32 // class FRAM32 : public FRAM { public: FRAM32(TwoWire *wire = &Wire); void write8(uint32_t memAddr, uint8_t value); void write16(uint32_t memAddr, uint16_t value); void write32(uint32_t memAddr, uint32_t value); void write64(uint32_t memAddr, uint64_t value); void writeFloat(uint32_t memAddr, float value); void writeDouble(uint32_t memAddr, double value); void write(uint32_t memAddr, uint8_t * obj, uint16_t size); uint8_t read8(uint32_t memAddr); uint16_t read16(uint32_t memAddr); uint32_t read32(uint32_t memAddr); uint64_t read64(uint32_t memAddr); float readFloat(uint32_t memAddr); double readDouble(uint32_t memAddr); void read(uint32_t memAddr, uint8_t * obj, uint16_t size); // readUntil returns length 0.. n of the buffer. // readUntil returns -1 if data does not fit into buffer, // => separator not encountered. int32_t readUntil(uint32_t memAddr, char * buffer, uint16_t bufferLength, char separator); // buffer needs one place for end char '\0'. int32_t readLine(uint32_t memAddr, char * buffer, uint16_t bufferLength); // template function must be in .h file template uint32_t writeObject(uint32_t memAddr, T &obj) { write(memAddr, (uint8_t *) &obj, sizeof(obj)); return memAddr + sizeof(obj); }; template uint32_t readObject(uint32_t memAddr, T &obj) { read(memAddr, (uint8_t *) &obj, sizeof(obj)); return memAddr + sizeof(obj); } uint32_t clear(uint8_t value = 0); // fills FRAM with value protected: void _writeBlock(uint32_t memAddr, uint8_t * obj, uint8_t size); void _readBlock(uint32_t memAddr, uint8_t * obj, uint8_t size); }; ///////////////////////////////////////////////////////////////////////////// // // FRAM11 for FRAM that use 11 bits addresses - e.g. MB85RC16 // class FRAM11 : public FRAM { public: FRAM11(TwoWire *wire = &Wire); // address and writeProtectPin is optional int begin(const uint8_t address = 0x50, const int8_t writeProtectPin = -1); uint16_t getSize(); protected: void _writeBlock(uint16_t memAddr, uint8_t * obj, uint8_t size); void _readBlock(uint16_t memAddr, uint8_t * obj, uint8_t size); }; ///////////////////////////////////////////////////////////////////////////// // // FRAM9 for FRAM that use 9 bits addresses - e.g. MB85RC04 // class FRAM9 : public FRAM { public: FRAM9(TwoWire *wire = &Wire); // address and writeProtectPin is optional int begin(const uint8_t address = 0x50, const int8_t writeProtectPin = -1); uint16_t getSize(); protected: void _writeBlock(uint16_t memAddr, uint8_t * obj, uint8_t size); void _readBlock(uint16_t memAddr, uint8_t * obj, uint8_t size); }; // -- END OF FILE --