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0.8.2 FRAM_I2C
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‎libraries/FRAM_I2C/CHANGELOG.md‎

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@@ -5,6 +5,12 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
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and this project adheres to [Semantic Versioning](http://semver.org/).
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## [0.8.2] - 2025-02-03
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- support AVR_ATtiny85 / 84, kudos to GiorgosXou
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- add **FRAM_ATTINY85_COMPILE_TEST.ino** for testing
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- update readme.md with ATTINY section
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- improve FRAM32_Performance.ino RAM usage with F()
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## [0.8.1] - 2024-07-19
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- Fix #56, performance sketch
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- minor edits

‎libraries/FRAM_I2C/FRAM.cpp‎

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//
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// FILE: FRAM.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.8.1
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// VERSION: 0.8.2
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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

‎libraries/FRAM_I2C/FRAM.h‎

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//
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// FILE: FRAM.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.8.1
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// VERSION: 0.8.2
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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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#include "Arduino.h"
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#include "Wire.h"
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#define FRAM_LIB_VERSION (F("0.8.1"))
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#if (defined(ARDUINO_attiny) || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny85__)) && !defined(TwoWire_h)
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#include "TinyWireM.h"
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#define Wire TinyWireM
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#define TwoWire USI_TWI
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#pragma message(" [WARNING] Defaulting to 'TinyWireM.h'. 'Wire' is defined as 'TinyWireM', and 'TwoWire' as 'USI_TWI'.")
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#pragma message(" [WARNING] To override or fall back, include 'Wire.h' above the library.")
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#else
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#include "Wire.h"
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#endif
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#define FRAM_LIB_VERSION (F("0.8.2"))
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#define FRAM_OK 0

‎libraries/FRAM_I2C/LICENSE‎

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MIT License
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Copyright (c) 2018-2024 Rob Tillaart
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Copyright (c) 2018-2025 Rob Tillaart
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal

‎libraries/FRAM_I2C/README.md‎

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too with adjacent addresses.
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### ATTINY (experimental)
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- https://github.com/RobTillaart/FRAM_I2C/pull/58
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Since 0.8.2 there is **experimental** support of the ATtiny85 device.
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With the FRAM the (persistent) storage of an ATtiny increases a lot.
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The library is not tested by me with ATtiny hardware, however compilation
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is confirmed to work with IDE 1.8.19 (FRAM_ATTINY85_COMPILE_TEST.ino only)
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NOTE: the examples of the library won't work with an ATtiny85 as they are
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written for the **Wire.h** where ATtiny uses **TinyWireM.h**.
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They can however be used as a guide how to call the library functions.
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The code is expected to work with other ATTINY devices too.
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If you encounter problems or success, please open an issue on GitHub.
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### Related
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- https://github.com/RobTillaart/I2C_EEPROM (eeprom)

‎libraries/FRAM_I2C/examples/FRAM32_Performance/FRAM32_Performance.ino‎

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{
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Serial.begin(115200);
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Serial.println(__FILE__);
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Serial.print("FRAM_LIB_VERSION: ");
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Serial.print(F("FRAM_LIB_VERSION: "));
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Serial.println(FRAM_LIB_VERSION);
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Serial.println();
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Serial.println();
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for (int s = 1; s < 9; s++) // test up to 800 KB
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{
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uint32_t speed = s * 100000UL;
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Serial.print("CLOCK: ");
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Serial.print(F("CLOCK: "));
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Serial.println(speed);
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Wire.setClock(speed);
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testReadWriteLarge();
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start = micros();
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fram.write(1000, (uint8_t*)ar, 1200);
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stop = micros();
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Serial.print("WRITE 1200 bytes TIME: \t");
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Serial.print(F("WRITE 1200 bytes TIME: \t"));
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Serial.print(stop - start);
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Serial.print(" us ==> \t");
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Serial.print(F(" us ==> \t"));
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Serial.print((stop - start) / 1200.0, 2);
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Serial.println(" us/byte.");
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Serial.println(F(" us/byte."));
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delay(100);
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for (int i = 0; i < 600; i++) ar[i] = 0;
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start = micros();
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fram.read(1000, (uint8_t*)ar, 1200);
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stop = micros();
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Serial.print("READ 1200 bytes TIME: \t");
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Serial.print(F("READ 1200 bytes TIME: \t"));
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Serial.print(stop - start);
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Serial.print(" us ==> \t");
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Serial.print(F(" us ==> \t"));
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Serial.print((stop - start) / 1200.0, 2);
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Serial.println(" us/byte.");
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Serial.println(F(" us/byte."));
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delay(100);
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for (int i = 0; i < 600; i++)
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{
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if (ar[i] != i)
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{
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Serial.print("FAIL: \t");
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Serial.print(F("FAIL: \t"));
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Serial.print(ar[i]);
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Serial.print('\t');
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Serial.println(i);

‎libraries/FRAM_I2C/examples/FRAM_ATTINY85_COMPILE_TEST/.arduino-ci.yml‎

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platforms:
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rpipico:
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board: rp2040:rp2040:rpipico
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package: rp2040:rp2040
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gcc:
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features:
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defines:
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- ARDUINO_ARCH_RP2040
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warnings:
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flags:
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packages:
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rp2040:rp2040:
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url: https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
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compile:
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# Choosing to run compilation tests on 2 different Arduino platforms
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platforms:
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# - uno
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# - due
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# - zero
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# - leonardo
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# - m4
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# - esp32
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# - esp8266
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# - mega2560
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# - rpipico
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# - nano_every
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‎libraries/FRAM_I2C/examples/FRAM_ATTINY85_COMPILE_TEST/FRAM_ATTINY85_COMPILE_TEST.ino‎

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//
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// FILE: FRAM_ATTINY85_COMPILE_TEST.ino
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// AUTHOR: Rob Tillaart
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// PURPOSE: compile test for FRAM library with ATTINY85
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// URL: https://github.com/RobTillaart/FRAM_I2C
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//
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//
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// WARNING: not tested with hardware, only compilation.
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// this example is for checking if there are compile errors.
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// TESTED: IDE: 1.8.19 ATTINY85
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//
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#include "TinyWireM.h"
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#include "FRAM.h"
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FRAM fram;
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uint32_t start;
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uint32_t stop;
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void setup()
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{
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TinyWireM.begin();
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fram.begin(0x50);
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testID();
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testFRAMmemory();
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testReadWriteSmall();
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testReadWriteLarge();
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// testWriteText();
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// testReadText1();
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// testReadText2();
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}
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void loop()
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{
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}
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void testID()
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{
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int x = fram.getManufacturerID();
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int y = fram.getProductID();
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int s = fram.getSize();
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}
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void testFRAMmemory()
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{
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start = millis();
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uint8_t val = 0x55;
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for (uint16_t addr = 0; addr < 32768; addr++)
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{
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fram.write8(addr, val);
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if (fram.read8(addr) != 0x55)
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{
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}
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if (addr % 1000 == 0)
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{
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}
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}
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stop = millis();
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}
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void testReadWriteSmall()
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{
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uint8_t t8 = 0xFE;
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fram.write8(1000, t8);
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if (fram.read8(1000) != 0xFE)
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{
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}
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else
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{
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}
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uint16_t t16 = 0xFADE;
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fram.write16(1000, t16);
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if (fram.read16(1000) != 0xFADE)
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{
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}
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else
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{
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}
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uint32_t t32 = 0xFADEFACE;
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fram.write32(1000, t32);
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if (fram.read32(1000) != 0xFADEFACE)
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{
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}
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else
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{
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}
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}
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void testReadWriteLarge()
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{
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uint8_t ar[20];
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for (int i = 0; i < 20; i++) ar[i] = i;
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start = millis();
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fram.write(1000, ar, 20);
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stop = millis();
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for (int i = 0; i < 20; i++) ar[i] = 0;
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start = millis();
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fram.read(1000, ar, 20);
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stop = millis();
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for (int i = 0; i < 20; i++)
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{
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if (ar[i] != i)
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{
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}
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}
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}
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void testWriteText()
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{
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char str[5][16] =
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{
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"Hello world 0",
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"Hello world 1",
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"Hello world 2",
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"Hello world 3",
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"Hello world 4",
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};
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start = millis();
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fram.write(2000, (uint8_t *)str, 80);
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stop = millis();
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}
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void testReadText1()
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{
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char str[5][16];
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start = millis();
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fram.read(2000, (uint8_t *)str, 80);
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stop = millis();
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for (int i = 0; i < 5; i++)
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{
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}
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}
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void testReadText2()
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{
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char str[16];
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for (int i = 0; i < 5; i++)
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{
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fram.read(2000 + 16 * i, (uint8_t *)str, 16);
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}
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}
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// -- END OF FILE --

‎libraries/FRAM_I2C/library.json‎

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"type": "git",
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"url": "https://github.com/RobTillaart/FRAM_I2C.git"
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},
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"version": "0.8.1",
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"version": "0.8.2",
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"license": "MIT",
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"frameworks": "*",
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"platforms": "*",

‎libraries/FRAM_I2C/library.properties‎

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name=FRAM_I2C
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version=0.8.1
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version=0.8.2
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author=Rob Tillaart <[email protected]>
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maintainer=Rob Tillaart <[email protected]>
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sentence=Arduino library for I2C FRAM for persistent storage.

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