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Nathan Seidle
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Working EEPROM for Artemis
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‎libraries/EEPROM/examples/Apollo_EEPROM/Apollo_EEPROM.ino‎

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/*
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Reading and writing test of the EEPROM functions on the Artemis
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By: Nathan Seidle
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SparkFun Electronics
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Date: June 24th, 2019
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This example code is in the public domain.
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SparkFun labored with love to create this code. Feel like supporting open source hardware?
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Buy a board from SparkFun! https://www.sparkfun.com/products/15376
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Page erase takes 15ms
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Write byte takes 30ms - This is much longer than Arduino that takes 3.3ms
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Float write across two words takes 30ms
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Update (no write) takes 1ms
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*/
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#include <EEPROM.h>
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void setup()
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{
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Serial.begin(9600);
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Serial.println("EEPROM Examples");
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randomSeed(analogRead(A0));
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long startTime;
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long endTime;
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uint16_t randomLocation;
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//Test erase time
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startTime = millis();
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EEPROM.erase();
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endTime = millis();
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Serial.printf("Time to erase all EEPROM: %dms\n", endTime - startTime);
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//Byte sequential test
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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Serial.println("");
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Serial.println("8 bit tests");
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byte myValue1 = 200;
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byte myValue2 = 23;
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randomLocation = random(0, FLASH_EEPROM_SIZE);
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startTime = millis();
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EEPROM.write(randomLocation, myValue1); //(location, data)
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endTime = millis();
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EEPROM.put(randomLocation + 1, myValue2);
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Serial.printf("Write byte time: %dms\n", endTime - startTime);
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byte response1 = EEPROM.read(randomLocation);
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byte response2 = EEPROM.read(randomLocation + 1);
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Serial.printf("Location %d should be %d: %d\n\r", randomLocation, myValue1, response1);
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Serial.printf("Location %d should be %d: %d\n\r", randomLocation + 1, myValue2, response2);
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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Serial.println("");
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Serial.println("16 bit tests");
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//int16_t and uint16_t sequential test
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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uint16_t myValue3 = 3411;
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int16_t myValue4 = -366;
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randomLocation = random(0, FLASH_EEPROM_SIZE);
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EEPROM.put(randomLocation, myValue3);
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EEPROM.put(randomLocation + 2, myValue4);
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uint16_t response3;
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int16_t response4;
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EEPROM.get(randomLocation, response3);
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EEPROM.get(randomLocation + 2, response4);
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Serial.printf("Location %d should be %d: %d\n\r", randomLocation, myValue3, response3);
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Serial.printf("Location %d should be %d: %d\n\r", randomLocation + 2, myValue4, response4);
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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Serial.println("");
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Serial.println("32 bit tests");
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//int and unsigned int (32) sequential test
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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Serial.printf("Size of int: %d\n", sizeof(int));
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int myValue5 = -245000;
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unsigned int myValue6 = 400123;
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randomLocation = random(0, FLASH_EEPROM_SIZE);
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EEPROM.put(randomLocation, myValue5);
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EEPROM.put(randomLocation + 4, myValue6);
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int response5;
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unsigned int response6;
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EEPROM.get(randomLocation, response5);
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EEPROM.get(randomLocation + 4, response6);
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Serial.printf("Location %d should be %d: %d\n\r", randomLocation, myValue5, response5);
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Serial.printf("Location %d should be %d: %d\n\r", randomLocation + 4, myValue6, response6);
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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//int32_t and uint32_t sequential test
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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int32_t myValue7 = -341002;
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uint32_t myValue8 = 241544;
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randomLocation = random(0, FLASH_EEPROM_SIZE);
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EEPROM.update(randomLocation, myValue7);
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EEPROM.update(randomLocation + 4, myValue8);
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int32_t response7;
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uint32_t response8;
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EEPROM.get(randomLocation, response7);
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EEPROM.get(randomLocation + 4, response8);
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Serial.printf("Location %d should be %d: %d\n\r", randomLocation, myValue7, response7);
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Serial.printf("Location %d should be %d: %d\n\r", randomLocation + 4, myValue8, response8);
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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//float (32) sequential test
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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Serial.printf("Size of float: %d\n", sizeof(float));
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float myValue9 = -7.35;
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float myValue10 = 5.22;
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randomLocation = random(0, FLASH_EEPROM_SIZE);
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EEPROM.update(randomLocation, myValue9);
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EEPROM.update(randomLocation + 4, myValue10);
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float response9;
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float response10;
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EEPROM.get(randomLocation, response9);
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EEPROM.get(randomLocation + 4, response10);
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Serial.printf("Location %d should be %f: %f\n\r", randomLocation, myValue9, response9);
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Serial.printf("Location %d should be %f: %f\n\r", randomLocation + 4, myValue10, response10);
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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Serial.println("");
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Serial.println("64 bit tests");
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//double (64) sequential test
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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Serial.printf("Size of double: %d\n", sizeof(double));
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double myValue11 = -290.3485723409857;
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double myValue12 = 384.95734987;
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randomLocation = random(0, FLASH_EEPROM_SIZE);
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EEPROM.update(randomLocation, myValue11);
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EEPROM.update(randomLocation + 8, myValue12);
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double response11;
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double response12;
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EEPROM.get(randomLocation, response11);
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EEPROM.get(randomLocation + 8, response12);
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Serial.printf("Location %d should be %lf: %lf\n", randomLocation, myValue11, response11);
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Serial.printf("Location %d should be %lf: %lf\n", randomLocation + 8, myValue12, response12);
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//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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Serial.println();
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Serial.print("Flash Contents:");
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for (uint16_t x = 0; x < 8 * 4; x += 4)
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{
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if (x % 32 == 0)
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Serial.println();
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Serial.printf("0x%08X ", *(uint32_t *)(FLASH_EEPROM_START + x));
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}
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Serial.println();
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}
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void loop()
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{
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}

‎libraries/EEPROM/keywords.txt‎

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#######################################
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# Syntax Coloring Map
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#######################################
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#######################################
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# Datatypes (KEYWORD1)
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#######################################
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EEPROM KEYWORD1
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#######################################
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# Methods and Functions (KEYWORD2)
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#######################################
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read KEYWORD2
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write KEYWORD2
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get KEYWORD2
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put KEYWORD2
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update KEYWORD2
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erase KEYWORD2
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#######################################
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# Constants (LITERAL1)
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#######################################

‎libraries/EEPROM/library.properties‎

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name=EEPROM
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version=1.0
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author=SparkFun Electronics
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maintainer=SparkFun Electronics <sparkfun.com>
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sentence=Flash based Pseudo EEPROM for Artemis
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paragraph=Enables the writing of variables to a protected section of flash. These bytes will not be overwritten when new sketches are loaded and are useful when needing to record settings like calibration data or GPS waypoints that should not change between sketch updates.
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category=Communication
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url=http://www.arduino.cc/en/Reference/EEPROM
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architectures=apollo3

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