EEPROM.put and get does not work

[loathingKernel]

From @elik745i on March 24, 2017 15:46

EEPROM.put and get requests does not work with newEEPROM library, can anyone fix it? or suggest the way forward...

Copied from original issue: codebndr#38

[loathingKernel]

From @Whocareswhowins on March 24, 2017 22:46

Yes you are correct it does not work.

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On 24 Mar 2017, at 15:46, elik745i notifications@github.com wrote:

EEPROM.put and get requests does not work with newEEPROM library, can anyone fix it? or suggest the way forward...

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[loathingKernel]

From @elik745i on March 25, 2017 5:1

how can it be fixed? maybe someone has more programming skills to do that? I'm currently going deep into the coding to try and fix it... I need to use that feature in my project at http://www.voltrans.az/?page_id=1969&lang=en

[loathingKernel]

From @per1234 on March 25, 2017 5:32

Just use the standard EEPROM library included with the Arduino IDE but make sure to leave alone the EEPROM addresses Ariadne uses for its configuration settings. Ariadne uses EEPROM addresses 0-26 for network settings and 27-63 for the password used in the EthernetReset library. If you're not using the password then you can use EEPROM addresses 27-63 for other purposes. The NewEEPROM library just makes sure you won't use those addresses, there's no magic to it.

[loathingKernel]

From @elik745i on March 25, 2017 10:48

I'm afraid it does not work like that. Ariadne library is linked to newEEPROM library and even if I'm not declaring it and as you said using standard EEPROM library it's screaming compillation errors. Try this sketch and you'll see what do I ment:
`/*
Web Server

A simple web server that shows the value of the analog input pins.
using an Arduino Wiznet Ethernet shield.

Circuit:

• Ethernet shield attached to pins 10, 11, 12, 13
• Analog inputs attached to pins A0 through A5 (optional)

created 18 Dec 2009
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
modified 02 Sept 2015
by Arturo Guadalupi

*/

#include <NetEEPROM.h>
//#include <NewEEPROM.h>
#include <EEPROM.h>
#include <SPI.h>
#include <Ethernet.h>
#include <EthernetReset.h>

EthernetReset reset(8080);
EthernetServer server(80);

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
IPAddress ip(192, 168, 1, 128);

// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):

void setup() {

// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}

// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
int k = 3000;
EEPROM.put(100,k);
reset.begin();
}

void loop() {
reset.check();
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 5"); // refresh the page automatically every 5 sec
client.println();
client.println("");
client.println("");
// output the value of each analog input pin
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
int sensorReading = analogRead(analogChannel);
client.print("analog input ");
client.print(analogChannel);
client.print(" is ");
client.print(sensorReading);
client.println("
");
}
client.println("");
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
} else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
}
}
`

[loathingKernel]

From @per1234 on March 25, 2017 12:44

I see. You can get around that issue by using avr-libc's eeprom.h. You still won't be able to use EEPROM.put() but it does allow you to write or read an int with a single function call:

#include <NetEEPROM.h>
#include <avr/eeprom.h>
#include <SPI.h>
#include <Ethernet.h>
#include <EthernetReset.h>

EthernetReset reset(8080);
EthernetServer server(80);

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
IPAddress ip(192, 168, 1, 128);

// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):

void setup() {

  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip);
  server.begin();
  Serial.print("server is at ");
  Serial.println(Ethernet.localIP());
  int k = 3000;
  eeprom_update_word((uint16_t*)100, k);
  reset.begin();
}

void loop() {
  reset.check();
  // listen for incoming clients
  EthernetClient client = server.available();
  if (client) {
    Serial.println("new client");
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.write(c);
        // if you've gotten to the end of the line (received a newline
        // character) and the line is blank, the http request has ended,
        // so you can send a reply
        if (c == '\n' && currentLineIsBlank) {
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connection: close"); // the connection will be closed after completion of the response
          client.println("Refresh: 5"); // refresh the page automatically every 5 sec
          client.println();
          client.println("");
          client.println("");
          // output the value of each analog input pin
          for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
            int sensorReading = analogRead(analogChannel);
            client.print("analog input ");
            client.print(analogChannel);
            client.print(" is ");
            client.print(sensorReading);
            client.println("                           ");
          }
          client.println("");
          break;
        }
        if (c == '\n') {
          // you're starting a new line
          currentLineIsBlank = true;
        } else if (c != '\r') {
          // you've gotten a character on the current line
          currentLineIsBlank = false;
        }
      }
    }
    // give the web browser time to receive the data
    delay(1);
    // close the connection:
    client.stop();
    Serial.println("client disconnected");
  }
}

I've never liked the NewEEPROM system. I guess it was intended to be more user friendly by hiding the issue of the EEPROM addresses used by Ariadne but I think it ends up causing more problems than just clearly documenting the address range used by Ariadne and letting the user deal with it however they like.

[loathingKernel]

From @elik745i on March 25, 2017 12:51

Big thanks for help, but that is just an example of webserver I'm trying to get working before implementing update over the web interface into my opensourse smarthouse project. I've already built it around put and get methods and there are minimum 100 of them in the different places in the 2500 line of code (((((
and it's not just int I'm writing into the memory, but also long and char rows
I need to be able to use get and put methods (((
Is there a way to unlink that NewEEPROM library and get ariadne to work with standard EEPROM lib????

[loathingKernel]

In the NetEEPROM library replace the NewEEPROM.h include with the EEPROM.h and see if that helps, just remember to not write in the first few addresses of the EEPROM, as @per1234 explained a few comments above.

[loathingKernel]

From @per1234 on March 25, 2017 13:44

The problem is the EEPROM library's global class object name conflicts with the NewEEPROM library's global class object name, causing the error:

In file included from C:\Users\per\AppData\Local\Temp\arduino_modified_sketch_93640\sketch_mar25a.ino:13:0:

E:\ArduinoIDE\arduino-1.8.2\hardware\arduino\avr\libraries\EEPROM\src/EEPROM.h:145:20: error: conflicting declaration 'EEPROMClass EEPROM'

 static EEPROMClass EEPROM;

                    ^

In file included from E:\Stuff\misc\electronics\arduino\libraries\NetEEPROM/NetEEPROM.h:26:0,

                 from C:\Users\per\AppData\Local\Temp\arduino_modified_sketch_93640\sketch_mar25a.ino:11:

E:\Stuff\misc\electronics\arduino\hardware\ariadne\avr\libraries\NewEEPROM/NewEEPROM.h:47:23: note: previous declaration as 'NewEEPROMClass EEPROM'

 extern NewEEPROMClass EEPROM;

when you try to compile @elik745i's code. I think the easiest solution is to:
Change line 47 of NewEEPROM.h from:

extern NewEEPROMClass EEPROM;

to:

extern NewEEPROMClass NewEEPROM;

Change line 68 of NewEEPROM.cpp from:

extern NewEEPROMClass EEPROM;

to:

extern NewEEPROMClass NewEEPROM;

After doing this you would need to use NewEEPROM.read() and NewEEPROM.write() instead of EEPROM.read() and EEPROM.write() if you're using the NewEEPROM library but that shouldn't be a problem since you're not directly using that library.

[loathingKernel]

From @elik745i on March 25, 2017 14:46

EXCELLENT!!! thanks, it looks like it's working now! I'll try to implement changes into my project now...

[loathingKernel]

From @elik745i on March 25, 2017 15:53

Cool, it's working! Thanks to everyone and special to per1234