How to reduce the size of a sketch if it's too big when using enc2860 module and arduino uno

[oyunerdene102521]

Hi all, in this code I'm trying to upload this code below and whenever uploading the code in Arduino IDE, error compiling for board Arduino Uno. That's because the sketch is too big. I don't know how to reduce the sketch. Please help me.
The error message is: Arduino: 1.8.16 (Windows 10), Board: "Arduino Uno
In file included from C:\Users\user\Documents\Arduino\libraries\UIPEthernet\utility\mempool.cpp:22:0:
C:\Users\user\Documents\Arduino\libraries\UIPEthernet\utility\logging.h:24:2: warning: #warning "You can configure LogObject and ACTLOGLEVEL in 'utility/logging.h'. More verbosity more memory usage." [-Wcpp]
#warning "You can configure LogObject and ACTLOGLEVEL in 'utility/logging.h'. More verbosity more memory usage."
^~~~~~~
text section exceeds available space in boardSketch uses 34772 bytes (107%) of program storage space. Maximum is 32256 bytes.

Global variables use 2512 bytes (122%) of dynamic memory, leaving -464 bytes for local variables. Maximum is 2048 bytes.
Sketch too big; see https://support.arduino.cc/hc/en-us/articles/360013825179 for tips on reducing it.
Error compiling for board Arduino Uno.

#include <ArduinoRS485.h> 
#include <ArduinoModbus.h>
#include <UIPEthernet.h>

//byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xE8 }; 
byte mac[] = {0x00, 0x01, 0x02, 0x03,0x04, 0x05};
IPAddress ip(192,168,11,13); 

  //Ethernet.begin(mac); //Configure IP address via DHCP

EthernetClient client;
ModbusTCPClient modbusTCPClient(client);

IPAddress server(192,168,11,3);

void setup() {

   Serial.begin(19200);

 if (Ethernet.begin(mac) == 0) {
   Serial.println("Failed to configure Ethernet using DHCP");

   // try to congifure using IP address :
   Ethernet.begin(mac, ip);
 } else {
   Serial.print("  DHCP assigned IP ");
   Serial.println(Ethernet.localIP());
 }

 // give the Ethernet shield a second to initialize:
 delay(1000);
 Serial.print("connecting to ");
 Serial.print(server);
 Serial.println("...");

//   if you get a connection, report back via serial:
 if (client.connect(server, 502)) {
   Serial.print("connected to ");
   Serial.println(client.remoteIP());
   client.println("Connection: close");
   client.println();
 } else {
   // if you didn't get a connection to the server:
   Serial.println("connection failed");
 }
  
   Serial.println("Modbus TCP Client Toggle");
       
   Ethernet.begin(mac, ip);  

   delay(1000);

float P_DC;
}

void loop() {

 long regStatus[10];
 long regRaw[10]; 

 long ID,I_DC,I_AC,V_DC,V_AC,P_DC,P_AC,F_Hz;
 String readString;
 long Address;
 
 if (!modbusTCPClient.connected()) {
   // client not connected, start the Modbus TCP client
   Serial.println("Attempting to connect to Modbus TCP server");
   
   if (!modbusTCPClient.begin(server)) {
     Serial.println("Modbus TCP Client failed to connect!");
   } else {
     Serial.println("Modbus TCP Client connected");
   }
 } else {



while (Serial.available()) {
 delay(2);
 char c = Serial.read();
 readString += c;
}
if (readString.length() > 0) {
 Serial.println(readString);
 Address = atol(readString.c_str());
 Serial.println(Address);
}

   ID = modbusTCPClient.holdingRegisterRead(40070);
   Serial.print("ID = ");
   Serial.println(ID);
   F_Hz= modbusTCPClient.holdingRegisterRead(40086) /100;
   Serial.print("F_Hz = ");
   Serial.println(F_Hz);
   I_DC = modbusTCPClient.holdingRegisterRead(40097) /10;
   Serial.print("I_DC = ");
   Serial.println(I_DC);
   I_AC = modbusTCPClient.holdingRegisterRead(40072) /10;
   Serial.print("I_AC = ");
   Serial.println(I_AC);
   V_DC = modbusTCPClient.holdingRegisterRead(41124) /10;
   Serial.print("V_DC = ");
   Serial.println(V_DC);
   V_AC = modbusTCPClient.holdingRegisterRead(40080) /10;
   Serial.print("V_AC = ");
   Serial.println(V_AC);
   float ar = (float)modbusTCPClient.holdingRegisterRead(40101)/1000;
   Serial.println(ar);

   Serial.print("P_DC = ");
   Serial.println(P_DC);
   P_AC = modbusTCPClient.holdingRegisterRead(40084) /10;
   Serial.print("P_AC = ");
   Serial.println(P_AC);
   
   delay(1000);
 }
}

[UKHeliBob]

@oyunerdene102521

Please help me.

Start by helping us by posting your code in code tags. Did you get a warning that the code was not on code tags when you posted it ?

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

Use code tags (the </> icon above the compose window) to make it easier to read and copy for examination

How to get the best out of this forum

See also FAQ - Arduino Forum for general rules on forum behaviour and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is fru…

[markd833]

Code tags won't reduce your code size but they will help us to read your code.

@oyunerdene102521

Serial.println("Failed to configure Ethernet using DHCP");

Can be changed to:

Serial.println(F("Failed to configure Ethernet using DHCP"));

To keep the constant text in flash memory. Do the same for your other constant text strings.

If you've still run out of memory, post the compiler results here so we can see how bad it is.

[Juraj]

use the EthernetENC library. if you use a fixed IP address you can turn off UDP with UIP_CONF_UDP set to 0 and save 4 kB of flash. you can tune the parameters of the library.

https://github.com/jandrassy/EthernetENC/wiki/Settings

[oyunerdene102521]

The error message is: Arduino: 1.8.16 (Windows 10), Board: "Arduino Uno
In file included from C:\Users\user\Documents\Arduino\libraries\UIPEthernet\utility\mempool.cpp:22:0:
C:\Users\user\Documents\Arduino\libraries\UIPEthernet\utility\logging.h:24:2: warning: #warning "You can configure LogObject and ACTLOGLEVEL in 'utility/logging.h'. More verbosity more memory usage." [-Wcpp]
#warning "You can configure LogObject and ACTLOGLEVEL in 'utility/logging.h'. More verbosity more memory usage."
^~~~~~~
text section exceeds available space in boardSketch uses 34772 bytes (107%) of program storage space. Maximum is 32256 bytes.

Global variables use 2512 bytes (122%) of dynamic memory, leaving -464 bytes for local variables. Maximum is 2048 bytes.
Sketch too big; see https://support.arduino.cc/hc/en-us/articles/360013825179 for tips on reducing it.
Error compiling for board Arduino Uno.

[markd833]

You've run out of program space (the "text section") and RAM (the "dynamic memory").

Follow the suggestion by @Juraj in #4 to reduce the amount of program space. That might leave you enough room to put the constant text strings into FLASH (aka program space) using my suggestion in #3.

Report back the complier results again if your code still won't fit. And upload your latest code as well.

[oyunerdene102521]

I'm still struggling with error compiling even though defining UIP_CONF_UDP 0 in utility/uipethernet-conf.h header file.
The error message is: C:\Users\User\AppData\Local\Temp\ccylDivv.ltrans0.ltrans.o: In function setup': C:\Users\User\Desktop\nn\modbus_ok1/modbus_ok1.ino:17: undefined reference to UIPEthernetClass::begin(unsigned char const*)'
collect2.exe: error: ld returned 1 exit status
exit status 1
Error compiling for board Arduino Uno.

[Juraj]

begin(mac) uses DHCP to get the IP address. DHCP uses UDP. so begin(mac) is not available if you turn off UDP.
I wrote that you must use a static IP address with begin(mac, ip)

and you didn't switch to EthernetENC? you still use UIPEthernet?

[oyunerdene102521]

I'm totally new to coding pls tell me how to use static IP address. I'm using EthernetENC.h instead of UIPEthernet.

[Juraj]

networking is advanced topic. why do you do a project with ethernet if you are new to codding?

just remove if (Ethernet.begin(mac) == 0) { and the corresponding else block.
the Ethernet.begin(mac, ip); is there in that if

[oyunerdene102521]

Hello, I have tried to reduce flash memory using UIP_CONF_UDP 0 in ethernetENC header file.
Now Im trying to use 90 or 91% of dynamic memory.
After I upload the code below that message comes out:
Sketch uses 25708 bytes (79%) of program storage space. Maximum is 32256 bytes.
Global variables use 1987 bytes (97%) of dynamic memory, leaving 61 bytes for local variables. Maximum is 2048 bytes.
Low memory available, stability problems may occur.

Help me to reduce more memory on Arduino UNO

#include <ArduinoRS485.h> 
#include <ArduinoModbus.h>
#include <EthernetENC.h>


byte mac[] = {0x28, 0x16, 0xAD, 0x89,0x96, 0x49};
IPAddress ip(192,168,0,111); 

EthernetClient client;
ModbusTCPClient modbusTCPClient(client);

IPAddress server(192,168, 0, 129);

void setup() {

   Serial.begin(9600);

   Ethernet.begin(mac, ip);

   Serial.println(Ethernet.localIP());

 delay(1000);
 Serial.print(server);

 if (client.connect(server, 502)) {
   Serial.print("connected to ");
   Serial.println(client.remoteIP());
   client.println("Connection: close");
   client.println();
 } else {
   // if you didn't get a connection to the server:
   Serial.println("connection failed");
 }
  
 Serial.println("Modbus TCP Client Toggle");
       
   Ethernet.begin(mac, ip);  

   delay(1000);
}

void loop() {

 int ID;
 String readString;
 long Address;
 
 if (!modbusTCPClient.connected()) {
    //client not connected, start the Modbus TCP client 
  Serial.println("Attempting to connect to Modbus TCP server");
   
  if (!modbusTCPClient.begin(server)) {
  Serial.println("Modbus TCP Client failed to connect!");
  } else {
  Serial.println("Modbus TCP Client connected");
   }
} else {

while (Serial.available()) {
 delay(2);
 char c = Serial.read();
 readString += c;
}
if (readString.length() > 0) {
 Serial.println(readString);
 Address = atol(readString.c_str());
 Serial.println(Address);
}

  ID = modbusTCPClient.holdingRegisterRead(40070);
  // Serial.print("ID = ");
   Serial.println(ID);
  //F_Hz= modbusTCPClient.holdingRegisterRead(40086)/100;
  // Serial.print("F_Hz = ");
  //Serial.println(F_Hz);
 //I_DC = modbusTCPClient.holdingRegisterRead(40097)/10;
   //Serial.print("I_DC = ");
   //Serial.println(I_DC); 
//   V_AC = modbusTCPClient.holdingRegisterRead(40080) /10;
   //Serial.print("V_AC = ");
   //Serial.println(V_AC);  
   delay(1000);
 }
 }

[markd833]

Try implementing my suggestion in #3 to use F() around your text strings in your print() statements.

[Juraj]

what markd recommends and you can further reduce RAM usage with settings in utility/uipethernet-conf.h

[david_2018]

Unrelated to the code size problem, are you sure the calls to holdingRegisterRead are corrrect? That function takes an int as an argument, which has a maximum value of 32767 on an UNO.