arduino nano with ethernet shield freezes after a few hours/days.. randomly

Projects Programming
1

Hi I'm working on a code which freezes randomly.. Pls help me?
Thanks

https://cdn.instructables.com/FPR/ZG1M/JF8IV0I1/FPRZG1MJF8IV0I1.LARGE.jpg

#include <UIPEthernet.h> // Used for Ethernet
#include <string.h>
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include "DigitalIO.h"
#undef SOFT_SPI_MISO_PIN
#undef SOFT_SPI_MOSI_PIN
#undef SOFT_SPI_SCK_PIN
#define SOFT_SPI_SCK_PIN 7
#define SOFT_SPI_MOSI_PIN 8
#define SOFT_SPI_MISO_PIN 9

RF24 radio(5, 6); // CE, CSN
const byte address[6] = "00001";
struct RFdataPacket {
  int temp, hum, air;
  char sensorId;
};
RFdataPacket dataReceived = { 0, 0, 0, 0 };
byte mac[] = { 0x54, 0x34, 0x41, 0x30, 0x30, 0x31 };
byte ip[] = {10, 152, 16, 166};
byte subnet[] = {255, 255, 248, 0};
byte gateway[] = {10, 152, 16, 1};
byte dnss[] = {10, 150, 0, 5};
int ledout = 0;
EthernetClient client;
char server[] = "10.152.16.142"; // IP Adres (or name) of server to dump data to
void setup() {
  Ethernet.begin(mac, ip, dnss, gateway, subnet);
  delay(1000);
  radio.begin();
  radio.openReadingPipe(0, address);
  radio.setPALevel(RF24_PA_MAX);
  radio.startListening();
}

void loop() {
  if (radio.available())
  {
    radio.read(&dataReceived, sizeof(RFdataPacket));
    int s = dataReceived.sensorId;
    int t = dataReceived.temp;
    int a = dataReceived.air;
    int h = dataReceived.hum;;
    String responseFromPHPServer = "";
    if (client.connect(server, 80))
    {
      client.flush();
      client.print( "GET /airwatcher/sensorupdate.php?");
      client.print("id=");
      client.print(s);
      client.print("&temp=");
      client.print(t);
      client.print("&hum=");
      client.print(h);
      client.print("&air=");
      client.print(a);
      client.println( " HTTP/1.1");
      client.print( "Host: " );
      client.println(server);
      client.println( "Connection: close" );
      client.println();
      client.println();
      delay(2000);
      client.stop();
    }
  }
}
2

Take a look at the read function in the RF24 library you have installed. In the version I was looking at, the payload_size overwrites the buffer size passed in if it's less than 32 (which yours is).

I suspect you're getting buffer overrun on occasion.

That String that does nothing can go too. If you cut the code down to show this as a reduced sketch that illustrates the problem and the String does get used in the full version, the String itself may be your issue.

3

I reduced the packet size and started to test it... I hope that it will work

#include <UIPEthernet.h> // Used for Ethernet
#include <string.h>
#include <RF24.h>
#include "DigitalIO.h"

#undef SOFT_SPI_MISO_PIN
#undef SOFT_SPI_MOSI_PIN
#undef SOFT_SPI_SCK_PIN
#define SOFT_SPI_SCK_PIN 7
#define SOFT_SPI_MOSI_PIN 8
#define SOFT_SPI_MISO_PIN 9

RF24 radio(5, 6); // CE, CSN
const byte address[6] = "00001";
byte data[4];
byte mac[] = { 0x54, 0x34, 0x41, 0x30, 0x30, 0x31 };
byte ip[] = {10,152,16,166};
byte subnet[] = {255,255,248,0};
byte gateway[] = {10,152,16,1};
byte dnss[] = {10,150,0,5};

EthernetClient client;
char server[] = "10.152.16.142"; // IP Adres (or name) of server to dump data to
unsigned long previousMillis = 0;
const long interval = 10000; // 15 mins. 900000;
void setup() {
  Serial.begin(9600);
  delay(2000);
  Ethernet.begin(mac, ip, dnss, gateway, subnet);
  Serial.print("Local IP:");
  Serial.println(Ethernet.localIP());
  radio.begin();
  radio.openReadingPipe(0, address);
  radio.setPALevel(RF24_PA_MAX);
  radio.startListening();
  Serial.println("Started");
}

void loop() {

  if (radio.available())
  {
    Serial.println("Data Recieved....");
    
    radio.read(&data, 4);
    int s = data[0];
    int t = data[1];
    int a = data[2];
    int h = data[3];
    Serial.println("Sensor ID : ");
    Serial.println(s);
    Serial.println("Temp : ");
    Serial.println(t);
    Serial.println("Air : ");
    Serial.println(a);
    Serial.println("Humidity");
    Serial.println(h);
    boolean insertedToPHPServer = false;
    while (!insertedToPHPServer)
    {
      String responseFromPHPServer = "";
      if (client.connect(server, 80)) {
        //Serial.println("-----> Connected");
        client.flush();
        client.print( "GET /airwatcher/sensorupdate.php?");
        client.print("id=");
        client.print(s);
        client.print("&temp=");
        client.print(t);
        client.print("&hum=");
        client.print(h);
        client.print("&air=");
        client.print(a);
        client.println( " HTTP/1.1");
        client.print( "Host: " );
        client.println(server);
        client.println( "Connection: close" );
        client.println();
        client.println();

        while (client.connected() || client.available())
        {
          char c = client.read();
          Serial.print(c);
          if (c == 'Q')
          {
            insertedToPHPServer = true;
          }
        }
        client.stop();
      }
    }
  }
}