Arduino PINs not behaving equally - arduino

Question

I have burned this code on my arduino:
#include <SPI.h>
#include <Ethernet.h>
#include <stdlib.h>
using namespace std;
#define BUFFSIZE 16
#define PIN0 0
#define PIN1 1
#define PIN2 2
#define PIN3 3
#define PIN4 4
#define PIN5 5
#define PIN6 6
#define PIN7 7
#define PIN8 8
#define PIN9 9
#define PIN10 10
#define PIN11 11
#define PIN12 12
#define PIN13 13
// For mac address please view the Ethernet shield.
byte mac[] = {0x90, 0xA2, 0xDA, 0x0D, 0x85, 0xD5};
IPAddress server(192, 168, 0, 61); // IP address of RAAS server
// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192, 168, 0, 62);
// Initialize the Ethernet client library
// with the IP address and port of the server
// that you want to connect to (port 8 is selected for RAAS):
EthernetClient client;
String GetNextCommand()
{
int count,i;
int temp;
String command;
Serial.println("Waiting for next Command.");
while((count = client.available()) < 1 );
for(i = 0; i < count ; i++)
command += (char) client.read();
command.replace("\r","");
command.replace("\n","");
Serial.println(command);
return command;
}
bool ConnectServer() {
int resCount,i;
String response;
Serial.println("Trying to connect...");
// if you get a connection, report back via serial:
if (client.connect(server, 8)) {
Serial.println("connected");
// Make a Handshake request:
client.println("EHLO");
response = GetNextCommand();
if (response == "EHLO" ) {
Serial.println("Server Response OKAY");
return true;
}
} else {
// kf you didn't get a connection to the server:
Serial.println("connection failed");
}
return false;
}
void InitializeBoard() {
pinMode(PIN1, OUTPUT);
pinMode(PIN2, OUTPUT);
pinMode(PIN3, OUTPUT);
pinMode(PIN4, OUTPUT);
pinMode(PIN5, OUTPUT);
pinMode(PIN6, OUTPUT);
pinMode(PIN7, OUTPUT);
pinMode(PIN8, OUTPUT);
pinMode(PIN9, OUTPUT);
pinMode(PIN10, OUTPUT);
pinMode(PIN11, OUTPUT);
pinMode(PIN12, OUTPUT);
pinMode(PIN13, OUTPUT);
digitalWrite(PIN1, LOW);
digitalWrite(PIN2, LOW);
digitalWrite(PIN3, LOW);
digitalWrite(PIN4, LOW);
digitalWrite(PIN5, LOW);
digitalWrite(PIN6, LOW);
digitalWrite(PIN7, LOW);
digitalWrite(PIN8, LOW);
digitalWrite(PIN9, LOW);
digitalWrite(PIN10, LOW);
digitalWrite(PIN11, LOW);
digitalWrite(PIN12, LOW);
digitalWrite(PIN13, LOW);
}
void ParseCommand(String str) {
int pinNum;
int pinState = LOW;
String switchNo,operation;
int temp;
temp=0;
temp = str.indexOf(':',temp);
switchNo = str.substring(0,temp);
operation = str.substring(temp+1);//,str.length()-temp-2);
Serial.println("Port: " + switchNo);
Serial.println("Operation: " + operation);
if(operation == "OFF;")
pinState = LOW;
else if(operation == "ON;")
pinState = HIGH;
else Serial.println("Invalid Command from server!");
pinNum = str.toInt();
Serial.print("Setting ");
Serial.print( pinNum);
Serial.print( " to ");
Serial.println( pinState);
switch (pinNum){
case PIN1:
digitalWrite(PIN1, pinState);
break;
case PIN2:
digitalWrite(PIN2, pinState);
break;
case PIN3:
digitalWrite(PIN3, pinState);
break;
case PIN4:
digitalWrite(PIN4, pinState);
break;
case PIN5:
digitalWrite(PIN5, pinState);
break;
case PIN6:
digitalWrite(PIN6, pinState);
break;
case PIN7:
digitalWrite(PIN7, pinState);
break;
case PIN8:
digitalWrite(PIN8, pinState);
break;
case PIN9:
digitalWrite(PIN9, pinState);
break;
case PIN10:
digitalWrite(PIN10, pinState);
break;
case PIN11:
digitalWrite(PIN11, pinState);
break;
case PIN12:
digitalWrite(PIN12, pinState);
break;
case PIN13:
digitalWrite(PIN13, pinState);
break;
default:
Serial.println("Invalid Pin Address!");
}
}
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
// start the Ethernet connection:
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// no point in carrying on, so do nothing forevermore:
// try to congifure using IP address instead of DHCP:
Ethernet.begin(mac, ip);
} else {
Serial.println("Bound on given Mac");
}
// give the Ethernet shield a second to initialize:
delay(1000);
}
void loop() {
//Keep trying to connect to the server until the server response okay!
while (!ConnectServer());
//While Server is connected, keep listening for incoming commands from server.
while (client.connected()) {
String command;
command = GetNextCommand();
ParseCommand(command);
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
Serial.println();
Serial.println("Server Disconnected.");
client.stop();
}
}
Now I have to connect Relays on all the pins from 1-13. But pins are not behaving properly. When I send command 13:ON; or 13:OFF; pins on my Ethernet shield does not change its state in each case. But when I send 03:ON; or 03:OFF; it changes its state exactly w.r.t the command. Similarly some pins are responding like pin 3 and other pins are not (like pin13). Is this some thing to do with the code?

Answer 1

The issue is the Ethernet shield uses pins 13, 12, 11, as SPI . Also 10 and 4, to select SD or ethernet.
pinNum = str.toInt();
And then you have a switch statement to mach pinNum with the correct operation.
I would like to see how the value of str looks before "ParseCommand()" function. Can you show me what prints in the "GetNextCommand()"