File content as of revision 1:61982a2230eb:

#include "mbed.h"
#include "EthernetInterface.h"
#include "LM75B.h"
#include "C12832.h"
#include <string>

//Using Arduino pin notation
C12832 lcd(D11, D13, D12, D7, D10);
LM75B sensor(D14,D15);

//Potentiometer
AnalogIn pot (A0);

//Joystick
DigitalIn left(A4);
DigitalIn right(A5);
DigitalIn select(D4);

void select_state(){
        while(1){
                lcd.cls();
                lcd.locate(0,3);
                lcd.printf("Select State by moving the joystick \n");
                lcd.printf("And select by pressing the joystick \n");
                if(left) {
                    lcd.cls();
                    lcd.printf("The node is a reciever");
                    sender = false;
                    }
                if(right){
                    lcd.cls();
                    lcd.printf("The node is a sender");
                    sender = true;
                    }
                if(select){
                    lcd.cls();
                    break;
                    }
            }
    }
    
void select_address(){
        while(1){
                lcd.cls();
                lcd.locate(0,3);
                lcd.printf("Select your address by moving the joystick \n");
                lcd.printf("And select by pressing the joystick");
                if(left && id_of_sender > 0) {
                    lcd.cls();
                    id_of_sender -= 1;
                    lcd.printf("The address is: 192.168.0.", id_of_sender);
                    }
                if(right && id_of_sender < 255){
                    lcd.cls();
                    id_of_sender += 1;
                    lcd.printf("The address is: 192.168.0.", id_of_sender);
                    }
                if(select){
                    lcd.cls();
                    break;
                    }
            }
    }
    
void select_reciever_id(){
        while(1){
                lcd.cls();
                lcd.locate(0,3);
                lcd.printf("Select reciever id by moving the joystick \n");
                lcd.printf("And select by pressing the joystick");
                if(left && id_of_reciever > 0) {
                    lcd.cls();
                    id_of_reciever -= 1;
                    lcd.printf("The reciever id is: ", id_of_reciever);
                    }
                if(right && id_of_reciever < 255){
                    lcd.cls();
                    id_of_reciever += 1;
                    lcd.printf("The reciever id is: ", id_of_reciever);
                    }
                if(select){
                    lcd.cls();
                    break;
                    }
            }
    }
    
void store_all_values(){
    char upperbyte = (temperature >> 8) & 0xFF;
    char lowerbyte = temperature & 0xFF;
    char potentiometer = pot/1024 * 256;
    buffer[0] = upperbyte;
    buffer[1] = lowerbyte;
    buffer[2] = potentiometer;
    buffer[3] = id_of_sender;
    }
    
void send_all_values(){
    socket.send(buffer,4);
    }
    
void connect_server(){
    TCPSocket socket;
    string address_reciever = "192.168.0." + id_of_reciever;
    socket.open(&eth);
    socket.connect(address_reciever,4000);
    }

void connect_network(){
    EthernetInterface eth;
    string address_sender = "192.168.0." + id_of_sender;
    eth.set_network(address_sender,"255.255.255.0","192.168.0.1");
    eth.connect();
    }

int main()
{
    printf("Client example\n\r");
    
    printf("The client IP address is '%s'\n\r", eth.get_ip_address());
    
    bool sender = false;
    char id_of_sender = 1;
    char id_of_reciever = 1;
    char buffer[4];

    uint16_t temperature = sensor.temp();
    
    select_address(); //What is the IP-address of the node
    select_reciever_id(); //each node wether sender/reciever needs to select reciever id (round-robin)
    select_state(); // is node a Sender or Reciever?
    if(sender){
        connect_network(); //Setup network
        connect_server(); //Connect to server (reciever)
        store_all_values(); //store the data in buffer
        send_all_values();  //send data of buffer to reciever
        sender = false; //if packet is send, node becomes reciever again (round-robin)
        }
    socket.close(); //close communication
}