#include "mbed.h"
#include "EthernetInterface.h"

EthernetInterface eth;    //ethernet object
TCPSocketConnection socket;  //socket object
Serial pc(USBTX,USBRX);      //interface with TeraTerm
AnalogIn mux_output(p17);

const char * mbedIp = "192.168.0.83";
const char * mbedMask = "255.255.255.0";
const char * mbedGateway = "192.168.0.1';

// A data structure of the data to send
// In this case it's fairly pointless, you may as well just use a uint16_t[] directly in place of this
// But if you package what you want into a structure then you don't need to change the 
// transmission code if you change what is being sent, you just change the structure definition.
typedef struct packetToSent_s {   
float data[160];   //specify data types within the struct, in this case an 80 element array of 16-bit unsigned int
} packetToSend_t;

packetToSend_t dataOut;  //an instance of the packet to send

int main()
{    
    eth.init(mbedIp,mbedMask,mbedGateway);
    wait(2);
    eth.connect();
    wait(2);    //allow the mbed time to be dynamically assigned an IP and to connect before printing IP address
    pc.printf("IP address is %s\n\n", eth.getIPAddress()); //function in ethernet library to return string containing IP
 
    socket.connect("10.58.74.19", 1001);  //ip address of PC, and port to be listened to by the HOST     
    wait(2);
    
            //specify data to be sent. Here we would desire the output from the multiplexer.
            for(int i=0;i<160;i++) {
                float a = mux_output.read()-0.11;
                dataOut.data[i]=a;  //populate array with analogue readings from pin 17. Remove offset.
                wait(0.1);
                }
    
    //send the data packet by passing a pointer to the start of the data, and specifying its size. 
    
    socket.send_all((char*)&dataOut,sizeof(packetToSend_t));



}