hello everyone...for my experiment i need to test the real data rate of the official arduino wifi shield...I use an arduino uno+the shield and the data rate that i found was about 2Kbps...i think that is a little slow...there's anyone that can help me to improve the throughput?
thank you
PS here there is the sketch
#include <Arduino.h>
#include <SPI.h>
#include <WiFi.h>
//pay attention dim_pkt must be divided by four
//#define dim_pkt 100
//#define dim_pkt 200
//#define dim_pkt 300
//#define dim_pkt 400
//#define dim_pkt 500
//#define dim_pkt 600
//#define dim_pkt 700
#define dim_pkt 800
unsigned long time[2]={0,0};//calculate the trasmission time of a single byte
int cont=0;
byte bytetest;
char ssid[] = ""; // your network SSID (name)
char pass[] = "*************"; // your network password
void printWifiStatus() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your WiFi shield's IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.print(rssi);
Serial.println(" dBm");
}
//union that will have inside the dimension of the packet
union numero{
unsigned long dim;
byte dim_vect[4];
};
//union che conterra il buffer
byte bufferbyte [dim_pkt];
union buffer{
unsigned long timeer[dim_pkt/4];
byte bufferbyte[dim_pkt];
};
int status = WL_IDLE_STATUS;
WiFiServer server(80);
void setup() {
//Initialize serial and wait for port to open:
Serial.begin(9600);
// check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue:
while(true);
}
// attempt to connect to Wifi network:
while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
status = WiFi.begin(ssid, pass);
}
server.begin();
// you're connected now
printWifiStatus();
}
int j=0;
union numero Dimension;
union buffer Buffer;
void loop() {
// listen for incoming clients
WiFiClient client = server.available();
if (client == true) {
Serial.println("client connected");
// write bytes from the incoming client
// to any clients connected to the server:
for (int i=0;i <dim_pkt/4;i++) {
//Serial.println(time[0]);
// time[1]=micros();
Buffer.bufferbyte[j]=i;//it's only a test of trasmission
// server.write(Buffer.bufferbyte[0]);//
// Buffer.bufferbyte[j4+1]=i4+1;
// server.write(Buffer.bufferbyte[1]);
// Buffer.bufferbyte[j4+2]=i4+2;
// server.write(Buffer.bufferbyte[2]);
// Buffer.bufferbyte[j4+3]=i4+3;//i4+3
//server.write(Buffer.bufferbyte,4);
//server.write(prova);
//time[0]=micros()-time[1];
j++;
if ((i+1)%90==0){
server.write(Buffer.bufferbyte,90);//because if i write a number>90 the connected client doesn't read anything
j=0;
}
}
server.write(Buffer.bufferbyte,j);
}
if (j!=0){
Serial.println("client disconnected");
j=0;
Serial.println("********************************************************");
}
}