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#include <WiFiUdp.h>
#include "arduino_secrets.h"
int status = WL_IDLE_STATUS;
int keyIndex = 0;
unsigned int localPort = 2390;
char ssid[] = SECRET_SSID;
char pass[] = SECRET_PASS;
char key[22] = SECRET_KEY;
char servKey[22] = SECRET_SERV_KEY;
char separateur[] = ":";
IPAddress multicastAddress = IPAddress(229, 97, 225, 142);
char packetBuffer[256]; //buffer to hold incoming packet
char *token;
WiFiUDP Udp;
void setup() {
Serial.begin(9600);
// check for the WiFi module:
while (WiFi.status() == WL_NO_MODULE) {
Serial.println("Communication with WiFi module failed!");
delay(5000);
}
// check the firmware
if (WiFi.firmwareVersion() < WIFI_FIRMWARE_LATEST_VERSION) {
Serial.println("Please upgrade the firmware");
}
// 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);
delay(5000);
}
Serial.println("Connected to WiFi");
Serial.println("\nStarting connection to server...");
Udp.beginMulticast(multicastAddress, localPort);
initCode();
}
void loop() {
int packetSize = Udp.parsePacket();
if (packetSize) {
int len = Udp.read(packetBuffer, 255);
if (len > 0) {
packetBuffer[len] = 0;
}
printData(packetSize);
token = strtok(packetBuffer, separateur);
if (strcmp(token, key) == 0) {
token = strtok(NULL, separateur);
if (strcmp(token, servKey) == 0) {
token = strtok(NULL, separateur);
if (strcmp(token, "SERVER_TEST") == 0) {
sendMsg("TEST_RECEIVED");
} else if (strcmp(token, "SERVER_STILLCONNECTED") == 0) {
sendMsg("STILLCONNECTED");
} else {
runCode(token);
}
}
}
}
}
void printData(int packetSize) {
Serial.print("Received packet of size ");
Serial.println(packetSize);
Serial.print("From ");
IPAddress remoteIp = Udp.remoteIP();
Serial.print(remoteIp);
Serial.print(", port ");
Serial.println(Udp.remotePort());
Serial.println("Contents : ");
Serial.println(packetBuffer);
}
void sendMsg(char *msg){
char str[256];
sprintf(str,"%s%s%s%s%s",servKey, separateur, key, separateur, msg);
Udp.beginPacket(multicastAddress, localPort);
Udp.write(str);
Udp.endPacket();
}