Hi,
I'm trying to make my wifi module running correctly. I started with a simple get request and used the code I found on the internet in tutorials and with some modification, had the module running. The thing is that after some trials where it sends get request correctly and I have the response back, eventually I get a 'connection timeout' of my code (as following). To get the whole back running, I must restart the module and Arduino and connect to wifi again. First thing came to my mind is that maybe I must "flash" some thing in memory somewhere after a get request? Please help
#include <SoftwareSerial.h>
#define SSID "mySSID"
#define PASS "myPASS"
SoftwareSerial sser(2, 3); // RX, TX for debugging
int led = 13; // the pin that the LED is atteched to
int sensor = 7; // the pin that the sensor is atteched to
int state = LOW; // by default, no motion detected
int val = 0;
void setup() {
// put your setup code here, to run once:
sser.begin(9600);
Serial.begin(9600);
sser.println("AT+RST");
while(!(sser.find("ready"))){
delay(1000);
Serial.println("waiting...");
}
Serial.println("WiFi - Module is ready");
// try to connect to wifi
boolean connected=false;
for(int i=0;i<5;i++){
if(connectWiFi()){
connected = true;
Serial.println("connecting wifi...");
break;
}
}
if (!connected){
Serial.println("wifi connection failed!");
while(1);
}
Serial.println("wifi connection ok wait...");
delay(5000);
sser.println("AT+CIPMUX=0"); // set to single connection mode
Serial.println("ok wait...");
delay(1000);
pinMode(led, OUTPUT); // initalize LED as an output
pinMode(sensor, INPUT);
}
void loop()
{
Serial.println("loop cycling...");
val = digitalRead(sensor); // read sensor value
if (val == HIGH) { // check if the sensor is HIGH
digitalWrite(led, HIGH); // turn LED ON
delay(100); // delay 100 milliseconds
if (state == LOW) {
Serial.println("Motion detected!");
state = HIGH; // update variable state to HIGH
fireit(); //inform via wifi
}
}
else {
digitalWrite(led, LOW); // turn LED OFF
delay(200); // delay 200 milliseconds
if (state == HIGH){
Serial.println("Motion stopped!");
state = LOW; // update variable state to LOW
}
}
}
void fireit(){
String cmd = "AT+CIPSTART=\"TCP\",\"";
cmd += "mysite.com";
cmd += "\",80";
sser.println(cmd);
Serial.println(cmd);
delay(1000);
if(sser.find("Error")){
Serial.println("got error, sorry!");
return;
}
cmd = "GET /me/112233 HTTP/1.0\r\nHost: mysite.com\r\n\r\n";
sser.print("AT+CIPSEND=");
sser.println(cmd.length());
delay(1000);
if(sser.find(">")){
Serial.print(">");
}else{
sser.println("AT+CIPCLOSE");
Serial.println("connection timeout");
delay(1000);
//fireit();//recursive call until getting the result
return;
}
sser.print(cmd);
Serial.print(cmd);
Serial.print("going long delay...");
delay(3000);
delay(3000);
//sser.println("AT+CIPCLOSE");
while (1){
Serial.println("in while 1 ...");
if(sser.available()){
char c = (char)sser.read();
Serial.print(c);
// if(c=='\r') Serial.print('\n');
// else Serial.print(c);
delay(10);
break;
}
}
}
boolean connectWiFi()
{
sser.println("AT+CWMODE=1");
String cmd="AT+CWJAP=\"";
cmd+=SSID;
cmd+="\",\"";
cmd+=PASS;
cmd+="\"";
Serial.println(cmd);
sser.println(cmd);
delay(2000);
if(sser.find("OK")){
Serial.println("OK, Connected to WiFi.");
return true;
}else{
Serial.println("Can not connect to the WiFi.");
return false;
}
}
