ESP8266 Community Forum

- Sun Aug 09, 2015 12:33 pm #25466 No, not yet !
I have a pending PR in IGRR's GitHub, and I don't want to mix things together.
But I will ... There is also the SPIFFS fileSize() enhancement I did this morning.
I think IGRR is busy these days at a meeting in Boston.

In the mean time, merging my above code is pretty trivial.

- Sat Jan 09, 2016 12:21 pm #38315 Hi,

I'm new to the forum, thought it's time I join (read pages here occasionally and there's lots of great info, thanks). Just started playing with the ESP devices: versatile, simple to program and low cost - pretty impressive! My focus is on home automation at this time.

Anyway, I know this is an older thread but thought I'd reply as I had the same issue. I was able to write out the IP via Serial.print(WiFi.localIP()) fine but was struggling to get the formatted IP into a string.

I'm on the latest versions, so not sure if this would have solved your problem at the time.
If it does, you'll kick yourselves ...

String ipaddress = WiFi.localIP().toString();

Thought I'd leave that there for anyone Googling (this thread came up for me)!

Cheers,

Tim

- Fri Jan 15, 2016 12:59 pm #38877 Good solution!

this works too:

Code: Select allString ipToString(IPAddress ip){
  String s="";
  for (int i=0; i<4; i++)
    s += i  ? "." + String(ip[i]) : String(ip[i]);
  return s;
}


Odilon

- Fri Jan 15, 2016 1:19 pm #38879

Personally, I've added a new method in IPAddress class.
In IPAddress.h

Code: Select allchar * toCharArray();

In IPAddress.cpp

Code: Select allchar *IPAddress::toCharArray()
{
    static char szRet[20];
    String str = String(_address.bytes[0]);
    str += ".";
    str += String(_address.bytes[1]);
    str += ".";
    str += String(_address.bytes[2]);
    str += ".";
    str += String(_address.bytes[3]);
    str.toCharArray(szRet, 20);
    return szRet;
}


So, you can easily print IP under almost and Printable, such as Serial.println(Wifi.localIP().toCharArray());

Why szRet[20]? An IPv4-address would at most be 15 characters + the ending NULL-character, ie. szRet[16] should be enough and you're wasting 4 bytes for nothing. Am I missing something here?