Arduino R4 WiFi static IP not working

Projects Programming
1

I am trying to either set a static IP or have the device set a name. I can’t get either to work on a UNO R4 WiFI board. I see a sort of work around for the Giga board, Is there a Fix for the UNO R4 WiFi board? All the libraries and the firmware have been updated. I have tried many variations calling the config() method. The code is:

if (WiFi.status() == WL_NO_MODULE)
{
Serial.println("Communication with WiFi module failed!");
// don't continue
while (true);
}
String fv = WiFi.firmwareVersion();
if (fv < WIFI_FIRMWARE_LATEST_VERSION)
{
Serial.println("Please upgrade the firmware");
}
IPAddress ip("192,168,5,230");
IPAddress gateway("192,168,5,1");
IPAddress subnet("255,255,255,0");
IPAddress DNS("192,168,5,1");
// attempt to connect to WiFi network:
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
WiFi.config(ip,DNS,gateway,subnet);
WiFi.setHostname("heatsrvr");
status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
delay(10000);
}

2

It's been a while since you were here, did you forget how to post code?

3

Fun fact: IPAddress is a subclass of Printable, so they can print themselves.

#include <IPAddress.h>

void setup() {
  Serial.begin(115200);
  IPAddress ip("4.3.2.1");
  Serial.println(ip);
}

void loop() {}

Which brings up the first thing to check: it has several constructors. The most obvious:

  • four uint8_t octets separated, as function arguments usually are, with commas
  • a single string with using dotted-quad notation, using U+002E: officially a "full stop", and commonly "period" in the US.
4

It seems that the comma format does not work although it was in some examples. I changed it to . delimited and the static ip worked. It still does not honor the WiFi.setHostname("heatsrvr"); call. Is there something else that needs to be done to get the name to work?

On the question of posting the code, I was not able to find any guide lines on the forum but I did find something in Google. I had selected the code then clicked on the option. It changed the background and removed all indenting. Apparently that was the wrong order for pasting the code.

5

A recent thread about that

As for <CODE/>: yeah if you're using the rich text editor, default for new users, applying that to existing text does not create a code block; it only styles the selected text, line by line. Clicking it first should create an empty block, with a language picker in the top right. After the default empty choice (which is approximately "Arduino"), the first two choices are bash and cpp