I am working on a project where I need the Wifi status (connected or disconnected) for further Operations. I made a class for the wifi with some basic function:
using Toybox.Communications as Comm;
using Toybox.System as Sys;
class wifiScan {
var wifiStatus = false;
var errorCode;
function initialize() {
System.println("initialize() called: wifiStatus=" + wifiStatus);
}
function getStatus(){
System.println("getStatus() called: Returning wifiStatus=" + wifiStatus);
return wifiStatus;
}
function getError(){
return errorCode;
}
function checkWifiConnection() {
Comm.checkWifiConnection(method(:onWifiConnectionStatus));
System.println("checkWifiConnection() called");
}
// Callback method for checkWifiConnection
function onWifiConnectionStatus(result) {
wifiStatus = result[:wifiAvailable];
errorCode = result[:errorCode];
System.println("onWifiConnectionStatus() called: wifiAvailable=" + wifiStatus);
}
}
The problem is that if I want to use the getStatus() function in another file but I get the wrong result (false) because it runs quicker than onWifiConnectionStatus. The result in the console is as follows:
initialize() called: wifiStatus=false
checkWifiConnection() called
getStatus() called: Returning wifiStatus=false
onWifiConnectionStatus() called: wifiAvailable=true
Naturally, I tried to handle this by setting up a callback. I setup the callback as follows:
using Toybox.Communications as Comm;
using Toybox.System as Sys;
class wifiScan {
var wifiStatus = false;
var errorCode;
var callbackMethod;
function initialize() {
System.println("initialize() called: wifiStatus=" + wifiStatus);
}
function getStatus(){
System.println("getStatus() called: Returning wifiStatus=" + wifiStatus);
return wifiStatus;
//System.println("Wifi connection unavailable");
}
function getError(){
return errorCode;
//System.println("Error: " + errorCode);
}
function checkWifiConnection(methodObj) {
callbackMethod = methodObj; // Store the Method object
Comm.checkWifiConnection(method(:onWifiConnectionStatus));
System.println("checkWifiConnection() called");
}
// Callback method for checkWifiConnection
function onWifiConnectionStatus(result) {
wifiStatus = result[:wifiAvailable];
errorCode = result[:errorCode];
System.println("onWifiConnectionStatus() called: wifiAvailable=" + wifiStatus);
// Invoke the callback, if it exists
if (callbackMethod != null) {
callbackMethod.invoke(); // Invoke the callback method
}
}
}and I call it as such:
var result = gps.method(:getStatus); var wifi = new wifiScan(result);
This made the code in the intended order. However, there is no way for me to use the variable wifiStatus outside the class since the variable 'result' is of type Obj. Is there a way to get around this? like 'await' in other programming languages for example? I tried polling but I ran into a watchdog error
