receive events about printer status

[NqCompiler]

Hey,

Is it possible to get printer status from connected devices?

For example if paper is empty or the connection is lost

Keep up the great work!

[tr3v3r]

@NqCompiler hi! Sure. Please take a look at startMonitorPrinter. I suppose it returns all data you’ve mentioned.

moreover after every print - promise with corresponding data will be returned as well.

Here the code snippet how to use it ( from example folder)

React.useEffect(() => {
    EscPosPrinter.addPrinterStatusListener((status) => {
      console.log('current printer status:', status);
    });
  }, []);

…..

Button
        title="Start monitor printer status"
        disabled={!printer}
        color={!printer ? 'gray' : 'blue'}
        onPress={async () => {
          if (printer) {
            if (!init) {
              await EscPosPrinter.init({
                target: printer.target,
                seriesName: getPrinterSeriesByName(printer.name),
              });
              setInit(true);
            }

            const status = await EscPosPrinter.startMonitorPrinter();

            console.log('Printer status:', status);
          }
        }}
      />
      ```

[NqCompiler]

I had so many tabs open and was looking at the examples from your fork from react-native-thermal-receipt-printer and somehow ended up creating the issue at the right place.

Thanks for the fast response and help :)

[Rehankhalil462]

@tr3v3r @NqCompiler when device is connected using instantiate method, printing is working fine but this startsMonitorPrinter() is showing
DISCONNECT OFFLINE UNKNOWN for

 EscPosPrinter.addPrinterStatusListener((status) => {

      console.log(status.connection, status.online, status.paper); // will be executed every 5 sec
    });

What is the issue?