Epson TM-m30III connection issue

[LodeSmetss]

Description

My application is unable to connect to my Epson TM-m30III printer.

The application fails on pritnerInstance.connect() and logs error [PrinterError: Failed to recover the printer.]
I have tried restarting the printer as described in the documentation, but the issue persists.

I am using the following code

import { memo } from 'react';
import { View, StyleSheet, Text, Pressable, PermissionsAndroid, Platform } from 'react-native';
import { DeviceInfo, Printer, usePrintersDiscovery } from 'react-native-esc-pos-printer';

import { FlatList } from 'react-native-gesture-handler';

export const PrinterNew = memo(() => {
const { start, printerError, isDiscovering, printers } =
usePrintersDiscovery();

async function requestPermissions() {
    if (Platform.OS === 'android') {
        await PermissionsAndroid.requestMultiple([
            PermissionsAndroid.PERMISSIONS.BLUETOOTH_CONNECT,
            PermissionsAndroid.PERMISSIONS.BLUETOOTH_SCAN,
            PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION, // Some devices require this
        ]);
    }
}

async function printTestSheet(printer: DeviceInfo) {
    console.log("Print test sheet")
    try {
        await requestPermissions();
        console.log("permissions granted");
        const printerInstance = new Printer({
            target: printer.target,
            deviceName: printer.deviceName,
        });

        await printerInstance.connect();
        console.log("printer connected");

        const res = await printerInstance.addQueueTask(async () => {
            await printerInstance.addText(`This is a test sheet`);
            await printerInstance.addFeedLine();

            await printerInstance.addCut();
            console.log("data added");

            await printerInstance.sendData();
            console.log("data sent");

            await printerInstance.disconnect();
            console.log("printer disconnected");

            return;
        })
        console.log("result: ", res);
    } catch (error: any) {
        console.error(error);
    }
}

return (
    <View style={styles.container}>
        <View style={styles.contentCotainer}>
            <Text>Discovery</Text>
        </View>
        <FlatList
            renderItem={({ item: printer }) =>
                <Pressable
                    onPress={() => printTestSheet(printer)}
                ><Text>{printer.deviceName} - {printer.deviceType}</Text></Pressable>}
            data={printers}
        />
        <Text>{isDiscovering ? "loading" : "done"}</Text>
        <View style={styles.contentCotainer}>
            <Pressable
                onPress={() => start()}
            >
                <Text>Start discovery</Text>
            </Pressable>

            {printerError ? (
                <Text style={styles.errorText}>{printerError.message}</Text>
            ) : null }
        </View>
    </View>
);

});

const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fcf9f9',
alignItems: 'center',
justifyContent: 'center',
},

contentCotainer: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
},

errorText: {
    color: 'red',
    fontSize: 16,
    marginTop: 20,
},

});

Steps to reproduce

1. Startup Epson TM-m30III
2. Put printer in pairing mode
3. Press "Start discovery"
4. Press the printer instance in the list to try and print a test sheet

react-native-esc-pos-printer version

4.4.3

React Native version

0.76.9

Platforms

Android, iOS

Workflow

Expo Dev Client

Architecture

Paper (Old Architecture)

Build type

Debug app & dev bundle

Device

Real device

Device model

Samsung galaxy a54 and Iphone 8

Acknowledgements

Yes

[amazing4u]

I am also using Epson TM m30iii and it is working fine (tested network + bluetooth).

Did you add the permissions to app.json?

{
  "name": "PrinterApp",
  "displayName": "PrinterApp",
  "version": "1.0.0",
  "android": {
    "permissions": [
      "android.permission.INTERNET",
      "android.permission.BLUETOOTH_SCAN",
      "android.permission.BLUETOOTH_CONNECT",
      "android.permission.BLUETOOTH",
      "android.permission.BLUETOOTH_ADMIN",
      "android.permission.ACCESS_FINE_LOCATION",
      "android.permission.ACCESS_COARSE_LOCATION",
      "android.permission.WRITE_EXTERNAL_STORAGE",
      "android.permission.READ_EXTERNAL_STORAGE"
    ]
  }
}

You can try my working printer app - tester solution (tested with android 15):

Here: PrinterApp.zip

[LodeSmetss]

I am also using Epson TM m30iii and it is working fine (tested network + bluetooth).

Did you add the permissions to app.json?

{
  "name": "PrinterApp",
  "displayName": "PrinterApp",
  "version": "1.0.0",
  "android": {
    "permissions": [
      "android.permission.INTERNET",
      "android.permission.BLUETOOTH_SCAN",
      "android.permission.BLUETOOTH_CONNECT",
      "android.permission.BLUETOOTH",
      "android.permission.BLUETOOTH_ADMIN",
      "android.permission.ACCESS_FINE_LOCATION",
      "android.permission.ACCESS_COARSE_LOCATION",
      "android.permission.WRITE_EXTERNAL_STORAGE",
      "android.permission.READ_EXTERNAL_STORAGE"
    ]
  }
}

You can try my working printer app - tester solution (tested with android 15):

Here: PrinterApp.zip

I tried usong your printing app with android 15, but getting the same error. Did you change anything on the printer after factory settings?

[amazing4u]

@LodeSmetss
Good point! Yes. I disabled Secure Printing, so that it will print immediately without extra confirmation on the device.

You can disable it using the web interface -> Administrative Login (Initial password is inside the printer on the label with the lock symbol) -> Print -> Secure Printing = Disable

But even with Enabled Secure Print i never had the error: "Failed to recover the printer".
In the sdk there is only the suggestion to reset the printer. Did you get it to work with some other software/app? Otherwise i woulg think the device is corrupt...

https://download4.epson.biz/sec_pubs/pos/reference_en/epos_and/ref_epos_sdk_and_en_statuslist_errorstatusandcountermeasures.html