update serialPortService.js

services/serialPortService.js

@@ -21,7 +21,19 @@ async function serialPortList(req, res) {
           const buff = Buffer.allocUnsafe(4);
           buff.write(`#0${req.params.id}$`);
 
+          serialPort.on('open', () => {
+            console.log('Serial port opened');
             serialPort.write(buff)
+          });
+
+          serialPort.on('data', (data) => {
+            console.log('Received data:', data);
+            // Process the response to check if the box was opened successfully
+          });
+
+          serialPort.on('error', (error) => {
+            console.error('Error:', error);
+          });
         }
       })
       .catch((error) => {