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add exception handling

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This commit is contained in:
Pritimay Sarkar
2024-02-29 10:14:16 +05:30
parent 4272e36385
commit 95533aab0d
1 changed files with 36 additions and 20 deletions
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56
app/src/main/java/com/example/hpostesting/presentation/testRight/UsbService.kt
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@@ -33,32 +33,48 @@ class UsbService : Service() {
var bus: UsbServiceListener? = null var bus: UsbServiceListener? = null
fun connect(driver: UsbSerialDriver, connection: UsbDeviceConnection) { fun connect(driver: UsbSerialDriver, connection: UsbDeviceConnection) {
mPort = driver.ports[0] // Most devices have just one port (port 0) try {
mPort.open(connection) mPort = driver.ports[0]
mPort.setParameters(9600, 8, UsbSerialPort.STOPBITS_1, UsbSerialPort.PARITY_NONE) mPort.open(connection)
isUsbConnected = true mPort.setParameters(9600, 8, UsbSerialPort.STOPBITS_1, UsbSerialPort.PARITY_NONE)
Log.d(TAG, "My Usb Connected ${mPort.driver}") isUsbConnected = true
Log.d(TAG, "My Usb Connected ${mPort.driver}")
val usbIoManager = SerialInputOutputManager(mPort, val usbIoManager = SerialInputOutputManager(mPort,
object : SerialInputOutputManager.Listener { object : SerialInputOutputManager.Listener {
override fun onNewData(data: ByteArray?) { override fun onNewData(data: ByteArray?) {
listener?.onUsbRead(data) listener?.onUsbRead(data)
} }
override fun onRunError(e: Exception?) { override fun onRunError(e: Exception?) {
Log.e(TAG, "onRunError() called inside eventDrivenWrite()") Log.e(TAG, "onRunError() called inside eventDrivenWrite()")
listener?.onUsbError(e) listener?.onUsbError(e)
} }
})
}) usbIoManager.start()
usbIoManager.start(); } catch (ioException: IOException) {
Log.e(TAG, "IOException during USB connection: ${ioException.message}", ioException)
listener?.onUsbError(ioException)
} catch (e: Exception) {
Log.e(TAG, "Error connecting USB: ${e.message}", e)
listener?.onUsbError(e)
}
} }
fun disconnect() { fun disconnect() {
if (isUsbConnected) { try {
mPort.close() if (isUsbConnected) {
isUsbConnected = false; mPort.close()
Log.d(TAG, "My Usb disconnected:: ${mPort.driver}") isUsbConnected = false
Log.d(TAG, "USB Port closed successfully:: ${mPort.driver}")
} else {
Log.d(TAG, "USB Port is not connected")
}
} catch (e: IOException) {
Log.e(TAG, "Error closing USB Port: ${e.message}", e)
} catch (e: Exception) {
Log.e(TAG, "An unexpected error occurred: ${e.message}", e)
} }
} }