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Unity: Add delay after serial connection

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The Arduino will block if sent data too quickly after connection.
Add a new coroutine to force waiting for 1s+ and update the UI
accordingly.

Update some comments throughout.
This commit is contained in:
Teo-CD 2023-12-15 22:07:46 +00:00
parent 4e11af1da0
commit a18c37daa1
1 changed files with 33 additions and 8 deletions
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41
Assets/Scripts/Arduino_Com.cs
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@ -14,6 +14,7 @@ public class Arduino_Com : MonoBehaviour
{
Déconnecté,
Connecté,
Connexion,
Lecture,
Écriture,
Invalide
@ -68,11 +69,21 @@ public class Arduino_Com : MonoBehaviour
return sum;
}
// Core communication function.
// Receives all the data from the cartridge and writes it out to the png file.
// As the computer will probably read the serial data faster than the Arduino
// /and/ the transfer is quite slow (lots of bits, low baudrate), make this a
// coroutine.
// This prevents the whole application freezing up why waiting for data and
// allow presenting visual feedback.
private IEnumerator<WaitUntil> ReceiveSerialData()
{
do
{
// We could use an event instead but as Unity is lagging behind .NET versions,
// it wouldn't be cross-platform.
yield return new WaitUntil(() => _serial.BytesToRead >= 1);
// Read all available data, up to the PageSize.
_readBytes += _serial.Read(_pageBuffer, _readBytes, PageSize - _readBytes);
@ -104,6 +115,7 @@ public class Arduino_Com : MonoBehaviour
_readBytes = 0;
}
} while (_currentPage < PageCount);
// We are done receiving the cart, we don't expect more data to be received so the coroutine can return.
_currentPage = 0;
_state = ArduinoState.Connecté;
@ -222,14 +234,7 @@ public class Arduino_Com : MonoBehaviour
return;
}
// TODO: Wait ~2s for Arduino startup
_arduinoControlButton.text = "Déconnecter";
_cartLoadButton.SetEnabled(true);
// _cartWriteButton.SetEnabled(true); TODO: Not implemented
_arduinoSerialPort.SetEnabled(false);
_state = ArduinoState.Connecté;
StartCoroutine(DoSerialConnection());
}
}
@ -244,4 +249,24 @@ public class Arduino_Com : MonoBehaviour
_state = SerialPort.GetPortNames().Contains(newPort.newValue) ? ArduinoState.Déconnecté : ArduinoState.Invalide;
_arduinoControlButton.SetEnabled(_state != ArduinoState.Invalide);
}
// Update UI during connection and when ready, prevent interacting too quickly.
IEnumerator<WaitForSeconds> DoSerialConnection()
{
_arduinoControlButton.text = "Connexion...";
_arduinoControlButton.SetEnabled(false);
_arduinoSerialPort.SetEnabled(false);
_state = ArduinoState.Connexion;
// Delay enabling transfers because the Arduino is slow to set-up the serial.
yield return new WaitForSeconds(1.5f);
_arduinoControlButton.text = "Déconnecter";
_arduinoControlButton.SetEnabled(true);
_cartLoadButton.SetEnabled(true);
// _cartWriteButton.SetEnabled(true); TODO: Not implemented
_state = ArduinoState.Connecté;
}
}