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Improve USB disconnection handling and add payload length validation for USB frames

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This commit is contained in:
just_stuff_tm
2026-03-02 03:24:19 -05:00
committed by just-stuff-tm
parent 3542adad1d
commit 3cec3dc233
2 changed files with 13 additions and 2 deletions
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lib/services/usb_serial_frame_codec.dart
+7
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@@ -6,6 +6,13 @@ const int usbSerialHeaderLength = 3;
const int usbSerialMaxPayloadLength = 172;
Uint8List wrapUsbSerialTxFrame(Uint8List payload) {
if (payload.length > usbSerialMaxPayloadLength) {
throw ArgumentError.value(
payload.length,
'payload.length',
'USB serial payload exceeds $usbSerialMaxPayloadLength bytes',
);
}
final packet = Uint8List(usbSerialHeaderLength + payload.length);
packet[0] = usbSerialTxFrameStart;
packet[1] = payload.length & 0xff;