Eveldee/WaveshareUARTFingerprintSensor
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Add timeout

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Eveldee
2020-11-24 15:28:51 +01:00
parent 65faa1b8e8
commit 9b6e8799b0
1 changed files with 5 additions and 1 deletions
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6
WaveshareUARTFingerprintSensor/FingerprintSensor.cs
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@@ -17,6 +17,7 @@ namespace WaveshareUARTFingerprintSensor
{ {
public const string PrimarySerialPort = "/dev/ttyAMA0"; public const string PrimarySerialPort = "/dev/ttyAMA0";
public const string SecondarySerialPort = "/dev/ttyS0"; public const string SecondarySerialPort = "/dev/ttyS0";
public const int DefaultTimeout = 10_000;
public string PortName { get; } public string PortName { get; }
@@ -68,13 +69,16 @@ namespace WaveshareUARTFingerprintSensor
return checksum; return checksum;
} }
private (byte first, byte second, ResponseType responseType) SendAndReceive(CommandType commandType, byte first, byte second, byte third) private (byte first, byte second, ResponseType responseType) SendAndReceive(CommandType commandType, byte first, byte second, byte third, int timeout = DefaultTimeout)
{ {
// Command packet // Command packet
byte[] buffer = { PacketSeparator, (byte)commandType, first, second, third, 0, 0, PacketSeparator }; byte[] buffer = { PacketSeparator, (byte)commandType, first, second, third, 0, 0, PacketSeparator };
lock (_lock) lock (_lock)
{ {
// Set timeout
_serialPort.WriteTimeout = timeout;
_serialPort.ReadTimeout = timeout;
// Checksum // Checksum
buffer[6] = ComputeChecksum(buffer); buffer[6] = ComputeChecksum(buffer);