Eveldee/WaveshareUARTFingerprintSensor
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Update ReadData

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Now use a buffer and check how much bytes has been read
Don't use a sleep anymore
This commit is contained in:
Eveldee
2020-12-01 17:01:08 +01:00
parent 4889aecc47
commit 70e96a5055
1 changed files with 7 additions and 4 deletions
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11
WaveshareUARTFingerprintSensor/FingerprintSensor.cs
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@@ -20,6 +20,7 @@ namespace WaveshareUARTFingerprintSensor
public const string SecondarySerialPort = "/dev/ttyS0"; public const string SecondarySerialPort = "/dev/ttyS0";
public const int DefaultTimeout = 10_000; public const int DefaultTimeout = 10_000;
public const int MaxUserID = 0xFFF; public const int MaxUserID = 0xFFF;
public const int DataBufferSize = 4095;
public event WakedEventHandler Waked; public event WakedEventHandler Waked;
public delegate void WakedEventHandler(FingerprintSensor sender); public delegate void WakedEventHandler(FingerprintSensor sender);
@@ -166,9 +167,6 @@ namespace WaveshareUARTFingerprintSensor
private byte[] ReadData(int length) private byte[] ReadData(int length)
{ {
// Needed to work
Thread.Sleep(150);
byte first = (byte)_serialPort.ReadByte(); byte first = (byte)_serialPort.ReadByte();
if (first != PacketSeparator) if (first != PacketSeparator)
@@ -178,7 +176,12 @@ namespace WaveshareUARTFingerprintSensor
byte[] data = new byte[length]; byte[] data = new byte[length];
_serialPort.Read(data, 0, length); int offset = 0;
do
{
int toRead = length - offset > DataBufferSize ? DataBufferSize : length - offset;
offset += _serialPort.Read(data, offset, toRead);
} while (offset < length);
byte checksum = (byte)_serialPort.ReadByte(); byte checksum = (byte)_serialPort.ReadByte();
byte separator = (byte)_serialPort.ReadByte(); byte separator = (byte)_serialPort.ReadByte();