From 10e15f3d5c994a2fd7070b3480a690646c0c83ad Mon Sep 17 00:00:00 2001
From: Eveldee <eveldee0680@live.fr>
Date: Tue, 24 Nov 2020 16:29:46 +0100
Subject: [PATCH] Add QuerySerialNumber command

---
 WaveshareUARTFingerprintSensor/FingerprintSensor.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/WaveshareUARTFingerprintSensor/FingerprintSensor.cs b/WaveshareUARTFingerprintSensor/FingerprintSensor.cs
index 3e11ed7..f59fb2e 100644
--- a/WaveshareUARTFingerprintSensor/FingerprintSensor.cs
+++ b/WaveshareUARTFingerprintSensor/FingerprintSensor.cs
@@ -141,6 +141,13 @@ namespace WaveshareUARTFingerprintSensor
             return true;
         }
 
+        public uint QuerySerialNumber()
+        {
+            (byte first, byte second, byte third) = SendAndReceiveRaw(CommandType.QuerySerialNumber, 0, 0, 0);
+
+            return Utils.Merge(first, second, third);
+        }
+
         public bool TryGetUserCount(out ushort count)
         {
             if (TrySendAndReceive(CommandType.QueryUserCount, 0, 0, 0, out var response, 1000))