From c194ac738f684e683a64aa3e3ac4846822a1a3ae Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fischer@piller.com>
Date: Fri, 17 May 2019 13:34:57 +0200
Subject: [PATCH] compare crc/lrc against expected_crc , return and flush
 recveive buffer if they don't match

---
 lib/transport/ascii.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/transport/ascii.js b/lib/transport/ascii.js
index 334e07e..a62678d 100644
--- a/lib/transport/ascii.js
+++ b/lib/transport/ascii.js
@@ -63,6 +63,11 @@ Transport.prototype.unwrap = function (data) {
 		stream       : this.stream
 	};
 
+	if (unwrapped.crc != unwrapped.expected_crc) {
+		this.buffer = null;
+		return false;
+	}
+
 	if (typeof this.callback == "function") {
 		if (unwrapped.slaveId != this.callbackSlaveId) return false;