From 9478e5cd9cb69fa012039b9ac742df96033f0459 Mon Sep 17 00:00:00 2001
From: Maximilian Bachmeier <maximilian.bachmeier@evopro-ag.de>
Date: Tue, 3 Dec 2019 10:37:12 +0100
Subject: [PATCH] Add error description to exception message when read fails

---
 Sharp7.Rx/Sharp7Connector.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Sharp7.Rx/Sharp7Connector.cs b/Sharp7.Rx/Sharp7Connector.cs
index 76009bd..34a9965 100644
--- a/Sharp7.Rx/Sharp7Connector.cs
+++ b/Sharp7.Rx/Sharp7Connector.cs
@@ -185,7 +185,8 @@ namespace Sharp7.Rx
             if (result != 0)
             {
                 await EvaluateErrorCode(result);
-                throw new InvalidOperationException($"Error reading {operand}{dBNr}:{startByteAddress}->{bytesToRead}");
+                var errorText = this.sharp7.ErrorText(result);
+                throw new InvalidOperationException($"Error reading {operand}{dBNr}:{startByteAddress}->{bytesToRead} ({errorText})");
             }
 
             var retBuffer = new byte[bytesToRead];