From 9de08898025ea975d90b2ffe538a9c89ce35d1ff Mon Sep 17 00:00:00 2001
From: andreas karlsson <andreas.karlsson@rt-labs.com>
Date: Wed, 2 Jun 2021 20:18:25 +0200
Subject: [PATCH] Adjust size of ec_EOE_t to max mailbox size

fix #514
---
 soem/ethercateoe.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/soem/ethercateoe.h b/soem/ethercateoe.h
index 930403a..67ef329 100644
--- a/soem/ethercateoe.h
+++ b/soem/ethercateoe.h
@@ -16,10 +16,12 @@ extern "C"
 {
 #endif
 
-#include "ethercattype.h" 
+#include "ethercat.h"
 
-/* use maximum size for EOE mailbox data */
-#define EC_MAXEOEDATA EC_MAXMBX
+/* use maximum size for EOE mailbox data - mbxheader and 2x frameinfo */
+#define EC_MAXEOEDATA (EC_MAXMBX - (sizeof(ec_mbxheadert) +\
+                                    sizeof(uint16_t) +\
+                                    sizeof(uint16_t)))
 
 /** DNS length according to ETG 1000.6 */
 #define EOE_DNS_NAME_LENGTH  32