From 650f06aa1943d439ac049f6bc276b216999e6a56 Mon Sep 17 00:00:00 2001
From: guochuangjian <465469791@qq.com>
Date: Wed, 1 Aug 2018 00:40:58 +0800
Subject: [PATCH] fix usRcvBufferPos == MB_SER_PDU_SIZE_MAX assert

---
 components/net/freemodbus/modbus/rtu/mbrtu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/net/freemodbus/modbus/rtu/mbrtu.c b/components/net/freemodbus/modbus/rtu/mbrtu.c
index c023c9265..ae5e0325c 100644
--- a/components/net/freemodbus/modbus/rtu/mbrtu.c
+++ b/components/net/freemodbus/modbus/rtu/mbrtu.c
@@ -153,7 +153,7 @@ eMBRTUReceive( UCHAR * pucRcvAddress, UCHAR ** pucFrame, USHORT * pusLength )
     eMBErrorCode    eStatus = MB_ENOERR;
 
     ENTER_CRITICAL_SECTION(  );
-    assert_param( usRcvBufferPos < MB_SER_PDU_SIZE_MAX );
+    assert_param( usRcvBufferPos <= MB_SER_PDU_SIZE_MAX );
 
     /* Length and CRC check */
     if( ( usRcvBufferPos >= MB_SER_PDU_SIZE_MIN )