From 085e5cea930b8b0d43ec702c43361706e779688c Mon Sep 17 00:00:00 2001
From: Gatsby Van <mail.gatsby.icu>
Date: Wed, 31 Jan 2024 10:17:43 +0800
Subject: [PATCH] *bugfix: avoid unnecessary reconfiguration

---
 df_datalink_sp/src/systembus/systembus.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/df_datalink_sp/src/systembus/systembus.c b/df_datalink_sp/src/systembus/systembus.c
index 829711b..38c5397 100644
--- a/df_datalink_sp/src/systembus/systembus.c
+++ b/df_datalink_sp/src/systembus/systembus.c
@@ -349,14 +349,16 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 		PHY_INST *phyRef = linkInstPtr->config.phyInstPtr;
 		TMC_INST *tmcRef = linkInstPtr->config.tmcInstPtr;
 		
-		if (data[WD_MODE_CMD] == MODE_CMD_HEAD) 
+		if (data[WD_MODE_CMD] == MODE_CMD_HEAD 
+			&& L2_GetNodeType(linkInstPtr) != L2_NODE_HEAD) 
 		{
 			// head node config
 			linkConfig.myType = L2_NODE_HEAD;
 			linkConfig.myId = 1;
 			Linklayer_Reconfig(linkInstPtr, &linkConfig);
 		}
-		else if (data[WD_MODE_CMD] == MODE_CMD_MEMBER) 
+		else if (data[WD_MODE_CMD] == MODE_CMD_MEMBER 
+			&& L2_GetNodeType(linkInstPtr) != L2_NODE_MEMBER) 
 		{
 			// member node config
 			linkConfig.myType = L2_NODE_MEMBER;