From 135a8f8165a701bda027f87a1e336723e397cbb2 Mon Sep 17 00:00:00 2001
From: Floris Romeijn <floris.romeijn@evalan.com>
Date: Thu, 14 Dec 2023 14:53:18 +0100
Subject: [PATCH] fix for closing tcp connections and watchdog timeout

Signed-off-by: aleks <aleks@espressif.com>
---
 freemodbus/tcp_master/port/port_tcp_master.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/freemodbus/tcp_master/port/port_tcp_master.c b/freemodbus/tcp_master/port/port_tcp_master.c
index f0d3367..7e2d2f7 100644
--- a/freemodbus/tcp_master/port/port_tcp_master.c
+++ b/freemodbus/tcp_master/port/port_tcp_master.c
@@ -236,7 +236,6 @@ static BOOL xMBTCPPortMasterCloseConnection(MbSlaveInfo_t *pxInfo)
 static void xMBTCPPortMasterShutdown(void)
 {
     xSemaphoreGive(xShutdownSema);
-    vTaskDelete(NULL);
     xMbPortConfig.xMbTcpTaskHandle = NULL;
 
     for (USHORT ucCnt = 0; ucCnt < MB_TCP_PORT_MAX_CONN; ucCnt++) {
@@ -251,6 +250,7 @@ static void xMBTCPPortMasterShutdown(void)
         }
     }
     free(xMbPortConfig.pxMbSlaveInfo);
+    vTaskDelete(NULL);
 }
 
 void vMBTCPPortMasterSetNetOpt(void *pvNetIf, eMBPortIpVer xIpVersion, eMBPortProto xProto)
@@ -754,6 +754,7 @@ static void vMBTCPPortMasterTask(void *pvParameters)
                     break;
                 }
                 putchar(ucDot);
+		vTaskDelay(pdMS_TO_TICKS(100)); /* if we don't yield we run the risk of hogging CPU */
                 xErr = xMBTCPPortMasterConnect(pxInfo);
                 switch(xErr)
                 {