diff --git a/Inc/LoggerToSerialPort.h b/Inc/LoggerToSerialPort.h
index 378f8e7..3f460d1 100644
--- a/Inc/LoggerToSerialPort.h
+++ b/Inc/LoggerToSerialPort.h
@@ -35,6 +35,8 @@ typedef struct {
     uint8_t bufLoggerNames[MAX_COUNT_BUF_LOG][MAX_LEN_BUF_NAME_LOG];
     uint8_t countBufLoggerNames;
 
+    osMutexId_t access;
+
     struct {
         osThreadId_t id;
         uint32_t stack[384];
diff --git a/Src/LoggerToSerialPort.c b/Src/LoggerToSerialPort.c
index e2de63d..696a648 100644
--- a/Src/LoggerToSerialPort.c
+++ b/Src/LoggerToSerialPort.c
@@ -57,8 +57,9 @@ static void LoggerToSerialPort_TimeToString(time_t timestamp, char *strbuf) {
     asctime_r(&timestampTM, strbuf);
 }
 
-static void LoggerToSerialPort_PrintLegend(
+static uint32_t LoggerToSerialPort_PrintLegend(
         tLoggerToSerialPort *env,
+        char *outStr[],
         char *authorStatic,
         const uint8_t authorLen,
         eLoggerLevel loglevel
@@ -113,9 +114,12 @@ static void LoggerToSerialPort_PrintLegend(
     if (env->flags)
         vAsciiStringAdd(str, &strLen, ": ", 2);
 
-    SerialPortTransmit(env->serialPortIo_VIRT, (uint8_t *) str, strLen, env->timeout);
+//    SerialPortTransmit(env->serialPortIo_VIRT, (uint8_t *) str, strLen, env->timeout);
+    *outStr = str;
 
     env->open = true;
+
+    return strLen;
 }
 
 static void LoggerToSerialPort_Logging(
@@ -136,19 +140,30 @@ static void LoggerToSerialPort_Logging(
 //        env->timeout = 0;
 //    }
 
-    if (!env->open) {
-        LoggerToSerialPort_PrintLegend(env, authorStatic, authorLen, loglevel);
-    }
+    char *outStr = NULL;
+    uint32_t lenStr;
 
-    //выводим сообщение
-    SerialPortTransmit(env->serialPortIo_VIRT, (uint8_t *) msg, msgLen, env->timeout);
+//    if (!env->open) {
+    lenStr = LoggerToSerialPort_PrintLegend(env, &outStr, authorStatic, authorLen, loglevel);
+//    }
 
-    if (complete) {
-        //переводим строку
-        SerialPortTransmit(env->serialPortIo_VIRT, (uint8_t *) "\r\n", 2, env->timeout);
-        env->open = false;
-    } else {
-        env->open = true;
+    if (osMutexAcquire(env->access, env->timeout) == osOK) {
+
+        //выводим сообщение
+        if (outStr != NULL) {
+            SerialPortTransmit(env->serialPortIo_VIRT, (uint8_t *) outStr, lenStr, env->timeout);
+        }
+
+        SerialPortTransmit(env->serialPortIo_VIRT, (uint8_t *) msg, msgLen, env->timeout);
+
+        if (complete) {
+            //переводим строку
+            SerialPortTransmit(env->serialPortIo_VIRT, (uint8_t *) "\r\n", 2, env->timeout);
+            //           env->open = false;
+        } else {
+            //           env->open = true;
+        }
+        osMutexRelease(env->access);
     }
 
 //    env->timeout = timeoutLocal;
@@ -175,6 +190,9 @@ void LoggerToSerialPort_Init(
     env->rtc = rtc;
     env->flags = flags;
     env->timeoutTransmittedLog = timeoutTransmittedLog;
+
+    env->access = osMutexNew(NULL);
+
 //    env->showDate = showDate;
 //    env->showTime = showTime;
 //    env->showLoglevel = showLoglevel;