解决此demo关闭异步输出功能(//#define ELOG_ASYNC_OUTPUT_ENABLE)，输出日志不完整的问题。

1，初始化时无需对两个信号量做释放操作。
2，修改elog_port_output()函数。
3，修改异步输出线程 void elog_entry(void *para)。

demo/os/cube-freertos/nucleo-g070rb/Components/EasyLogger_Port/elog_port.c

@@ -43,8 +43,6 @@ extern osSemaphoreId_t elog_dma_lockHandle;
 ElogErrCode elog_port_init(void) {
     ElogErrCode result = ELOG_NO_ERR;
 
-    osSemaphoreRelease(elog_dma_lockHandle);
-    osSemaphoreRelease(elog_lockHandle);
     /* add your code here */
 
     return result;
@@ -65,6 +63,7 @@ void elog_port_deinit(void) {
  */
 void elog_port_output(const char *log, size_t size) {
     HAL_UART_Transmit_DMA(&huart2, (uint8_t *) log, size);
+    osSemaphoreAcquire(elog_dma_lockHandle, osWaitForever);
 }
 
 /**
@@ -116,30 +115,28 @@ void elog_async_output_notice(void) {
 
 void elog_entry(void *para) {
     size_t get_log_size = 0;
+#ifdef ELOG_ASYNC_LINE_OUTPUT
     static char poll_get_buf[ELOG_LINE_BUF_SIZE - 4];
-
+#else
-    if (elog_port_init() != ELOG_NO_ERR) {
+    static char poll_get_buf[ELOG_ASYNC_OUTPUT_BUF_SIZE - 4];
-        goto fail;
+#endif
-    }
+
-
+    for(;;)
+    {
+        /* waiting log */
+        osSemaphoreAcquire(elog_asyncHandle, osWaitForever);
+        /* polling gets and outputs the log */
         while (1) {
-        if (osOK ==
+#ifdef ELOG_ASYNC_LINE_OUTPUT
-            osSemaphoreAcquire(elog_asyncHandle, osWaitForever)) {
-            while (1) {
-                if (osOK ==
-                    osSemaphoreAcquire(elog_dma_lockHandle, osWaitForever)) {
             get_log_size = elog_async_get_line_log(poll_get_buf, sizeof(poll_get_buf));
+#else
+            get_log_size = elog_async_get_log(poll_get_buf, sizeof(poll_get_buf));
+#endif
             if (get_log_size) {
                 elog_port_output(poll_get_buf, get_log_size);
             } else {
-                        osSemaphoreRelease(elog_dma_lockHandle);
                 break;
             }
         }
     }
-        }
-    }
-
-    fail:
-    osThreadExit();
 }