diff --git a/APP/peripheral_main.c b/APP/peripheral_main.c
index abdee94..fd0ce50 100644
--- a/APP/peripheral_main.c
+++ b/APP/peripheral_main.c
@@ -59,6 +59,7 @@ void Main_Circulation()
         TMOS_SystemProcess();
         KEY_ProcessLoop();
         MultiTimerYield();
+        BSP_UART3_TxLoop();
     }
 }
 
diff --git a/bsp/inc/bsp_uart.h b/bsp/inc/bsp_uart.h
index 7616859..943e41e 100644
--- a/bsp/inc/bsp_uart.h
+++ b/bsp/inc/bsp_uart.h
@@ -19,6 +19,7 @@ void BSP_UART3_Init(void);
 unsigned int BSP_Uart3_Receive_Data(void *buf, unsigned int len);
 unsigned int BSP_Uart3_Send_Data(const void *buf, unsigned int len);
 void BSP_Shell_Loop(void);
+void BSP_UART3_TxLoop(void);
 
 
 #endif
diff --git a/bsp/src/bsp_ml307r.c b/bsp/src/bsp_ml307r.c
index a3702bd..61dbd5d 100644
--- a/bsp/src/bsp_ml307r.c
+++ b/bsp/src/bsp_ml307r.c
@@ -519,7 +519,7 @@ static int BSP_Module_Connect_CtWing_Handle(at_env_t *e)
     {
         case 0:
             logDebug("create device...\r\n");  
-            e->println(e, "AT+MIPOPEN=0,\"TCP\",\"112.125.89.8\",44679,,1");  // 8.135.10.183,32994
+            e->println(e, "AT+MIPOPEN=0,\"TCP\",\"112.125.89.8\",47766,,1");  // 8.135.10.183,32994
             e->reset_timer(e);
             e->state++;
             break;
diff --git a/bsp/src/bsp_uart.c b/bsp/src/bsp_uart.c
index 93ce8fd..eeaacb7 100644
--- a/bsp/src/bsp_uart.c
+++ b/bsp/src/bsp_uart.c
@@ -55,9 +55,36 @@ unsigned int BSP_Uart3_Send_Data(const void *buf, unsigned int len)
     unsigned int ret;
 
     ret = lwrb_write(&uart3_tx_t, buf, len);
-    UART3_INTCfg(ENABLE, RB_IER_THR_EMPTY);
+    // UART3_INTCfg(ENABLE, RB_IER_THR_EMPTY);
+    // BSP_BlockSleep();
+    BSP_UART3_TxLoop();
+    // BSP_RequestSleep();
     return ret;
 }
+
+
+// https://www.cnblogs.com/iot-fan/p/13439293.html
+// tx process
+// 本查询函数需要扔到主循环不断调用
+void BSP_UART3_TxLoop(void)
+{
+    uint8_t data;
+    while (R8_UART3_TFC < UART_FIFO_SIZE)
+    {
+        // 判断发送软件缓冲区,是否空,如果不空,就一个一个读出来,填到硬件fifo里
+        if (lwrb_get_full(&uart3_tx_t))
+        {
+            lwrb_read(&uart3_tx_t, &data, 1);
+            // 把软件缓冲区的数据填到uart的硬件发送fifo里
+            UART3_SendByte(data);
+        }
+        else
+        {
+            break;
+        }
+    }
+}
+
 /**
  * \brief           Buffer event function
  */
@@ -255,15 +282,15 @@ void UART3_IRQHandler(void)
             }
             break;
         case UART_II_THR_EMPTY: // 发送缓存区空，可继续发送
-            if(lwrb_get_full(&uart3_tx_t))
-            {
-                lwrb_read(&uart3_tx_t, &data, 1);
-                UART3_SendByte(data);
-            }
-            else
-            {
-                UART3_INTCfg(DISABLE, RB_IER_THR_EMPTY);
-            }
+            // if(lwrb_get_full(&uart3_tx_t))
+            // {
+            //     lwrb_read(&uart3_tx_t, &data, 1);
+            //     UART3_SendByte(data);
+            // }
+            // else
+            // {
+            //     UART3_INTCfg(DISABLE, RB_IER_THR_EMPTY);
+            // }
 
             break;