diff --git a/network/serial_network/HAL/NATIVE/serial_network_hal.c b/network/serial_network/HAL/NATIVE/serial_network_hal.c
index ccbb9be75..5976b2de4 100644
--- a/network/serial_network/HAL/NATIVE/serial_network_hal.c
+++ b/network/serial_network/HAL/NATIVE/serial_network_hal.c
@@ -206,11 +206,13 @@ void SerialHAL_Init(uint8_t *rx_buffer, uint32_t buffer_size)
     Sleep(2);
 #else
     serial_port = open(portname, O_RDWR | O_NOCTTY | O_NONBLOCK);
-    if (serial_port < 0)
+    while (serial_port < 0)
     {
         printf("Error opening serial port\n");
         printf("Error code: %d\n", errno);
-        LUOS_ASSERT(0);
+        printf("Please connect serial device\n");
+        sleep(1);
+        serial_port = open(portname, O_RDWR | O_NOCTTY | O_NONBLOCK);
     }
     struct termios tty;
     memset(&tty, 0, sizeof(tty));
@@ -344,12 +346,16 @@ void SerialHAL_Send(uint8_t *data, uint16_t size)
         // Wait for the buffer to be empty
         usleep(1000);
         ioctl(serial_port, TIOCOUTQ, &bytes_in_buffer);
-        bytesWritten = write(serial_port, &data[bytesWritten], size - bytesWritten);
+        bytesWritten = write(serial_port, &data[totalBytesWritten], size - totalBytesWritten);
         if (bytesWritten < 0)
         {
             printf("Error writing to serial port\n");
             close(serial_port);
-            LUOS_ASSERT(0);
+            bytesWritten      = 0;
+            size              = 0;
+            totalBytesWritten = 0;
+            ioctl(serial_port, TIOCOUTQ, &bytes_in_buffer);
+            break;
         }
         else
         {