diff --git a/Spoolend/Spoolend.c b/Spoolend/Spoolend.c
index 07a1d13..2b73fae 100644
--- a/Spoolend/Spoolend.c
+++ b/Spoolend/Spoolend.c
@@ -92,9 +92,37 @@ static int check_RS485_2(char *_pBuffer, uint32_t _iSize)
 	return _iSize;
 }
 
+void Myprint_Init(void)
+{
+    TUartUserData *ptUartUserData = UART_userdata_init(1, 115200, 4096);
+    g_ptRS485_2 = rd_ComCreate(NULL, NULL, RS485_2_Send, ptUartUserData->m_buf_size, ptUartUserData);
+    UART_IT_init(g_ptRS485_2);
+}
+
+int Myprint_putchar(uint8_t ch)
+{
+    char tx_buf[2];
+
+    if (ch == '\n') 
+    {
+        // 遇到换行，发送 \r\n
+        tx_buf[0] = '\r';
+        tx_buf[1] = '\n';
+        if (rd_ComSend(g_ptRS485_2, tx_buf, 2) < 0) return EOF;
+        return 2;
+    } 
+    else 
+    {
+        // 普通字符
+        tx_buf[0] = ch;
+        if (rd_ComSend(g_ptRS485_2, tx_buf, 1) < 0) return EOF;
+        return 1;
+    }
+}
+
 void SpoolendInit(void)
 {
-    TUartUserData *ptUartUserData = UART_userdata_init(0, -1, 512);
+    TUartUserData *ptUartUserData = UART_userdata_init(0, 115200, 512);
     g_ptRS485_1 = rd_ComCreate(check_RS485_1, NULL, RS485_1_Send, ptUartUserData->m_buf_size, ptUartUserData);
     UART_IT_init(g_ptRS485_1);
 //    TUartUserData *ptUartUserData1 = UART_userdata_init(0, 115200, 512);