diff --git a/.settings/org.eclipse.core.resources.prefs b/.settings/org.eclipse.core.resources.prefs
index 7ff0273..f27d23b 100644
--- a/.settings/org.eclipse.core.resources.prefs
+++ b/.settings/org.eclipse.core.resources.prefs
@@ -1,2 +1,15 @@
 eclipse.preferences.version=1
+encoding//.settings/org.eclipse.core.resources.prefs=GBK
+encoding//Debug/debug.h=GBK
+encoding//Peripheral/inc/ch32v00x.h=GBK
+encoding//Peripheral/inc/ch32v00x_spi.h=GBK
+encoding//Peripheral/src/ch32v00x_spi.c=GBK
+encoding//Startup/startup_ch32v00x.S=GBK
+encoding//User/ch32v00x_conf.h=GBK
+encoding//User/ch32v00x_it.c=GBK
+encoding//User/ch32v00x_it.h=GBK
 encoding//User/main.c=GBK
+encoding//User/spi.c=GBK
+encoding//User/spi.h=GBK
+encoding//User/system_ch32v00x.c=GBK
+encoding//User/system_ch32v00x.h=GBK
diff --git a/User/main.c b/User/main.c
index a0e6b3f..4ebd769 100644
--- a/User/main.c
+++ b/User/main.c
@@ -1,70 +1,8 @@
-/********************************** (C) COPYRIGHT *******************************
- * File Name          : main.c
- * Author             : WCH
- * Version            : V1.0.0
- * Date               : 2023/12/25
- * Description        : Main program body.
- *********************************************************************************
- * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
- * Attention: This software (modified or not) and binary are used for 
- * microcontroller manufactured by Nanjing Qinheng Microelectronics.
- *******************************************************************************/
-
-/*
- *@Note
- *Multiprocessor communication mode routine:
- *Master:USART1_Tx(PD5)\USART1_Rx(PD6).
- *This routine demonstrates that USART1 receives the data sent by CH341 and inverts
- *it and sends it (baud rate 115200).
- *
- *Hardware connection:PD5 -- Rx
- *                     PD6 -- Tx
- *
- */
-
 #include "debug.h"
 
 
-/* Global define */
 
 
-/* Global Variable */
-vu8 val;
-
-/*********************************************************************
- * @fn      USARTx_CFG
- *
- * @brief   Initializes the USART2 & USART3 peripheral.
- *
- * @return  none
- */
-void USARTx_CFG(void)
-{
-    GPIO_InitTypeDef  GPIO_InitStructure = {0};
-    USART_InitTypeDef USART_InitStructure = {0};
-
-    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_USART1, ENABLE);
-
-    /* USART1 TX-->D.5   RX-->D.6 */
-    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
-    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
-    GPIO_Init(GPIOD, &GPIO_InitStructure);
-    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
-    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
-    GPIO_Init(GPIOD, &GPIO_InitStructure);
-
-    USART_InitStructure.USART_BaudRate = 115200;
-    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
-    USART_InitStructure.USART_StopBits = USART_StopBits_1;
-    USART_InitStructure.USART_Parity = USART_Parity_No;
-    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
-    USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
-
-    USART_Init(USART1, &USART_InitStructure);
-    USART_Cmd(USART1, ENABLE);
-}
-
 /*********************************************************************
  * @fn      main
  *
@@ -94,8 +32,7 @@ int main(void)
         {
             /* waiting for receiving finish */
         }
-        val = (USART_ReceiveData(USART1));
-        USART_SendData(USART1, ~val);
+
         while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET)
         {
             /* waiting for sending finish */
diff --git a/User/spi.c b/User/spi.c
new file mode 100644
index 0000000..b6d571a
--- /dev/null
+++ b/User/spi.c
@@ -0,0 +1,10 @@
+/*
+ * spi.c
+ *
+ *  Created on: Apr 8, 2024
+ *      Author: NikmaOS-W
+ */
+
+
+
+
diff --git a/User/spi.h b/User/spi.h
new file mode 100644
index 0000000..6b26cf7
--- /dev/null
+++ b/User/spi.h
@@ -0,0 +1,16 @@
+/*
+ * spi.h
+ *
+ *  Created on: Apr 8, 2024
+ *      Author: NikmaOS-W
+ */
+
+#ifndef USER_SPI_H_
+#define USER_SPI_H_
+SPI_InitTypeDef DAC_spi;
+
+void DAC_spi_Init
+
+
+
+#endif /* USER_SPI_H_ */