diff --git a/config.py b/config.py
index 4e43501..7ae042c 100644
--- a/config.py
+++ b/config.py
@@ -1,5 +1,49 @@
 from micropython import const
 
+
+from machine import Pin, SPI
+from time import sleep_ms
+
+# ----------------------------epaper配置-------------------------------------------------
+
+# SPI引脚配置
+sck = Pin(47)   # SCK pin47
+miso = Pin(46)  # MISO pin46
+mosi = Pin(21)  # SDI/MOSI pin21
+
+# 控制引脚配置
+dc = Pin(40)    # D/C pin40
+cs = Pin(45)    # CS pin45
+rst = Pin(41)   # RES pin41
+busy = Pin(42)  # BUSY pin42
+
+# 按钮引脚配置
+btn1 = Pin(46, Pin.IN, Pin.PULL_UP)  # 按钮1连接到引脚46
+btn2 = Pin(20, Pin.IN, Pin.PULL_UP)  # 按钮2连接到引脚20
+btn3 = Pin(12, Pin.IN, Pin.PULL_UP)  # 按钮3连接到引脚12
+btn4 = Pin(11, Pin.IN, Pin.PULL_UP)  # 按钮4连接到引脚11
+
+# 蜂鸣器引脚配置
+buzzer_pin = 14  # 蜂鸣器连接到引脚14
+
+# epaper屏幕尺寸
+WIDTH = 400
+HEIGHT = 300
+
+# 初始化 SPI2（HSPI/VSPI 视固件而定）
+spi = SPI(2, baudrate=2_000_000, polarity=0, phase=0,
+          sck=sck, miso=miso, mosi=mosi)
+
+# 如果你板子上真有单独的 EPD 电源控制 FET，就按实际 IO 改；
+# 若只是直接 3.3V 供电，可以把下面这一段去掉。
+epd_power = Pin(2, Pin.OUT)
+epd_power.on()
+sleep_ms(10)
+
+# ----------------------------epaper配置-------------------------------------------------
+
+
+
 class BoardConfig:
     def __init__(self, name):
         self.name = name
diff --git a/epaper_diver/epaper4in2.py b/epaper_diver/epaper4in2.py
new file mode 100644
index 0000000..675b324
--- /dev/null
+++ b/epaper_diver/epaper4in2.py
@@ -0,0 +1,312 @@
+"""
+MicroPython Good Display GDEQ042T81 (GDEY042T81)
+
+Based on MicroPython Waveshare 4.2" Black/White GDEW042T2 e-paper display driver
+https://github.com/mcauser/micropython-waveshare-epaper
+
+licensed under the MIT License
+Copyright (c) 2017 Waveshare
+Copyright (c) 2018 Mike Causer
+"""
+
+"""
+MicroPython Good Display GDEQ042T81 (GDEY042T81) e-paper display driver
+
+MIT License
+Copyright (c) 2024 Martin Maly
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+"""
+
+from micropython import const
+from time import sleep_ms
+try:
+    from buzzer import system_buzzer
+except ImportError:
+    system_buzzer = None
+
+# Display resolution
+EPD_WIDTH  = const(400)
+EPD_HEIGHT = const(300)
+BUSY = const(0)  # 0=busy, 1=idle
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+        self.powered = False
+        self.init_done = False
+        self.hibernate = True
+        self.use_fast_update = True
+        # 添加刷新计数器，用于控制全屏刷新频率
+        self.refresh_count = 0
+        # 每N次局部刷新后执行一次全屏刷新，防止残影积累
+        self.partial_refresh_limit = 5
+        # 强制全屏刷新标志
+        self.force_full_refresh = False
+
+    def _command(self, command, data=None):
+        self.dc(0)
+        self.cs(0)
+        self.spi.write(bytearray([command]))
+        self.cs(1)
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc(1)
+        self.cs(0)
+        self.spi.write(data)
+        self.cs(1)
+        
+    def _ndata(self, data):
+        self._data(bytearray([data]))
+        
+    def pwr_on(self):
+        if self.powered == False:
+            self._command(0x22, b'\xe0')
+            self._command(0x20)
+            self.wait_until_idle()
+            self.powered = True
+
+    def pwr_off(self):
+        if self.powered == True:
+            self._command(0x22, b'\x83')
+            self._command(0x20)
+            self.wait_until_idle()
+            self.powered = False
+
+    #set partial
+    def set_partial(self, x, y, w, h):
+        self._command(0x11,b'\x03')
+        self._command(0x44)
+        self._ndata(x // 8)
+        self._ndata((x + w - 1) // 8)
+        self._command(0x45)
+        self._ndata(y % 256)        
+        self._ndata(y // 256)
+        self._ndata((y+h-1) % 256)
+        self._ndata((y+h-1) // 256)
+        self._command(0x4E)
+        self._ndata(x // 8)
+        self._command(0x4F)
+        self._ndata(y % 256)        
+        self._ndata(y // 256)
+
+    def init(self):
+        if self.hibernate==True:
+            self.reset()
+        sleep_ms(100)
+        #self.wait_until_idle()
+        self._command(const(0x12)) #SWRESET
+        self.wait_until_idle()
+        
+        # 优化驱动初始化参数，确保与GDEY042T81规格匹配
+        self._command(0x01,b'\x2B\x01\x00') #MUX 设置
+        self._command(0x21,b'\x40\x00')      # 显示更新控制
+        self._command(0x3C,b'\x05')         # 边界波形控制，减少残影
+        self._command(0x18,b'\x80')         # 读取内部温度传感器
+        self._command(0x0C,b'\x8B\x00\x00') # 设置开始和结束阶段，优化刷新
+        
+        self.set_partial(0, 0, self.width, self.height)
+        self.init_done = True
+
+    def wait_until_idle(self):
+        while self.busy.value() == BUSY:
+            sleep_ms(100)
+            print("等待墨水屏空闲")
+
+    def reset(self):
+        self.rst(0)
+        sleep_ms(200)
+        self.rst(1)
+        sleep_ms(200)
+
+    def update_full(self):
+        #update Full
+        print("执行全屏更新")
+        self._command(0x21,b'\x40\x00')
+        if self.use_fast_update == False:
+            self._command(0x22,b'\xf7')
+        else:
+            self._command(0x1A, b'\x64')  # 快速刷新设置
+            self._command(0x22,b'\xd7')
+        self._command(0x20)
+        self.wait_until_idle()
+        print("更新完成", self.busy.value())
+
+    # 添加专门的全屏刷新方法，用于清除残影
+    def clear_screen(self, double_refresh=True):
+        """执行全屏刷新以清除残影
+        
+        参数:
+            double_refresh: 是否执行两次刷新以彻底清除残影，默认为True
+        """
+        if double_refresh:
+            print("执行双次全屏刷新以彻底清除残影")
+        else:
+            print("执行单次全屏刷新以清除残影")
+            
+        # 创建全白缓冲区
+        white_buffer = bytearray(self.width * self.height // 8)
+        for i in range(len(white_buffer)):
+            white_buffer[i] = 0xFF  # 全白
+            
+        # 先写入全白数据
+        self.set_partial(0, 0, self.width, self.height)
+        self.write_image(0x24, white_buffer, True, True)
+        
+        # 执行第一次全屏刷新
+        self._command(0x21,b'\x40\x00')
+        self._command(0x22,b'\xf7')  # 使用完整刷新模式
+        self._command(0x20)
+        self.wait_until_idle()
+        
+        # 如果启用双次刷新，再执行一次
+        if double_refresh:
+            print("执行第二次全屏刷新")
+            self._command(0x21,b'\x40\x00')
+            self._command(0x22,b'\xf7')  # 使用完整刷新模式
+            self._command(0x20)
+            self.wait_until_idle()
+        
+        # 重置刷新计数器
+        self.refresh_count = 0
+        self.force_full_refresh = False
+        print("全屏刷新完成")
+
+    def write_image(self, command, bitmap, mirror_x, mirror_y):
+        sleep_ms(1)
+        h = self.height
+        w = self.width
+        bpl = w // 8 # bytes per line
+        
+        self._command(command)
+        for i in range(0, h):
+            for j in range(0, bpl):
+                idx = ((bpl-j-1) if mirror_x else j) + ((h-i-1) if mirror_y else i) * bpl
+                self._ndata(bitmap[idx])
+                
+    def write_value(self, command, value):
+        sleep_ms(1)
+        h = self.height
+        w = self.width
+        bpl = w // 8 # bytes per line
+        
+        self._command(command)
+        for i in range(0, h):
+            for j in range(0, bpl):
+                self._ndata(value)
+
+    # 修改显示方法，添加刷新控制逻辑
+    def display_frame(self, frame_buffer, partial=False, x=0, y=0, w=None, h=None, global_refresh=False):
+        """显示帧缓冲区内容
+        
+        参数:
+            frame_buffer: 要显示的帧缓冲区数据
+            partial: 是否使用局部刷新模式，默认为False
+            x: 局部刷新的起始X坐标，默认为0
+            y: 局部刷新的起始Y坐标，默认为0
+            w: 局部刷新的宽度，默认为全屏宽度
+            h: 局部刷新的高度，默认为全屏高度
+            global_refresh: 是否使用全局刷新模式，默认为False
+        """
+        print("显示帧缓冲区")
+        if self.init_done==False:
+            self.init()
+
+        # 如果未指定宽高，则使用全屏
+        if w is None:
+            w = self.width
+        if h is None:
+            h = self.height
+            
+        # 检查是否需要强制全屏刷新
+        need_clear_screen = self.force_full_refresh or self.refresh_count >= self.partial_refresh_limit
+        
+        # 如果使用全局刷新模式，则设置全屏刷新区域
+        if global_refresh:
+            self.set_partial(0, 0, self.width, self.height)
+        elif need_clear_screen:
+            self.clear_screen()
+            # 设置局部刷新区域
+            self.set_partial(x, y, w, h)
+        else:
+            # 设置局部刷新区域
+            self.set_partial(x, y, w, h)
+        
+        # 写入图像数据
+        self.write_image(0x24, frame_buffer, True, True)
+
+        # 播放等待音效 (异步)
+        if system_buzzer:
+            system_buzzer.play_process_async()
+
+        # 执行刷新
+        if global_refresh:
+            # 全局刷新模式
+            print("执行全局刷新模式")
+            self._command(0x21,b'\x40\x00')
+            self._command(0x22,b'\xf7')  # 使用完整刷新模式
+            self._command(0x20)
+            self.wait_until_idle()
+            self.refresh_count = 0
+            print("全局刷新完成，重置计数器")
+        elif need_clear_screen:
+            # 已经通过clear_screen()执行了刷新，这里不需要再次刷新
+            print("已通过clear_screen完成全屏刷新，跳过重复刷新")
+            self.refresh_count = 0
+        elif partial and not self.force_full_refresh and self.refresh_count < self.partial_refresh_limit:
+            # 局部刷新模式
+            print("执行局部刷新模式")
+            self._command(0x21,b'\x40\x00')
+            self._command(0x1A, b'\x64')  # 快速刷新设置
+            self._command(0x22,b'\xd7')  # 局部刷新命令
+            self._command(0x20)
+            self.wait_until_idle()
+            self.refresh_count += 1
+            print(f"局部刷新完成，刷新计数: {self.refresh_count}/{self.partial_refresh_limit}")
+        else:
+            # 全屏刷新模式
+            print("执行全屏刷新模式")
+            self.update_full()
+            self.refresh_count = 0
+            print("全屏刷新完成，重置计数器")
+
+    # 添加强制全屏刷新的方法
+    def force_refresh(self):
+        """强制执行下一次全屏刷新，清除所有残影"""
+        self.force_full_refresh = True
+        print("已设置强制全屏刷新标志")
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self.pwr_off()
+        self._command(0x10, b'\x01')
+        self.init_done = False
+        self.hibernate = True
\ No newline at end of file