diff --git a/apps/chrg/project.uvprojx b/apps/chrg/project.uvprojx
index 3a1fb00..70099cb 100644
--- a/apps/chrg/project.uvprojx
+++ b/apps/chrg/project.uvprojx
@@ -337,7 +337,7 @@
             <v6Rtti>0</v6Rtti>
             <VariousControls>
               <MiscControls></MiscControls>
-              <Define>USE_HAL_DRIVER, STM32F405xx, __RTTHREAD__, __CLK_TCK=RT_TICK_PER_SECOND, __STDC_LIMIT_MACROS, RT_USING_LIBC, RT_USING_ARMLIBC</Define>
+              <Define>USE_HAL_DRIVER, STM32F405xx, __RTTHREAD__, __CLK_TCK=RT_TICK_PER_SECOND, __STDC_LIMIT_MACROS, RT_USING_LIBC, RT_USING_ARMLIBC,USER_VECT_TAB_ADDRESS=0x08010000</Define>
               <Undefine></Undefine>
               <IncludePath>..\..\rt-thread\components\drivers\include;..\..\lib\cmsis-core\Include;board;..\..\rt-thread\components\finsh;..\..\rt-thread\components\net\netdev\include;..\..\rt-thread\bsp\stm32\libraries\HAL_Drivers;..\..\rt-thread\components\drivers\phy;..\..\rt-thread\libcpu\arm\common;..\..\rt-thread\components\libc\compilers\common\extension\fcntl\octal;..\..\rt-thread\include;applications;..\..\rt-thread\components\libc\posix\io\poll;..\..\rt-thread\components\net\sal\include\socket\sys_socket;..\..\rt-thread\components\drivers\include;..\..\rt-thread\components\libc\posix\ipc;..\..\lib\stm32f4\STM32F4_CMSIS\Include;..\..\lib\stm32f4\STM32F4_HAL\Inc\Legacy;..\..\lib\freemodbus\modbus\ascii;..\..\lib\freemodbus\modbus\rtu;..\..\rt-thread\bsp\stm32\libraries\HAL_Drivers\drivers;..\..\rt-thread\components\drivers\include;..\..\rt-thread\components\libc\compilers\common\include;..\..\rt-thread\bsp\stm32\libraries\HAL_Drivers\drivers\config;..\..\rt-thread\components\drivers\smp_call;..\..\lib\freemodbus\port;..\..\lib\freemodbus\modbus\tcp;..\..\rt-thread\components\drivers\include;.;..\..\rt-thread\components\libc\posix\io\epoll;..\..\rt-thread\components\libc\posix\io\eventfd;..\..\rt-thread\components\net\sal\include;..\..\rt-thread\components\net\sal\include\socket;..\..\lib\freemodbus\modbus\include;..\..\rt-thread\libcpu\arm\cortex-m4;..\..\lib\stm32f4\STM32F4_HAL\Inc;..\..\rt-thread\components\drivers\include;..\..\rt-thread\components\libc\compilers\common\extension;board\CubeMX_Config\Inc</IncludePath>
             </VariousControls>
@@ -361,7 +361,7 @@
             </VariousControls>
           </Aads>
           <LDads>
-            <umfTarg>0</umfTarg>
+            <umfTarg>1</umfTarg>
             <Ropi>0</Ropi>
             <Rwpi>0</Rwpi>
             <noStLib>0</noStLib>
diff --git a/docs/HC_DFCD_Protocol_V1_0.pdf b/docs/HC_DFCD_Protocol_V1_0.pdf
new file mode 100644
index 0000000..f4182b9
Binary files /dev/null and b/docs/HC_DFCD_Protocol_V1_0.pdf differ
diff --git a/docs/pcf8574-I2C扩展8路GPIO.pdf b/docs/pcf8574-I2C扩展8路GPIO.pdf
new file mode 100644
index 0000000..a1f45b9
Binary files /dev/null and b/docs/pcf8574-I2C扩展8路GPIO.pdf differ