diff --git a/CMakeLists.txt b/CMakeLists.txt
index b96afc5..fc0d408 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.28)
 include(cmake/toolchain.cmake)
 
-project(gd32e23_template)
+project(gd32e23x_template)
 
 enable_language(C)
 enable_language(CXX)
@@ -10,7 +10,7 @@ enable_language(ASM)
 # Use custom startup.S
 set(TARGET_STARTUP_ASM ${CMAKE_SOURCE_DIR}/startup/startup_gd32e23x.S)
 # Use custom linker script
-set(TARGET_LD_SCRIPT ${CMAKE_SOURCE_DIR}/ld/gd_e230f4_gcc.ld)
+set(TARGET_LD_SCRIPT ${CMAKE_SOURCE_DIR}/ld/gd32e23x_gcc.ld)
 # Add GD SDK
 add_subdirectory(sdk)
 
@@ -21,11 +21,11 @@ set(TARGET_C_SRC
         ${CMAKE_SOURCE_DIR}/src/wc_bldc_control.c
 )
 
-add_executable(gd32e23_template ${TARGET_C_SRC})
+add_executable(gd32e23x_template ${TARGET_C_SRC})
 
-target_link_libraries(gd32e23_template GD32E23X_SDK)
-target_include_directories(gd32e23_template PUBLIC inc)
+target_link_libraries(gd32e23x_template GD32E23X_SDK)
+target_include_directories(gd32e23x_template PUBLIC inc)
 
 # Generate .bin and .hex
-generate_binary_file(gd32e23_template)
-generate_hex_file(gd32e23_template)
+generate_binary_file(gd32e23x_template)
+generate_hex_file(gd32e23x_template)
diff --git a/README.md b/README.md
index 4643188..56ab2cb 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,34 @@
 # gd32_temp
 from mo10
+
+
+## 关于链接脚本
+
+注意芯片选型, 不同型号的芯片 FLASH 和 RAM 大小不同。需要修改链接脚本`ld/gd32e23x_gcc.ld`
+
+| 芯片型号       | FLASH | RAM |
+|------------|-------|-----|
+| GD32E230F4 | 16K   | 4K  |
+| GD32E230F8 | 64K   | 8K  |
+
+```linkerscript
+/* memory map */
+MEMORY
+{
+FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 16K
+RAM (xrw)       : ORIGIN = 0x20000000, LENGTH = 4K
+}
+```
+
+
+## Ref
+
+1. 参考LD/Startup
+
+[https://github.com/Noveren/gd32e23x-template/blob/main/gd32e23x/template/linker.ld](https://github.com/Noveren/gd32e23x-template/blob/main/gd32e23x/template/linker.ld)
+
+[https://github.com/Noveren/gd32e23x-template/blob/main/gd32e23x/template/startup.s](https://github.com/Noveren/gd32e23x-template/blob/main/gd32e23x/template/startup.s)
+
+2. 官方LD/Startup
+
+使用Embedded Builder工具生成的C标准库生成的模板
\ No newline at end of file
diff --git a/doc/AN074_GD32E23x_Hardware_Development_Guide_Rev1.0_CN.pdf b/doc/AN074_GD32E23x_Hardware_Development_Guide_Rev1.0_CN.pdf
new file mode 100644
index 0000000..85cac46
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diff --git a/doc/GD32E230xx_Datasheet_Rev2.6.pdf b/doc/GD32E230xx_Datasheet_Rev2.6.pdf
new file mode 100644
index 0000000..7a7c35a
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diff --git a/doc/GD32E23x_Firmware_Library_User_Guide_Rev1.2.pdf b/doc/GD32E23x_Firmware_Library_User_Guide_Rev1.2.pdf
new file mode 100644
index 0000000..17b65c0
Binary files /dev/null and b/doc/GD32E23x_Firmware_Library_User_Guide_Rev1.2.pdf differ
diff --git a/doc/GD32E23x_User_Manual_Rev2.1_CN.pdf b/doc/GD32E23x_User_Manual_Rev2.1_CN.pdf
new file mode 100644
index 0000000..10db191
Binary files /dev/null and b/doc/GD32E23x_User_Manual_Rev2.1_CN.pdf differ
diff --git a/doc/GD32E23x_固件库使用指南_Rev1.2.pdf b/doc/GD32E23x_固件库使用指南_Rev1.2.pdf
new file mode 100644
index 0000000..546a654
Binary files /dev/null and b/doc/GD32E23x_固件库使用指南_Rev1.2.pdf differ
diff --git a/ld/gd_e230f4_gcc.ld b/ld/gd32e23x_gcc.ld
similarity index 100%
rename from ld/gd_e230f4_gcc.ld
rename to ld/gd32e23x_gcc.ld
diff --git a/src/main.c b/src/main.c
index d012f99..9b971e5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4,7 +4,6 @@
     
     \version 2024-02-22, V2.1.0, firmware for GD32E23x
 */
-
 #include "main.h"
 #include <stdio.h>
 #include "gd32e23x.h"
@@ -20,7 +19,6 @@
     \param[out] none
     \retval     none
 */
-
 int main(void)
 {
     /* configure systick */