diff --git a/BUILD.gn b/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..72eb5be82f4bc3a14d96a42de67aa4f5cc62d848
--- /dev/null
+++ b/BUILD.gn
@@ -0,0 +1,20 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+if (ohos_kernel_type == "liteos_m") {
+  import("//kernel/liteos_m/liteos.gni")
+  module_name = get_path_info(rebase_path("."), "name")
+  module_group(module_name) {
+    modules = [ "esp32_devkitc_v4" ]
+  }
+}
diff --git a/Kconfig.liteos_m.boards b/Kconfig.liteos_m.boards
new file mode 100644
index 0000000000000000000000000000000000000000..da2ff2daab3aa8c4847f56ce8e1fcc1dbc419214
--- /dev/null
+++ b/Kconfig.liteos_m.boards
@@ -0,0 +1,15 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+orsource "*/Kconfig.liteos_m.board"
+
diff --git a/Kconfig.liteos_m.defconfig.boards b/Kconfig.liteos_m.defconfig.boards
new file mode 100644
index 0000000000000000000000000000000000000000..86797f876a592d5a47b6f5b0877d0a04f60fa3a1
--- /dev/null
+++ b/Kconfig.liteos_m.defconfig.boards
@@ -0,0 +1,14 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+orsource "*/Kconfig.liteos_m.defconfig.board"
diff --git a/Kconfig.liteos_m.shields b/Kconfig.liteos_m.shields
new file mode 100644
index 0000000000000000000000000000000000000000..096029e1fca3f91ca3df94e042d472e7ac63a81b
--- /dev/null
+++ b/Kconfig.liteos_m.shields
@@ -0,0 +1,15 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+#orsource "shields/Kconfig.liteos_m.defconfig.shields"
+orsource "shields/Kconfig.liteos_m.shields"
diff --git a/README.md b/README.md
index c1af20957aeb25cf2e4af5fab4522c937fedb059..88659a61fd04aa8058a3b5638cae1906f68c6079 100644
--- a/README.md
+++ b/README.md
@@ -1,39 +1,85 @@
-# device_board_espressif
+# ESP32-DEVKITC_V4
+## 介绍
+ESP32-DEVKITC_V4是乐鑫一款基于ESP32_WROVER_IE的小型开发板。单模组采用了ESP32系列的ESP32-D0WD-V3芯片（xtensa 32-bit LX6 双核处理器），CPU时钟频率可调节为80MHz到240MHz，配置4MB SPI flash和8MB SPI PSRAM，集成传统蓝牙、低功耗蓝牙和Wi-Fi。可以用于低功耗传感器网络和要求极高的任务，例如语音编码、音频流和 MP3 解码等。
 
-#### 介绍
-{**以下是 Gitee 平台说明，您可以替换此简介**
-Gitee 是 OSCHINA 推出的基于 Git 的代码托管平台（同时支持 SVN）。专为开发者提供稳定、高效、安全的云端软件开发协作平台
-无论是个人、团队、或是企业，都能够用 Gitee 实现代码托管、项目管理、协作开发。企业项目请看 [https://gitee.com/enterprises](https://gitee.com/enterprises)}
+开发板外观图片。
 
-#### 软件架构
-软件架构说明
+![ESP32正面照片](https://gitee.com/baochenjin/device_board_espressif/raw/master/figures/ESP32正面照片.jpg)
 
+开发板底板图片。
 
-#### 安装教程
+![ESP32背面照片](https://gitee.com/baochenjin/device_board_espressif/raw/master/figures/ESP32背面照片.jpg)
 
-1.  xxxx
-2.  xxxx
-3.  xxxx
+开发板功能块图。
 
-#### 使用说明
+![ESP32-WROVER_IE功能图](https://gitee.com/baochenjin/device_board_espressif/raw/master/figures/ESP32-WROVER_IE功能图.png)
 
-1.  xxxx
-2.  xxxx
-3.  xxxx
 
-#### 参与贡献
+## 模组规格
 
-1.  Fork 本仓库
-2.  新建 Feat_xxx 分支
-3.  提交代码
-4.  新建 Pull Request
+|  器件类别	|  开发板|  
+|  ----  | ----  | 
+|  CPU	|  Xtensa 32-bit LX6 双核处理器（最高240MHz） |  
+|  SRAM	|  520 KB|  
+|  ROM	|  448 KB|
+|  RTC SRAM	|  16 KB|
+|  GPIO	|  34|  
+|  I2C	|  2|  
+|  UART |  3|  
+|  SPI	|  4|
+|  I2S	|  2|
+|  8bit DAC |  2|
+|  12-bit SAR ADC | 18channel 12bit |
+|  touch sensors  | 10|
+|  host (SD/eMMC/SDIO)  | 1|
+|  Ethernet MAC  | IEEE-802.3-2008|
+|  TWAI  | 兼容 ISO11898-1（CAN 规范 2.0）|
+|  RMT (TX/RX) | 支持|
+|  Motor PWM | 支持|
+|  LED PWM | 支持|
+|  Hall sensor | 支持|
+|  Radio | 2.4 GHz 接收/发射器|
+|  WiFi  | TCP/IP、802.11 b/g/n、DCF|
+|  Bluetooth | Bluetoothv4.2、Class-1、Class-2、Class-3、SDIO/SPI/UART HCI
 
+## 引脚定义
 
-#### 特技
+![ESP32-WROVER_IE管脚](https://gitee.com/baochenjin/device_board_espressif/raw/master/figures/ESP32-WROVER_IE管脚.png)
 
-1.  使用 Readme\_XXX.md 来支持不同的语言，例如 Readme\_en.md, Readme\_zh.md
-2.  Gitee 官方博客 [blog.gitee.com](https://blog.gitee.com)
-3.  你可以 [https://gitee.com/explore](https://gitee.com/explore) 这个地址来了解 Gitee 上的优秀开源项目
-4.  [GVP](https://gitee.com/gvp) 全称是 Gitee 最有价值开源项目，是综合评定出的优秀开源项目
-5.  Gitee 官方提供的使用手册 [https://gitee.com/help](https://gitee.com/help)
-6.  Gitee 封面人物是一档用来展示 Gitee 会员风采的栏目 [https://gitee.com/gitee-stars/](https://gitee.com/gitee-stars/)
+![ESP32-WROVER_IE管脚定义2](https://gitee.com/baochenjin/device_board_espressif/raw/master/figures/ESP32-WROVER_IE管脚定义2.png)
+
+
+## 搭建开发环境
+
+### 系统要求
+OpenHarmony在基于Xtensa 32-bit LX6芯片的ESP32-WROVER-IE模组，依赖liteos_m内核，内核依赖LX6架构配置，编译依赖a乐鑫官方提供的xtensa-esp32-elf-gcc 8.2.0版本
+OpenHarmony需要按照官方文档介绍安装环境https://gitee.com/openharmony-sig/device_soc_espressif/blob/master/README.md，然后编译出烧录包，按照文档介绍烧录。
+
+### 工具要求
+ubuntu 18.04编译，windows10系统烧录。
+
+https://gitee.com/openharmony-sig/device_soc_espressif/blob/master/README.md
+
+### 搭建过程
+
+https://gitee.com/openharmony-sig/device_soc_espressif/blob/master/README.md
+
+## 编译调试
+
+https://gitee.com/openharmony-sig/device_soc_espressif/blob/master/README.md
+
+按下开发板上reset power按钮，通过串口调试工具打印串口log。
+
+## 首个示例
+
+代码默认有一个UART打印示例。
+
+## 参考资源
+
+https://gitee.com/openharmony-sig/device_soc_espressif/blob/master/README.md
+
+https://www.espressif.com/zh-hans/support/documents/technical-documents?keys=&field_type_tid%5B%5D=681
+
+## 联系
+
+**********
\ No newline at end of file
diff --git a/esp32_devkitc_v4/BUILD.gn b/esp32_devkitc_v4/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..a90373de9af84e9fba99ce82a4ddc5f717a460f4
--- /dev/null
+++ b/esp32_devkitc_v4/BUILD.gn
@@ -0,0 +1,20 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+if (ohos_kernel_type == "liteos_m") {
+  import("//kernel/liteos_m/liteos.gni")
+  module_name = get_path_info(rebase_path("."), "name")
+  module_group(module_name) {
+    modules = [ "liteos_m" ]
+  }
+}
diff --git a/esp32_devkitc_v4/Kconfig.liteos_m.board b/esp32_devkitc_v4/Kconfig.liteos_m.board
new file mode 100644
index 0000000000000000000000000000000000000000..0e76fc3288acd3dbf5cf065f6cdd4823a1becf42
--- /dev/null
+++ b/esp32_devkitc_v4/Kconfig.liteos_m.board
@@ -0,0 +1,17 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+config BOARD_ESP32_DEVKITC_V4
+    bool "select board esp32"
+    depends on SOC_ESP32
+
diff --git a/esp32_devkitc_v4/Kconfig.liteos_m.defconfig.board b/esp32_devkitc_v4/Kconfig.liteos_m.defconfig.board
new file mode 100644
index 0000000000000000000000000000000000000000..7e3d03180701af915bf966d0aeb0f90551e40678
--- /dev/null
+++ b/esp32_devkitc_v4/Kconfig.liteos_m.defconfig.board
@@ -0,0 +1,21 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+if BOARD_CB2201
+config FLASH_SIZE
+    int 
+    default 16
+    help 
+        support flash size
+endif #BOARD_CB2201
+
diff --git a/esp32_devkitc_v4/liteos_m/BUILD.gn b/esp32_devkitc_v4/liteos_m/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..f5e1178788a44f94145bae56fe0320f665756fe2
--- /dev/null
+++ b/esp32_devkitc_v4/liteos_m/BUILD.gn
@@ -0,0 +1,19 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//kernel/liteos_m/liteos.gni")
+
+module_name = get_path_info(rebase_path("."), "name")
+module_switch = defined(LOSCFG_BOARD_ESP32)
+kernel_module(module_name) {
+}
diff --git a/esp32_devkitc_v4/liteos_m/config.gni b/esp32_devkitc_v4/liteos_m/config.gni
new file mode 100644
index 0000000000000000000000000000000000000000..2723ec2bac674590620bb92f103e1e2e5e295c9c
--- /dev/null
+++ b/esp32_devkitc_v4/liteos_m/config.gni
@@ -0,0 +1,107 @@
+# Copyright (c) 2021 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Kernel type, e.g. "linux", "liteos_a", "liteos_m".
+kernel_type = "liteos_m"
+
+# Kernel version.
+kernel_version = "3.0.0"
+
+# Board CPU type, e.g. "cortex-a7", "riscv32".
+board_cpu = ""
+
+# Board arch, e.g.  "armv7-a", "rv32imac".
+board_arch = ""
+
+# Board, e.g.  "esp32".
+board = "esp32"
+
+# Toolchain name used for system compiling.
+# E.g. gcc-arm-none-eabi, arm-linux-harmonyeabi-gcc, ohos-clang,  riscv32-unknown-elf.
+# Note: The default toolchain is "ohos-clang". It's not mandatory if you use the default toochain.
+board_toolchain = "xtensa-esp32-elf-gcc"
+
+# The toolchain path instatlled, it's not mandatory if you have added toolchian path to your ~/.bashrc.
+board_toolchain_path = ""
+
+# Compiler prefix.
+board_toolchain_prefix = "xtensa-esp32-elf-"
+
+# Compiler type, "gcc" or "clang".
+board_toolchain_type = "gcc"
+
+# Board related common compile flags.
+board_cflags = [
+  "-mlongcalls",
+  "-O0",
+  "-g",
+  "-Wall",
+  "-Wextra",
+  "-fno-common",
+  "-Wdouble-promotion",
+  "-mtext-section-literals",
+  "-DESP32",
+  "-Wno-implicit-function-declaration",
+  "-Wno-sign-conversion",
+  "-Wno-sign-compare",
+  "-W",
+  "-Wshadow",
+  "-ffunction-sections",
+  "-fdata-sections",
+  "-Wno-conversion",
+  "-Wno-unused-parameter",
+  "-Wno-unused-variable",
+  "-Wno-type-limits",
+  "-Wno-cast-function-type",
+  "-Wno-implicit-fallthrough",
+  "-Wno-parentheses",
+  "-Wno-pointer-sign",
+  "-D__FPU_PRESENT",
+  "-DPLAYER_TOOL",
+  "-DOS_HEAP_SIZE=0x400000",
+  "-DCHIP_HAS_UART=3",
+  "-DRTOS",
+  "-DDEBUG=1",
+  "-DCMSIS_OS_VER=2",
+  "-DOS_HWI_MAX_NUM=96",
+  "-DLFS_MAX_OPEN_DIRS=32",
+  "-DMBEDTLS_CMSIS_FILE=\"rtos/liteos/liteos_m/kal/cmsis/cmsis_os.h\"",
+  "-DLOSCFG_BASE_CORE_HILOG",
+]
+
+# config.json parse
+if (product_path != "") {
+  product_conf = read_file("${product_path}/config.json", "json")
+  product_name = product_conf.product_name
+  flash_partition_dir = product_conf.flash_partition_dir
+}
+
+board_cxx_flags = board_cflags
+board_ld_flags = [ "-L${ohos_root_path}out/${board_name}/${product_name}/libs" ]
+
+# Board related headfiles search path.
+board_include_dirs = [
+  "${ohos_root_path}third_party/bounds_checking_function/include",
+  "${ohos_root_path}utils/native/lite/include",
+]
+board_include_dirs += []
+
+# Board adapter dir for OHOS components.
+board_adapter_dir =
+    "${ohos_root_path}device/soc/espressif/esp32_wrover_ie/liteos_m"
+
+# Sysroot path.
+board_configed_sysroot = ""
+
+# Board storage type, it used for file system generation.
+storage_type = ""
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