update readme

2 files changed, 35 insertions, 66 deletions

diff --git a/README.md b/README.md
index 7103615a..6b15998e 100644
--- a/README.md
+++ b/README.md
@@ -2,47 +2,32 @@
 
 [中文版](./README_zh.md)
 
-CherryUSB is a tiny, beautiful and portable USB host and device stack for embedded system.
+CherryUSB is a tiny, beautiful and portable USB host and device stack for embedded system with USB ip.
 
 ![CherryUSB](./docs/asserts/usb_outline.png)
 
-## CherryUSB Directoy Structure
+## Why choose
+
+- Ip-oriented programming, the same usb ip driver does not need to be written repeatedly, only the parts that are not the same need to be implemented
+- Code tree writing makes it easier for users to understand usb concept, enumeration process, class driver loading
+- Templating the Class driver makes it easier to use composite device and add custom drivers
+- Simplifying the complex transfer of usb makes it easier for users to use usb as easily as uart and dma
+- Fewer directory structures, fewer apis, fewer codesize, extreme usb bandwidth
+
+## Directoy Structure
 
 ```
 .
 ├── class
-│   ├── audio
-│   ├── cdc
-│   ├── dfu
-│   ├── hid
-│   ├── hub
-│   ├── midi
-│   ├── msc
-│   ├── tmc
-│   └── video
 ├── common
 ├── core
 ├── demo
-│   ├── bouffalolab
-│   └── ch32
-│   └── es32
-│   └── mm32
-│   └── nuvoton
-│   └── stm32
 ├── docs
 ├── osal
 ├── packet capture
 └── port
-    ├── bouffalolab
-    │   └── bl702
-    ├── ch32
-    ├── ehci
-    ├── fsdev
-    ├── mm32
-    ├── musb
-    ├── nuvoton
-    ├── synopsys
-    └── template
+└── tools
+
 ```
 
 |   Directory       |  Description            |
@@ -57,7 +42,7 @@ CherryUSB is a tiny, beautiful and portable USB host and device stack for embedd
 |port           |  usb dcd and hcd porting |
 |tools           |  tool used url          |
 
-## CherryUSB Device Stack Overview
+## Device Stack Overview
 
 CherryUSB Device Stack provides a unified framework of functions for standard device requests, CLASS requests, VENDOR requests and custom special requests. The object-oriented and chained approach allows the user to quickly get started with composite devices without having to worry about the underlying logic. At the same time, a standard dcd porting interface has been standardised for adapting different USB IPs to achieve ip-oriented programming.
 
@@ -79,7 +64,7 @@ CherryUSB Device Stack has the following functions：
 - Support WINUSB1.0、WINUSB2.0(with BOS)
 - Support Vendor class
 
-CherryUSB Device Stack resource usage：
+CherryUSB Device Stack resource usage (GCC 10.2 with -O2)：
 
 |   file      |  FLASH (Byte)  |  RAM (Byte)  |
 |:-----------:|:--------------:|:------------:|
@@ -90,7 +75,7 @@ CherryUSB Device Stack resource usage：
 |usbd_audio.c |  438           | 14           |
 |usbd_video.c |  402           | 4            |
 
-## CherryUSB Host Stack Overview
+## Host Stack Overview
 
 The CherryUSB Host Stack has a standard enumeration implementation for devices mounted on roothubs and external hubs, and a standard interface for the different Class to indicate what the Class driver needs to do after enumeration and after disconnection. A standard hcd porting interface has also been standardised for adapting different USB IPs for IP-oriented programming. Finally, the protocol stack is managed using os, and provides osal to make a adaptation to different os.
 
@@ -108,14 +93,14 @@ CherryUSB Host Stack has the following functions：
 
 The CherryUSB Host stack also provides the lsusb function, which allows you to view information about all mounted devices, including those on external hubs, with the help of a shell plugin.
 
-## CherryUSB Documentation Tutorial
+## Documentation Tutorial
 
 Quickly start, USB basic concepts, API manual, Class basic concepts and examples, see [CherryUSB Documentation Tutorial](https://cherryusb.readthedocs.io/)
 
-## CherryUSB Video Tutorial
+## Video Tutorial
 
 USB basic concepts and how the CherryUSB Device stack is implemented, see [CherryUSB Device Stack Tutorial](https://www.bilibili.com/video/BV1Ef4y1t73d).
 
-## CherryUSB Graphical Config Tool
+## Graphical Config Tool
 
 [chryusb_configurator](https://github.com/Egahp/chryusb_configurator) is written in **electron + vite2 + ts** framework，currently used to automate the generation of descriptor arrays, with additional functionality to be added later.
\ No newline at end of file
diff --git a/README_zh.md b/README_zh.md
index 405abecf..522bc98d 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -2,47 +2,31 @@
 
 [English](./README.md)
 
-CherryUSB 是一个小而美的、可移植性高的、用于嵌入式系统的 USB 主从协议栈。
+CherryUSB 是一个小而美的、可移植性高的、用于嵌入式系统(带 USB ip)的 USB 主从协议栈。
 
 ![CherryUSB](./docs/asserts/usb_outline.png)
 
-## CherryUSB 目录结构
+## 为什么选择
+
+- 面向 ip 编程，相同 usb ip 驱动无需重复编写，仅需实现不相同的部分
+- 代码树状化编写，轻松理解 usb 概念、枚举过程、class 驱动加载
+- Class 驱动模板化，轻松实现复合设备和自定义添加驱动
+- 将 usb 的复杂传输简单化，使得用户能够像 uart、dma 一样轻松使用 usb
+- 少量的目录结构，少量的 api，少量的 codesize，极致的 usb 带宽
+
+## 目录结构
 
 ```
 .
 ├── class
-│   ├── audio
-│   ├── cdc
-│   ├── dfu
-│   ├── hid
-│   ├── hub
-│   ├── midi
-│   ├── msc
-│   ├── tmc
-│   └── video
 ├── common
 ├── core
 ├── demo
-│   ├── bouffalolab
-│   └── ch32
-│   └── es32
-│   └── mm32
-│   └── nuvoton
-│   └── stm32
 ├── docs
 ├── osal
 ├── packet capture
 └── port
-    ├── bouffalolab
-    │   └── bl702
-    ├── ch32
-    ├── ehci
-    ├── fsdev
-    ├── mm32
-    ├── musb
-    ├── nuvoton
-    ├── synopsys
-    └── template
+└── tools
 ```
 
 |   目录名       |  描述                          |
@@ -57,7 +41,7 @@ CherryUSB 是一个小而美的、可移植性高的、用于嵌入式系统的
 |port           |  usb 主从需要实现的 porting 接口 |
 |tools           |  工具链接                       |
 
-## CherryUSB Device 协议栈简介
+## Device 协议栈简介
 
 CherryUSB Device 协议栈对标准设备请求、CLASS 请求、VENDOR 请求以及 custom 特殊请求规范了一套统一的函数框架，采用面向对象和链表的方式，能够使得用户快速上手复合设备，不用管底层的逻辑。同时，规范了一套标准的 dcd porting 接口，用于适配不同的 USB IP，达到面向 ip 编程。
 
@@ -79,7 +63,7 @@ CherryUSB Device 协议栈当前实现以下功能：
 - 支持 WINUSB1.0、WINUSB2.0(带 BOS )
 - 支持 Vendor 类 class
 
-CherryUSB Device 协议栈资源占用说明：
+CherryUSB Device 协议栈资源占用说明（GCC 10.2 with -O2）：
 
 |   file      |  FLASH (Byte)  |  RAM (Byte)  |
 |:-----------:|:--------------:|:------------:|
@@ -90,7 +74,7 @@ CherryUSB Device 协议栈资源占用说明：
 |usbd_audio.c |  438           | 14           |
 |usbd_video.c |  402           | 4            |
 
-## CherryUSB Host 协议栈简介
+## Host 协议栈简介
 
 CherryUSB Host 协议栈对挂载在 roothub、外部 hub 上的设备规范了一套标准的枚举实现，对不同的 Class 类也规范了一套标准接口，用来指示在枚举后和断开连接后该 Class 驱动需要做的事情。同时，规范了一套标准的 hcd porting 接口，用于适配不同的 USB IP，达到面向 IP 编程。最后，协议栈使用 OS 管理，并提供了 osal 用来适配不同的 os。
 
@@ -108,14 +92,14 @@ CherryUSB Host 协议栈当前实现以下功能：
 
 同时，CherryUSB Host 协议栈还提供了 lsusb 的功能，借助 shell 插件可以查看所有挂载设备的信息，包括外部 hub 上的设备的信息。
 
-## CherryUSB 文档教程
+## 文档教程
 
 CherryUSB 快速入门、USB 基本概念，API 手册，Class 基本概念和例程，参考 [CherryUSB 文档教程](https://cherryusb.readthedocs.io/)
 
-## CherryUSB 视频教程
+## 视频教程
 
 USB 基本知识点与 CherryUSB Device 协议栈是如何编写的，参考 [CherryUSB Device 协议栈教程](https://www.bilibili.com/video/BV1Ef4y1t73d).
 
-## CherryUSB 图形化界面配置工具
+## 图形化界面配置工具
 
 [chryusb_configurator](https://github.com/Egahp/chryusb_configurator) 采用 **electron + vite2 + ts** 框架编写，当前用于自动化生成描述符数组，后续会增加其他功能。
\ No newline at end of file