[BSP/WCH] fix read me for pkgs --update

Author: supperthomas

bsp/wch/risc-v/ch32v208w-r0/readme.md

@@ -10,6 +10,8 @@ The CH32V208W-R0 supports RT-Studio projects, and this tutorial gives an example
 - Download and install RT-Thread Studio, [link to address](https://www.rt-thread.org/studio.html).
 - Prepare the ESP8266 module.
 
+>NOTE: Please execute `pkgs --update` before `scons`
+
 ## 2 BSP Start Stage
 
 ### 2.1 Click on the file and select the import option.
@@ -140,4 +142,5 @@ void loop(void)
 
 <img src="./figures/17led.png" style="zoom: 25%;" />
 
-So the basic environment of ch32v208w-r0 is built and tested!
+So the basic environment of ch32v208w-r0 is built and tested!
+

bsp/wch/risc-v/ch32v307v-r1/README.md

@@ -48,8 +48,11 @@ This section is about to introduce how to use Env to compile the BSP.
 1. [Download WCH Compile Toolchain](https://github.com/NanjingQinheng/sdk-toolchain-RISC-V-GCC-WCH/releases)
 2. [Download the Env tool latest version](https://github.com/RT-Thread/env-windows/releases)
 3. [Download the RT-Thread latest code](https://github.com/RT-Thread/rt-thread/archive/refs/heads/master.zip)
-4. Open the Env tool in the current BSP root directory and execute the `scons -j12 --exec-path=D:\sdk-toolchain-RISC-V-GCC-WCH-1.0.0\bin` command, compile it directly while specifying the toolchain location.
-5. After compilation, the **rtthread.bin** file will be generated
+4. enter bsp
+5. execute `scons --pyconfig-silent`
+6. execute `pkgs --update`
+7. Open the Env tool in the current BSP root directory and execute the `scons -j12 --exec-path=D:\sdk-toolchain-RISC-V-GCC-WCH-1.0.0\bin` command, compile it directly while specifying the toolchain location.
+8. After compilation, the **rtthread.bin** file will be generated
 
 ![sconscompile](./figures/sconscompile.jpg)
 

bsp/wch/risc-v/ch32v307v-r1/README_zh.md

@@ -40,8 +40,11 @@ CH32V307V-R1 是 WCH 推出的一款基于 RISC-V 内核的开发板，最高主
 1. [下载 WCH 编译工具链](https://github.com/NanjingQinheng/sdk-toolchain-RISC-V-GCC-WCH/archive/refs/tags/V1.0.0.zip)
 2. 下载 Env 工具[最新版本](https://github.com/RT-Thread/env-windows/releases)
 3. 下载 RT-Thread[最新源码](https://github.com/RT-Thread/rt-thread/archive/refs/heads/master.zip)
-4. 并在当前 BSP 根目录下打开 Env 工具并执行 `scons --exec-path=D:\sdk-toolchain-RISC-V-GCC-WCH-1.0.0\bin` 命令，在指定工具链位置的同时直接编译。
-5. 编译完成之后会生成 **rtthread.bin** 文件。
+4. 打开Env工具进入bsp目录
+5. 执行`scons --pyconfig-silent`刷新配置
+6. 执行`pkgs --update`拉取
+7. 执行 `scons --exec-path=D:\sdk-toolchain-RISC-V-GCC-WCH-1.0.0\bin` 命令，在指定工具链位置的同时直接编译。
+8. 编译完成之后会生成 **rtthread.bin** 文件。
 
 ![sconscompile](./figures/sconscompile.jpg)
 

bsp/wch/risc-v/yd-ch32v307vct6/README.md

@@ -56,8 +56,9 @@ This section is about to introduce how to compile the BSP in Linux.
 3. Install SCons construction tool (similar GNU Make): sudo apt install scons
 4. Edit the variable **EXEC_PATH** in file **rtconfig.py** to point to the directory with executable WCH Compile Toolchain (file riscv-none-embed-gcc).
 5. Configure RT-Thread and hardware board: scons --menuconfig
-6. Start compilation: scons
-7. After compilation, the **rtthread.bin** file will be generated
+6. Update sdk library: `pkgs --update`
+7. Start compilation: scons
+8. After compilation, the **rtthread.bin** file will be generated
 
 #### 3.1.2 Download