update docs

Signed-off-by: N Annie_wang <annie.wangli@huawei.com>

update docs
Signed-off-by: N Annie_wang <annie.wangli@huawei.com>
1588b8fd · Annie_wang · 0fd73876 · 1588b8fd · 1588b8fd
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Showing with 116 addition and 91 deletion

en/device-dev/faqs/faqs-building.md en/device-dev/faqs/faqs-building.md +111 -88

en/device-dev/faqs/faqs-system-applications.md en/device-dev/faqs/faqs-system-applications.md +5 -3

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--- a/en/device-dev/faqs/faqs-building.md
+++ b/en/device-dev/faqs/faqs-building.md
@@ -8,11 +8,12 @@

 - **Symptom**
  
-The compilation fails, and **usr/sbin/ninja: invalid option -- w** is displayed.
+
+  The compilation fails, and **usr/sbin/ninja: invalid option -- w** is displayed.

 - **Possible Causes**

-The Ninja version in the compilation environment is outdated and does not support the **--w** option.
+  The Ninja version in the compilation environment is outdated and does not support the --w option.

 - **Solution**
  
@@ -23,16 +24,18 @@ The Ninja version in the compilation environment is outdated and does not suppor

 - **Symptom**
  
-The compilation fails, and **/usr/bin/ld: cannot find -lncurses** is displayed.
+
+  The compilation fails, and **/usr/bin/ld: cannot find -lncurses** is displayed.

 - **Possible Causes**
  
-The ncurses library is not installed.
+
+  The ncurses library is not installed.

 - **Solution**
  
  ```
-  Run **sudo apt-get install lib32ncurses5-dev** to install the library.
+  sudo apt-get install lib32ncurses5-dev
  ```


@@ -40,16 +43,18 @@ The ncurses library is not installed.

 - **Symptom**
  
-The compilation fails, and **line 77: mcopy: command not found** is displayed.
+
+  The compilation fails, and **line 77: mcopy: command not found** is displayed.

 - **Possible Causes**
  
-Mcopy is not installed.
+
+  Mcopy is not installed.

 - **Solution**
  
  ```
-  Run **sudo apt-get install dosfstools mtools** to install mcopy.
+  sudo apt-get install dosfstools mtools
  ```


@@ -57,40 +62,43 @@ Mcopy is not installed.

 - **Symptom**
  
-The compilation fails, and the following information is displayed: **riscv32-unknown-elf-gcc: error trying to exec 'cc1': execvp: No such file or directory**.
+
+  The compilation fails, and the following information is displayed: **riscv32-unknown-elf-gcc: error trying to exec 'cc1': execvp: No such file or directory**.

 - **Possible Causes**
  
-Permission is required to access files in the **riscv** compiler path.
+
+  Permission is required to access files in the **riscv** compiler path.

 - **Solution**
  
-    Run the following command to query the directory where **gcc_riscv32** is located:
+  1. Run the following command to query the directory where **gcc_riscv32** is located:
+  
  
  ```
  which riscv32-unknown-elf-gcc
-```
+  ```
  
-  Run the **chmod** command to change the directory permission to **755**.
+  2. Run the **chmod** command to change the directory permission to **755**.


 ### "No module named 'Crypto'" Displayed During the Build Process

 - **Symptom**
  
-The compilation fails, and **No module named'Crypto loaded** is displayed.
+  The compilation fails, and **No module named'Crypto loaded** is displayed.
  
 - **Possible Causes**
  
-Crypto is not installed in Python3.
+  Crypto is not installed in Python3.
  
 - **Solution**
  
  1. Run the following command to query the Python version:
     
-      ```
+```
      python3 --version
-      ```
+```
  2. Ensure that Python 3.7 or later is installed, and then run the following command to install pycryptodome:
     
      ```
@@ -102,11 +110,13 @@ Crypto is not installed in Python3.

 - **Symptom**
  
-The compilation fails, and **xx.sh [: xx unexpected operator** is displayed.
+
+  The compilation fails, and **xx.sh [: xx unexpected operator** is displayed.

 - **Possible Causes**
  
-The compilation environment is shell instead of bash.
+
+  The compilation environment is shell instead of bash.

 - **Solution**
  
@@ -120,28 +130,31 @@ The compilation environment is shell instead of bash.

 - **Symptom**
  
-The following error occurs during compilation and building:
+
+  The following error occurs during compilation and building:


  ```
  Could not find a version that satisfies the requirement six>=1.9.0
-```
+  ```

 - **Possible Causes**
  
-**six** is not installed.
+
+  **six** is not installed.

 - **Solution**
  
-Solution 1: Run the **pip3 install six** command to install **six** online.

-Method 2: Offline installation
+  Method 1: Run the **pip3 install six** command to install **six** online.
+
+  Method 2: Offline installation

-Download the installation package from [PyPI](https://pypi.org/project/six/#files).
+  Download the installation package from [PyPI](https://pypi.org/project/six/#files).

-![en-us_image_0000001251276115](figures/en-us_image_0000001251276115.png)
+  ![en-us_image_0000001251276115](figures/en-us_image_0000001251276115.png)

-Save the source code to the Linux server and run the **pip3 install six-1.14.0-py2.py3-none-any.whl** command to install **six**.
+  Save the source code to the Linux server and run the **pip3 install six-1.14.0-py2.py3-none-any.whl** command to install **six**.

  After the preceding installation is complete, rebuild an environment.

@@ -150,25 +163,28 @@ Save the source code to the Linux server and run the **pip3 install six-1.14.0-p

 - **Symptom**
  
-The following error occurs during the build process:
+
+  The following error occurs during the build process:


  ```
  riscv32-unknown-elf-ld: cannot find -lgcc
-```
+  ```

 - **Possible Causes**
  
-The PATH is incorrectly written by **gcc_riscv32**. There is an extra slash (/).
+
+  The gcc_riscv32 PATH is incorrect. There is an extra slash (/) after **bin**.


  ```
  ~/gcc_riscv32/bin/:/data/toolchain/
-```
+  ```

 - **Solution**
  
-Modify the PATH by deleting the slash (/).
+
+  Modify the PATH as follows:


  ```
@@ -180,35 +196,40 @@ Modify the PATH by deleting the slash (/).

 - **Symptom**
  
-The following error occurs during the build process:
+
+  The following error occurs during the build process:


  ```
  -bash: /usr/bin/python: No such file or directory
-```
+  ```

 - **Possible Cause 1**
  
-Python is not installed.
+
+  Python is not installed.

 - **Solution**
  
-Run the following command to install Python. The following uses Python 3.8 as an example.
+
+  Run the following command to install Python (Python 3.8 for example):


  ```
  sudo apt-get install python3.8
-```
+  ```

 - **Possible Cause 2**
  
-The soft link that points to the Python does not exist in the **usr/bin** directory.

-![en-us_image_0000001243200677](figures/en-us_image_0000001243200677.png)
+  The soft link that points to the Python does not exist in the **usr/bin** directory.
+
+  ![en-us_image_0000001243200677](figures/en-us_image_0000001243200677.png)

 - **Solution**
  
-Run the following commands to add a soft link:
+
+  Run the following commands to add a soft link:


  ```
@@ -216,7 +237,7 @@ Run the following commands to add a soft link:
  # which python3
  # ln -s /usr/local/bin/python3 python
  # python --version
-```
+  ```

 Example:

@@ -231,11 +252,13 @@ Example:

 - **Possible Causes**
  
-Python 3 is not installed.
+
+  Python 3 is not installed.

 - **Solution**
  
-Run the following command to install Python 3:
+
+  Run the following command to install Python 3:


  ```

--- a/en/device-dev/faqs/faqs-system-applications.md
+++ b/en/device-dev/faqs/faqs-system-applications.md
@@ -181,6 +181,7 @@ Do not include too many elements in an array. Avoid frequent operations on a lar

 - **Symptom**
  
+
 After the **hdc_std list targets** command is executed, **[Empty]** is displayed.

 - **Solution**
@@ -197,7 +198,8 @@ After the **hdc_std list targets** command is executed, **[Empty]** is displayed

 - **Symptom**
  
-After you click **hdc_std.exe**, the file fails to execute.
+
+  After you click **hdc_std.exe**, the file fails to execute.

 - **Solution**