nuttxpr commented on PR #16100:
URL: https://github.com/apache/nuttx/pull/16100#issuecomment-2766647759

   [**\[Experimental Bot, please feedback 
here\]**](https://github.com/search?q=repo%3Aapache%2Fnuttx+13552&type=issues)
   
   
   
   The PR summary is insufficient and lacks critical details. The testing 
section is also weak. Here's a breakdown of what's missing and how to improve 
it:
   
   **Summary Issues:**
   
   * **Vague Descriptions:** Phrases like "Init configuration for LVGL" are too 
general.  Specify *what* configurations were changed.  Provide specific 
filenames and functions modified.
   * **Missing Technical Detail:** How does the LCD registration work? What 
driver is used? What LVGL configuration options were set?  What changes were 
made to the board configuration file (e.g., `.config` or `defconfig`)?
   * **Unclear "Why":** While it mentions enabling LVGL, it doesn't clearly 
state *why* this is necessary or beneficial. Is it a new feature request? Does 
it fix a bug?  Does it improve performance?
   * **Missing Issue References:** If this relates to an issue, provide links.  
Even if it doesn't relate to a pre-existing issue, consider creating one for 
tracking purposes.
   
   **Impact Issues:**
   
   * **Incomplete Impact Assessment:**  Only `boards/szpi-esp32s3` is listed 
under Impact.  The screenshot clearly shows a user-visible change, so "Impact 
on user" should be YES with a description. "Impact on documentation" is also 
YES and needs details on what documentation was added.
   * **Missing Detail:**  Simply stating the affected directory isn't enough. 
Be specific about *how* these areas are impacted.
   
   
   **Testing Issues:**
   
   * **Insufficient Logs:** The logs only show that LVGL starts.  They don't 
demonstrate that the LCD is functioning correctly.  Include logs that verify 
the display shows the expected output.  For example, mention specific elements 
rendered on the screen.
   * **Missing "Before" Logs:**  "Testing logs before change" is empty.  This 
makes it impossible to compare the behavior before and after the change.  Show 
what happens *without* the changes (likely a build failure or lack of LVGL 
functionality).
   * **Limited Testing Scope:** Selftest is good, but it's not enough.  Did you 
test different LVGL functionalities?  Did you test different screen resolutions 
or orientations (if applicable)?  Did you test on real hardware, not just a 
simulator?
   
   
   **Improved PR Description (Example):**
   
   ## Summary
   
   This PR enables LVGL support for the szpi-esp32s3 board.  This allows users 
to leverage the LVGL graphics library for creating rich user interfaces on the 
board's LCD.  This change was motivated by [Issue # (if applicable)].
   
   Specifically, this PR:
   
   * Registers the LCD device `/dev/lcd0` using the `st7789` driver in 
`boards/szpi-esp32s3/src/lckfb_szpi-esp32s3.c`.  The `board_lcd_initialize` 
function now initializes the ST7789 display controller and registers the 
framebuffer driver.
   * Configures LVGL in `boards/szpi-esp32s3/configs/lvgl/defconfig`. The 
following LVGL configuration options were enabled: `CONFIG_LV_COLOR_DEPTH=16`, 
`CONFIG_LV_VDB_SIZE=...`, etc. (List all relevant config changes).
   * Adds documentation for configuring NuttShell and enabling LVGL in 
`Documentation/szpi-esp32s3.txt`.
   
   ## Impact
   
   * **Is new feature added?** YES. LVGL support is a new feature for the 
szpi-esp32s3 board.
   * **Impact on user:** YES.  Users can now utilize LVGL to create graphical 
applications.  They will need to select the `lvgl` configuration when building 
NuttX for this board.
   * **Impact on build:** YES.  A new configuration (`lvgl`) has been added for 
the szpi-esp32s3 board.  Building this configuration requires LVGL to be 
available.
   * **Impact on hardware:** YES.  This specifically affects the szpi-esp32s3 
board and its ST7789 LCD.
   * **Impact on documentation:** YES.  The documentation has been updated to 
include instructions for using the new LVGL configuration.  See 
`Documentation/szpi-esp32s3.txt`.
   * **Impact on security:** NO.
   * **Impact on compatibility:** NO.
   
   
   ## Testing
   
   **Build Host:** Linux (Ubuntu 20.04), x86_64, GCC 9.4.0
   **Target:** ESP32-S3 (sim and hardware), szpi-esp32s3:lvgl
   
   **Testing logs before change:**
   
   ```
   $ ./tools/configure.sh -l lckfb-szpi-esp32s3:lvgl
   $ make
   ... build errors due to missing LCD initialization ...
   ```
   
   **Testing logs after change:**
   
   ```
   $ ./tools/configure.sh -l lckfb-szpi-esp32s3:lvgl
   $ make flash ESPTOOL_PORT=/dev/ttyUSB0
   ... successful build and flash ...
   
   nsh> lvgldemo
   ... (previous logs) ...
   [LVGL] [User]   (6.600, +20)      lv_demo_widgets: Screen initialized 
lv_demo_widgets.c:263
   ...  logs showing specific widgets displayed, e.g., button at coordinates 
(x,y), label showing "Hello World", etc. ...
   ```
   
   
   By providing more specific details and thorough testing results, the PR will 
be much easier to review and merge.  Remember, the goal is to clearly 
communicate the changes and their impact, making it easy for others to 
understand and validate your work.
   


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