33 lines
821 B
Markdown
33 lines
821 B
Markdown
# LCD backlight test
|
|
|
|
This program only turns on the LCD backlight GPIO.
|
|
|
|
It does not initialize SPI.
|
|
It does not initialize the LCD controller.
|
|
It does not write any pixel data.
|
|
|
|
Set `LCD_PIN_BL` to the GPIO connected to the LCD `BLK` pin.
|
|
Set `LCD_BL_ACTIVE_HIGH` to match the board.
|
|
|
|
Build and flash:
|
|
|
|
```powershell
|
|
idf.py menuconfig
|
|
idf.py build
|
|
idf.py -p COMx flash
|
|
```
|
|
|
|
Expected result: the LCD backlight turns on and stays on.
|
|
|
|
## Update image data
|
|
|
|
Use this script to generate `main/eye_image.c` and `main/eye_image.h` from an
|
|
image or GIF:
|
|
|
|
```powershell
|
|
C:\Users\28036\.cache\codex-runtimes\codex-primary-runtime\dependencies\python\python.exe D:\esp\Project\lcd\tools\gif_to_eye_image.py D:\esp\Project\lcd\source\eye2.bmp
|
|
```
|
|
|
|
For GIF files, use `--max-frames` or `--step` if the generated file is too
|
|
large.
|