lvgl-v8/UART/SimplUART/lvgl/examples/arduino/ESP32_TFT_eSPI/README.md

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2022-11-19 17:13:40 +00:00
# Example for lv_arduino using a slider
This example has the screen set to 320x480 (ILI9488), change this by altering the following lines in the main ino file:
```C
int screenWidth = 480;
int screenHeight = 320;
```
## Backlight
Change pin 32 to your preferred backlight pin using a PNP transistor (2N3906) or remove the following code and connect directly to +ve:
```C
ledcSetup(10, 5000/*freq*/, 10 /*resolution*/);
ledcAttachPin(32, 10);
analogReadResolution(10);
ledcWrite(10,768);
```
## Theme selection
Change the following to change the theme:
```C
lv_theme_t * th = lv_theme_night_init(210, NULL); //Set a HUE value and a Font for the Night Theme
lv_theme_set_current(th);
```
## Calibration
This is using the bodmer tft_espi driver for touch. To correctly set the calibration load the calibration sketch and replace the following with your values:
```C
uint16_t calData[5] = { 275, 3620, 264, 3532, 1 };
```
## Screen rotation
Check the following if you need to alter your screen rotation:
```C
tft.setRotation(3);
```