Provide README section about backlight control

This commit is contained in:
Tomas Rezucha 2021-08-04 09:38:05 +02:00
parent 11c240daca
commit 2d6ea1330c
2 changed files with 14 additions and 1 deletions

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@ -7,6 +7,7 @@ For a ready to use ESP32 project take look at the [lv_port_esp32](https://github
- [Supported indev controllers](#supported-indev-controllers)
- [Support for predefined development kits](#support-for-predefined-development-kits)
- [Thread-safe I2C with I2C Manager](#thread-safe-i2c-with-i2c-manager)
- [Backlight control](#backlight-control)
**NOTE:** You need to set the display horizontal and vertical size, color depth and
swap of RGB565 color on the LVGL configuration menuconfig (it's not handled automatically).
@ -79,3 +80,14 @@ talk to devices on the I2C ports without getting in each other's way. These driv
use a built-in copy of I2C Manager to talk to the I2C port, but you can also use
the I2C Manager component itself and have others play nice with LVGL and vice-versa.
[Click here](i2c_manager/README.md) for details.
## Backlight control
Control of LCD's backlight is provided by separate module that is independent from the display driver.
Configuration of the backlight controller can be found in menuconfig `LVGL ESP Drivers -> LVGL TFT Display controller`.
There are three modes of operation:
1. Off - No backlight control
2. Switch - Allows ON/OFF control
3. PWM - Allows brightness control (by Pulse-Width-Modulated signal)

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@ -27,6 +27,7 @@ typedef void * disp_backlight_h;
/**
* @brief Configuration structure of backlight controller
*
* Must be passed to disp_backlight_new() for correct configuration
*/
typedef struct {
bool pwm_control;