From e4ea2560c14255e1525068419fd1206fe395fa5c Mon Sep 17 00:00:00 2001
From: imi415 <imi415.public@gmail.com>
Date: Sat, 26 Jun 2021 11:07:01 +0800
Subject: [PATCH] Added backlight callback.

---
 st7789_lcd.c | 6 ++++++
 st7789_lcd.h | 1 +
 2 files changed, 7 insertions(+)

diff --git a/st7789_lcd.c b/st7789_lcd.c
index 8e7c02e..c972396 100644
--- a/st7789_lcd.c
+++ b/st7789_lcd.c
@@ -192,6 +192,12 @@ st7789_ret_t st7789_lcd_display(st7789_lcd_t *lcd, uint8_t display_on) {
     if(lcd->cb.write_cmd_cb(lcd->user_data, &command, 0x01) != ST7789_OK) {
         return ST7789_ERROR;
     }
+
+    if(lcd->cb.backlight_cb(lcd->user_data, display_on) != ST7789_OK) {
+        return ST7789_ERROR;
+    }
+
+    return ST7789_OK;
 }
 
 st7789_ret_t st7789_lcd_config(st7789_lcd_t *lcd, st7789_config_t *config) {
diff --git a/st7789_lcd.h b/st7789_lcd.h
index 293b058..a65f9e6 100644
--- a/st7789_lcd.h
+++ b/st7789_lcd.h
@@ -24,6 +24,7 @@ typedef enum {
 
 typedef struct {
     st7789_ret_t (*reset_cb)(void *handle);
+    st7789_ret_t (*backlight_cb)(void *handle, uint8_t on);
     st7789_ret_t (*write_cmd_cb)(void *handle, uint8_t *cmd, uint8_t len);
     st7789_ret_t (*write_data_cb)(void *handle, uint8_t *data, uint32_t len);
 } st7789_cb_t;