rg_display: Wait a bit longer before turning on the backlight

Author: ducalex

components/retro-go/drivers/display/ili9341.h

@@ -250,10 +250,6 @@ static void lcd_init(void)
     ILI9341_CMD(0x11);  // Exit Sleep
     rg_usleep(10 * 1000);// Wait 10ms after sleep out
     ILI9341_CMD(0x29);  // Display on
-
-    rg_display_clear(C_BLACK);
-    rg_usleep(10 * 1000);
-    lcd_set_backlight(config.backlight);
 }
 
 static void lcd_deinit(void)

components/retro-go/rg_display.c

@@ -582,6 +582,7 @@ void rg_display_clear(uint16_t color_le)
 void rg_display_deinit(void)
 {
     rg_task_send(display_task_queue, &(rg_task_msg_t){.type = RG_TASK_MSG_STOP});
+    // lcd_set_backlight(0);
     lcd_deinit();
     RG_LOGI("Display terminated.\n");
 }
@@ -609,6 +610,9 @@ void rg_display_init(void)
     display.screen.width -= display.screen.margins.left + display.screen.margins.right;
     display.screen.height -= display.screen.margins.top + display.screen.margins.bottom;
     lcd_init();
+    rg_display_clear(C_BLACK);
+    rg_task_delay(80); // Wait for the screen be cleared before turning on the backlight (40ms doesn't seem to be enough...)
+    lcd_set_backlight(config.backlight);
     display_task_queue = rg_task_create("rg_display", &display_task, NULL, 4 * 1024, RG_TASK_PRIORITY_6, 1);
     if (config.border_file)
         load_border_file(config.border_file);