From c90f6a48314c01fc9b77e3169288e1ddf73a27c6 Mon Sep 17 00:00:00 2001
From: Tomas Rezucha <tomas.rezucha@espressif.com>
Date: Fri, 12 Feb 2021 10:18:01 +0100
Subject: [PATCH 1/4] Add 7789 color invert option

---
 lvgl_tft/Kconfig  | 35 ++++++++++++++++++-----------------
 lvgl_tft/st7789.c | 14 ++++++++++----
 lvgl_tft/st7789.h |  1 +
 3 files changed, 29 insertions(+), 21 deletions(-)

diff --git a/lvgl_tft/Kconfig b/lvgl_tft/Kconfig
index f37adb9..0916b69 100644
--- a/lvgl_tft/Kconfig
+++ b/lvgl_tft/Kconfig
@@ -109,7 +109,7 @@ menu "LVGL TFT Display controller"
         bool
         help
             ST7789 display controller.
-            
+
     config LV_TFT_DISPLAY_CONTROLLER_GC9A01
         bool
         help
@@ -211,14 +211,14 @@ menu "LVGL TFT Display controller"
 
     config LV_TFT_DISPLAY_X_OFFSET
         depends on LV_TFT_DISPLAY_OFFSETS
-        int 
+        int
         default 40 if LV_PREDEFINED_DISPLAY_TTGO && (LV_DISPLAY_ORIENTATION_LANDSCAPE || LV_DISPLAY_ORIENTATION_LANDSCAPE_INVERTED)
         default 53 if LV_PREDEFINED_DISPLAY_TTGO && (LV_DISPLAY_ORIENTATION_PORTRAIT  || LV_DISPLAY_ORIENTATION_PORTRAIT_INVERTED)
         default 0
 
     config LV_TFT_DISPLAY_Y_OFFSET
         depends on LV_TFT_DISPLAY_OFFSETS
-        int 
+        int
         default 53  if LV_PREDEFINED_DISPLAY_TTGO && (LV_DISPLAY_ORIENTATION_LANDSCAPE || LV_DISPLAY_ORIENTATION_LANDSCAPE_INVERTED)
         default 40 if LV_PREDEFINED_DISPLAY_TTGO && (LV_DISPLAY_ORIENTATION_PORTRAIT  || LV_DISPLAY_ORIENTATION_PORTRAIT_INVERTED)
         default 0
@@ -284,7 +284,7 @@ menu "LVGL TFT Display controller"
     config LV_TFT_DISPLAY_USER_CONTROLLER_GC9A01
         bool "GC9A01"
             select LV_TFT_DISPLAY_CONTROLLER_GC9A01
-            select LV_TFT_DISPLAY_PROTOCOL_SPI    
+            select LV_TFT_DISPLAY_PROTOCOL_SPI
         config LV_TFT_DISPLAY_USER_CONTROLLER_ST7735S
             bool "ST7735S"
             select LV_TFT_DISPLAY_CONTROLLER_ST7735S
@@ -441,7 +441,7 @@ menu "LVGL TFT Display controller"
         config LV_FT81X_CONFIG_EVE_SUNFLOWER
             bool "EVE_SUNFLOWER"
         config LV_FT81X_CONFIG_EVE_CONNECTEVE
-            bool "EVE_CONNECTEVE"    
+            bool "EVE_CONNECTEVE"
     endchoice
 
     choice
@@ -585,10 +585,11 @@ menu "LVGL TFT Display controller"
             If text is backwards on your display, try enabling this.
 
     config LV_INVERT_COLORS
-        bool "Invert colors in display" if LV_TFT_DISPLAY_CONTROLLER_ILI9341 || LV_TFT_DISPLAY_CONTROLLER_ST7735S || LV_TFT_DISPLAY_CONTROLLER_ILI9481
+        bool "Invert colors in display" if LV_TFT_DISPLAY_CONTROLLER_ILI9341 || LV_TFT_DISPLAY_CONTROLLER_ST7735S || LV_TFT_DISPLAY_CONTROLLER_ILI9481 || LV_TFT_DISPLAY_CONTROLLER_ST7789
         default y if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICKC
         help
             If the colors look inverted on your display, try enabling this.
+            If it didn't help try LVGL configuration -> Swap the 2 bytes of RGB565 color.
 
     config LV_M5STICKC_HANDLE_AXP192
         bool "Handle Backlight and TFT power for M5StickC using AXP192." if LV_PREDEFINED_DISPLAY_M5STICKC || LV_TFT_DISPLAY_CONTROLLER_ST7735S
@@ -769,7 +770,7 @@ menu "LVGL TFT Display controller"
             depends on LV_DISPLAY_USE_SPI_MISO
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             default 19 if LV_PREDEFINED_PINS_TKOALA
             default 0
 
@@ -790,7 +791,7 @@ menu "LVGL TFT Display controller"
             depends on LV_TFT_DISPLAY_SPI_TRANS_MODE_QIO
             range -1 39 if IDF_TARGET_ESP32
             range -1 43 if IDF_TARGET_ESP32S2
-            
+
             default 22 if LV_PREDEFINED_PINS_TKOALA && LV_TFT_DISPLAY_SPI_TRANS_MODE_QIO
             default -1
             help
@@ -801,7 +802,7 @@ menu "LVGL TFT Display controller"
             depends on LV_TFT_DISPLAY_SPI_TRANS_MODE_QIO
             range -1 39 if IDF_TARGET_ESP32
             range -1 43 if IDF_TARGET_ESP32S2
-            
+
             default 21 if LV_PREDEFINED_PINS_TKOALA && LV_TFT_DISPLAY_SPI_TRANS_MODE_QIO
             default -1
             help
@@ -811,7 +812,7 @@ menu "LVGL TFT Display controller"
             int "GPIO for CLK (SCK / Serial Clock)" if LV_TFT_DISPLAY_PROTOCOL_SPI
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             default 18 if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICK
             default 13 if LV_PREDEFINED_DISPLAY_M5STICKC
             default 18 if LV_PREDEFINED_DISPLAY_ATAG
@@ -838,7 +839,7 @@ menu "LVGL TFT Display controller"
             depends on LV_DISPLAY_USE_SPI_CS
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             default 5 if LV_PREDEFINED_PINS_38V1
             default 14 if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICK
             default 5 if LV_PREDEFINED_DISPLAY_M5STICKC
@@ -865,7 +866,7 @@ menu "LVGL TFT Display controller"
             int "GPIO for DC (Data / Command)" if LV_TFT_DISPLAY_PROTOCOL_SPI
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             depends on LV_DISPLAY_USE_DC
             default 19 if LV_PREDEFINED_PINS_38V1
             default 17 if LV_PREDEFINED_PINS_38V4
@@ -887,7 +888,7 @@ menu "LVGL TFT Display controller"
             int "GPIO for Reset" if LV_TFT_DISPLAY_PROTOCOL_SPI
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             default 18 if LV_PREDEFINED_PINS_38V1
             default 25 if LV_PREDEFINED_PINS_38V4
             default 33 if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICK
@@ -908,7 +909,7 @@ menu "LVGL TFT Display controller"
             int "GPIO for Busy" if LV_TFT_DISPLAY_CONTROLLER_IL3820 || LV_TFT_DISPLAY_CONTROLLER_JD79653A || LV_TFT_DISPLAY_CONTROLLER_UC8151D
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             default 35 if LV_TFT_DISPLAY_CONTROLLER_IL3820 || LV_TFT_DISPLAY_CONTROLLER_JD79653A || LV_TFT_DISPLAY_CONTROLLER_UC8151D
             default 35
 
@@ -946,7 +947,7 @@ menu "LVGL TFT Display controller"
             depends on LV_ENABLE_BACKLIGHT_CONTROL
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             default 23 if LV_PREDEFINED_PINS_38V1
             default 26 if LV_PREDEFINED_PINS_38V4
             default 32 if LV_PREDEFINED_DISPLAY_M5STACK
@@ -966,7 +967,7 @@ menu "LVGL TFT Display controller"
             int "GPIO for I2C SDA" if LV_TFT_DISPLAY_PROTOCOL_I2C
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             default 5 if LV_PREDEFINED_DISPLAY_WEMOS_LOLIN
             default 5
 
@@ -977,7 +978,7 @@ menu "LVGL TFT Display controller"
             int "GPIO for I2C SCL" if LV_TFT_DISPLAY_PROTOCOL_I2C
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
-            
+
             default 4 if LV_PREDEFINED_DISPLAY_WEMOS_LOLIN
             default 4
 
diff --git a/lvgl_tft/st7789.c b/lvgl_tft/st7789.c
index 206a622..a6cad3d 100644
--- a/lvgl_tft/st7789.c
+++ b/lvgl_tft/st7789.c
@@ -65,7 +65,13 @@ void st7789_init(void)
         {ST7789_CABCCTRL, {0xBE}, 1},
         {ST7789_MADCTL, {0x00}, 1}, // Set to 0x28 if your display is flipped
         {ST7789_COLMOD, {0x55}, 1},
-	{ST7789_INVON, {0}, 0},
+
+#if ST7789_INVERT_COLORS == 1
+		{ST7789_INVON, {0}, 0}, // set inverted mode
+#else
+ 		{ST7789_INVOFF, {0}, 0}, // set non-inverted mode
+#endif
+
         {ST7789_RGBCTRL, {0x00, 0x1B}, 2},
         {0xF2, {0x08}, 1},
         {ST7789_GAMSET, {0x01}, 1},
@@ -86,7 +92,7 @@ void st7789_init(void)
     gpio_set_direction(ST7789_DC, GPIO_MODE_OUTPUT);
     gpio_pad_select_gpio(ST7789_RST);
     gpio_set_direction(ST7789_RST, GPIO_MODE_OUTPUT);
-    
+
 #if ST7789_ENABLE_BACKLIGHT_CONTROL
     gpio_pad_select_gpio(ST7789_BCKL);
     gpio_set_direction(ST7789_BCKL, GPIO_MODE_OUTPUT);
@@ -219,7 +225,7 @@ static void st7789_set_orientation(uint8_t orientation)
 
     ESP_LOGI(TAG, "Display orientation: %s", orientation_str[orientation]);
 
-    uint8_t data[] = 
+    uint8_t data[] =
     {
 #if CONFIG_LV_PREDEFINED_DISPLAY_TTGO
 	0x60, 0xA0, 0x00, 0xC0
@@ -227,7 +233,7 @@ static void st7789_set_orientation(uint8_t orientation)
 	0xC0, 0x00, 0x60, 0xA0
 #endif
     };
-    
+
     ESP_LOGI(TAG, "0x36 command value: 0x%02X", data[orientation]);
 
     st7789_send_cmd(ST7789_MADCTL);
diff --git a/lvgl_tft/st7789.h b/lvgl_tft/st7789.h
index 1136562..3175329 100644
--- a/lvgl_tft/st7789.h
+++ b/lvgl_tft/st7789.h
@@ -26,6 +26,7 @@ extern "C"
 #define ST7789_BCKL     CONFIG_LV_DISP_PIN_BCKL
 
 #define ST7789_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
+#define ST7789_INVERT_COLORS            CONFIG_LV_INVERT_COLORS
 
 #if CONFIG_LV_BACKLIGHT_ACTIVE_LVL
   #define ST7789_BCKL_ACTIVE_LVL 1

From 4e0667a065aae5f00e159edf466526b7cbb5324f Mon Sep 17 00:00:00 2001
From: Tomas Rezucha <tomas.rezucha@espressif.com>
Date: Fri, 12 Feb 2021 10:20:28 +0100
Subject: [PATCH 2/4] Add editor config for people who use it

---
 .editorconfig | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 .editorconfig

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..47bf019
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,29 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# http://editorconfig.org
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[{*.md,*.rst}]
+trim_trailing_whitespace = false
+
+[{Makefile,*.mk,*.bat}]
+indent_style = tab
+indent_size = 2
+
+[{*.cmake,CMakeLists.txt}]
+indent_style = space
+indent_size = 4
+max_line_length = 120
+
+[{*.sh,*.yml}]
+indent_style = space
+indent_size = 2

From 849afed80d596fa1427dba524611079dc6a49239 Mon Sep 17 00:00:00 2001
From: Tomas Rezucha <tomas.rezucha@espressif.com>
Date: Fri, 12 Feb 2021 10:39:58 +0100
Subject: [PATCH 3/4] Use correct option for color inversion

---
 lvgl_tft/Kconfig   |  2 +-
 lvgl_tft/hx8357.c  | 20 +++++++++++---------
 lvgl_tft/hx8357.h  |  6 ++----
 lvgl_tft/sh1107.c  | 22 +++++++++++-----------
 lvgl_tft/ssd1306.c | 16 ++++++++--------
 5 files changed, 33 insertions(+), 33 deletions(-)

diff --git a/lvgl_tft/Kconfig b/lvgl_tft/Kconfig
index 0916b69..128d910 100644
--- a/lvgl_tft/Kconfig
+++ b/lvgl_tft/Kconfig
@@ -585,7 +585,7 @@ menu "LVGL TFT Display controller"
             If text is backwards on your display, try enabling this.
 
     config LV_INVERT_COLORS
-        bool "Invert colors in display" if LV_TFT_DISPLAY_CONTROLLER_ILI9341 || LV_TFT_DISPLAY_CONTROLLER_ST7735S || LV_TFT_DISPLAY_CONTROLLER_ILI9481 || LV_TFT_DISPLAY_CONTROLLER_ST7789
+        bool "Invert colors in display" if LV_TFT_DISPLAY_CONTROLLER_ILI9341 || LV_TFT_DISPLAY_CONTROLLER_ST7735S || LV_TFT_DISPLAY_CONTROLLER_ILI9481 || LV_TFT_DISPLAY_CONTROLLER_ST7789 || LV_TFT_DISPLAY_CONTROLLER_SSD1306 || LV_TFT_DISPLAY_CONTROLLER_SH1107 || LV_TFT_DISPLAY_CONTROLLER_HX8357
         default y if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICKC
         help
             If the colors look inverted on your display, try enabling this.
diff --git a/lvgl_tft/hx8357.c b/lvgl_tft/hx8357.c
index af899e1..ad180fd 100644
--- a/lvgl_tft/hx8357.c
+++ b/lvgl_tft/hx8357.c
@@ -7,7 +7,7 @@
  * Adafruit 3.5" TFT 320x480 + Touchscreen Breakout
  *    http://www.adafruit.com/products/2050
  *
- * Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers 
+ * Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers
  *    https://www.adafruit.com/product/3651
  *
  */
@@ -177,7 +177,7 @@ void hx8357_init(void)
 	vTaskDelay(120 / portTICK_RATE_MS);
 
 	ESP_LOGI(TAG, "Initialization.");
-	
+
 	//Send all the commands
 	const uint8_t *addr = (displayType == HX8357B) ? initb : initd;
 	uint8_t        cmd, x, numArgs;
@@ -199,9 +199,11 @@ void hx8357_init(void)
 	}
 
 	hx8357_set_rotation(1);
-	
-#if HX8357_INVERT_DISPLAY
-	hx8357_send_cmd(HX8357_INVON);;
+
+#if HX8357_INVERT_COLORS
+	hx8357_send_cmd(HX8357_INVON);
+#else
+    hx8357_send_cmd(HX8357_INVOFF);
 #endif
 
 	hx8357_enable_backlight(true);
@@ -211,7 +213,7 @@ void hx8357_init(void)
 void hx8357_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map)
 {
 	uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
-	
+
 	/* Column addresses  */
 	uint8_t xb[] = {
 	    (uint8_t) (area->x1 >> 8) & 0xFF,
@@ -219,7 +221,7 @@ void hx8357_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * colo
 	    (uint8_t) (area->x2 >> 8) & 0xFF,
 	    (uint8_t) (area->x2) & 0xFF,
 	};
-	
+
 	/* Page addresses  */
 	uint8_t yb[] = {
 	    (uint8_t) (area->y1 >> 8) & 0xFF,
@@ -261,7 +263,7 @@ void hx8357_enable_backlight(bool backlight)
 void hx8357_set_rotation(uint8_t r)
 {
 	r = r & 3; // can't be higher than 3
-	
+
 	switch(r) {
 		case 0:
 			r = MADCTL_MX | MADCTL_MY | MADCTL_RGB;
@@ -276,7 +278,7 @@ void hx8357_set_rotation(uint8_t r)
 			r = MADCTL_MX | MADCTL_MV | MADCTL_RGB;
 		break;
 	}
-	
+
 	hx8357_send_cmd(HX8357_MADCTL);
 	hx8357_send_data(&r, 1);
 }
diff --git a/lvgl_tft/hx8357.h b/lvgl_tft/hx8357.h
index dc51532..6bad32d 100644
--- a/lvgl_tft/hx8357.h
+++ b/lvgl_tft/hx8357.h
@@ -7,7 +7,7 @@
  * Adafruit 3.5" TFT 320x480 + Touchscreen Breakout
  *    http://www.adafruit.com/products/2050
  *
- * Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers 
+ * Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers
  *    https://www.adafruit.com/product/3651
  *
  */
@@ -40,6 +40,7 @@ extern "C" {
 #define HX8357_BCKL CONFIG_LV_DISP_PIN_BCKL
 
 #define HX8357_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
+#define HX8357_INVERT_COLORS            CONFIG_LV_INVERT_COLORS
 
 #if CONFIG_LV_BACKLIGHT_ACTIVE_LVL
   #define HX8357_BCKL_ACTIVE_LVL 1
@@ -47,9 +48,6 @@ extern "C" {
   #define HX8357_BCKL_ACTIVE_LVL 0
 #endif
 
-// if text/images are backwards, try setting this to 1
-#define HX8357_INVERT_DISPLAY CONFIG_LV_INVERT_DISPLAY
-
 
 /*******************
  * HX8357B/D REGS
diff --git a/lvgl_tft/sh1107.c b/lvgl_tft/sh1107.c
index 6fc1d5a..d8d8c84 100644
--- a/lvgl_tft/sh1107.c
+++ b/lvgl_tft/sh1107.c
@@ -62,8 +62,8 @@ void sh1107_init(void)
     	{0x81, {0}, 0},	// Set display contrast
     	{0x2F, {0}, 0},	// ...value
     	{0x20, {0}, 0},	// Set memory mode
-    	{0xA0, {0}, 0},	// Non-rotated display  
-#if defined CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE			
+    	{0xA0, {0}, 0},	// Non-rotated display
+#if defined CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE
     	{0xC8, {0}, 0},	// flipped vertical
 #elif defined CONFIG_LV_DISPLAY_ORIENTATION_PORTRAIT
     	{0xC7, {0}, 0},	// flipped vertical
@@ -82,11 +82,11 @@ void sh1107_init(void)
     	{0xDA, {0}, 0},	// Set com pins
     	{0x12, {0}, 0},	// ...value
     	{0xA4, {0}, 0},	// output ram to display
-#if defined CONFIG_LV_INVERT_DISPLAY
+#if defined CONFIG_LV_INVERT_COLORS
     	{0xA7, {0}, 0},	// inverted display
 #else
     	{0xA6, {0}, 0},	// Non-inverted display
-#endif 
+#endif
     	{0xAF, {0}, 0},	// Turn display on
         {0, {0}, 0xff},
 	};
@@ -116,14 +116,14 @@ void sh1107_init(void)
 }
 
 void sh1107_set_px_cb(struct _disp_drv_t * disp_drv, uint8_t * buf, lv_coord_t buf_w, lv_coord_t x, lv_coord_t y,
-        lv_color_t color, lv_opa_t opa) 
+        lv_color_t color, lv_opa_t opa)
 {
 	/* buf_w will be ignored, the configured CONFIG_LV_DISPLAY_HEIGHT and _WIDTH,
-	   and CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE and _PORTRAIT will be used. */ 		
+	   and CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE and _PORTRAIT will be used. */
     uint16_t byte_index = 0;
     uint8_t  bit_index = 0;
 
-#if defined CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE			
+#if defined CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE
 	byte_index = y + (( x>>3 ) * LV_VER_RES_MAX);
 	bit_index  = x & 0x7;
 #elif defined CONFIG_LV_DISPLAY_ORIENTATION_PORTRAIT
@@ -146,10 +146,10 @@ void sh1107_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * colo
     uint32_t size = 0;
     void *ptr;
 
-#if defined CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE		
+#if defined CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE
     row1 = area->x1>>3;
     row2 = area->x2>>3;
-#else 
+#else
     row1 = area->y1>>3;
     row2 = area->y2>>3;
 #endif
@@ -158,9 +158,9 @@ void sh1107_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * colo
 	    sh1107_send_cmd(0x00 | columnLow);          // Set Lower Column Start Address for Page Addressing Mode
 	    sh1107_send_cmd(0xB0 | i);                  // Set Page Start Address for Page Addressing Mode
 	    size = area->y2 - area->y1 + 1;
-#if defined CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE		
+#if defined CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE
         ptr = color_map + i * LV_VER_RES_MAX;
-#else 
+#else
         ptr = color_map + i * LV_HOR_RES_MAX;
 #endif
         if(i != row2){
diff --git a/lvgl_tft/ssd1306.c b/lvgl_tft/ssd1306.c
index 79e5b38..a668f1c 100644
--- a/lvgl_tft/ssd1306.c
+++ b/lvgl_tft/ssd1306.c
@@ -3,10 +3,10 @@
  *
  * Code from https://github.com/yanbe/ssd1306-esp-idf-i2c.git is used as a starting point,
  * in addition to code from https://github.com/espressif/esp-iot-solution.
- * 
+ *
  * Definitions are borrowed from:
  * http://robotcantalk.blogspot.com/2015/03/interfacing-arduino-with-ssd1306-driven.html
- * 
+ *
  * For LVGL the forum has been used, in particular: https://blog.littlevgl.com/2019-05-06/oled
  */
 
@@ -113,7 +113,7 @@ void ssd1306_init(void)
 
     uint8_t display_mode = 0;
 
-#if defined CONFIG_LV_INVERT_DISPLAY
+#if defined CONFIG_LV_INVERT_COLORS
     display_mode = OLED_CMD_DISPLAY_INVERTED;
 #else
     display_mode = OLED_CMD_DISPLAY_NORMAL;
@@ -130,7 +130,7 @@ void ssd1306_init(void)
         0xFF,
         OLED_CMD_DISPLAY_ON
     };
-    
+
     uint8_t err = send_data(NULL, conf, sizeof(conf));
     assert(0 == err);
 }
@@ -213,7 +213,7 @@ static uint8_t send_data(lv_disp_drv_t *disp_drv, void *bytes, size_t bytes_len)
     uint8_t *data = (uint8_t *) bytes;
 
     i2c_cmd_handle_t cmd = i2c_cmd_link_create();
-    
+
     i2c_master_start(cmd);
     i2c_master_write_byte(cmd, (OLED_I2C_ADDRESS << 1) | I2C_MASTER_WRITE, true);
 
@@ -222,7 +222,7 @@ static uint8_t send_data(lv_disp_drv_t *disp_drv, void *bytes, size_t bytes_len)
     }
 
     i2c_master_stop(cmd);
-    
+
     /* Send queued commands */
     err = i2c_master_cmd_begin(DISP_I2C_PORT, cmd, 10 / portTICK_PERIOD_MS);
     i2c_cmd_link_delete(cmd);
@@ -234,7 +234,7 @@ static uint8_t send_pixels(lv_disp_drv_t *disp_drv, void *color_buffer, size_t b
 {
     (void) disp_drv;
     esp_err_t err;
-	
+
     i2c_cmd_handle_t cmd = i2c_cmd_link_create();
     i2c_master_start(cmd);
     i2c_master_write_byte(cmd, (OLED_I2C_ADDRESS << 1) | I2C_MASTER_WRITE, true);
@@ -242,7 +242,7 @@ static uint8_t send_pixels(lv_disp_drv_t *disp_drv, void *color_buffer, size_t b
     i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_DATA_STREAM, true);
     i2c_master_write(cmd, (uint8_t *) color_buffer, buffer_len, true);
     i2c_master_stop(cmd);
-    
+
     /* Send queued commands */
     err = i2c_master_cmd_begin(DISP_I2C_PORT, cmd, 10 / portTICK_PERIOD_MS);
     i2c_cmd_link_delete(cmd);

From 9326e16449357d1e6daff9705d1e4f39008e4d7c Mon Sep 17 00:00:00 2001
From: Tomas Rezucha <tomas.rezucha@espressif.com>
Date: Fri, 12 Feb 2021 10:47:05 +0100
Subject: [PATCH 4/4] Show deprecated option only for RA8875

---
 lvgl_tft/Kconfig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lvgl_tft/Kconfig b/lvgl_tft/Kconfig
index 128d910..4930717 100644
--- a/lvgl_tft/Kconfig
+++ b/lvgl_tft/Kconfig
@@ -579,8 +579,8 @@ menu "LVGL TFT Display controller"
         default 2
 
     config LV_INVERT_DISPLAY
-        bool "IN DEPRECATION - Invert display."
-        default y if LV_PREDEFINED_DISPLAY_M5STACK
+        bool "IN DEPRECATION - Invert display." if LV_TFT_DISPLAY_CONTROLLER_RA8875
+        default n
         help
             If text is backwards on your display, try enabling this.