Merge branch 'lvgl:master' into master

.gitignore

@@ -50,3 +50,9 @@ modules.order
 Module.symvers
 Mkfile.old
 dkms.conf
+
+# MacOS
+.DS_Store
+
+# ESP-IDF build dir
+build

CMakeLists.txt

@@ -45,6 +45,8 @@ elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_RA8875)
     list(APPEND SOURCES "lvgl_tft/ra8875.c")
 elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_GC9A01)
     list(APPEND SOURCES "lvgl_tft/GC9A01.c")
+elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C)
+    list(APPEND SOURCES "lvgl_tft/ili9163c.c")
 else()
     message(WARNING "LVGL ESP32 drivers: Display controller not defined.")
 endif()

README.md

@@ -17,6 +17,7 @@ swap of RGB565 color on the LVGL configuration menuconfig (it's not handled auto
 | Display Controller                          | Type       | Interface              | Color depth (LV_COLOR_DEPTH) | Swap RGB565 color (LV_COLOR_16_SWAP)   |
 |---------------------------------------------|------------|------------------------|------------------------------|----------------------------------------|
 | ILI9341                                     | TFT        | SPI                    | 16: RGB565                   | Yes                                    |
+| ILI9163C                                    | TFT        | SPI                    | 16: RGB565                   | Yes                                    |
 | ILI9486                                     | TFT        | SPI                    | 16: RGB565                   | Yes                                    |
 | ILI9488                                     | TFT        | SPI                    | 16: RGB565                   | No                                     |
 | HX8357B/HX8357D                             | TFT        | SPI                    | 16: RGB565                   | Yes                                    |
@@ -51,6 +52,7 @@ and sets the gpio numbers for the interface.
 |---------------------------|-----------------------|-----------|-----------|-----------|
 | ESP Wrover Kit v4.1       | ILI9341               | SPI       | 240       | 320       |
 | M5Stack                   | ILI9341               | SPI       | 240       | 320       |
+| M5Core2                   | ILI9341               | SPI       | 240       | 320       |
 | M5Stick                   | SH1107                | SPI       | -         | -         |
 | M5StickC                  | ST7735S               | SPI       | 80        | 160       |
 | Adafruit 3.5 Featherwing  | HX8357                | SPI       | 480       | 320       |

lvgl_helpers.h

@@ -79,6 +79,8 @@ extern "C" {
 #define DISP_BUF_SIZE ((LV_VER_RES_MAX * LV_VER_RES_MAX) / 8) // 5KB
 #elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_UC8151D)
 #define DISP_BUF_SIZE ((LV_VER_RES_MAX * LV_VER_RES_MAX) / 8) // 2888 bytes
+#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C
+#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
 #else
 #error "No display controller selected"
 #endif

lvgl_spi_conf.h

@@ -130,7 +130,8 @@ extern "C" {
       defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_SH1107)   || \
       defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_FT81X)    || \
       defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_IL3820)   || \
-      defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_JD79653A)
+      defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_JD79653A) || \
+      defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C)
 
 #define SPI_BUS_MAX_TRANSFER_SZ (DISP_BUF_SIZE * 2)
 
@@ -157,7 +158,9 @@ extern "C" {
 #define SPI_TFT_CLOCK_SPEED_HZ  (40*1000*1000)
 #elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9341)
 #define SPI_TFT_CLOCK_SPEED_HZ  (40*1000*1000)
-#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_FT81X)
+#elif defined(CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C)
+#define SPI_TFT_CLOCK_SPEED_HZ (40 * 1000 * 1000)
+#elif defined(CONFIG_LV_TFT_DISPLAY_CONTROLLER_FT81X)
 #define SPI_TFT_CLOCK_SPEED_HZ  (32*1000*1000)
 #else
 #define SPI_TFT_CLOCK_SPEED_HZ  (40*1000*1000)

lvgl_tft/EVE_commands.c

@@ -144,7 +144,7 @@ void DELAY_MS(uint16_t ms)
 	vTaskDelay(ms / portTICK_PERIOD_MS);
 }
 
-
+#if EVE_USE_PDN
 void EVE_pdn_set(void)
 {
 	gpio_set_level(EVE_PDN, 0);	/* Power-Down low */
@@ -155,7 +155,7 @@ void EVE_pdn_clear(void)
 {
 	gpio_set_level(EVE_PDN, 1);	/* Power-Down high */
 }
-
+#endif
 
 void spi_acquire()
 {
@@ -841,11 +841,13 @@ uint8_t EVE_init(void)
 	uint8_t chipid = 0;
 	uint16_t timeout = 0;
 
+#if EVE_USE_PDN
 	EVE_pdn_set();
 	DELAY_MS(6); /* minimum time for power-down is 5ms */
 
 	EVE_pdn_clear();
 	DELAY_MS(21); /* minimum time to allow from rising PD_N to first access is 20ms */
+#endif
 
 	/*	EVE_cmdWrite(EVE_CORERST,0); */ /* reset, only required for warm-start if PowerDown line is not used */
 

lvgl_tft/EVE_commands.h

@@ -39,8 +39,12 @@ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR TH
 #define BLOCK_TRANSFER_SIZE 3840		// block transfer size when write data to CMD buffer
 
 void DELAY_MS(uint16_t ms);
+
+#if EVE_USE_PDN
 void EVE_pdn_set(void);
 void EVE_pdn_clear(void);
+#endif
+
 void spi_acquire();
 void spi_release();
 

lvgl_tft/EVE_config.h

@@ -44,11 +44,12 @@ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR TH
 
 #include "FT81x.h"
 
-#define EVE_CLK		DISP_SPI_CLK				// orange
+#define EVE_CLK		    DISP_SPI_CLK				    // orange
-#define EVE_MISO	DISP_SPI_MISO				// yellow
+#define EVE_MISO	    DISP_SPI_MISO				    // yellow
-#define EVE_MOSI	DISP_SPI_MOSI				// green
+#define EVE_MOSI	    DISP_SPI_MOSI				    // green
-#define EVE_CS 		DISP_SPI_CS					// blue
+#define EVE_CS 		    DISP_SPI_CS					    // blue
-#define EVE_PDN		CONFIG_LV_DISP_PIN_RST		// grey
+#define EVE_PDN		    CONFIG_LV_DISP_PIN_RST	// grey
+#define EVE_USE_PDN		CONFIG_LV_DISP_USE_RST
 
 #define SPI_TRANSER_SIZE (DISP_BUF_SIZE * (LV_COLOR_DEPTH / 8))
 

lvgl_tft/FT81x.c

@@ -262,9 +262,15 @@ void TFT_bitmap_display(void)
 
 void FT81x_init(void)
 {
+#if EVE_USE_PDN
 	gpio_pad_select_gpio(EVE_PDN);
+#endif
+
 	gpio_set_level(EVE_CS, 1);
+
+#if EVE_USE_PDN
 	gpio_set_direction(EVE_PDN, GPIO_MODE_OUTPUT);
+#endif
 
 	spi_acquire();
 

lvgl_tft/GC9A01.c

@@ -124,18 +124,24 @@ void GC9A01_init(void)
 	//Initialize non-SPI GPIOs
         gpio_pad_select_gpio(GC9A01_DC);
 	gpio_set_direction(GC9A01_DC, GPIO_MODE_OUTPUT);
+
+#if GC9A01_USE_RST
         gpio_pad_select_gpio(GC9A01_RST);
 	gpio_set_direction(GC9A01_RST, GPIO_MODE_OUTPUT);
+#endif
 
 #if GC9A01_ENABLE_BACKLIGHT_CONTROL
     gpio_pad_select_gpio(GC9A01_BCKL);
     gpio_set_direction(GC9A01_BCKL, GPIO_MODE_OUTPUT);
 #endif
+
+#if GC9A01_USE_RST
 	//Reset the display
 	gpio_set_level(GC9A01_RST, 0);
 	vTaskDelay(100 / portTICK_RATE_MS);
 	gpio_set_level(GC9A01_RST, 1);
 	vTaskDelay(100 / portTICK_RATE_MS);
+#endif
 
 	ESP_LOGI(TAG, "Initialization.");
 

lvgl_tft/GC9A01.h

@@ -25,9 +25,10 @@ extern "C" {
 /*********************
  *      DEFINES
  *********************/
-#define GC9A01_DC   CONFIG_LV_DISP_PIN_DC
+#define GC9A01_DC       CONFIG_LV_DISP_PIN_DC
-#define GC9A01_RST  CONFIG_LV_DISP_PIN_RST
+#define GC9A01_RST      CONFIG_LV_DISP_PIN_RST
-#define GC9A01_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define GC9A01_USE_RST  CONFIG_LV_DISP_USE_RST
+#define GC9A01_BCKL     CONFIG_LV_DISP_PIN_BCKL
 
 #define GC9A01_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
 

lvgl_tft/Kconfig

@@ -21,6 +21,10 @@ menu "LVGL TFT/Epaper Display controller"
             bool "M5Stack"
             select LV_TFT_DISPLAY_CONTROLLER_ILI9341
             select LV_TFT_DISPLAY_PROTOCOL_SPI
+        config LV_PREDEFINED_DISPLAY_M5CORE2
+        	bool "M5Core2"
+            select LV_TFT_DISPLAY_CONTROLLER_ILI9341
+            select LV_TFT_DISPLAY_PROTOCOL_SPI
         config LV_PREDEFINED_DISPLAY_M5STICK
             bool "M5Stick"
             select LV_TFT_DISPLAY_CONTROLLER_SH1107
@@ -173,6 +177,11 @@ menu "LVGL TFT/Epaper Display controller"
         help
             ST7796S display controller.
 
+    config LV_TFT_DISPLAY_CONTROLLER_ILI9163C
+        bool
+        help
+            ILI9163C display controller.
+
     # Display controller communication protocol
     #
     # This symbols define the communication protocol used by the
@@ -349,6 +358,10 @@ menu "LVGL TFT/Epaper Display controller"
             bool "RA8875"
             select LV_TFT_DISPLAY_CONTROLLER_RA8875
             select LV_TFT_DISPLAY_PROTOCOL_SPI
+        config LV_TFT_DISPLAY_USER_CONTROLLER_ILI9163C
+            bool "ILI9163C"
+            select LV_TFT_DISPLAY_CONTROLLER_ILI9163C
+            select LV_TFT_DISPLAY_PROTOCOL_SPI
     endchoice
 
     config CUSTOM_DISPLAY_BUFFER_SIZE
@@ -608,7 +621,7 @@ menu "LVGL TFT/Epaper 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 || LV_TFT_DISPLAY_CONTROLLER_SSD1306 || LV_TFT_DISPLAY_CONTROLLER_SH1107 || LV_TFT_DISPLAY_CONTROLLER_HX8357
+        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 || LV_TFT_DISPLAY_CONTROLLER_GC9A01 || LV_TFT_DISPLAY_CONTROLLER_ILI9163C
         default y if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICKC
         help
             If the colors look inverted on your display, try enabling this.
@@ -785,6 +798,7 @@ menu "LVGL TFT/Epaper Display controller"
             default 23 if LV_PREDEFINED_DISPLAY_WROVER4
             default 23 if LV_PREDEFINED_DISPLAY_ATAG
             default 23 if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICK
+            default 23 if LV_PREDEFINED_DISPLAY_M5CORE2
             default 15 if LV_PREDEFINED_DISPLAY_M5STICKC
             default 18 if LV_PREDEFINED_DISPLAY_ADA_FEATHERWING
             default 23 if LV_PREDEFINED_PINS_TKOALA
@@ -799,6 +813,7 @@ menu "LVGL TFT/Epaper Display controller"
         config LV_DISPLAY_USE_SPI_MISO
             bool "GPIO for MISO (Master In Slave Out)" if LV_TFT_DISPLAY_PROTOCOL_SPI
             default y if LV_PREDEFINED_PINS_TKOALA
+            default y if LV_PREDEFINED_DISPLAY_M5CORE2
             help
                 Enable the MISO signal to control the display. You can disable
                 it when the display does not need MISO signal to be controlled.
@@ -810,6 +825,7 @@ menu "LVGL TFT/Epaper Display controller"
             range 0 43 if IDF_TARGET_ESP32S2
 
             default 19 if LV_PREDEFINED_PINS_TKOALA
+            default 38 if LV_PREDEFINED_DISPLAY_M5CORE2
             default 0
 
             help
@@ -852,6 +868,7 @@ menu "LVGL TFT/Epaper Display controller"
             range 0 43 if IDF_TARGET_ESP32S2
 
             default 18 if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICK
+            default 18 if LV_PREDEFINED_DISPLAY_M5CORE2
             default 13 if LV_PREDEFINED_DISPLAY_M5STICKC
             default 18 if LV_PREDEFINED_DISPLAY_ATAG
             default 19 if LV_PREDEFINED_DISPLAY_WROVER4
@@ -880,6 +897,7 @@ menu "LVGL TFT/Epaper Display controller"
 
             default 5 if LV_PREDEFINED_PINS_38V1
             default 14 if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICK
+            default 5 if LV_PREDEFINED_DISPLAY_M5CORE2
             default 5 if LV_PREDEFINED_DISPLAY_M5STICKC
             default 22 if LV_PREDEFINED_DISPLAY_WROVER4
             default 15 if LV_PREDEFINED_DISPLAY_ADA_FEATHERWING
@@ -909,6 +927,7 @@ menu "LVGL TFT/Epaper Display controller"
             default 19 if LV_PREDEFINED_PINS_38V1
             default 17 if LV_PREDEFINED_PINS_38V4
             default 27 if LV_PREDEFINED_DISPLAY_M5STACK || LV_PREDEFINED_DISPLAY_M5STICK
+            default 15 if LV_PREDEFINED_DISPLAY_M5CORE2
             default 23 if LV_PREDEFINED_DISPLAY_M5STICKC
             default 21 if LV_PREDEFINED_DISPLAY_WROVER4
             default 21 if LV_PREDEFINED_DISPLAY_WT32_SC01
@@ -922,8 +941,22 @@ menu "LVGL TFT/Epaper Display controller"
             help
                 Configure the display DC pin here.
 
+        config LV_DISP_USE_RST
+            bool "Use a GPIO for resetting the display" if LV_TFT_DISPLAY_PROTOCOL_SPI
+            default n if LV_PREDEFINED_DISPLAY_M5CORE2
+            default y
+            help
+                Enable display reset control. Set this if the reset pin of the
+                display is connected to the host. If this is not set, then it is
+                the user's responsibility to ensure that the display is reset
+                before initialisation.
+                You may want to disable this option because the reset pin is not
+                connected, or is connected to an external component such as the
+                power management IC.
+
         config LV_DISP_PIN_RST
             int "GPIO for Reset" if LV_TFT_DISPLAY_PROTOCOL_SPI && !LV_DISP_ST7789_SOFT_RESET
+            depends on LV_DISP_USE_RST
             range 0 39 if IDF_TARGET_ESP32
             range 0 43 if IDF_TARGET_ESP32S2
 
@@ -959,6 +992,7 @@ menu "LVGL TFT/Epaper Display controller"
                 ( LV_PREDEFINED_DISPLAY_NONE && ! ( LV_TFT_DISPLAY_CONTROLLER_SH1107 || LV_TFT_DISPLAY_CONTROLLER_SSD1306 ) ) \
                 || LV_PREDEFINED_DISPLAY_RPI_MPI3501
             default y if LV_PREDEFINED_DISPLAY_M5STACK
+            default n if LV_PREDEFINED_DISPLAY_M5CORE2
             default y if LV_PREDEFINED_DISPLAY_WROVER4
             default y if LV_PREDEFINED_DISPLAY_ERTFT0356
             default y if LV_PREDEFINED_DISPLAY_TTGO

lvgl_tft/disp_driver.c

@@ -44,6 +44,8 @@ void disp_driver_init(void)
    jd79653a_init();
 #elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_UC8151D
    uc8151d_init();
+#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C
+    ili9163c_init();
 #endif
 }
 
@@ -85,6 +87,8 @@ void disp_driver_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t *
     jd79653a_lv_fb_flush(drv, area, color_map);
 #elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_UC8151D
     uc8151d_lv_fb_flush(drv, area, color_map);
+#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C
+    ili9163c_flush(drv, area, color_map);
 #endif
 }
 

lvgl_tft/disp_driver.h

@@ -54,6 +54,8 @@ extern "C" {
 #include "jd79653a.h"
 #elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_UC8151D
 #include "uc8151d.h"
+#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C
+#include "ili9163c.h"
 #endif
 
 /*********************

lvgl_tft/hx8357.c

@@ -162,19 +162,24 @@ void hx8357_init(void)
 	//Initialize non-SPI GPIOs
         gpio_pad_select_gpio(HX8357_DC);
 	gpio_set_direction(HX8357_DC, GPIO_MODE_OUTPUT);
+
+#if HX8357_USE_RST
         gpio_pad_select_gpio(HX8357_RST);
 	gpio_set_direction(HX8357_RST, GPIO_MODE_OUTPUT);
+#endif
 
 #if HX8357_ENABLE_BACKLIGHT_CONTROL
         gpio_pad_select_gpio(HX8357_BCKL);
 	gpio_set_direction(HX8357_BCKL, GPIO_MODE_OUTPUT);
 #endif
 
+#if HX8357_USE_RST
 	//Reset the display
 	gpio_set_level(HX8357_RST, 0);
 	vTaskDelay(10 / portTICK_RATE_MS);
 	gpio_set_level(HX8357_RST, 1);
 	vTaskDelay(120 / portTICK_RATE_MS);
+#endif
 
 	ESP_LOGI(TAG, "Initialization.");
 

lvgl_tft/hx8357.h

@@ -35,9 +35,10 @@ extern "C" {
  /*********************
  *      DEFINES
  *********************/
-#define HX8357_DC   CONFIG_LV_DISP_PIN_DC
+#define HX8357_DC       CONFIG_LV_DISP_PIN_DC
-#define HX8357_RST  CONFIG_LV_DISP_PIN_RST
+#define HX8357_RST      CONFIG_LV_DISP_PIN_RST
-#define HX8357_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define HX8357_USE_RST  CONFIG_LV_DISP_USE_RST
+#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

lvgl_tft/il3820.c

@@ -198,16 +198,22 @@ void il3820_init(void)
     /* Initialize non-SPI GPIOs */
     gpio_pad_select_gpio(IL3820_DC_PIN);
     gpio_set_direction(IL3820_DC_PIN, GPIO_MODE_OUTPUT);
+
+#if IL3820_USE_RST
     gpio_pad_select_gpio(IL3820_RST_PIN);
     gpio_set_direction(IL3820_RST_PIN, GPIO_MODE_OUTPUT);
+#endif
+
     gpio_pad_select_gpio(IL3820_BUSY_PIN);
     gpio_set_direction(IL3820_BUSY_PIN,  GPIO_MODE_INPUT);
 
+#if IL3820_USE_RST
     /* Harware reset */
     gpio_set_level( IL3820_RST_PIN, 0);
     vTaskDelay(IL3820_RESET_DELAY / portTICK_RATE_MS);
     gpio_set_level( IL3820_RST_PIN, 1);
     vTaskDelay(IL3820_RESET_DELAY / portTICK_RATE_MS);
+#endif
 
     /* Software reset */
     il3820_write_cmd(IL3820_CMD_SW_RESET, NULL, 0);

lvgl_tft/il3820.h

@@ -28,6 +28,7 @@ extern "C"
 
 #define IL3820_DC_PIN           CONFIG_LV_DISP_PIN_DC
 #define IL3820_RST_PIN          CONFIG_LV_DISP_PIN_RST
+#define IL3820_USE_RST          CONFIG_LV_DISP_USE_RST
 #define IL3820_BUSY_PIN         CONFIG_LV_DISP_PIN_BUSY
 #define IL3820_BUSY_LEVEL       1
 

lvgl_tft/ili9163c.c

@@ -0,0 +1,270 @@
+/**
+ * @file ILI9163C.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "ili9163c.h"
+#include "disp_spi.h"
+#include "driver/gpio.h"
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "assert.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define TAG "ILI9163C"
+
+// ILI9163C specific commands used in init
+#define ILI9163C_NOP 0x00
+#define ILI9163C_SWRESET 0x01
+#define ILI9163C_RDDID 0x04
+#define ILI9163C_RDDST 0x09
+
+#define ILI9163C_SLPIN 0x10
+#define ILI9163C_SLPOUT 0x11
+#define ILI9163C_PTLON 0x12
+#define ILI9163C_NORON 0x13
+
+#define ILI9163C_INVOFF 0x20
+#define ILI9163C_INVON 0x21
+#define ILI9163C_CMD_GAMST 0x26
+#define ILI9163C_DISPOFF 0x28
+#define ILI9163C_DISPON 0x29
+#define ILI9163C_CASET 0x2A
+#define ILI9163C_RASET 0x2B
+#define ILI9163C_RAMWR 0x2C
+#define ILI9163C_COLORSET 0x2D
+#define ILI9163C_RAMRD 0x2E
+
+#define ILI9163C_PTLAR 0x30
+#define ILI9163C_VSCRDEF 0x33
+#define ILI9163C_COLMOD 0x3A
+#define ILI9163C_MADCTL 0x36
+#define ILI9163C_VSCRSADD 0x37
+
+#define ILI9163C_FRMCTR1 0xB1
+#define ILI9163C_FRMCTR2 0xB2
+#define ILI9163C_FRMCTR3 0xB3
+#define ILI9163C_INVCTR 0xB4
+#define ILI9163C_DISSET5 0xB6
+#define ILI9163C_SDDC 0xB7
+
+#define ILI9163C_PWCTR1 0xC0
+#define ILI9163C_PWCTR2 0xC1
+#define ILI9163C_PWCTR3 0xC2
+#define ILI9163C_PWCTR4 0xC3
+#define ILI9163C_PWCTR5 0xC4
+#define ILI9163C_VMCTR1 0xC5
+#define ILI9163C_VMCOFFS 0xC7
+
+#define ILI9163C_GAMCTL 0xF2
+
+#define ILI9163C_GMCTRP1 0xE0
+#define ILI9163C_GMCTRN1 0xE1
+
+#define ST77XX_MADCTL_MY 0x80
+#define ST77XX_MADCTL_MX 0x40
+#define ST77XX_MADCTL_MV 0x20 #define
+#define ST77XX_MADCTL_ML 0x10
+#define ST77XX_MADCTL_RGB 0x00
+#define ST77XX_MADCTL_BGR 0x08
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/*The LCD needs a bunch of command/argument values to be initialized. They are stored in this struct. */
+typedef struct
+{
+	uint8_t cmd;
+	uint8_t data[16];
+	uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds.
+} lcd_init_cmd_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static void ili9163c_set_orientation(uint8_t orientation);
+
+static void ili9163c_send_cmd(uint8_t cmd);
+static void ili9163c_send_data(void *data, uint16_t length);
+static void ili9163c_send_color(void *data, uint16_t length);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void ili9163c_init(void)
+{
+	ESP_LOGD(TAG, "Init");
+
+	lcd_init_cmd_t ili_init_cmds[] = {
+		{ILI9163C_SWRESET, {0}, 0x80},		 // Software reset, 0 args, w/delay 120ms
+		{ILI9163C_SLPOUT, {0}, 0x80},		 // Out of sleep mode, 0 args, w/delay 5ms
+		{ILI9163C_CMD_GAMST, {0x04}, 1},	 // Gamma Curve
+		{ILI9163C_FRMCTR1, {0x0C, 0x14}, 2}, // Frame rate ctrl - normal mode
+		{ILI9163C_INVCTR, {0x07}, 1},		 // Display inversion ctrl, 1 arg, no delay:No inversion
+		{ILI9163C_PWCTR1, {0x0C, 0x05}, 2},	 // Power control, 2 args, no delay
+		{ILI9163C_PWCTR2, {0x02}, 1},		 // Power control, 1 arg
+		{ILI9163C_PWCTR3, {0x02}, 1},		 // Power control, 1 arg
+		{ILI9163C_VMCTR1, {0x20, 0x55}, 2},	 // Power control, 1 arg, no delay:
+		{ILI9163C_VMCOFFS, {0x40}, 1},		 // VCOM Offset
+#if ILI9163C_INVERT_COLORS == 1
+		{ILI9163C_INVON, {0}, 0}, // set inverted mode
+#else
+		{ILI9163C_INVOFF, {0}, 0}, // set non-inverted mode
+#endif
+		{ILI9163C_COLMOD, {0x5}, 1}, // set color mode, 1 arg, no delay: 16-bit color
+		{ILI9163C_SDDC, {0}, 1},	  // set source driver direction control
+		{ILI9163C_GAMCTL, {0x01}, 1}, // set source driver direction control
+		{ILI9163C_GMCTRP1, {0x36, 0x29, 0x12, 0x22, 0x1C, 0x15, 0x42, 0xB7, 0x2F, 0x13, 0x12, 0x0A, 0x11, 0x0B, 0x06}, 16}, // 16 args, no delay:
+		{ILI9163C_GMCTRN1, {0x09, 0x16, 0x2D, 0x0D, 0x13, 0x15, 0x40, 0x48, 0x53, 0x0C, 0x1D, 0x25, 0x2E, 0x34, 0x39}, 16}, // 16 args, no delay:
+		{ILI9163C_NORON, {0}, 0x80},																						// Normal display on, no args, w/delay 10 ms delay
+		{ILI9163C_DISPON, {0}, 0x80},																						// Main screen turn on, no args w/delay 100 ms delay
+		{0, {0}, 0xff}
+	};
+
+	//Initialize non-SPI GPIOs
+	gpio_pad_select_gpio(ILI9163C_DC);
+	gpio_set_direction(ILI9163C_DC, GPIO_MODE_OUTPUT);
+	gpio_pad_select_gpio(ILI9163C_RST);
+	gpio_set_direction(ILI9163C_RST, GPIO_MODE_OUTPUT);
+
+#if ILI9163C_ENABLE_BACKLIGHT_CONTROL
+	gpio_pad_select_gpio(ILI9163C_BCKL);
+	gpio_set_direction(ILI9163C_BCKL, GPIO_MODE_OUTPUT);
+#endif
+	//Reset the display
+	gpio_set_level(ILI9163C_RST, 0);
+	vTaskDelay(100 / portTICK_RATE_MS);
+	gpio_set_level(ILI9163C_RST, 1);
+	vTaskDelay(150 / portTICK_RATE_MS);
+
+	//Send all the commands
+	uint16_t cmd = 0;
+	while (ili_init_cmds[cmd].databytes != 0xff)
+	{
+		ili9163c_send_cmd(ili_init_cmds[cmd].cmd);
+		ili9163c_send_data(ili_init_cmds[cmd].data, ili_init_cmds[cmd].databytes & 0x1F);
+		if (ili_init_cmds[cmd].databytes & 0x80)
+		{
+			vTaskDelay(150 / portTICK_RATE_MS);
+		}
+		cmd++;
+	}
+
+	ili9163c_enable_backlight(true);
+
+	ili9163c_set_orientation(CONFIG_LV_DISPLAY_ORIENTATION);
+}
+
+void ili9163c_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map)
+{
+	uint8_t data[4];
+
+	/*Column addresses*/
+	ili9163c_send_cmd(ILI9163C_CASET);
+	data[0] = (area->x1 >> 8) & 0xFF;
+	data[1] = area->x1 & 0xFF;
+	data[2] = (area->x2 >> 8) & 0xFF;
+	data[3] = area->x2 & 0xFF;
+	ili9163c_send_data(data, 4);
+
+	/*Page addresses*/
+	ili9163c_send_cmd(ILI9163C_RASET);
+	data[0] = (area->y1 >> 8) & 0xFF;
+	data[1] = area->y1 & 0xFF;
+	data[2] = (area->y2 >> 8) & 0xFF;
+	data[3] = area->y2 & 0xFF;
+	ili9163c_send_data(data, 4);
+
+	/*Memory write*/
+	ili9163c_send_cmd(ILI9163C_RAMWR);
+
+	uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
+
+	ili9163c_send_color((void *)color_map, size * 2);
+}
+
+void ili9163c_enable_backlight(bool backlight)
+{
+#if ILI9163C_ENABLE_BACKLIGHT_CONTROL
+	ESP_LOGD(TAG, "%s backlight.", backlight ? "Enabling" : "Disabling");
+	uint32_t tmp = 0;
+
+#if (ILI9163C_BCKL_ACTIVE_LVL == 1)
+	tmp = backlight ? 1 : 0;
+#else
+	tmp = backlight ? 0 : 1;
+#endif
+
+	gpio_set_level(ILI9163C_BCKL, tmp);
+#endif
+}
+
+void ili9163c_sleep_in()
+{
+	uint8_t data[] = {0x08};
+	ili9163c_send_cmd(ILI9163C_SLPIN);
+	ili9163c_send_data(&data, 1);
+}
+
+void ili9163c_sleep_out()
+{
+	uint8_t data[] = {0x08};
+	ili9163c_send_cmd(ILI9163C_SLPOUT);
+	ili9163c_send_data(&data, 1);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void ili9163c_send_cmd(uint8_t cmd)
+{
+	disp_wait_for_pending_transactions();
+	gpio_set_level(ILI9163C_DC, 0); /*Command mode*/
+	disp_spi_send_data(&cmd, 1);
+}
+
+static void ili9163c_send_data(void *data, uint16_t length)
+{
+	disp_wait_for_pending_transactions();
+	gpio_set_level(ILI9163C_DC, 1); /*Data mode*/
+	disp_spi_send_data(data, length);
+}
+
+static void ili9163c_send_color(void *data, uint16_t length)
+{
+	disp_wait_for_pending_transactions();
+	gpio_set_level(ILI9163C_DC, 1); /*Data mode*/
+	disp_spi_send_colors(data, length);
+}
+
+static void ili9163c_set_orientation(uint8_t orientation)
+{
+	assert(orientation < 4);
+
+	const char *orientation_str[] = {
+		"PORTRAIT", "PORTRAIT_INVERTED", "LANDSCAPE", "LANDSCAPE_INVERTED"};
+
+	ESP_LOGD(TAG, "Display orientation: %s", orientation_str[orientation]);
+
+	uint8_t data[] = {0x48, 0x88, 0xA8, 0x68};
+
+	ili9163c_send_cmd(ILI9163C_MADCTL);
+	ili9163c_send_data((void *)&data[orientation], 1);
+}

lvgl_tft/ili9163c.h

@@ -0,0 +1,65 @@
+/**
+ * @file lv_templ.h
+ *
+ */
+
+#ifndef ILI9163C_H
+#define ILI9163C_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include <stdbool.h>
+
+#ifdef LV_LVGL_H_INCLUDE_SIMPLE
+#include "lvgl.h"
+#else
+#include "lvgl/lvgl.h"
+#endif
+#include "../lvgl_helpers.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define ILI9163C_DC CONFIG_LV_DISP_PIN_DC
+#define ILI9163C_RST CONFIG_LV_DISP_PIN_RST
+#define ILI9163C_BCKL CONFIG_LV_DISP_PIN_BCKL
+
+#define ILI9163C_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
+
+#if CONFIG_LV_BACKLIGHT_ACTIVE_LVL
+#define ILI9163C_BCKL_ACTIVE_LVL 1
+#else
+#define ILI9163C_BCKL_ACTIVE_LVL 0
+#endif
+
+#define ILI9163C_INVERT_COLORS CONFIG_LV_INVERT_COLORS
+
+  /**********************
+ *      TYPEDEFS
+ **********************/
+
+  /**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+  void ili9163c_init(void);
+  void ili9163c_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map);
+  void ili9163c_enable_backlight(bool backlight);
+  void ili9163c_sleep_in(void);
+  void ili9163c_sleep_out(void);
+
+  /**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*ILI9163C_H*/

lvgl_tft/ili9341.c

@@ -93,18 +93,23 @@ void ili9341_init(void)
 	//Initialize non-SPI GPIOs
         gpio_pad_select_gpio(ILI9341_DC);
 	gpio_set_direction(ILI9341_DC, GPIO_MODE_OUTPUT);
+#if ILI9341_USE_RST
         gpio_pad_select_gpio(ILI9341_RST);
 	gpio_set_direction(ILI9341_RST, GPIO_MODE_OUTPUT);
+#endif
 
 #if ILI9341_ENABLE_BACKLIGHT_CONTROL
     gpio_pad_select_gpio(ILI9341_BCKL);
     gpio_set_direction(ILI9341_BCKL, GPIO_MODE_OUTPUT);
 #endif
+
+#if ILI9341_USE_RST
 	//Reset the display
 	gpio_set_level(ILI9341_RST, 0);
 	vTaskDelay(100 / portTICK_RATE_MS);
 	gpio_set_level(ILI9341_RST, 1);
 	vTaskDelay(100 / portTICK_RATE_MS);
+#endif
 
 	ESP_LOGI(TAG, "Initialization.");
 
@@ -228,6 +233,8 @@ static void ili9341_set_orientation(uint8_t orientation)
 
 #if defined CONFIG_LV_PREDEFINED_DISPLAY_M5STACK
     uint8_t data[] = {0x68, 0x68, 0x08, 0x08};
+#elif defined (CONFIG_LV_PREDEFINED_DISPLAY_M5CORE2)
+	uint8_t data[] = {0x08, 0x88, 0x28, 0xE8};
 #elif defined (CONFIG_LV_PREDEFINED_DISPLAY_WROVER4)
     uint8_t data[] = {0x6C, 0xEC, 0xCC, 0x4C};
 #elif defined (CONFIG_LV_PREDEFINED_DISPLAY_NONE)

lvgl_tft/ili9341.h

@@ -25,9 +25,10 @@ extern "C" {
 /*********************
  *      DEFINES
  *********************/
-#define ILI9341_DC   CONFIG_LV_DISP_PIN_DC
+#define ILI9341_DC        CONFIG_LV_DISP_PIN_DC
-#define ILI9341_RST  CONFIG_LV_DISP_PIN_RST
+#define ILI9341_USE_RST   CONFIG_LV_DISP_USE_RST
-#define ILI9341_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define ILI9341_RST       CONFIG_LV_DISP_PIN_RST
+#define ILI9341_BCKL      CONFIG_LV_DISP_PIN_BCKL
 
 #define ILI9341_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
 

lvgl_tft/ili9481.c

@@ -76,19 +76,24 @@ void ili9481_init(void)
     //Initialize non-SPI GPIOs
     gpio_pad_select_gpio(ILI9481_DC);
     gpio_set_direction(ILI9481_DC, GPIO_MODE_OUTPUT);
+
+#if ILI9481_USE_RST
     gpio_pad_select_gpio(ILI9481_RST);
     gpio_set_direction(ILI9481_RST, GPIO_MODE_OUTPUT);
+#endif
 
 #if ILI9481_ENABLE_BACKLIGHT_CONTROL
     gpio_pad_select_gpio(ILI9481_BCKL);
     gpio_set_direction(ILI9481_BCKL, GPIO_MODE_OUTPUT);
 #endif
 
+#if ILI9481_USE_RST
     //Reset the display
     gpio_set_level(ILI9481_RST, 0);
     vTaskDelay(100 / portTICK_RATE_MS);
     gpio_set_level(ILI9481_RST, 1);
     vTaskDelay(100 / portTICK_RATE_MS);
+#endif
 
     ESP_LOGI(TAG, "ILI9481 initialization.");
 

lvgl_tft/ili9481.h

@@ -25,9 +25,10 @@ extern "C" {
 /*********************
  *      DEFINES
  *********************/
-#define ILI9481_DC   CONFIG_LV_DISP_PIN_DC
+#define ILI9481_DC        CONFIG_LV_DISP_PIN_DC
-#define ILI9481_RST  CONFIG_LV_DISP_PIN_RST
+#define ILI9481_RST       CONFIG_LV_DISP_PIN_RST
-#define ILI9481_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define ILI9481_USE_RST   CONFIG_LV_DISP_USE_RST
+#define ILI9481_BCKL      CONFIG_LV_DISP_PIN_BCKL
 
 #define ILI9481_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
 #define ILI9481_INVERT_COLORS CONFIG_LV_INVERT_COLORS

lvgl_tft/ili9486.c

@@ -78,19 +78,24 @@ void ili9486_init(void)
 	//Initialize non-SPI GPIOs
         gpio_pad_select_gpio(ILI9486_DC);
 	gpio_set_direction(ILI9486_DC, GPIO_MODE_OUTPUT);
+
+#if ILI9486_USE_RST
         gpio_pad_select_gpio(ILI9486_RST);
 	gpio_set_direction(ILI9486_RST, GPIO_MODE_OUTPUT);
+#endif
 
 #if ILI9486_ENABLE_BACKLIGHT_CONTROL
     gpio_pad_select_gpio(ILI9486_BCKL);
     gpio_set_direction(ILI9486_BCKL, GPIO_MODE_OUTPUT);
 #endif
 
+#if ILI9486_USE_RST
 	//Reset the display
 	gpio_set_level(ILI9486_RST, 0);
 	vTaskDelay(100 / portTICK_RATE_MS);
 	gpio_set_level(ILI9486_RST, 1);
 	vTaskDelay(100 / portTICK_RATE_MS);
+#endif
 
 	ESP_LOGI(TAG, "ILI9486 Initialization.");
 

lvgl_tft/ili9486.h

@@ -25,9 +25,10 @@ extern "C" {
 /*********************
  *      DEFINES
  *********************/
-#define ILI9486_DC   CONFIG_LV_DISP_PIN_DC
+#define ILI9486_DC      CONFIG_LV_DISP_PIN_DC
-#define ILI9486_RST  CONFIG_LV_DISP_PIN_RST
+#define ILI9486_RST     CONFIG_LV_DISP_PIN_RST
-#define ILI9486_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define ILI9486_USE_RST CONFIG_LV_DISP_USE_RST
+#define ILI9486_BCKL    CONFIG_LV_DISP_PIN_BCKL
 
 #define ILI9486_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
 

lvgl_tft/ili9488.c

@@ -78,19 +78,24 @@ void ili9488_init(void)
 	//Initialize non-SPI GPIOs
         gpio_pad_select_gpio(ILI9488_DC);
 	gpio_set_direction(ILI9488_DC, GPIO_MODE_OUTPUT);
+
+#if ILI9488_USE_RST
         gpio_pad_select_gpio(ILI9488_RST);
 	gpio_set_direction(ILI9488_RST, GPIO_MODE_OUTPUT);
+#endif
 
 #if ILI9488_ENABLE_BACKLIGHT_CONTROL
         gpio_pad_select_gpio(ILI9488_BCKL);
 	gpio_set_direction(ILI9488_BCKL, GPIO_MODE_OUTPUT);
 #endif
 
+#if ILI9488_USE_RST
 	//Reset the display
 	gpio_set_level(ILI9488_RST, 0);
 	vTaskDelay(100 / portTICK_RATE_MS);
 	gpio_set_level(ILI9488_RST, 1);
 	vTaskDelay(100 / portTICK_RATE_MS);
+#endif
 
 	ESP_LOGI(TAG, "ILI9488 initialization.");
 

lvgl_tft/ili9488.h

@@ -25,9 +25,10 @@ extern "C" {
 /*********************
  *      DEFINES
  *********************/
-#define ILI9488_DC   CONFIG_LV_DISP_PIN_DC
+#define ILI9488_DC      CONFIG_LV_DISP_PIN_DC
-#define ILI9488_RST  CONFIG_LV_DISP_PIN_RST
+#define ILI9488_RST     CONFIG_LV_DISP_PIN_RST
-#define ILI9488_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define ILI9488_USE_RST CONFIG_LV_DISP_USE_RST
+#define ILI9488_BCKL    CONFIG_LV_DISP_PIN_BCKL
 
 #define ILI9488_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
 

lvgl_tft/ra8875.c

@@ -159,18 +159,24 @@ void ra8875_init(void)
 #endif
 
     // Initialize non-SPI GPIOs
+
+#if RA8875_USE_RST
     gpio_pad_select_gpio(RA8875_RST);
     gpio_set_direction(RA8875_RST, GPIO_MODE_OUTPUT);
+#endif
+
 #ifdef CONFIG_LV_DISP_PIN_BCKL
     gpio_pad_select_gpio(CONFIG_LV_DISP_PIN_BCKL);
     gpio_set_direction(CONFIG_LV_DISP_PIN_BCKL, GPIO_MODE_OUTPUT);
 #endif
 
+#if RA8875_USE_RST
     // Reset the RA8875
     gpio_set_level(RA8875_RST, 0);
     vTaskDelay(DIV_ROUND_UP(100, portTICK_RATE_MS));
     gpio_set_level(RA8875_RST, 1);
     vTaskDelay(DIV_ROUND_UP(100, portTICK_RATE_MS));
+#endif
 
     // Initalize RA8875 clocks (SPI must be decelerated before initializing clocks)
     disp_spi_change_device_speed(SPI_CLOCK_SPEED_SLOW_HZ);

lvgl_tft/ra8875.h

@@ -24,7 +24,8 @@ extern "C" {
 /*********************
  *      DEFINES
  *********************/
-#define RA8875_RST  CONFIG_LV_DISP_PIN_RST
+#define RA8875_RST      CONFIG_LV_DISP_PIN_RST
+#define RA8875_USE_RST  CONFIG_LV_DISP_USE_RST
 
 // System & Configuration Registers
 #define RA8875_REG_PWRR   (0x01)     // Power and Display Control Register (PWRR)

lvgl_tft/sh1107.c

@@ -94,6 +94,8 @@ void sh1107_init(void)
 	//Initialize non-SPI GPIOs
         gpio_pad_select_gpio(SH1107_DC);
 	gpio_set_direction(SH1107_DC, GPIO_MODE_OUTPUT);
+
+#if SH1107_USE_RST
         gpio_pad_select_gpio(SH1107_RST);
 	gpio_set_direction(SH1107_RST, GPIO_MODE_OUTPUT);
 
@@ -102,6 +104,7 @@ void sh1107_init(void)
 	vTaskDelay(100 / portTICK_RATE_MS);
 	gpio_set_level(SH1107_RST, 1);
 	vTaskDelay(100 / portTICK_RATE_MS);
+#endif
 
 	//Send all the commands
 	uint16_t cmd = 0;

lvgl_tft/sh1107.h

@@ -25,8 +25,9 @@ extern "C" {
 /*********************
  *      DEFINES
  *********************/
-#define SH1107_DC   CONFIG_LV_DISP_PIN_DC
+#define SH1107_DC       CONFIG_LV_DISP_PIN_DC
-#define SH1107_RST  CONFIG_LV_DISP_PIN_RST
+#define SH1107_RST      CONFIG_LV_DISP_PIN_RST
+#define SH1107_USE_RST  CONFIG_LV_DISP_USE_RST
 
 /**********************
  *      TYPEDEFS

lvgl_tft/st7735s.c

@@ -99,6 +99,8 @@ void st7735s_init(void)
 	//Initialize non-SPI GPIOs
         gpio_pad_select_gpio(ST7735S_DC);
 	gpio_set_direction(ST7735S_DC, GPIO_MODE_OUTPUT);
+
+#if ST7735S_USE_RST
         gpio_pad_select_gpio(ST7735S_RST);
 	gpio_set_direction(ST7735S_RST, GPIO_MODE_OUTPUT);
 
@@ -107,6 +109,7 @@ void st7735s_init(void)
 	vTaskDelay(100 / portTICK_RATE_MS);
 	gpio_set_level(ST7735S_RST, 1);
 	vTaskDelay(100 / portTICK_RATE_MS);
+#endif
 
 	ESP_LOGI(TAG, "ST7735S initialization.");
 

lvgl_tft/st7735s.h

@@ -25,8 +25,9 @@ extern "C" {
  *********************/
 #define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
 
-#define ST7735S_DC   CONFIG_LV_DISP_PIN_DC
+#define ST7735S_DC       CONFIG_LV_DISP_PIN_DC
-#define ST7735S_RST  CONFIG_LV_DISP_PIN_RST
+#define ST7735S_RST      CONFIG_LV_DISP_PIN_RST
+#define ST7735S_USE_RST  CONFIG_LV_DISP_USE_RST
 
 #define AXP192_SDA   CONFIG_LV_AXP192_PIN_SDA
 #define AXP192_SCL   CONFIG_LV_AXP192_PIN_SCL

lvgl_tft/st7789.c

@@ -35,8 +35,6 @@ typedef struct {
  **********************/
 static void st7789_set_orientation(uint8_t orientation);
 
-static void st7789_send_cmd(uint8_t cmd);
-static void st7789_send_data(void *data, uint16_t length);
 static void st7789_send_color(void *data, uint16_t length);
 
 /**********************
@@ -91,7 +89,7 @@ void st7789_init(void)
     gpio_pad_select_gpio(ST7789_DC);
     gpio_set_direction(ST7789_DC, GPIO_MODE_OUTPUT);
 
-#if !defined(CONFIG_LV_DISP_ST7789_SOFT_RESET)
+#if !defined(ST7789_SOFT_RST)
     gpio_pad_select_gpio(ST7789_RST);
     gpio_set_direction(ST7789_RST, GPIO_MODE_OUTPUT);
 #endif
@@ -102,7 +100,7 @@ void st7789_init(void)
 #endif
 
     //Reset the display
-#if !defined(CONFIG_LV_DISP_ST7789_SOFT_RESET)
+#if !defined(ST7789_SOFT_RST)
     gpio_set_level(ST7789_RST, 0);
     vTaskDelay(100 / portTICK_RATE_MS);
     gpio_set_level(ST7789_RST, 1);
@@ -201,14 +199,14 @@ void st7789_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * colo
 /**********************
  *   STATIC FUNCTIONS
  **********************/
-static void st7789_send_cmd(uint8_t cmd)
+void st7789_send_cmd(uint8_t cmd)
 {
     disp_wait_for_pending_transactions();
     gpio_set_level(ST7789_DC, 0);
     disp_spi_send_data(&cmd, 1);
 }
 
-static void st7789_send_data(void * data, uint16_t length)
+void st7789_send_data(void * data, uint16_t length)
 {
     disp_wait_for_pending_transactions();
     gpio_set_level(ST7789_DC, 1);

lvgl_tft/st7789.h

@@ -25,6 +25,15 @@ extern "C"
 #define ST7789_RST      CONFIG_LV_DISP_PIN_RST
 #define ST7789_BCKL     CONFIG_LV_DISP_PIN_BCKL
 
+#if CONFIG_LV_DISP_USE_RST
+  #if CONFIG_LV_DISP_ST7789_SOFT_RESET
+    #define ST7789_SOFT_RST
+  #endif
+#else
+  #define ST7789_SOFT_RST
+#endif
+
+
 #define ST7789_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
 #define ST7789_INVERT_COLORS            CONFIG_LV_INVERT_COLORS
 
@@ -114,6 +123,9 @@ void st7789_init(void);
 void st7789_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map);
 void st7789_enable_backlight(bool backlight);
 
+void st7789_send_cmd(uint8_t cmd);
+void st7789_send_data(void *data, uint16_t length);
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif

lvgl_tft/st7796s.c

@@ -94,18 +94,24 @@ void st7796s_init(void)
 	//Initialize non-SPI GPIOs
 	gpio_pad_select_gpio(ST7796S_DC);
 	gpio_set_direction(ST7796S_DC, GPIO_MODE_OUTPUT);
+
+#if ST7796S_USE_RST
 	gpio_pad_select_gpio(ST7796S_RST);
 	gpio_set_direction(ST7796S_RST, GPIO_MODE_OUTPUT);
+#endif
 
 #if ST7796S_ENABLE_BACKLIGHT_CONTROL
 	gpio_pad_select_gpio(ST7796S_BCKL);
 	gpio_set_direction(ST7796S_BCKL, GPIO_MODE_OUTPUT);
 #endif
+
+#if ST7796S_USE_RST
 	//Reset the display
 	gpio_set_level(ST7796S_RST, 0);
 	vTaskDelay(100 / portTICK_RATE_MS);
 	gpio_set_level(ST7796S_RST, 1);
 	vTaskDelay(100 / portTICK_RATE_MS);
+#endif
 
 	ESP_LOGI(TAG, "Initialization.");
 

lvgl_tft/st7796s.h

@@ -26,9 +26,10 @@ extern "C"
 /*********************
  *      DEFINES
  *********************/
-#define ST7796S_DC CONFIG_LV_DISP_PIN_DC
+#define ST7796S_DC      CONFIG_LV_DISP_PIN_DC
-#define ST7796S_RST CONFIG_LV_DISP_PIN_RST
+#define ST7796S_RST     CONFIG_LV_DISP_PIN_RST
-#define ST7796S_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define ST7796S_USE_RST CONFIG_LV_DISP_USE_RST
+#define ST7796S_BCKL    CONFIG_LV_DISP_PIN_BCKL
 
 #define ST7796S_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
 #define ST7796S_INVERT_COLORS CONFIG_LV_INVERT_COLORS