Merge pull request #58 from ropg/master

GPIO display reset optional / Added M5Core2 / White space fixes

.gitignore

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

README.md

@@ -51,6 +51,7 @@ 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_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();
 
@@ -64,7 +68,7 @@ void EVE_get_cmdoffset(void);
 /* commands to operate on memory: */
 void EVE_cmd_memzero(uint32_t ptr, uint32_t num);
 void EVE_cmd_memset(uint32_t ptr, uint8_t value, uint32_t num);
-void EVE_cmd_memwrite(uint32_t dest, uint32_t num, const uint8_t *data); 
+void EVE_cmd_memwrite(uint32_t dest, uint32_t num, const uint8_t *data);
 void EVE_cmd_memcpy(uint32_t dest, uint32_t src, uint32_t num);
 
 #if FT81X_FULL

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

@@ -250,7 +250,7 @@ void TFT_bitmap_display(void)
 		EVE_cmd_dl(TAG(0));
 
 		EVE_cmd_dl(DL_DISPLAY);	/* instruct the graphics processor to show the list */
-		
+
 		EVE_cmd_dl(CMD_SWAP); /* make this list active */
 
 		EVE_end_cmd_burst(); /* stop writing to the cmd-fifo */
@@ -262,12 +262,18 @@ 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();
-	
+
 	if(EVE_init())
 	{
 		tft_active = 1;
@@ -278,7 +284,7 @@ void FT81x_init(void)
 
 		EVE_cmd_memset(SCREEN_BITMAP_ADDR, BLACK, SCREEN_BUFFER_SIZE);		// clear screen buffer
 		EVE_cmd_execute();
-		
+
 		TFT_bitmap_display();	// set DL for fullscreen bitmap display
 	}
 
@@ -320,4 +326,4 @@ void TFT_WriteBitmap(uint8_t* Bitmap, uint16_t X, uint16_t Y, uint16_t Width, ui
 void FT81x_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map)
 {
 	TFT_WriteBitmap((uint8_t*)color_map, area->x1, area->y1, lv_area_get_width(area), lv_area_get_height(area));
-}
+}

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.");
 
@@ -167,7 +173,7 @@ void GC9A01_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * colo
 	uint8_t data[4];
 
 	/*Column addresses*/
-	GC9A01_send_cmd(0x2A);				//0x2A 
+	GC9A01_send_cmd(0x2A);				//0x2A
 	data[0] = (area->x1 >> 8) & 0xFF;
 	data[1] = area->x1 & 0xFF;
 	data[2] = (area->x2 >> 8) & 0xFF;
@@ -175,7 +181,7 @@ void GC9A01_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * colo
 	GC9A01_send_data(data, 4);
 
 	/*Page addresses*/
-	GC9A01_send_cmd(0x2B);				//0x2B 
+	GC9A01_send_cmd(0x2B);				//0x2B
 	data[0] = (area->y1 >> 8) & 0xFF;
 	data[1] = area->y1 & 0xFF;
 	data[2] = (area->y2 >> 8) & 0xFF;
@@ -183,7 +189,7 @@ void GC9A01_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * colo
 	GC9A01_send_data(data, 4);
 
 	/*Memory write*/
-	GC9A01_send_cmd(0x2C);				//0x2C 
+	GC9A01_send_cmd(0x2C);				//0x2C
 
 
 	uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
@@ -211,7 +217,7 @@ void GC9A01_sleep_in()
 {
 	uint8_t data[] = {0x08};
 	GC9A01_send_cmd(0x10);			//0x10 Enter Sleep Mode
-	GC9A01_send_data(&data, 1);		
+	GC9A01_send_data(&data, 1);
 }
 
 void GC9A01_sleep_out()

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 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
@@ -744,11 +748,11 @@ menu "LVGL TFT Display controller"
 
         config LV_DISP_ST7789_SOFT_RESET
             bool "Soft reset - use software reset instead of reset pin"
-            depends on LV_TFT_DISPLAY_CONTROLLER_ST7789            
+            depends on LV_TFT_DISPLAY_CONTROLLER_ST7789
             default n
             help
                 Use software reset and ignores configured reset pin (some hardware does not use a reset pin).
-    
+
     endmenu
 
     # menu will be visible only when LV_PREDEFINED_DISPLAY_NONE is y
@@ -763,6 +767,7 @@ menu "LVGL TFT 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
@@ -777,6 +782,7 @@ menu "LVGL TFT 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.
@@ -788,6 +794,7 @@ menu "LVGL TFT 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
@@ -830,6 +837,7 @@ menu "LVGL TFT 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
@@ -858,6 +866,7 @@ menu "LVGL TFT 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
@@ -887,6 +896,7 @@ menu "LVGL TFT 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
@@ -900,8 +910,22 @@ menu "LVGL TFT 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
 
@@ -937,6 +961,7 @@ menu "LVGL TFT 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/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

@@ -73,9 +73,9 @@ static uint8_t il3820_lut_initial[] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 };
 static uint8_t il3820_lut_default[] = {
-    0x10, 0x18, 0x18, 0x08, 0x18, 0x18, 
+    0x10, 0x18, 0x18, 0x08, 0x18, 0x18,
-    0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 
+    0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x13, 0x14, 0x44, 0x12,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 };
@@ -113,7 +113,7 @@ void il3820_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_m
     uint8_t *buffer = (uint8_t*) color_map;
     uint16_t x_addr_counter = 0;
     uint16_t y_addr_counter = 0;
-    
+
     /* Configure entry mode  */
     il3820_write_cmd(IL3820_CMD_ENTRY_MODE, &il3820_scan_mode, 1);
 
@@ -131,7 +131,7 @@ void il3820_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_m
     il3820_set_cursor(x_addr_counter, y_addr_counter);
 
     il3820_send_cmd(IL3820_CMD_WRITE_RAM);
-    
+
     /* Write the pixel data to graphic RAM, linelen bytes at the time. */
     for(size_t row = 0; row <= (EPD_PANEL_HEIGHT - 1); row++){
 	il3820_send_data(buffer, linelen);
@@ -139,7 +139,7 @@ void il3820_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_m
     }
 
     il3820_set_window(0, EPD_PANEL_WIDTH - 1, 0, EPD_PANEL_HEIGHT - 1);
-    
+
     il3820_update_display();
 
     /* IMPORTANT!!!
@@ -152,7 +152,7 @@ void il3820_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_m
  * BIT_SET(byte_index, bit_index) clears the bit_index pixel at byte_index of
  * the display buffer.
  * BIT_CLEAR(byte_index, bit_index) sets the bit_index pixel at the byte_index
- * of the display buffer. */ 		
+ * of the display buffer. */
 void il3820_set_px_cb(lv_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)
@@ -198,20 +198,26 @@ 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);
-    
+
     /* Busy wait for the BUSY signal to go low */
     il3820_waitbusy(IL3820_WAIT);
 
@@ -239,10 +245,10 @@ void il3820_init(void)
 
     // allow partial updates now
     il3820_partial = true;
-    
+
     /* Update LUT */
     il3820_write_cmd(IL3820_CMD_UPDATE_LUT, il3820_lut_default, sizeof(il3820_lut_default));
-    
+
     /* Clear control memory and update */
     il3820_clear_cntlr_mem(IL3820_CMD_WRITE_RAM, true);
 }
@@ -251,10 +257,10 @@ void il3820_init(void)
 void il3820_sleep_in(void)
 {
     uint8_t data[] = {0x01};
-    
+
     /* Wait for the BUSY signal to go low */
     il3820_waitbusy(IL3820_WAIT);
-    
+
     il3820_write_cmd(IL3820_CMD_SLEEP_MODE, data, 1);
 }
 
@@ -264,15 +270,15 @@ static void il3820_waitbusy(int wait_ms)
     int i = 0;
 
     vTaskDelay(10 / portTICK_RATE_MS); // 10ms delay
-    
+
     for(i = 0; i < (wait_ms * 10); i++) {
 	if(gpio_get_level(IL3820_BUSY_PIN) != IL3820_BUSY_LEVEL) {
             return;
         }
-	
+
         vTaskDelay(10 / portTICK_RATE_MS);
     }
-    
+
     ESP_LOGE( TAG, "busy exceeded %dms", i*10 );
 }
 
@@ -288,10 +294,10 @@ static inline void il3820_data_mode(void)
     gpio_set_level(IL3820_DC_PIN, 1);
 }
 
-static inline void il3820_write_cmd(uint8_t cmd, uint8_t *data, size_t len) 
+static inline void il3820_write_cmd(uint8_t cmd, uint8_t *data, size_t len)
 {
     disp_wait_for_pending_transactions();
-    
+
     il3820_command_mode();
     disp_spi_send_data(&cmd, 1);
 
@@ -302,10 +308,10 @@ static inline void il3820_write_cmd(uint8_t cmd, uint8_t *data, size_t len)
 }
 
 /* Send cmd to the display */
-static inline void il3820_send_cmd(uint8_t cmd) 
+static inline void il3820_send_cmd(uint8_t cmd)
 {
     disp_wait_for_pending_transactions();
-    
+
     il3820_command_mode();
     disp_spi_send_data(&cmd, 1);
 }
@@ -314,14 +320,14 @@ static inline void il3820_send_cmd(uint8_t cmd)
 static void il3820_send_data(uint8_t *data, uint16_t length)
 {
     disp_wait_for_pending_transactions();
-    
+
     il3820_data_mode();
     disp_spi_send_colors(data, length);
 }
 
 /* Specify the start/end positions of the window address in the X and Y
  * directions by an address unit.
- * 
+ *
  * @param sx: X Start position.
  * @param ex: X End position.
  * @param ys: Y Start position.
@@ -330,7 +336,7 @@ static void il3820_send_data(uint8_t *data, uint16_t length)
 static inline void il3820_set_window( uint16_t sx, uint16_t ex, uint16_t ys, uint16_t ye)
 {
     uint8_t tmp[4] = {0};
-	
+
     tmp[0] = sx / 8;
     tmp[1] = ex / 8;
 
@@ -378,7 +384,7 @@ static void il3820_update_display(void)
     } else {
 	tmp =  (IL3820_CTRL2_ENABLE_CLK | IL3820_CTRL2_ENABLE_ANALOG | IL3820_CTRL2_TO_PATTERN);
     }
-    
+
     il3820_write_cmd(IL3820_CMD_UPDATE_CTRL2, &tmp, 1);
 
     il3820_write_cmd(IL3820_CMD_MASTER_ACTIVATION, NULL, 0);
@@ -394,10 +400,10 @@ static void il3820_clear_cntlr_mem(uint8_t ram_cmd, bool update)
     /* Arrays used by SPI must be word alligned */
     WORD_ALIGNED_ATTR uint8_t clear_page[IL3820_COLUMNS];
     memset(clear_page, 0xff, sizeof clear_page);
-    
+
     /* Configure entry mode */
     il3820_write_cmd(IL3820_CMD_ENTRY_MODE, &il3820_scan_mode, 1);
-    
+
     /* Configure the window */
     il3820_set_window(0, EPD_PANEL_WIDTH - 1, 0, EPD_PANEL_HEIGHT - 1);
 

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/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

@@ -60,8 +60,8 @@ void ili9486_init(void)
 		{0xE0, {0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98, 0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00}, 15},
 		{0XE1, {0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75, 0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00}, 15},
 		{0x20, {0}, 0},				/* display inversion OFF */
-		{0x36, {0x48}, 1},	
+		{0x36, {0x48}, 1},
-		{0x29, {0}, 0x80},			/* display on */	
+		{0x29, {0}, 0x80},			/* display on */
 		{0x00, {0}, 0xff},
 	};
 
@@ -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.");
 
@@ -135,7 +140,7 @@ void ili9486_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * col
 	ili9486_send_cmd(0x2C);
 
 	size = lv_area_get_width(area) * lv_area_get_height(area);
-	
+
     ili9486_send_color((void*) color_map, size * 2);
 }
 

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

@@ -50,7 +50,7 @@ static void ili9488_send_color(void * data, uint16_t length);
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
-// From github.com/jeremyjh/ESP32_TFT_library 
+// From github.com/jeremyjh/ESP32_TFT_library
 // From github.com/mvturnho/ILI9488-lvgl-ESP32-WROVER-B
 void ili9488_init(void)
 {
@@ -78,26 +78,31 @@ 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.");
 
 	// Exit sleep
 	ili9488_send_cmd(0x01);	/* Software reset */
 	vTaskDelay(100 / portTICK_RATE_MS);
-	
+
 	//Send all the commands
 	uint16_t cmd = 0;
 	while (ili_init_cmds[cmd].databytes!=0xff) {
@@ -146,7 +151,7 @@ void ili9488_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * col
 	    (uint8_t) (area->x2 >> 8) & 0xFF,
 	    (uint8_t) (area->x2) & 0xFF,
 	};
-	
+
 	/* Page addresses  */
 	uint8_t yb[] = {
 	    (uint8_t) (area->y1 >> 8) & 0xFF,

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

@@ -91,7 +91,7 @@ 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 +102,7 @@ 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);

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
 

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