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_MISO	DISP_SPI_MISO				// yellow
-#define EVE_MOSI	DISP_SPI_MOSI				// green
-#define EVE_CS 		DISP_SPI_CS					// blue
-#define EVE_PDN		CONFIG_LV_DISP_PIN_RST		// grey
+#define EVE_CLK		    DISP_SPI_CLK				    // orange
+#define EVE_MISO	    DISP_SPI_MISO				    // yellow
+#define EVE_MOSI	    DISP_SPI_MOSI				    // green
+#define EVE_CS 		    DISP_SPI_CS					    // blue
+#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.");
 
@@ -167,23 +173,23 @@ 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;
 	data[3] = area->x2 & 0xFF;
 	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;
 	data[3] = area->y2 & 0xFF;
 	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_RST  CONFIG_LV_DISP_PIN_RST
-#define GC9A01_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define GC9A01_DC       CONFIG_LV_DISP_PIN_DC
+#define GC9A01_RST      CONFIG_LV_DISP_PIN_RST
+#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_RST  CONFIG_LV_DISP_PIN_RST
-#define HX8357_BCKL CONFIG_LV_DISP_PIN_BCKL
+#define HX8357_DC       CONFIG_LV_DISP_PIN_DC
+#define HX8357_RST      CONFIG_LV_DISP_PIN_RST
+#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