lcd: support model NT35510 in example

examples/peripherals/lcd/i80_controller/README.md

@@ -19,7 +19,7 @@ This example uses the [esp_timer](https://docs.espressif.com/projects/esp-idf/en
 ### Hardware Required
 
 * An ESP development board
-* An Intel 8080 interfaced (so called MCU interface or parallel interface) LCD
+* An Intel 8080 interfaced (so called MCU interface or parallel interface) LCD (this example can use ST7789 or NT35510)
 * An USB cable for power supply and programming
 
 ### Hardware Connection
@@ -58,6 +58,8 @@ Run `idf.py set-target <target-name>` to select one supported target that can ru
 
 Run `idf.py menuconfig` to open a terminal UI where you can tune specific configuration for this example in the `Example Configuration` menu.
 
+* `i80 LCD controller model`: Choose the LCD model to use by the example. If you choose `NT35510`, there will be another relevant configuration `NT35510 Data Width`, to choose the data line width for your NT35510 LCD module.
+
 * `Allocate color data from PSRAM`: Select this option if you want to allocate the LVGL draw buffers from PSRAM.
 
 Run `idf.py -p PORT build flash monitor` to build, flash and monitor the project. A fancy animation will show up on the LCD as expected.

examples/peripherals/lcd/i80_controller/main/Kconfig.projbuild

@@ -8,4 +8,38 @@ menu "Example Configuration"
             Enable this option if you wish to allocate the color buffer used by LVGL from PSRAM.
             Unmatched PSRAM band width with LCD requirement can lead to blurred image display.
 
+    choice EXAMPLE_LCD_I80_CONTROLLER_MODEL
+        prompt "i80 LCD controller model"
+        default EXAMPLE_LCD_I80_CONTROLLER_ST7789
+        help
+            Select LCD controller model
+
+        config EXAMPLE_LCD_I80_CONTROLLER_ST7789
+            bool "ST7789"
+
+        config EXAMPLE_LCD_I80_CONTROLLER_NT35510
+            bool "NT35510"
+    endchoice
+
+    if EXAMPLE_LCD_I80_CONTROLLER_NT35510
+        choice EXAMPLE_LCD_NT35510_DATA_WIDTH
+            prompt "NT35510 Data Width"
+            default EXAMPLE_LCD_NT35510_DATA_WIDTH_8
+            help
+                Select NT35510 Data Width (8 or 16), a.k.a, the number of data lines.
+
+            config EXAMPLE_LCD_NT35510_DATA_WIDTH_8
+                bool "8"
+
+            config EXAMPLE_LCD_NT35510_DATA_WIDTH_16
+                bool "16"
+        endchoice
+
+    endif
+
+    config EXAMPLE_LCD_I80_BUS_WIDTH
+        int
+        default 16 if EXAMPLE_LCD_NT35510_DATA_WIDTH_16
+        default 8
+
 endmenu

examples/peripherals/lcd/i80_controller/main/i80_controller_example_main.c

@@ -38,6 +38,16 @@ static const char *TAG = "example";
 #define EXAMPLE_PIN_NUM_DATA5          11
 #define EXAMPLE_PIN_NUM_DATA6          12
 #define EXAMPLE_PIN_NUM_DATA7          13
+#if CONFIG_EXAMPLE_LCD_I80_BUS_WIDTH > 8
+#define EXAMPLE_PIN_NUM_DATA8          14
+#define EXAMPLE_PIN_NUM_DATA9          15
+#define EXAMPLE_PIN_NUM_DATA10         16
+#define EXAMPLE_PIN_NUM_DATA11         17
+#define EXAMPLE_PIN_NUM_DATA12         18
+#define EXAMPLE_PIN_NUM_DATA13         19
+#define EXAMPLE_PIN_NUM_DATA14         20
+#define EXAMPLE_PIN_NUM_DATA15         21
+#endif
 #define EXAMPLE_PIN_NUM_PCLK           5
 #define EXAMPLE_PIN_NUM_CS             3
 #define EXAMPLE_PIN_NUM_DC             4
@@ -48,8 +58,13 @@ static const char *TAG = "example";
 #define EXAMPLE_LCD_H_RES              240
 #define EXAMPLE_LCD_V_RES              280
 // Bit number used to represent command and parameter
+#if CONFIG_EXAMPLE_LCD_I80_CONTROLLER_ST7789
 #define EXAMPLE_LCD_CMD_BITS           8
 #define EXAMPLE_LCD_PARAM_BITS         8
+#elif CONFIG_EXAMPLE_LCD_I80_CONTROLLER_NT35510
+#define EXAMPLE_LCD_CMD_BITS           16
+#define EXAMPLE_LCD_PARAM_BITS         16
+#endif
 
 #define EXAMPLE_LVGL_TICK_PERIOD_MS    2
 
@@ -110,8 +125,18 @@ void app_main(void)
             EXAMPLE_PIN_NUM_DATA5,
             EXAMPLE_PIN_NUM_DATA6,
             EXAMPLE_PIN_NUM_DATA7,
+#if CONFIG_EXAMPLE_LCD_I80_BUS_WIDTH > 8
+            EXAMPLE_PIN_NUM_DATA8,
+            EXAMPLE_PIN_NUM_DATA9,
+            EXAMPLE_PIN_NUM_DATA10,
+            EXAMPLE_PIN_NUM_DATA11,
+            EXAMPLE_PIN_NUM_DATA12,
+            EXAMPLE_PIN_NUM_DATA13,
+            EXAMPLE_PIN_NUM_DATA14,
+            EXAMPLE_PIN_NUM_DATA15,
+#endif
         },
-        .bus_width = 8,
+        .bus_width = CONFIG_EXAMPLE_LCD_I80_BUS_WIDTH,
         .max_transfer_bytes = EXAMPLE_LCD_H_RES * 100 * sizeof(uint16_t),
         .psram_trans_align = EXAMPLE_PSRAM_DATA_ALIGNMENT,
         .sram_trans_align = 4,
@@ -135,18 +160,34 @@ void app_main(void)
     };
     ESP_ERROR_CHECK(esp_lcd_new_panel_io_i80(i80_bus, &io_config, &io_handle));
 
-    ESP_LOGI(TAG, "Install LCD driver of st7789");
     esp_lcd_panel_handle_t panel_handle = NULL;
+#if CONFIG_EXAMPLE_LCD_I80_CONTROLLER_ST7789
+    ESP_LOGI(TAG, "Install LCD driver of st7789");
     esp_lcd_panel_dev_config_t panel_config = {
         .reset_gpio_num = EXAMPLE_PIN_NUM_RST,
         .color_space = ESP_LCD_COLOR_SPACE_RGB,
         .bits_per_pixel = 16,
     };
     ESP_ERROR_CHECK(esp_lcd_new_panel_st7789(io_handle, &panel_config, &panel_handle));
+#elif CONFIG_EXAMPLE_LCD_I80_CONTROLLER_NT35510
+    ESP_LOGI(TAG, "Install LCD driver of nt35510");
+    esp_lcd_panel_dev_config_t panel_config = {
+        .reset_gpio_num = EXAMPLE_PIN_NUM_RST,
+        .color_space = ESP_LCD_COLOR_SPACE_BGR,
+        .bits_per_pixel = 16,
+    };
+    ESP_ERROR_CHECK(esp_lcd_new_panel_nt35510(io_handle, &panel_config, &panel_handle));
+#endif
 
     esp_lcd_panel_reset(panel_handle);
     esp_lcd_panel_init(panel_handle);
+    // Set inversion, x/y coordinate order, x/y mirror according to your LCD module spec
+#if CONFIG_EXAMPLE_LCD_I80_CONTROLLER_ST7789
     esp_lcd_panel_invert_color(panel_handle, true);
+#elif CONFIG_EXAMPLE_LCD_I80_CONTROLLER_NT35510
+    esp_lcd_panel_swap_xy(panel_handle, true);
+    esp_lcd_panel_mirror(panel_handle, true, false);
+#endif
     // the gap is LCD panel specific, even panels with the same driver IC, can have different gap value
     esp_lcd_panel_set_gap(panel_handle, 0, 20);