samples: subsys: display: lvgl: Add lvgl-encoder-input device

Adds a zephyr,lvgl-encoder-input compatible to the native_posix board overlay and the required code to control an arc widget. Signed-off-by: Fabian Blatz <[email protected]>
Laczen · Sep 13, 2023 · c64724e · c64724e
1 parent 0943428
commit c64724e
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Showing 3 changed files with 44 additions and 4 deletions.
diff --git a/samples/subsys/display/lvgl/boards/native_posix.overlay b/samples/subsys/display/lvgl/boards/native_posix.overlay
@@ -11,6 +11,15 @@
 		sw0 = &button0;
 	};
 
+	qdec {
+		compatible = "gpio-qdec";
+		gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>, <&gpio0 5 GPIO_ACTIVE_HIGH>;
+		steps-per-period = <4>;
+		zephyr,axis = <INPUT_REL_WHEEL>;
+		sample-time-us = <2000>;
+		idle-timeout-ms = <200>;
+	};
+
 	keys: keys {
 		compatible = "gpio-keys";
 		button0: button0 {
@@ -23,6 +32,11 @@
 			gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
 			zephyr,code = <INPUT_KEY_1>;
 		};
+
+		encoder_button: encoder_button {
+			gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
+			zephyr,code = <INPUT_KEY_ENTER>;
+		};
 	};
 
 	lvgl_button_input {
@@ -31,15 +45,21 @@
 		input-codes = <INPUT_KEY_1>;
 		coordinates = <160 120>;
 	};
+
+	lvgl_encoder_input {
+		compatible = "zephyr,lvgl-encoder-input";
+		rotation-input-code = <INPUT_REL_WHEEL>;
+		button-input-code = <INPUT_KEY_ENTER>;
+	};
 };
 
 &gpio0 {
-	ngpios = <3>;
+	ngpios = <6>;
 
 	sdl_gpio {
 		status = "okay";
 		compatible = "zephyr,gpio-emul-sdl";
 		/* Skip pin 0 with the unknown code 0 */
-		scancodes = <0 21 5>;
+		scancodes = <0 21 5 30 31 32>;
 	};
 };
diff --git a/samples/subsys/display/lvgl/prj.conf b/samples/subsys/display/lvgl/prj.conf
@@ -13,6 +13,7 @@ CONFIG_LV_MEM_CUSTOM=y
 CONFIG_LV_USE_LOG=y
 CONFIG_LV_USE_LABEL=y
 CONFIG_LV_USE_BTN=y
+CONFIG_LV_USE_ARC=y
 CONFIG_LV_USE_IMG=y
 CONFIG_LV_USE_MONKEY=y
 CONFIG_LV_FONT_MONTSERRAT_14=y
diff --git a/samples/subsys/display/lvgl/src/main.c b/samples/subsys/display/lvgl/src/main.c
@@ -12,6 +12,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <zephyr/kernel.h>
+#include <lvgl_input_device.h>
 
 #define LOG_LEVEL CONFIG_LOG_DEFAULT_LEVEL
 #include <zephyr/logging/log.h>
@@ -34,7 +35,12 @@ static void button_isr_callback(const struct device *port,
 
 	count = 0;
 }
-#endif
+#endif /* CONFIG_GPIO */
+
+#ifdef CONFIG_LV_Z_ENCODER_INPUT
+static const struct device *lvgl_encoder =
+	DEVICE_DT_GET(DT_COMPAT_GET_ANY_STATUS_OKAY(zephyr_lvgl_encoder_input));
+#endif /* CONFIG_LV_Z_ENCODER_INPUT */
 
 static void lv_btn_click_callback(lv_event_t *e)
 {
@@ -82,7 +88,20 @@ int main(void)
 			return 0;
 		}
 	}
-#endif
+#endif /* CONFIG_GPIO */
+
+#ifdef CONFIG_LV_Z_ENCODER_INPUT
+	lv_obj_t *arc;
+	lv_group_t *arc_group;
+
+	arc = lv_arc_create(lv_scr_act());
+	lv_obj_align(arc, LV_ALIGN_CENTER, 0, 0);
+	lv_obj_set_size(arc, 150, 150);
+
+	arc_group = lv_group_create();
+	lv_group_add_obj(arc_group, arc);
+	lv_indev_set_group(lvgl_input_get_indev(lvgl_encoder), arc_group);
+#endif /* CONFIG_LV_Z_ENCODER_INPUT */
 
 	if (IS_ENABLED(CONFIG_LV_Z_POINTER_KSCAN) || IS_ENABLED(CONFIG_LV_Z_POINTER_INPUT)) {
 		lv_obj_t *hello_world_button;