From ff59d1588cf3747a0a4a3e5cefcdea8da404c110 Mon Sep 17 00:00:00 2001
From: hangpersonal <hangcui1201@gmail.com>
Date: Tue, 6 Oct 2026 23:54:07 -0700
Subject: [PATCH] Update repo

---
 .../boards/nucleo_f767zi.overlay              |  2 ++
 apps/05_button_exti_irq/src/main.c            | 34 +++++++++++++++----
 2 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/apps/05_button_exti_irq/boards/nucleo_f767zi.overlay b/apps/05_button_exti_irq/boards/nucleo_f767zi.overlay
index 5297d83..deea08c 100644
--- a/apps/05_button_exti_irq/boards/nucleo_f767zi.overlay
+++ b/apps/05_button_exti_irq/boards/nucleo_f767zi.overlay
@@ -8,7 +8,9 @@
 	
 	gpio_keys {
 		compatible = "gpio-keys";
+		debounce-interval-ms = <30>;
 		
+		/* <node_label>: <node_name> {}; */
 		user_button0: button {
 			label = "Button";
 			gpios = <&gpioc 13 GPIO_ACTIVE_HIGH>;
diff --git a/apps/05_button_exti_irq/src/main.c b/apps/05_button_exti_irq/src/main.c
index 92628e6..0c3e735 100644
--- a/apps/05_button_exti_irq/src/main.c
+++ b/apps/05_button_exti_irq/src/main.c
@@ -10,9 +10,14 @@
 #error "Board does not define alias sw0. Add a boad overlay"
 #endif
 
+const struct gpio_dt_spec led = 
+    GPIO_DT_SPEC_GET(DT_ALIAS(led0), gpios);
+
 static const struct gpio_dt_spec button = 
     GPIO_DT_SPEC_GET(DT_ALIAS(sw0), gpios); 
 
+bool led_on;
+
 static struct gpio_callback button_cb;
 
 static void button_isr(const struct device *port, 
@@ -30,15 +35,36 @@ static void button_isr(const struct device *port,
         printk("[IRQ] Button state: %s\r\n", v ? "ACTIVE" : "INVACTIVE");
     }
 
+    led_on = !led_on;
+    gpio_pin_set_dt(&led, (int)led_on);
+
 }
 
 int main(void) {
 
-    if(!device_is_ready(button.port)) {
+    int ret;
+
+    if (!device_is_ready(led.port) || !device_is_ready(button.port)) {
+        printk("GPIO device not ready\n");
         return 0;
     }
 
-    if(gpio_pin_configure_dt(&button, GPIO_INPUT) != 0) {
+    ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_INACTIVE);
+    if (ret != 0) {
+        printk("Failed to configure LED: %d\n", ret);
+        return 0;
+    }
+
+    ret = gpio_pin_configure_dt(&button, GPIO_INPUT);
+    if (ret != 0) {
+        printk("Failed to configure button: %d\n", ret);
+        return 0;
+    }
+
+    // gpio_pin_interrupt_configure_dt(&button, GPIO_INT_EDGE_BOTH)
+    ret = gpio_pin_interrupt_configure_dt(&button, GPIO_INT_EDGE_TO_ACTIVE);
+    if (ret != 0) {
+        printk("Failed to configure interrupt: %d\n", ret);
         return 0;
     }
 
@@ -46,10 +72,6 @@ int main(void) {
     gpio_init_callback(&button_cb, button_isr, BIT(button.pin));
     gpio_add_callback(button.port, &button_cb);
 
-    if(gpio_pin_interrupt_configure_dt(&button, GPIO_INT_EDGE_BOTH) != 0) {
-        return 0;
-    }
-
     printk("\r\n[EXTI] Button pin interrupt is ready. Press button\r\n");
 
 	while (1) {