Update repo

apps/05_button_exti_irq/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.20.0)
+
+# Locate the Zephyr build system as a CMake package
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+# Project name
+project(button_exti_irq)
+
+# Add source files belong to this application
+target_sources(app PRIVATE src/main.c)

apps/05_button_exti_irq/boards/nucleo_f767zi.overlay

@@ -0,0 +1,33 @@
+/ {
+    aliases {
+        led0 = &red_led;
+        led1 = &blue_led;
+        led2 = &green_led;
+		sw0 = &user_button0;
+    };
+	
+	gpio_keys {
+		compatible = "gpio-keys";
+		
+		user_button0: button {
+			label = "Button";
+			gpios = <&gpioc 13 GPIO_ACTIVE_HIGH>;
+			zephyr,code = <INPUT_KEY_0>;
+		};
+	};
+};
+
+&adc1{
+    pinctrl-0 = <&adc1_in1_pa1 &adc1_in4_pa4 &adc1_in8_pb0>;
+    pinctrl-names = "default";
+	st,adc-prescaler = <4>;
+	status = "okay";
+};
+
+/*---Uncomment this block ONLY if your build complains the labels are undeclared---
+&pinctrl{
+    adc1_in1_pa1: adc1_in1_pa1 { pinmux = <STM32_PINMUX('A', 1, ANALOG)>; }
+    adc1_in4_pa4: adc1_in4_pa4 { pinmux = <STM32_PINMUX('A', 4, ANALOG)>; }
+    adc1_in8_pb0: adc1_in8_pb0 { pinmux = <STM32_PINMUX('B', 0, ANALOG)>; }
+}
+*/

apps/05_button_exti_irq/boards/stm32f4_disco.overlay

@@ -0,0 +1,24 @@
+/ {
+    aliases {
+        led0 = &red_led_5;
+        led1 = &blue_led_6;
+        led2 = &green_led_4;
+        led3 = &orange_led_3;
+		sw0 = &user_button;
+    };
+};
+
+&adc1{
+    pinctrl-0 = <&adc1_in1_pa1 &adc1_in4_pa4 &adc1_in8_pb0>;
+    pinctrl-names = "default";
+	st,adc-prescaler = <4>;
+	status = "okay";
+};
+
+/*---Uncomment this block ONLY if your build complains the labels are undeclared---
+&pinctrl{
+    adc1_in1_pa1: adc1_in1_pa1 { pinmux = <STM32_PINMUX('A', 1, ANALOG)>; }
+    adc1_in4_pa4: adc1_in4_pa4 { pinmux = <STM32_PINMUX('A', 4, ANALOG)>; }
+    adc1_in8_pb0: adc1_in8_pb0 { pinmux = <STM32_PINMUX('B', 0, ANALOG)>; }
+}
+*/

apps/05_button_exti_irq/prj.conf

@@ -0,0 +1,7 @@
+CONFIG_GPIO=y
+CONFIG_CONSOLE=y
+CONFIG_PRINTK=y
+CONFIG_SERIAL=y
+CONFIG_ADC=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+

apps/05_button_exti_irq/src/main.c

@@ -0,0 +1,66 @@
+#include <zephyr/kernel.h>
+#include <zephyr/device.h>
+#include <zephyr/devicetree.h>
+#include <zephyr/sys/printk.h>
+#include <zephyr/drivers/gpio.h>
+#include <zephyr/drivers/uart.h>
+#include <zephyr/drivers/adc.h>
+
+
+#if !DT_NODE_HAS_STATUS(DT_ALIAS(sw0), okay)
+#error "Board does not define alias sw0. Add a boad overlay"
+#endif
+
+static const struct gpio_dt_spec button = 
+    GPIO_DT_SPEC_GET(DT_ALIAS(sw0), gpios); 
+
+static struct gpio_callback button_cb;
+
+
+static void button_isr(const struct device *port, 
+                       struct gpio_callback *cb, 
+                       gpio_port_pins_t pins)
+{
+    ARG_UNUSED(port);
+    ARG_UNUSED(pins);
+    ARG_UNUSED(cb);
+
+    // Do something
+    int v = gpio_pin_get_dt(&button);
+    
+    if(v >= 0) {
+        printk("[IRQ] Button state: %s\r\n", v ? "ACTIVE" : "INVACTIVE");
+    }
+
+}
+
+
+int main(void)
+{
+    if(!device_is_ready(button.port)) {
+        return 0;
+    }
+
+    if(gpio_pin_configure_dt(&button, GPIO_INPUT) != 0) {
+        return 0;
+    }
+
+    // Set up callback and register it
+    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) {
+
+		k_sleep(K_FOREVER);
+
+	}
+
+	return 0;
+}