diff --git a/prj.conf b/prj.conf
index 8b13789..4bfe201 100644
--- a/prj.conf
+++ b/prj.conf
@@ -1 +1,10 @@
 
+CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=y
+CONFIG_SHELL=y
+CONFIG_CRYPTO=y
+CONFIG_CONSOLE=y
+CONFIG_LOG=y
+CONFIG_LOG_BACKEND_UART=y
+
+CONFIG_ZIGBEE=y
+CONFIG_ZIGBEE_ROLE_ROUTER=y
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 75a9c07..9e3d89c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,26 @@
 #include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+
+#include <zephyr/drivers/gpio.h>
+
+LOG_MODULE_REGISTER(app, LOG_LEVEL_INF);
 
 int main(void)
 {
-        return 0;
+        LOG_INF("Starting main");
+
+        const struct gpio_dt_spec led_green = GPIO_DT_SPEC_GET(DT_NODELABEL(led0_green), gpios);
+
+        gpio_pin_configure_dt(&led_green, GPIO_OUTPUT | GPIO_ACTIVE_LOW);
+
+
+        while(true) {
+                gpio_pin_set_dt(&led_green, 1);
+
+                k_msleep(500);
+
+                gpio_pin_set_dt(&led_green, 0);
+
+                k_msleep(500);
+        }
 }