testing

src/main.c

@@ -0,0 +1,37 @@
+#include <zephyr/devicetree.h>
+#include <zephyr/drivers/gpio.h>
+#include <zephyr/kernel.h>
+#include <zephyr/drivers/uart.h>
+
+#define SLEEP_MS 2000
+
+#define LED_NODE DT_ALIAS(led0)
+#if !DT_NODE_HAS_STATUS(LED_NODE, okay)
+#error "led0 not enabled in devicetree"
+#endif
+
+static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED_NODE, gpios);
+
+int main(void)
+{
+  printk("app started\n");
+
+  if (!gpio_is_ready_dt(&led))
+  {
+    printk("LED GPIO not ready\n");
+    return 0;
+  }
+
+  int ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE);
+  if (ret < 0)
+  {
+    printk("LED GPIO configure failed: %d\n", ret);
+    return 0;
+  }
+
+  char incoming;
+  int i = 0;
+  while (1)
+  {
+  }
+}