2 files changed, 22 insertions, 0 deletions
diff --git a/firmware/src/main/CMakeLists.txt b/firmware/src/main/CMakeLists.txt
new file mode 100644
index 0000000..07686dc
--- /dev/null
+++ b/firmware/src/main/CMakeLists.txt
@@ -0,0 +1,2 @@
+idf_component_register(SRCS "hello_world_main.c"
+                    INCLUDE_DIRS "")
diff --git a/firmware/src/main/hello_world_main.c b/firmware/src/main/hello_world_main.c
new file mode 100644
index 0000000..1222e05
--- /dev/null
+++ b/firmware/src/main/hello_world_main.c
@@ -0,0 +1,20 @@
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "driver/gpio.h"
+#include "hal/gpio_types.h"
+
+#include <stdio.h>
+
+void app_main(void)
+{
+	gpio_reset_pin(3);
+	gpio_set_direction(3, GPIO_MODE_OUTPUT);
+	while (1) {
+		printf("Hello world!\n");
+		fflush(stdout);
+		gpio_set_level(3, 1);
+		vTaskDelay(1000 / portTICK_PERIOD_MS);
+		gpio_set_level(3, 0);
+		vTaskDelay(1000 / portTICK_PERIOD_MS);
+	}
+}