hello pico

01_hello_pico/src/hello.c

@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include "pico/stdlib.h"
+#include "hardware/gpio.h"
+#include "pico/binary_info.h"
+
+const uint LED_PIN = 25;
+
+int main()
+{
+    //bi_decl(bi_program_description("This is a test binary."));
+    //(bi_1pin_with_name(LED_PIN, "On-board LED"));
+
+    stdio_init_all();
+
+    gpio_init(LED_PIN);
+    gpio_set_dir(LED_PIN, GPIO_OUT);
+
+    while (true)
+    {
+        gpio_put(LED_PIN, 0);
+        sleep_ms(250);
+        gpio_put(LED_PIN, 1);
+        puts("Hello World~~!\n");
+        sleep_ms(1000);
+    }
+}