Initial Release

system/hello_double_tap/hello_double_tap.c

@@ -0,0 +1,21 @@
+/**
+ * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "pico/stdlib.h"
+
+// This is a regular old LED blinking example, however it is linked with double_tap_usb_boot
+// so pressing reset quickly twice, will reset into USB bootloader
+int main() {
+    const uint LED_PIN = 21;
+    gpio_init(LED_PIN);
+    gpio_set_dir(LED_PIN, GPIO_OUT);
+    while (true) {
+        gpio_put(LED_PIN, 1);
+        sleep_ms(250);
+        gpio_put(LED_PIN, 0);
+        sleep_ms(250);
+    }
+}