Moved action to top level.

Removed old iterations of the project and moved the files from 02-usart
to the root directory since that's the sole place where the action is
and that subproject has outgrown its initial title.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/kern/delay.c b/src/kern/delay.c
new file mode 100644
index 0000000..28ef710
--- /dev/null
+++ b/src/kern/delay.c
@@ -0,0 +1,9 @@
+#include "kern/delay.h"
+
+void delay(uint32_t delay)
+{
+  while (delay--) {
+    /* needed to keep the compiler from optimizing away the loop. */
+    asm volatile("");
+  }
+}