Additional Diagnostics

include/format_duration.h

@@ -0,0 +1,11 @@
+#pragma once
+
+String format_duration(time_t seconds)
+{
+  auto days = seconds / (60 * 60 * 24);
+  auto tm = gmtime(&seconds);
+  String duration = days > 0 ? String(days) + " days, " : "";
+  char time_buff[9];
+  strftime(time_buff, 9, "%H:%M:%S", tm);
+  return duration + time_buff;
+}