1 files changed, 23 insertions, 0 deletions
diff --git a/third_party/rust/wio/src/sleep.rs b/third_party/rust/wio/src/sleep.rs
new file mode 100644
index 0000000000..bfe2cda5fa
--- /dev/null
+++ b/third_party/rust/wio/src/sleep.rs
@@ -0,0 +1,23 @@
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+use {k32, w};
+
+pub fn sleep(ms: u32) {
+    unsafe { k32::Sleep(ms) }
+}
+#[derive(Debug, Eq, PartialEq)]
+pub enum WakeReason {
+    TimedOut,
+    CallbacksFired,
+}
+pub fn sleep_alertable(ms: u32) -> WakeReason {
+    let ret = unsafe { k32::SleepEx(ms, w::TRUE) };
+    match ret {
+        0 => WakeReason::TimedOut,
+        w::WAIT_IO_COMPLETION => WakeReason::CallbacksFired,
+        _ => unreachable!("SleepEx returned weird value of {:?}", ret),
+    }
+}