1 files changed, 28 insertions, 0 deletions
diff --git a/library/std/src/os/xous/services/systime.rs b/library/std/src/os/xous/services/systime.rs
new file mode 100644
index 000000000..bbb875c69
--- /dev/null
+++ b/library/std/src/os/xous/services/systime.rs
@@ -0,0 +1,28 @@
+use crate::os::xous::ffi::{connect, Connection};
+use core::sync::atomic::{AtomicU32, Ordering};
+
+pub(crate) enum SystimeScalar {
+    GetUtcTimeMs,
+}
+
+impl Into<[usize; 5]> for SystimeScalar {
+    fn into(self) -> [usize; 5] {
+        match self {
+            SystimeScalar::GetUtcTimeMs => [3, 0, 0, 0, 0],
+        }
+    }
+}
+
+/// Return a `Connection` to the systime server. This server is used for reporting the
+/// realtime clock.
+pub(crate) fn systime_server() -> Connection {
+    static SYSTIME_SERVER_CONNECTION: AtomicU32 = AtomicU32::new(0);
+    let cid = SYSTIME_SERVER_CONNECTION.load(Ordering::Relaxed);
+    if cid != 0 {
+        return cid.into();
+    }
+
+    let cid = connect("timeserverpublic".try_into().unwrap()).unwrap();
+    SYSTIME_SERVER_CONNECTION.store(cid.into(), Ordering::Relaxed);
+    cid
+}