add as_nanos and from_nanos where missing

1 files changed, 13 insertions, 1 deletions

diff --git a/embassy-time/src/instant.rs b/embassy-time/src/instant.rs
index 6571bea62..a311b365c 100644
--- a/embassy-time/src/instant.rs
+++ b/embassy-time/src/instant.rs
@@ -1,7 +1,7 @@
 use core::fmt;
 use core::ops::{Add, AddAssign, Sub, SubAssign};
 
-use super::{Duration, GCD_1K, GCD_1M, TICK_HZ};
+use super::{Duration, GCD_1K, GCD_1M, GCD_1G, TICK_HZ};
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
@@ -29,6 +29,13 @@ impl Instant {
         Self { ticks }
     }
 
+    /// Create an Instant from a nanosecond count since system boot.
+    pub const fn from_nanos(nanos: u64) -> Self {
+        Self {
+            ticks: nanos * (TICK_HZ / GCD_1G) / (1_000_000_000 / GCD_1G),
+        }
+    }
+
     /// Create an Instant from a microsecond count since system boot.
     pub const fn from_micros(micros: u64) -> Self {
         Self {
@@ -101,6 +108,11 @@ impl Instant {
         self.ticks * (1_000_000 / GCD_1M) / (TICK_HZ / GCD_1M)
     }
 
+    /// Nanoseconds since system boot.
+    pub const fn as_nanos(&self) -> u64 {
+        self.ticks * (1_000_000_000 / GCD_1G) / (TICK_HZ / GCD_1G)
+    }
+
     /// Duration between this Instant and another Instant
     /// Panics on over/underflow.
     pub fn duration_since(&self, earlier: Instant) -> Duration {