From 487de0ff222484705ff6ee94801bea5a77a2ff94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?D=C3=A1niel=20Buga?= <bugadani@gmail.com>
Date: Mon, 30 Sep 2024 15:23:31 +0200
Subject: [PATCH] Round up in delay_nanos (#2256)

---
 esp-hal/CHANGELOG.md     | 1 +
 esp-hal/src/timer/mod.rs | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/esp-hal/CHANGELOG.md b/esp-hal/CHANGELOG.md
index fcdc83e20..b029e2506 100644
--- a/esp-hal/CHANGELOG.md
+++ b/esp-hal/CHANGELOG.md
@@ -77,6 +77,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - PARL_IO: Fixed an issue that caused garbage to be output at the start of some requests (#2211)
 - TWAI on ESP32 (#2207)
 - TWAI should no longer panic when receiving a non-compliant frame (#2255)
+- OneShotTimer: fixed `delay_nanos` behaviour (#2256)
 
 ### Removed
 
diff --git a/esp-hal/src/timer/mod.rs b/esp-hal/src/timer/mod.rs
index e9134357f..e7d2ea0bf 100644
--- a/esp-hal/src/timer/mod.rs
+++ b/esp-hal/src/timer/mod.rs
@@ -138,7 +138,7 @@ where
 
     /// Pauses execution for *at least* `ns` nanoseconds.
     pub fn delay_nanos(&self, ns: u32) {
-        self.delay((ns as u64 / 1000).micros())
+        self.delay((ns.div_ceil(1000) as u64).micros())
     }
 
     fn delay(&self, us: MicrosDurationU64) {