From acfd220920ed78676b557eb7a200830139091037 Mon Sep 17 00:00:00 2001
From: Niklas Hauser <niklas.hauser@rwth-aachen.de>
Date: Fri, 9 Aug 2024 22:46:28 +0200
Subject: [PATCH] =?UTF-8?q?[fiber]=20Guarantee=20minimum=20for=20durations?=
 =?UTF-8?q?=20<=201=C2=B5s?=
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---
 src/modm/processing/fiber/functions.hpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/modm/processing/fiber/functions.hpp b/src/modm/processing/fiber/functions.hpp
index abfb1482db..4f1c11d46b 100644
--- a/src/modm/processing/fiber/functions.hpp
+++ b/src/modm/processing/fiber/functions.hpp
@@ -87,12 +87,20 @@ poll_for(std::chrono::duration<Rep, Period> sleep_duration, Function &&condition
 							  std::chrono::duration<Rep, std::milli>>,
 		modm::chrono::milli_clock, modm::chrono::micro_clock>;
 
+	// Ensure the sleep duration is at least 1 clock tick
+	using Duration = typename Clock::duration;
+	Duration clock_sleep_duration(std::chrono::duration_cast<Duration>(sleep_duration));
+	if constexpr (std::ratio_less_v<Period, typename Clock::period>) {
+		if (clock_sleep_duration == Duration(0))
+			clock_sleep_duration = Duration(1);
+	}
+
 	const auto start = Clock::now();
 	do {
 		modm::this_fiber::yield();
 		if (std::forward<Function>(condition)()) return true;
 	}
-	while((Clock::now() - start) <= sleep_duration);
+	while((Clock::now() - start) <= clock_sleep_duration);
 	return false;
 }