From 08cc51fa4fa42d777dee08ba1148afff57be96c0 Mon Sep 17 00:00:00 2001
From: xingchen <1098756313@qq.com>
Date: Fri, 25 Sep 2026 11:56:53 +0800
Subject: [PATCH] feat: add src/reading.cpp

---
 src/reading.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 src/reading.cpp

diff --git a/src/reading.cpp b/src/reading.cpp
new file mode 100644
index 0000000..f664bf3
--- /dev/null
+++ b/src/reading.cpp
@@ -0,0 +1,10 @@
+#include "reading.hpp"
+#include <cmath>
+
+ChannelAssessment assess_channel(const Reading& reading, std::int64_t now_ms) {
+    if (reading.timestamp_ms > now_ms || now_ms - reading.timestamp_ms > 5000)
+        return {reading, ChannelState::Stale};
+    if (!std::isfinite(reading.celsius) || reading.celsius < -40.0 || reading.celsius > 125.0)
+        return {reading, ChannelState::OutOfRange};
+    return {reading, ChannelState::Healthy};
+}