From 56da754a9670fe51ea6c15f62b54a11c2e92c7fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lauri=20V=C3=B5sandi?= <lauri.vosandi@gmail.com>
Date: Wed, 10 Sep 2025 08:06:17 +0300
Subject: [PATCH] Report boot time only once it has meaningful value

---
 firmware/esp32c3-arduino/esp32c3-arduino.ino | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/firmware/esp32c3-arduino/esp32c3-arduino.ino b/firmware/esp32c3-arduino/esp32c3-arduino.ino
index 37bec8d..9533953 100644
--- a/firmware/esp32c3-arduino/esp32c3-arduino.ino
+++ b/firmware/esp32c3-arduino/esp32c3-arduino.ino
@@ -398,9 +398,11 @@ void handleMetrics(){
     buf += displayTaskIterationsCount;
     buf += "\n";
 
-    buf += "nixie_boot_timestamp_seconds ";
-    buf += bootTimestamp;
-    buf += "\n";
+    if (bootTimestamp > 0) {
+        buf += "nixie_boot_timestamp_seconds ";
+        buf += bootTimestamp;
+        buf += "\n";
+    }
 
     buf += "nixie_last_ntp_sync_timestamp_seconds ";
     buf += lastNtpSyncTimestamp;