fix frameAvailable race condition (ExpressLRS#2591)

ot0tot · Mar 19, 2024 · d48977e · d48977e
1 parent b0f30c1
commit d48977e
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/src/src/rx-serial/devSerialIO.cpp b/src/src/rx-serial/devSerialIO.cpp
@@ -44,12 +44,16 @@ static int timeout()
 
     uint32_t duration = 10; // 10ms callback (i.e. when no theres no model match)
     // only send frames if we have a model match
+    noInterrupts();
+    bool available = frameAvailable;
+    bool missed = frameMissed;
+    frameAvailable = false;
+    frameMissed = false;
+    interrupts();
     if (connectionHasModelMatch)
     {
-        duration = serialIO->sendRCFrame(frameAvailable, frameMissed, ChannelData);
+        duration = serialIO->sendRCFrame(available, missed, ChannelData);
     }
-    frameAvailable = false;
-    frameMissed = false;
     // still get telemetry and send link stats if theres no model match
     serialIO->processSerialInput();
     serialIO->sendQueuedData(serialIO->getMaxSerialWriteSize());