Initial push

1 files changed, 21 insertions, 0 deletions

diff --git a/stacks/daemon/tx_pace.py b/stacks/daemon/tx_pace.py
new file mode 100644
index 0000000..b7e284b
--- /dev/null
+++ b/stacks/daemon/tx_pace.py
@@ -0,0 +1,21 @@
+"""Minimum idle gap between RF/KISS frame sends (host-side pacing)."""
+from __future__ import annotations
+
+import threading
+import time
+
+MIN_TX_GAP_SEC = 1.5
+
+_lock = threading.Lock()
+_last_tx = 0.0
+
+
+def tx_pace_before_send() -> None:
+    """Sleep until at least MIN_TX_GAP_SEC since the previous send."""
+    global _last_tx
+    with _lock:
+        now = time.monotonic()
+        wait = MIN_TX_GAP_SEC - (now - _last_tx)
+        if wait > 0:
+            time.sleep(wait)
+        _last_tx = time.monotonic()