From 25e1baf1d13456ff2395c40ecc5397f01c347d9b Mon Sep 17 00:00:00 2001
From: Brendan <2bndy5@gmail.com>
Date: Sat, 8 Jun 2024 07:44:13 -0700
Subject: [PATCH] fix multicasting to level 2 and 4

---
 circuitpython_nrf24l01/network/constants.py | 5 +++++
 circuitpython_nrf24l01/network/structs.py   | 8 +++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/circuitpython_nrf24l01/network/constants.py b/circuitpython_nrf24l01/network/constants.py
index 524434d..ed30e05 100644
--- a/circuitpython_nrf24l01/network/constants.py
+++ b/circuitpython_nrf24l01/network/constants.py
@@ -29,6 +29,11 @@
 NETWORK_DEFAULT_ADDR = const(0o4444)  #: Primarily used by RF24Mesh.
 MAX_FRAG_SIZE = const(24)  #: Maximum message size for a single frame's message.
 NETWORK_MULTICAST_ADDR = const(0o100)  #: A reserved address for multicast messages.
+#: A reserved address for multicast messages to level 2
+NETWORK_MULTICAST_ADDR_LVL_2 = const(0o10)
+#: A reserved address for multicast messages to level 4
+NETWORK_MULTICAST_ADDR_LVL_4 = const(0o1000)
+
 MESH_LOOKUP_TIMEOUT = const(135)  #: Used for `lookup_address()` & `lookup_node_id()`
 MESH_MAX_POLL = const(4)  #: The max number of contacts made during `renew_address()`.
 MESH_MAX_CHILDREN = const(4)  #: The max number of children for 1 mesh node.
diff --git a/circuitpython_nrf24l01/network/structs.py b/circuitpython_nrf24l01/network/structs.py
index 1fe1393..5b782ad 100644
--- a/circuitpython_nrf24l01/network/structs.py
+++ b/circuitpython_nrf24l01/network/structs.py
@@ -31,6 +31,8 @@
 from .constants import (
     NETWORK_EXT_DATA,
     NETWORK_MULTICAST_ADDR,
+    NETWORK_MULTICAST_ADDR_LVL_2,
+    NETWORK_MULTICAST_ADDR_LVL_4,
     MSG_FRAG_FIRST,
     MSG_FRAG_MORE,
     MSG_FRAG_LAST,
@@ -41,7 +43,11 @@ def is_address_valid(address: Optional[int]) -> bool:
     """Test if a given address is a valid :ref:`Logical Address <Logical Address>`."""
     if address is None:
         return False
-    if address == NETWORK_MULTICAST_ADDR:
+    if address in (
+        NETWORK_MULTICAST_ADDR,
+        NETWORK_MULTICAST_ADDR_LVL_2,
+        NETWORK_MULTICAST_ADDR_LVL_4,
+    ):
         return True
     byte_count = 0
     while address: