From d2403437fff723f2bb6625fe3b5bfbb689e7e358 Mon Sep 17 00:00:00 2001
From: Chloe Bethel <chloe@9net.org>
Date: Sun, 19 Oct 2025 10:35:30 +0100
Subject: [PATCH] Make packet pool dynamic again on STM32 as a workaround

---
 src/mesh/Router.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/mesh/Router.cpp b/src/mesh/Router.cpp
index 60637cbd1..5cf8bfa7d 100644
--- a/src/mesh/Router.cpp
+++ b/src/mesh/Router.cpp
@@ -35,6 +35,15 @@
     (MAX_RX_TOPHONE + MAX_RX_FROMRADIO + 2 * MAX_TX_QUEUE +                                                                      \
      2) // max number of packets which can be in flight (either queued from reception or queued for sending)
 
+static MemoryDynamic<meshtastic_MeshPacket> dynamicPool;
+Allocator<meshtastic_MeshPacket> &packetPool = dynamicPool;
+#elif defined(ARCH_STM32WL)
+// On STM32 there isn't enough heap left over for the rest of the firmware if we allocate this statically.
+// For now, make it dynamic again.
+#define MAX_PACKETS                                                                                                              \
+    (MAX_RX_TOPHONE + MAX_RX_FROMRADIO + 2 * MAX_TX_QUEUE +                                                                      \
+     2) // max number of packets which can be in flight (either queued from reception or queued for sending)
+
 static MemoryDynamic<meshtastic_MeshPacket> dynamicPool;
 Allocator<meshtastic_MeshPacket> &packetPool = dynamicPool;
 #else