From 3623d20479cb7ce1449901d801e68a46a922c96d Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Fri, 1 Sep 2023 19:03:44 +1000
Subject: [PATCH] waf: enable CANARD_MULTI_IFACE on AP_Periph if more than one
 interface

---
 Tools/ardupilotwaf/chibios.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Tools/ardupilotwaf/chibios.py b/Tools/ardupilotwaf/chibios.py
index faf094c4fd..819b3474c5 100644
--- a/Tools/ardupilotwaf/chibios.py
+++ b/Tools/ardupilotwaf/chibios.py
@@ -578,6 +578,8 @@ def configure(cfg):
     load_env_vars(cfg.env)
     if env.HAL_NUM_CAN_IFACES and not env.AP_PERIPH:
         setup_canmgr_build(cfg)
+    if env.HAL_NUM_CAN_IFACES and env.AP_PERIPH and int(env.HAL_NUM_CAN_IFACES)>1 and not env.BOOTLOADER:
+        env.DEFINES += [ 'CANARD_MULTI_IFACE=1' ]
     setup_optimization(cfg.env)
 
 def generate_hwdef_h(env):