From 9bb29aec36d3cf01117024397aefb5a419364550 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Thu, 18 Jan 2024 10:43:11 +1100
Subject: [PATCH] AP_Periph: ensure no external flash in periph

bootloader protocol cannot support it in its current form
---
 Tools/AP_Periph/can.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Tools/AP_Periph/can.cpp b/Tools/AP_Periph/can.cpp
index d01fcf9f9b..3bd020cd2f 100644
--- a/Tools/AP_Periph/can.cpp
+++ b/Tools/AP_Periph/can.cpp
@@ -148,6 +148,10 @@ HALSITL::CANIface* AP_Periph_FW::can_iface_periph[HAL_NUM_CAN_IFACES];
 SLCAN::CANIface AP_Periph_FW::slcan_interface;
 #endif
 
+#ifdef EXT_FLASH_SIZE_MB
+static_assert(EXT_FLASH_SIZE_MB == 0, "DroneCAN bootloader cannot support external flash");
+#endif
+
 /*
  * Node status variables
  */