From 8cca72d90d38ff48924c6a0d0e265bf9a9644457 Mon Sep 17 00:00:00 2001
From: kbracher <k.bracher@fasttube.de>
Date: Thu, 25 Apr 2024 18:47:17 +0200
Subject: [PATCH] add more informative error message for FDCAN peripheral
 config

---
 can-halal.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/can-halal.h b/can-halal.h
index c1c5504..8351424 100644
--- a/can-halal.h
+++ b/can-halal.h
@@ -19,6 +19,9 @@
 #elif defined(STM32H7)
 #include "stm32h7xx_hal.h"
 #define FTCAN_IS_FDCAN
+#ifndef FTCAN_NUM_FILTERS
+    #error "Please configure the number of filters in CubeMX, and then add a compiler define for FTCAN_NUM_FILTERS"
+#endif
 #else
 #error "Couldn't detect STM family"
 #endif