From 11b3ba224cc21ec279b55471f9a46ed8e29d5f74 Mon Sep 17 00:00:00 2001
From: mikeller <github@ike.ch>
Date: Sun, 27 Oct 2019 23:09:33 +1300
Subject: [PATCH] Moved MCU specific defines into 'common_pre.h' if not used in
 the STM32 libraries.

---
 make/mcu/STM32F7.mk          | 2 ++
 make/mcu/STM32H7.mk          | 3 ++-
 src/main/target/common_pre.h | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/make/mcu/STM32F7.mk b/make/mcu/STM32F7.mk
index 6d8f71568e..ba62d7aadd 100644
--- a/make/mcu/STM32F7.mk
+++ b/make/mcu/STM32F7.mk
@@ -125,7 +125,9 @@ endif
 #Flags
 ARCH_FLAGS      = -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-sp-d16 -fsingle-precision-constant -Wdouble-promotion
 
+# Flags that are used in the STM32 libraries
 DEVICE_FLAGS    = -DUSE_HAL_DRIVER -DUSE_FULL_LL_DRIVER
+
 ifeq ($(TARGET),$(filter $(TARGET),$(F7X5XI_TARGETS)))
 DEVICE_FLAGS   += -DSTM32F765xx
 LD_SCRIPT       = $(LINKER_DIR)/stm32_flash_f765.ld
diff --git a/make/mcu/STM32H7.mk b/make/mcu/STM32H7.mk
index 9682e2d2dd..971b673fbc 100644
--- a/make/mcu/STM32H7.mk
+++ b/make/mcu/STM32H7.mk
@@ -149,7 +149,8 @@ endif
 #Flags
 ARCH_FLAGS      = -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-sp-d16 -fsingle-precision-constant -Wdouble-promotion
 
-DEVICE_FLAGS    = -DUSE_HAL_DRIVER -DUSE_FULL_LL_DRIVER -DUSE_DMA_RAM
+# Flags that are used in the STM32 libraries
+DEVICE_FLAGS    = -DUSE_HAL_DRIVER -DUSE_FULL_LL_DRIVER
 
 #
 # H743xI : 2M FLASH, 1M RAM (H753xI also)
diff --git a/src/main/target/common_pre.h b/src/main/target/common_pre.h
index cdf5a1a1cf..664cd05218 100644
--- a/src/main/target/common_pre.h
+++ b/src/main/target/common_pre.h
@@ -120,6 +120,7 @@
 #define USE_DMA_SPEC
 #define USE_TIMER_MGMT
 #define USE_PERSISTENT_OBJECTS
+#define USE_DMA_RAM
 #endif
 
 #if defined(STM32F4) || defined(STM32F7) || defined(STM32H7)