1 files changed, 39 insertions, 5 deletions
diff --git a/software/mpu/Makefile b/software/mpu/Makefile
index 2204662..3b242b5 100644
--- a/software/mpu/Makefile
+++ b/software/mpu/Makefile
@@ -41,6 +41,31 @@ endif
 # Architecture or project specific options
 #
 
+# set this to either F103 or F405
+ifeq ($(MURSAT_TRGT),)
+  MURSAT_TRGT = F405
+endif
+
+ifeq ($(MURSAT_TRGT),F103)
+  MCU = cortex-m3
+  STM_TYPE = STM32F1xx
+  STM_SUBTYPE = STM32F103xE
+else ifeq ($(MURSAT_TRGT),F405)
+  MCU  = cortex-m4
+  STM_TYPE = STM32F4xx
+  STM_SUBTYPE = STM32F405xG
+else
+  $(error This MCU is not supported)
+endif
+
+ifeq ($(MCU),cortex-m4)
+  # Enables the use of FPU on Cortex-M4.
+  # Enable this if you really want to use the STM FWLib.
+  ifeq ($(USE_FPU),)
+    USE_FPU = yes
+  endif
+endif
+
 # Enable this if you really want to use the STM FWLib.
 ifeq ($(USE_FWLIB),)
   USE_FWLIB = no
@@ -60,14 +85,14 @@ PROJECT = mpu
 # Imported source files and paths
 CHIBIOS = ../../contrib/ChibiOS_2.6.0
 include board.mk
-include $(CHIBIOS)/os/hal/platforms/STM32F1xx/platform.mk
+include $(CHIBIOS)/os/hal/platforms/$(STM_TYPE)/platform.mk
 include $(CHIBIOS)/os/hal/hal.mk
-include $(CHIBIOS)/os/ports/GCC/ARMCMx/STM32F1xx/port.mk
+include $(CHIBIOS)/os/ports/GCC/ARMCMx/$(STM_TYPE)/port.mk
 include $(CHIBIOS)/os/kernel/kernel.mk
 include $(CHIBIOS)/test/test.mk
 
 # Define linker script file here
-LDSCRIPT= $(PORTLD)/STM32F103xE.ld
+LDSCRIPT= $(PORTLD)/$(STM_SUBTYPE).ld
 
 # C sources that can be compiled in ARM or THUMB mode depending on the global
 # setting.
@@ -122,8 +147,6 @@ INCDIR = $(PORTINC) $(KERNINC) $(TESTINC) \
 # Compiler settings
 #
 
-MCU  = cortex-m3
-
 #TRGT = arm-elf-
 TRGT = arm-none-eabi-
 CC   = $(TRGT)gcc
@@ -201,6 +224,17 @@ ULIBS =
 # End of user defines
 ##############################################################################
 
+DDEFS += -DMURSAT_TRGT=$(MURSAT_TRGT) -DMCUCONF_INC=\"mcuconf-$(MURSAT_TRGT).h\"
+
+ifeq ($(MCU),cortex-m4)
+  ifeq ($(USE_FPU),yes)
+    USE_OPT += -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -fsingle-precision-constant
+    DDEFS += -DCORTEX_USE_FPU=TRUE
+  else
+    DDEFS += -DCORTEX_USE_FPU=FALSE
+  endif
+endif
+
 ifeq ($(USE_FWLIB),yes)
   include $(CHIBIOS)/ext/stm32lib/stm32lib.mk
   CSRC += $(STM32SRC)