##############################################################################
# Build global options
# NOTE: Can be overridden externally.
#

# Compiler options here.
ifeq ($(USE_OPT),)
  USE_OPT = -O2 -ggdb -fomit-frame-pointer -falign-functions=16
endif

# C specific options here (added to USE_OPT).
ifeq ($(USE_COPT),)
  USE_COPT = -std=gnu11
endif

# C++ specific options here (added to USE_OPT).
ifeq ($(USE_CPPOPT),)
  USE_CPPOPT = -fno-rtti
endif

# Enable this if you want the linker to remove unused code and data
ifeq ($(USE_LINK_GC),)
  USE_LINK_GC = yes
endif

# Linker extra options here.
ifeq ($(USE_LDOPT),)
  USE_LDOPT = 
endif

# Enable this if you want link time optimizations (LTO)
ifeq ($(USE_LTO),)
  USE_LTO = no
endif

# If enabled, this option allows to compile the application in THUMB mode.
ifeq ($(USE_THUMB),)
  USE_THUMB = yes
endif

# Enable this if you want to see the full log while compiling.
ifeq ($(USE_VERBOSE_COMPILE),)
  USE_VERBOSE_COMPILE = no
endif

# If enabled, this option makes the build process faster by not compiling
# modules not used in the current configuration.
ifeq ($(USE_SMART_BUILD),)
  USE_SMART_BUILD = yes
endif

#
# Build global options
##############################################################################

##############################################################################
# Architecture or project specific options
#

# Stack size to be allocated to the Cortex-M process stack. This stack is
# the stack used by the main() thread.
ifeq ($(USE_PROCESS_STACKSIZE),)
  USE_PROCESS_STACKSIZE = 0x200
endif

# Stack size to the allocated to the Cortex-M main/exceptions stack. This
# stack is used for processing interrupts and exceptions.
ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
  USE_EXCEPTIONS_STACKSIZE = 0x400
endif

# Enables the use of FPU (no, softfp, hard).
ifeq ($(USE_FPU),)
  USE_FPU = no
endif

#
# Architecture or project specific options
##############################################################################

##############################################################################
# Project, sources and paths
#

# Define project name here
PROJECT = pd-buddy-firmware

# Imported source files and paths
CHIBIOS = ChibiOS
PDBLIB = lib

# Licensing files.
include $(CHIBIOS)/os/license/license.mk
# Startup files.
include $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC/mk/startup_stm32f0xx.mk
# HAL-OSAL files (optional).
include $(CHIBIOS)/os/hal/hal.mk
include $(CHIBIOS)/os/hal/ports/STM32/STM32F0xx/platform.mk
include $(CHIBIOS)/../boards/PD_BUDDY_SINK/board.mk
include $(CHIBIOS)/os/hal/osal/rt/osal.mk
include $(CHIBIOS)/os/hal/lib/streams/streams.mk
# RTOS files (optional).
include $(CHIBIOS)/os/rt/rt.mk
include $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/mk/port_v6m.mk
# Other files (optional).
include $(CHIBIOS)/test/lib/test.mk
include $(CHIBIOS)/test/rt/rt_test.mk
include $(CHIBIOS)/test/oslib/oslib_test.mk
include $(PDBLIB)/pd-buddy.mk

# Define linker script file here
LDSCRIPT=$(CHIBIOS)/../ld/STM32F072x8.ld

# C sources that can be compiled in ARM or THUMB mode depending on the global
# setting.
CSRC = $(ALLCSRC) \
       $(TESTSRC) \
       $(wildcard src/*.c)

# C++ sources that can be compiled in ARM or THUMB mode depending on the global
# setting.
CPPSRC = $(ALLCPPSRC)

# C sources to be compiled in ARM mode regardless of the global setting.
# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
#       option that results in lower performance and larger code size.
ACSRC =

# C++ sources to be compiled in ARM mode regardless of the global setting.
# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
#       option that results in lower performance and larger code size.
ACPPSRC =

# C sources to be compiled in THUMB mode regardless of the global setting.
# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
#       option that results in lower performance and larger code size.
TCSRC =

# C sources to be compiled in THUMB mode regardless of the global setting.
# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
#       option that results in lower performance and larger code size.
TCPPSRC =

# List ASM source files here
ASMSRC = $(ALLASMSRC)
ASMXSRC = $(ALLXASMSRC)

INCDIR = $(ALLINC) $(TESTINC)

#
# Project, sources and paths
##############################################################################

##############################################################################
# Compiler settings
#

MCU  = cortex-m0

#TRGT = arm-elf-
TRGT = arm-none-eabi-
CC   = $(TRGT)gcc
CPPC = $(TRGT)g++
# Enable loading with g++ only if you need C++ runtime support.
# NOTE: You can use C++ even without C++ support if you are careful. C++
#       runtime support makes code size explode.
LD   = $(TRGT)gcc
#LD   = $(TRGT)g++
CP   = $(TRGT)objcopy
AS   = $(TRGT)gcc -x assembler-with-cpp
AR   = $(TRGT)ar
OD   = $(TRGT)objdump
SZ   = $(TRGT)size
HEX  = $(CP) -O ihex
BIN  = $(CP) -O binary

# ARM-specific options here
AOPT =

# THUMB-specific options here
TOPT = -mthumb -DTHUMB

# Define C warning options here
CWARN = -Wall -Wextra -Wundef -Wstrict-prototypes

# Define C++ warning options here
CPPWARN = -Wall -Wextra -Wundef

#
# Compiler settings
##############################################################################

##############################################################################
# Start of user section
#

# List all user C define here, like -D_DEBUG=1
UDEFS = -DPDBS_CONFIG_BASE=0x0800F800

# Define ASM defines here
UADEFS =

# List all user directories here
UINCDIR =

# List the user directory to look for the libraries here
ULIBDIR =

# List all user libraries here
ULIBS =

#
# End of user defines
##############################################################################

RULESPATH = $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC
include $(RULESPATH)/rules.mk

# Special rules follow

flash-openocd-stlink: $(BUILDDIR)/$(PROJECT).elf
	openocd -f interface/stlink-v2.cfg -c "transport select hla_swd" -f target/stm32f0x.cfg -c "program $(BUILDDIR)/$(PROJECT).elf verify reset exit"

GDB ?= $(TRGT)gdb

ifeq ($(BMP_PORT),)
BMP_PORT_CANDIDATES := $(wildcard \
/dev/serial/by-id/usb-Black_Sphere_Technologies_Black_Magic_Probe_*-if00 \
/dev/cu.usbmodem*1)
ifeq ($(words $(BMP_PORT_CANDIDATES)),1)
BMP_PORT := $(BMP_PORT_CANDIDATES)
else
BMP_PORT = $(error Black Magic Probe gdb serial port not found, please provide the device name via the BMP_PORT variable parameter$(if \
$(BMP_PORT_CANDIDATES), (found $(BMP_PORT_CANDIDATES))))
endif
endif

flash-bmp: $(BUILDDIR)/$(PROJECT).elf
	$(GDB) -nx --batch \
		-ex 'target extended-remote $(BMP_PORT)' \
		-ex 'monitor swdp_scan' \
		-ex 'attach 1' \
		-ex 'load' \
		-ex 'compare-sections' \
		-ex 'kill' \
		$(BUILDDIR)/$(PROJECT).elf