makefile

AT91SAM7 SWI, Remap, GPIO, PIT and stdio Example ( Gamma )

# Hey Emacs, this is a -*- makefile -*-
#
# WinARM template makefile 
# by Martin Thomas, Kaiserslautern, Germany 
# <[e-mail]>
#
# based on the WinAVR makefile written by Eric B. Weddington, J鰎g Wunsch, et al.
# Released to the Public Domain
# Please read the make user manual!
#
#
# On command line:
#
# make all = Make software.
#
# make clean = Clean out built project files.
#
# make program = Download the hex file to the device
#
# (TODO: make filename.s = Just compile filename.c into the assembler code only)
#
# To rebuild project do "make clean" then "make all".
#
# Changelog:
# - 17. Feb. 2005  - added thumb-interwork support (mth)
# - 28. Apr. 2005  - added C++ support (mth)
# - 29. Arp. 2005  - changed handling for lst-Filename (mth)
# -  1. Nov. 2005  - exception-vector placement options (mth)
# - 15. Nov. 2005  - added library-search-path (EXTRA_LIB...) (mth)
# -  2. Dec. 2005  - fixed ihex and binary file extensions (mth)
# - 22. Feb. 2006  - added AT91LIBNOWARN setting (mth)
# - 19. Apr. 2006  - option FLASH_TOOL (default lpc21isp); variable IMGEXT (mth)
# - 23. Jun. 2006  - option USE_THUMB_MODE -> THUMB/THUMB_IW
# -  3. Aug. 2006  - added -ffunction-sections -fdata-sections to CFLAGS
#                    and --gc-sections to LDFLAGS. Only available for gcc 4 (mth)
# -  4. Aug. 2006  - pass SUBMDL-define to frontend (mth)
# - 11. Nov. 2006  - FLASH_TOOL-config, TCHAIN-config (mth)
# - 28. Mar. 2007  - remove .dep-Directory with rm -r -f and force "no error"
# - 24. Apr. 2007  - added "both" option for format (.bin and .hex)
# - 20. Aug. 2007  - extraincdirs in asflags, passing a "board"-define

# Toolchain prefix (i.e arm-elf -> arm-elf-gcc.exe)
TCHAIN = arm-elf
#TCHAIN = arm-none-eabi

#FLASH_TOOL = UVISION
FLASH_TOOL = OPENOCD

USE_THUMB_MODE = YES
#USE_THUMB_MODE = NO

# MCU name, submodel and board
MCU      = arm7tdmi
SUBMDL   = AT91SAM7S64
BOARD    = ATMEL_AT91SAM7S_EK
#SUBMDL   = AT91SAM7S256
#BOARD    = OLIMEX_SAM7_P

## not supported in this example:
## Create ROM-Image (final)
RUN_MODE=ROM_RUN
## Create RAM-Image (debugging) - not used in this example
#RUN_MODE=RAM_RUN

## Exception-Vector placement only supported for "ROM_RUN"
## (placement settings ignored when using "RAM_RUN")
## - Exception vectors in ROM:
#VECTOR_LOCATION=VECTORS_IN_ROM
## - Exception vectors in RAM:
VECTOR_LOCATION=VECTORS_IN_RAM


# Target file name (without extension).
TARGET = main

# List C source files here. (C dependencies are automatically generated.)
# use file-extension c for "c-only"-files
SRC  = $(TARGET).c
SRC += dbgu.c
SRC += syscalls.c
SRC += swi_handler_user.c
# SRC += rprintf.c
SRC += common/Cstartup_SAM7.c

# List C source files here which must be compiled in ARM-Mode.
# use file-extension c for "c-only"-files
SRCARM = 

# List C++ source files here.
# use file-extension cpp for C++-files (use extension .cpp)
CPPSRC = 

# List C++ source files here which must be compiled in ARM-Mode.
# use file-extension cpp for C++-files (use extension .cpp)
#CPPSRCARM = $(TARGET).cpp
CPPSRCARM = 

# List Assembler source files here.
# Make them always end in a capital .S.  Files ending in a lowercase .s
# will not be considered source files but generated files (assembler
# output from the compiler), and will be deleted upon "make clean"!
# Even though the DOS/Win* filesystem matches both .s and .S the same,
# it will preserve the spelling of the filenames, and gcc itself does
# care about how the name is spelled on its command-line.
ASRC = 

# List Assembler source files here which must be assembled in ARM-Mode..
ASRCARM  = common/Cstartup.S
ASRCARM += common/swi_handler.S

## Output format. (can be ihex or binary or both)
## (binary i.e. for openocd and SAM-BA, hex i.e. for lpc21isp and uVision)
#FORMAT = ihex
#FORMAT = binary
FORMAT = both

# Optimization level, can be [0, 1, 2, 3, s]. 
# 0 = turn off optimization. s = optimize for size.
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
OPT = s
#OPT = 0

# Debugging format.
# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.
# AVR (extended) COFF requires stabs, plus an avr-objcopy run.
#DEBUG = stabs
DEBUG = dwarf-2

# List any extra directories to look for include files here.
#     Each directory must be seperated by a space.
EXTRAINCDIRS = ./common

# List any extra directories to look for library files here.
#     Each directory must be seperated by a space.
EXTRA_LIBDIRS = ./common

# Path to Linker-Scripts
LINKERSCRIPTPATH = ./common

## Using the Atmel AT91_lib produces warning with
## the default warning-levels. 
## yes - disable these warnings; no - keep default settings
AT91LIBNOWARN = yes
#AT91LIBNOWARN = no


# Compiler flag to set the C Standard level.
# c89   - "ANSI" C
# gnu89 - c89 plus GCC extensions
# c99   - ISO C99 standard (not yet fully implemented)
# gnu99 - c99 plus GCC extensions
CSTANDARD = -std=gnu99

# Place -D or -U options for C here
CDEFS =  -D$(RUN_MODE)

# Place -I options here
CINCS =

# Place -D or -U options for ASM here
ADEFS =  -D$(RUN_MODE)

ifdef VECTOR_LOCATION
CDEFS += -D$(VECTOR_LOCATION)
ADEFS += -D$(VECTOR_LOCATION)
endif

CDEFS += -D__WinARM__ -D__WINARMSUBMDL_$(SUBMDL)__ -D__WINARMBOARD_$(BOARD)__
ADEFS += -D__WinARM__ -D__WINARMSUBMDL_$(SUBMDL)__ -D__WINARMBOARD_$(BOARD)__

# Compiler flags.

ifeq ($(USE_THUMB_MODE),YES)
THUMB    = -mthumb
THUMB_IW = -mthumb-interwork
else 
THUMB    = 
THUMB_IW = 
endif

#  -g*:          generate debugging information
#  -O*:          optimization level
#  -f...:        tuning, see GCC manual and avr-libc documentation
#  -Wall...:     warning level
#  -Wa,...:      tell GCC to pass this to the assembler.
#    -adhlns...: create assembler listing
#
# Flags for C and C++ (arm-elf-gcc/arm-elf-g++)
CFLAGS = -g$(DEBUG)
CFLAGS += $(CDEFS) $(CINCS)
CFLAGS += -O$(OPT)
CFLAGS += -Wall -Wcast-align -Wimplicit 
CFLAGS += -Wpointer-arith -Wswitch
CFLAGS += -ffunction-sections -fdata-sections
CFLAGS += -Wredundant-decls -Wreturn-type -Wshadow -Wunused
CFLAGS += -Wa,-adhlns=$(subst $(suffix $<),.lst,$<) 
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))

# flags only for C
CONLYFLAGS += -Wnested-externs 
CONLYFLAGS += $(CSTANDARD)

ifneq ($(AT91LIBNOWARN),yes)
#AT91-lib warnings with:
CFLAGS += -Wcast-qual
CONLYFLAGS += -Wmissing-prototypes 
CONLYFLAGS += -Wstrict-prototypes
CONLYFLAGS += -Wmissing-declarations
endif

# flags only for C++ (arm-elf-g++)
# CPPFLAGS = -fno-rtti -fno-exceptions
CPPFLAGS = 

# Assembler flags.
#  -Wa,...:    tell GCC to pass this to the assembler.
#  -ahlns:     create listing
#  -g$(DEBUG): have the assembler create line number information
ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:.S=.lst),-g$(DEBUG)
ASFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))


#Additional libraries.

# Extra libraries
#    Each library-name must be seperated by a space.
#    To add libxyz.a, libabc.a and libefsl.a: 
#    EXTRA_LIBS = xyz abc efsl
#EXTRA_LIBS = efsl
#EXTRA_LIBS = STR71Xlibstd
EXTRA_LIBS =

#Support for newlibc-lpc (file: libnewlibc-lpc.a)
#NEWLIBLPC = -lnewlib-lpc

MATH_LIB = -lm

# CPLUSPLUS_LIB = -lstdc++


# Linker flags.
#  -Wl,...:     tell GCC to pass this to linker.
#    -Map:      create map file
#    --cref:    add cross reference to  map file
LDFLAGS = -nostartfiles -Wl,-Map=$(TARGET).map,--cref,--gc-sections
LDFLAGS += -lc
LDFLAGS += $(NEWLIBLPC) $(MATH_LIB)
LDFLAGS += -lc -lgcc 
LDFLAGS += $(CPLUSPLUS_LIB)
LDFLAGS += $(patsubst %,-L%,$(EXTRA_LIBDIRS))
LDFLAGS += $(patsubst %,-l%,$(EXTRA_LIBS))

# Set Linker-Script Depending On Selected Memory and Controller
ifeq ($(RUN_MODE),RAM_RUN)
LDFLAGS +=-T$(LINKERSCRIPTPATH)/$(SUBMDL)-RAM.ld
else 
LDFLAGS +=-T$(LINKERSCRIPTPATH)/$(SUBMDL)-ROM.ld
endif

# ---------------------------------------------------------------------------
# Flash-Programming support using lpc21isp by Martin Maurer 
# only for Philips LPC and Analog ADuC ARMs
#
# Settings and variables:
#LPC21ISP = lpc21isp
LPC21ISP = lpc21isp
LPC21ISP_PORT = com1
LPC21ISP_BAUD = 38400
LPC21ISP_XTAL = 12000
# other options:
# * verbose output: -debug
# * enter bootloader via RS232 DTR/RTS (only if hardware supports this
#   feature - see Philips AppNote): -control
LPC21ISP_OPTIONS = -control
#LPC21ISP_OPTIONS += -debug