makefile

UART developing tutorial module with source codes a褌胁 hints.

# *******************************************************************************************************
#       Makefile for Atmel AT91SAM7X256 - flash execution
#  
#  
#  Description of Compiler Flags (CFLAGS) 
#		-mcpu=arm7tdmi 				identifies the target ARM microprocessor
#		-I./						search current working directory for include files  
#  		-c							do not invoke the linker
#  		-fno-common					compiler gives each global variable space in .data segment
#  		-O0							set lowest otimization level (best for debugging)
#		-g							include debugging information in output file
#		-fomit-frame-pointer		don't store frame pointer for functions that don't need it
#		-Wcast-align 				emit warning if casting pointer causes alignment problems
#
#       -MD							emits a one-line file such as main.d file with dependency line like this:   
#									    main.o:      main.c at91sam7x256.h board.h
#									note: use -MD once to get your dependency lines set up - then remove.
#
#  
#  Description of Assembler Flags (ASFLAGS) 
#		-mapcs-32					select apcs-32 ARM procedure calling convention		  
#		-g							include debugging information in output file
#  
#  
#  Description of Linker flags (LFLAGS)  
#		-omain.out					set the output filename to "main.out"  
#		-Tdemo_sam7ex256_dma.cmd	identifies the linker script file 
#		-Map main.map				create a map file with the name "main.map"  
#		--cref						add cross reference table to the map file  
#  
#  
#  Description of ObjCopy flags (CPFLAGS)  
#		--output-target=binary		convert main.out to a binary file (main.bin) 		  
#  
#  
#  Description of ObjDump flags (ODFLAGS)  
#		-x							display header information, symbol table etc.
#		--syms						display the symbol table  
#  
#  
#     James P Lynch  June 22, 2008
# *******************************************************************************************************
NAME = demo_sam7ex256_dma

# variables 
CC	= arm-elf-gcc
AS	= arm-elf-as
LD	= arm-elf-ld -v
CP	= arm-elf-objcopy
OD	= arm-elf-objdump

CFLAGS  = -mcpu=arm7tdmi -I./ -c -fno-common -O0 -g -fomit-frame-pointer -Wcast-align
ASFLAGS  = -mapcs-32 -g
LFLAGS  =  -omain.out -Tdemo_sam7ex256_dma.cmd -Map main.map --cref
CPFLAGS = --output-target=binary
ODFLAGS	= -x --syms

OBJECTS =	crt.o \
			main.o \
			lowlevelinit.o \
			usart0_setup.o \
			usart0_isr.o \
			isrsupport.o

# ALL - make target called by Eclipse  (Project -> Build Project)
all: main.out
	@ echo "...create binary file"
	$(CP) $(CPFLAGS) main.out main.bin
	@ echo "...create dump file"
	$(OD) $(ODFLAGS) main.out > main.dmp

main.out: $(OBJECTS) 
	@ echo "...linking"
	$(LD) $(LFLAGS) -omain.out $(OBJECTS) libgcc.a 

# list of dependencies for each C and ASM file in the project
# Note:  Implicit Rules will deduce from the source file extension which to run: C compiler or ARM assembler
crt.o:              crt.s
main.o:             main.c at91sam7x256.h board.h
lowlevelinit.o:     lowlevelinit.c at91sam7x256.h Board.h
usart0_setup.o:     usart0_setup.c at91sam7x256.h board.h
usart0_isr.o:       usart0_isr.c at91sam7x256.h board.h
isrsupport.o:       isrsupport.c


# CLEAN - make target called by Eclipse (Project -> Clean ...)
clean:
	-rm $(OBJECTS) main.out main.bin main.map main.dmp





	

# **********************************************************************************************
#                            FLASH PROGRAMMING                                         
#
# Alternate make target for flash programming only
#
# You must create a special Eclipse make target (program) to run this part of the makefile 
# (Project -> Create Make Target...  then set the Target Name and Make Target to "program")
#
# OpenOCD is run in "batch" mode with a special configuration file and a script file containing
# the flash commands. When flash programming completes, OpenOCD terminates.
#
# Note that the script file of flash commands (script.ocd) is part of the project
#
# Programmers: Martin Thomas, Joseph M Dupre, James P Lynch
# **********************************************************************************************

# specify output filename here (must be *.bin file)
TARGET = main.bin

# specify the directory where openocd executable reside
OPENOCD_DIR = 'c:/Program Files/openocd-r717/bin/'

# specify OpenOCD executable (pp is for the wiggler, ftd2xx is for the USB debuggers)
#OPENOCD = $(OPENOCD_DIR)openocd-pp.exe
OPENOCD = $(OPENOCD_DIR)openocd-ftd2xx.exe

# specify OpenOCD configuration file (in your project folder)
OPENOCD_CFG = openocd_program.cfg


# program the AT91SAM7S256 internal flash memory
program: $(TARGET)
	@echo "Flash Programming with OpenOCD..."		# display a message on the console
	$(OPENOCD) -s $(OPENOCD_DIR) -f $(OPENOCD_CFG)	# program the onchip FLASH here
	@echo "Flash Programming Finished."				# display a message on the console