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a43 file with msp430-elf

Peter Gibbons
Intellectual 425 points

Hi I'm Trying to generate the a43 hex file with the msp430-elf toolchain but got with some problems.
Under Linux (without CCS) using as base the examples in "ti/gcc/examples" I barely modified the makefile adding the -T option to specify a linker script and added the command to copy the object file as an hex file

I get the hex file, but it defines the first section of flash memory starting with a bunch of zeros, and doesn't run, the debugger says that PC(0) is less than 0x10 because the first instruction 00 00 is to branch to address 0, this is the first part of the hex file I'm getting

:108000000000000000000000FFFF0000FFFF000074
:1080100031400006B240805A5C013C4006020D43EC
:108020003E401000B0123A81B0126E810C43B01283
:1080300016813440048035400480264330405E8001
:108040003440048035400480264330405E80344014
:108050000480354004803640FEFF30405E80059449

What am I doing wrong, or is something wrong with the toolchain?
Can please someone provide a set of commands to achieve this

The makefile looks like this:

OBJECTS=blink.o

GCC_DIR =  ../../../bin
SUPPORT_FILE_DIRECTORY = ../../../include

DEVICE  = msp430f157
CC      = $(GCC_DIR)/msp430-elf-gcc
GDB     = $(GCC_DIR)/msp430-elf-gdb
OBJCOPY = $(GCC_DIR)/msp430-elf-objcopy

CFLAGS = -I $(SUPPORT_FILE_DIRECTORY) -mmcu=$(DEVICE) -O2 -g
LFLAGS = -L $(SUPPORT_FILE_DIRECTORY)

all: ${OBJECTS}
	$(CC) -T msp430f157.ld $(CFLAGS) $(LFLAGS) $? -o $(DEVICE).out
	${OBJCOPY} -O ihex $(DEVICE).out blink.a43

debug: all
	$(GDB) $(DEVICE).out

and the commands that are being output are these:

msp430-elf-gcc -I ../../../include -mmcu=msp430f157 -O2 -g   -c -o blink.o blink.c
msp430-elf-gcc -T msp430f157.ld -I ../../../include -mmcu=msp430f157 -O2 -g -L ../../../include blink.o -o msp430f157.out
msp430-elf-objcopy -O ihex msp430f157.out blink.a43

  • TI__Guru**** 244300 points

    I don't understand what you are trying to accomplish.

    Peter Gibbons said:
    added the command to copy the object file as an hex file

    What documentation are you using that says you need the executable in Intel hex format?

    Thanks and regards,

    -George

  • Intellectual 425 points
    Actually the error was mine, I was working in a bootloader and the previous compiler/linker set the start of code at a different address so now I'll look to the address specified at the reset vector to start the execution of code.

    Thanks for the fast response!