Skip to content

MSP430X

Jump to bottom Edit New page
Henry-Joseph Audéoud edited this page Feb 12, 2016 · 5 revisions

Table of Contents

MSP430X

The basic MSP430 cannot support more memory (ROM + RAM + peripherals) than its 64K address space. In order to support this, an extended form of the MSP430 uses 20-bit registers and a 20-bit address space, allowing up to 1 MB of memory. Platforms such as, WiSMote are based on MSP430X series CPU, and support more memory than 64K. Unfortunately, current stable release of GCC does not support MSP430X series CPUs. There is an experimental version of GCC that can be used.

The instructions to install the experimental GCC version are shown below. This version will be installed to "/opt/mspgccx". In addition, you also need some modifications in Cooja and to platform specific make file of wismote (contiki/platform/wismote/Makefile.wismote).

  • You can check the current version of your msp430-gcc via:
msp430-gcc --version
msp430-gcc (GCC) 4.6.3 20120301 (mspgcc LTS 20120406 unpatched)
  • After following the instructions of this page you should get this output:
msp430-gcc --version
msp430-gcc (GCC) 4.7.0 20120322 (mspgcc dev 20120911)
  • NOTE: You might want to use two different compilers during code development, the stable release 4.6.3 and the experimental version 4.7.0. Therefore it makes sense to add the following line to your bash_rc or bash_profile. I am aware of the fact that this introduces a point of failure, but I couldn't come up with an automated way so far. You can just point to the compiler you want to use:
# msp430-gcc (GCC) 4.6.3
# export PATH=/usr/bin/msp430-gcc/bin:$PATH
# msp430-gcc (GCC) 4.7.0
export PATH=/opt/mspgccx/bin:$PATH

NOTE: The following instructions are based on an email from Aragosystems, the manufacturer of the WiSMote platform.

Updated MSPSim for Cooja

Visit here and download the latest source and compile it: 

git clone git://mspsim.git.sourceforge.net/gitroot/mspsim/mspsim 
cd mspsim
ant jar
Copy mspsim.jar to contiki/tools/mspsim/ 
cd contiki/tools/cooja && ant clean && ant jar

Instructions for compiling mspgcc 4.7.0

The following simple script performs the building the new compiler and you should use it at your own risk. You should better understand what it does and you should be very patient (~30min), if your system is not the fastest one like mine. 

#! /bin/sh
#################################################################
# This script compiles the msp43-gcc 4.7.0                      #
# The instructions are based on an email from Aragosystems, the # 
# manufacturer of the WiSMote platform. It has been tested on   # 
# Ubuntu 12 and MAC OS 10.6.                                    #
# The running time of this script is depending on your system   #
# and it can take about 30 minutes.                             #
#                                                               #
# NOTE ON RECENT PLATFORMS: Using recent compiler (e.g. gcc-5.3)#
# or recent versions of texinfo (e.g. texinfo-6.0) with this    #
# script seems to be non-working. It has been tested with       #
# gcc-4.6.4 and texinfo-4.13.                                   #
#                                                               #
# IMPORTANT: This script is very simple and requires you        #
# understanding it and modifying it according to your needs.    #
#                                                               #
# IMPORTANT: The ouput file for the new compiler is defined in  #
# INSTALL_PREFIX and it set to /opt/mspgccx in this script. You # 
# can later move this dicrectory. However, you MUST create this #
# directory before starting the script, e.g.:                   #
# $ mkdir ~/mspgccx && mv ~/mspgccx /opt/                       #
#                                                               #
# IMPORTANT: Your system might require root priviliege for      # 
# modifying the defined installion directory, e.g. if is in     #
# /opt/ make sure INSTALL_PREFIX has the correct access rights. #   
#                                                               #
# IMPORTANT: This script creates a tempral directory tmp in     #
# the current path, remeber to remove it afterwarts.            #
#                                                               #
# Author:                                                       #
#         Hossein Shafagh ([email protected])      #
# Created: Nov. 19 2012                                         #
#################################################################

INSTALL_PREFIX="/tmp/mspgccx"
echo The installatoin prefix:$INSTALL_PREFIX
# Switch to the tmp directory
mkdir tmp 
cd tmp

# Getting
wget http://sourceforge.net/projects/mspgcc/files/mspgcc/DEVEL-4.7.x/mspgcc-20120911.tar.bz2
wget http://sourceforge.net/projects/mspgcc/files/msp430mcu/msp430mcu-20120716.tar.bz2
wget http://sourceforge.net/projects/mspgcc/files/msp430-libc/msp430-libc-20120716.tar.bz2
wget http://sourceforge.net/p/mspgcc/bugs/352/attachment/0001-SF-352-Bad-code-generated-pushing-a20-from-stack.patch
wget http://sourceforge.net/p/mspgcc/bugs/_discuss/thread/fd929b9e/db43/attachment/0001-SF-357-Shift-operations-may-produce-incorrect-result.patch
wget http://ftpmirror.gnu.org/binutils/binutils-2.22.tar.bz2
wget http://mirror.ibcp.fr/pub/gnu/gcc/gcc-4.7.0/gcc-4.7.0.tar.bz2

# Unpacking the tars 
tar xvfj binutils-2.22.tar.bz2
tar xvfj gcc-4.7.0.tar.bz2
tar xvfj mspgcc-20120911.tar.bz2
tar xvfj msp430mcu-20120716.tar.bz2
tar xvfj msp430-libc-20120716.tar.bz2 

# 1) Incorporating the changes contained in the patch delievered in mspgcc-20120911
cd binutils-2.22
patch -p1<../mspgcc-20120911/msp430-binutils-2.22-20120911.patch
cd ..

# 2) Incorporating the changes contained in the patch delievered in mspgcc-20120911
cd gcc-4.7.0
patch -p1<../mspgcc-20120911/msp430-gcc-4.7.0-20120911.patch
patch -p1<../0001-SF-352-Bad-code-generated-pushing-a20-from-stack.patch
patch -p1<../0001-SF-357-Shift-operations-may-produce-incorrect-result.patch
cd ..

# 3) Creating new directories
mkdir binutils-2.22-msp430
mkdir gcc-4.7.0-msp430

# 4) installing binutils in INSTALL_PREFIX
cd binutils-2.22-msp430/
../binutils-2.22/configure --target=msp430 --program-prefix="msp430-" --prefix=$INSTALL_PREFIX
make
make install

# 5) Download the prerequisites
cd ../gcc-4.7.0
./contrib/download_prerequisites

# 6) compiling gcc-4.7.0 in INSTALL_PREFIX
cd ../gcc-4.7.0-msp430
../gcc-4.7.0/configure --target=msp430 --enable-languages=c --program-prefix="msp430-" --prefix=$INSTALL_PREFIX
make
make install

# 7) compiping msp430mcu in INSTALL_PREFIX
cd ../msp430mcu-20120716
MSP430MCU_ROOT=`pwd` ./scripts/install.sh ${INSTALL_PREFIX}/

# 8) compiling the msp430 lib in INSTALL_PREFIX
cd ../msp430-libc-20120716
cd src
PATH=${INSTALL_PREFIX}/bin:$PATH
make
make PREFIX=$INSTALL_PREFIX install

# cleanup
# no need since every thing created in tmp
echo Reminder: remove tmp

Modifications for contiki/platform/wismote/Makefile.wismote

Please note that the commit 3d64b80 takes care of the following modifications by introducing a new variable CPU_HAS_MSP430X. You should not apply the patch below if your version of contiki includes content of that commit. 

--- a/platform/wismote/Makefile.wismote
+++ b/platform/wismote/Makefile.wismote
@@ -36,6 +36,17 @@ include $(CONTIKI)/cpu/msp430/Makefile.msp430
 ifdef IAR
 LDFLAGSNO += -B -xm "$(IAR_PATH)/lib/dlib/dl430xsfn.r43" -f "$(IAR_PATH)/config/lnk430f5437.xcl" -l contiki-$(TARGET).map -s __program_start -D_STACK_SIZE=80 -D_DATA16_HEAP_SIZE=80 -D_DATA20_HEAP_SIZE=80
 LDFLAGS += $(LDFLAGSNO) -Felf -yn
+else # IAR
+
+ifndef MSPGCC_VERSION
+  MSPGCC_VERSION := ${shell $(CC) -dumpversion}
+endif
+
+ifneq (,$(findstring 4.7.,$(MSPGCC_VERSION)))
+# 20 bits flags for compilation (supported from mspgcc 4.7.0)
+  CFLAGS += -mmemory-model=large -mcode-region=far -mdata-region=far -msr20 -mc20 -md20
+  LDFLAGS += -mmemory-model=large -mcode-region=far -mdata-region=far -msr20 -mc20 -md20
+endif
 endif
 
 contiki-$(TARGET).a: ${addprefix $(OBJECTDIR)/,symbols.o}
Add a custom footer
Clone this wiki locally