Difference between revisions of "Beremiz"

Revision as of 13:29, 2 August 2013

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Introduction

Beremiz is free software toolkit for automation. It's conform with IEC61131 languages and can drive graphicaly your system.

Beremiz is divided in two softwares:

• Beremiz.py: The Graphical toolkit that run on the Host to drive the target.
• Beremiz_service.py: The target runtime that execute the code compiled by Beremiz.py and sent throught network to its.

Then there are two triky things to do to use beremiz on APF* platforms :

• Configure Beremiz.py to cross-compile binary for ARM
• Run python program Beremiz_service.py on apf.

Installation

Host

Host part of beremiz is included under armadeus :

make menuconfig

Then select :

Package Selection for the target  --->
    Development tools  --->
        [*] matiec 
    ...
    Graphic libraries and applications (graphic/text)  --->
        [*] beremiz framework 

Then :

make

To launch beremiz type :

python buildroot/output/build/host-beremiz-358db9d64aa1/Beremiz.py 

To see how to install Beremiz on your host, please see the official website (How to build with Linux).

Target

APF28

Python 2.7 and Pyro are required to run Beremiz_service.py.

install python 2.7

run

make menuconfig

On up to date armadeus trunk view, then select :

Package Selection for the target  --->
    Interpreter languages and scripting  --->
        [*] python
            python module format to install (.py sources only)  --->
                          (X) .py sources only

then make :

$ make

Install Pyro3.14

Pyro 3.14 is included under armadeus distribution :

make menuconfig

Package Selection for the target  --->
    Interpreter languages and scripting  --->
        external python modules  --->
            [*] python-pyro

Install Beremiz_service.py

Beremiz_service is included in Armadeus distribution (trunk) :

Package Selection for the target  --->
    Graphic libraries and applications (graphic/text)  --->
        [*] Beremiz --->

Simple usage

Target connection

• When Beremiz.py is launched on your Host, create or open a project then save it.
• With your favorite editor edit the file beremiz.xml then change the URI line:

<BeremizRoot URI_location="PYRO://192.168.0.33:3000">

Replace 192.168.0.33 by the IP of your APF28.

• Re-open your project then clic on «connect» icon.
• You can compile your project and try to send it...
• ... but you will have this error :

PLCobject : OFF LOG :NewPLC (d8ad51386680f2337309dc55eddb4383)
python: '/mnt/nfs/beremiz/d8ad51386680f2337309dc55eddb4383.so' is not an ELF executable for ARM
PLCobject : Traceback (most recent call last):
  File "/mnt/nfs/beremiz/runtime/PLCObject.py", line 135, in LoadPLC
    self._PLClibraryHandle = dlopen(self._GetLibFileName())
OSError: File not found

• Because the defaut compliler for Beremiz.py is not for arm ...

• To configure your compiler, go to project configuration (double clic on head of hierarchy) and adding the path of your compiled armgcc :

YOUR_ARMADEUS_PATH/buildroot/output/host/usr/bin/arm-buildroot-linux-uclibcgnueabi-gcc

for linker and compiler.

• You can then compile and transfert the program to target...
• ... but there still an error :

PLCobject : OFF LOG :NewPLC (d8ad51386680f2337309dc55eddb4383)
python: '/mnt/nfs/beremiz/d8ad51386680f2337309dc55eddb4383.so' is not an ELF executable for ARM
PLCobject : Traceback (most recent call last):
  File "/mnt/nfs/beremiz/runtime/PLCObject.py", line 135, in LoadPLC
    self._PLClibraryHandle = dlopen(self._GetLibFileName())
OSError: File not found

• This can be fixed by changing code in beremiz beremiz/targets/Linux/plc_Linux_main.c :

/*
long long AtomicCompareExchange64(long long* atomicvar, long long compared, long long exchange)
{
    return __sync_val_compare_and_swap(atomicvar, compared, exchange);
}
*/
static pthread_mutex_t cs_mutex = PTHREAD_MUTEX_INITIALIZER;
long long AtomicCompareExchange64(long long* atomicvar, long long compared, long long exchange)
{
    long long res;

    pthread_mutex_lock(&cs_mutex);
    res=*atomicvar;
    if(*atomicvar == compared){
        *atomicvar = exchange;
    }
    pthread_mutex_unlock(&cs_mutex);
    return res;
}

Links

• Home page of project.