uros-petrevski-2:bin uros$ ./scripts/feeds install mosquitto-nossl

This will install version that don’t support ssl layer because we don’t need it. We need server that is fast. Run make menuconfig and under Network select mosquitto nossl as M package.

uros-petrevski-2:bin uros$ make J=4

Then copy mosquitto package to weio. Mosquitto don’t have any dependencies.

uros-petrevski-2:packages uros$ scp /Volumes/openwrt/carambola/bin/ramips/packages/mosquitto-nossl_1.0.3-1_ramips.ipk root@weio.local:/tmp

Now it’s time to install mosquitto

root@Weio:/tmp# opkg install mosquitto-nossl_1.0.3-1_ramips.ipk -d root

If you run mosquitto now it will break :

root@Weio:/tmp# mosquitto

11145: Error: Invalid user 'mosquitto'.

The reason is simple, user is not configured. As user is root we have to declare root user un mosquitto configuration. So edit /etc/mosquitto/mosquitto.conf file and add at user section

user root

If you want to run manually mosquitto (you can see what is happening with clients on the console) you have to do :

root@Weio:/# mosquitto -c /etc/mosquitto/mosquitto.conf

Parameter -c specify path to conf file. However if you want to run automaticaly on startup mosquitto server do following

root@Weio:/# /etc/init.d/mosquitto enable

Once system rebooted you can see mosquitto server running by :

root@Weio:/# ps | grep mosquitto

2570 root       932 S    /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf

2574 root      1488 S    grep mosquitto

#src/gz snapshots http://pkg.8devices.com/v2.3/carambola/packages

src/gz barrier_breaker http://downloads.openwrt.org/snapshots/trunk/ramips/packages

dest root /

dest ram /tmp

dest usb /mnt/usb

lists_dir ext /var/opkg-lists

option overlay_root /overlay

Than call to install mDNSresponder :

root@Weio:~# opkg install mdnsresponder -d root

Opkg installed mdnsresponder, mdnsd and mdns-utils. Now it’s time to setup /etc/mDNSResponder.conf file. For example to attribute name weio.local for ssh sessions conf file should look like this :

"weio"

_ssh._tcp. local

22

weio SSH server

To get descent explication of what each line describes in this file check this site https://dev.openwrt.org/browser/packages/libs/howl/files/mDNSResponder.conf

Then you have to enable mDNS service on the startup.

root@Weio:~# /etc/init.d/mDNSResponder enable

Each time when you connect to another network and your ip changes you have to restart responder

root@Weio:~# /etc/init.d/mDNSResponder start

From ssh now you can call your WEIO board :

uros-petrevski-2:~ uros$ ssh root@weio.local

mkfs.ext2 /dev/sda1

easy_install -m twitter

rm -rf /mnt/store/usr/lib/python2.7/site-packages/twitter-1.9.0-py2.7.egg

Parameter -r for rm is used because sometimes EGG is a directory

WEIO base system is not minimalistic, it has some additional packages :

This is a list if all installed packages in weioBase

nano, usb support, ext2 fs support, iwinfo, whereis, i2c-tools, wget, ntpd and some other small handful tools

These are kernel modules installed to support usb storage :

kmod-fs-autofs4 – 3.3.8-1
kmod-scsi-core – 3.3.8-1
kmod-usb-core – 3.3.8-1
kmod-usb-rt305x-dwc_otg – 3.3.8-1
kmod-usb-storage – 3.3.8-1
kmod-usb-storage-extras – 3.3.8-1

and tools :

block-mount – 0.2.0-9
cfdisk – 2.21.2-1
e2fsprogs – 1.42.4-1
fdisk – 2.21.2-1

However it’s really important to activate EXT2_FS in the kernel directely. You can do it by adding it directely in crosscompilation tool :

make kernel_menuconfig

Then choose “Second extended fs support”, and everything that is listed. Juste like on this screenshoot

This gude will present installation of base system, formating external USB flash, installing python 2.7 on it, setting up environement, installing easy_install, installing components like tornado and sockJS

SSH to weio board and then :

go to RAM where there are plenty of free space to download new firmware

root@Weio:/tmp# cd /tmp

root@Weio:/tmp# wget http://www.nodesignlab.net/Telechargements/weioBase.bin

root@Weio:/tmp# sysupgrade -c -v weioBase.bin

to save configuration files and to restart system

sysprgrade -v -n

makes clean install destroying everything

Plug into USB flash device, it will be enumerated under something like /dev/sda1

Format it in ext2 format

root@Weio:/# mkfs.ext2 /dev/sda1

Disk is formatted. Mount it somewhere

root@Weio:/# mkdir /mnt/store

root@Weio:/# mount /dev/sda1 /mnt/store/

Python packets must be compiled before with <M> parameter (indipendent from FW) than copied to the usb flash. Hopefully we have binary packages on our server. As there are almost no place left on flash we have to say to opkg to install python on the usb flash. New destination must be specified in /etc/opkg.conf file like this :

dest root /

/dest ram /tmp

dest usb /mnt/store

We added usb destination here.

Now download python2.7 build and decompress it on the usb flash

root@Weio:/mnt/store/# mkdir temp

root@Weio:/mnt/store/# cd temp

root@Weio:/mnt/store/temp# wget http://www.nodesignlab.net/Telechargements/python27.tar

root@Weio:/mnt/store/temp# tar -xvf python27.tar

Then you have to use opkg to install python with specifying a usb as a destination. Don’t do automatic selection for installation like : opkg install -d usb *.ipk it will not work! Python needs to be installed in good order. First install python and python-mini package together, than all others one by one

root@Weio:/mnt/store/temp# opkg install python_2.7.3-2_ramips.ipk python-mini_2.7.3-2_ramips.ipk -d usb

Test if python is working :

root@Weio:/mnt/store/temp# /mnt/store/usr/bin/python

Now python is running. However we have to add to the path this directory

export PATH=$PATH:/mnt/store/usr/bin/

In this directory will be installed all new things that has -d usb parameter during installation by opkg.

One of the most important tools for python is packet manager easy_install pip. But in order to correctly install and use easy_install you have to update date and clock on your weio board. Weio board don’t have RTC module that keeps time using battery. That means that at every launch weio will connect time server and get the fresh date. In order to use this feature it’s necessary to have ntpdclient. Hopefully this package is aleready embedded in weioBase system and it works. Check tour time by typping date. However you can check and correct your timezone in file /etc/config/system. Find timezone strings at this link http://wiki.openwrt.org/doc/uci/system

Now it’s time to get working easy_install. Download it from our server.

root@Weio:/mnt/store/temp# wget http://www.nodesignlab.net/Telechargements/setuptools-0.6c11-py2.7.egg

root@Weio:/mnt/store/temp# chmod +x setuptools-0.6c11-py2.7.egg

root@Weio:/mnt/store/temp# ./setuptools-0.6c11-py2.7.egg

Now we have easy_install ready to be used.

Now it’s time to install pip packet manager for python. On this site (at the end of page) is described a procedure of installing pip http://www.pip-installer.org/en/latest/installing.html on posix machines. This is procedure with minor differencies for weio platform :

If curl is not present in your system you have to install it. Curl is needed to access https sites.

root@Weio:/mnt/usb/temp# opkg install curl -d root

There are two methods of installing pip, by automatic script get-pip.py or manually downloading sources and running setup.py. This method is using get-pip.py automatic script method :

root@Weio:/mnt/usb/temp# curl -O -k https://raw.github.com/pypa/pip/master/contrib/get-pip.py

Curl needs -k parameter to turn off curl’s verification of the certificate because he will not be able to verify it.

root@Weio:/mnt/usb/temp# python get-pip.py

After really long time pip will be installed. It’s installation is about 6-7minutes long.

Let’s install Tornado now.

root@Weio:/mnt/usb/temp# pip install tornado

Finally pip is pretty much slower than easy_install in installing packages but easy_install is old techno that will not be suportted any more and pip has much more options specially uninstall command and traceback of all installed packages.

Now pip packet manager will find the latest stable release of Tornado, download it, run setup.py and install it. You don’t have to specify destination because pip will install all new packages alongside python install that means in our case on usb flash. Python is lucky solution for installing additional modules but if some other programs are installed on the usb flash they always need somme modification that they can work. Sometimes it’s not enough to add it to the path, it’s possible that you need to make links from root fs to flash usb. That’s the reason why we only want to externalize python and to install all other programs inside root fs.

Some of packages that weio needs don’t exists in pip repositories so we need to install them manually. That’s the case with sockjs-tornado package. First install git than using it clone sockjs project on usb flash then install it. We don’t keep git inside our base OS because we judge that git use is for advanced users. We will include it maybe later. At the same time git is huge. Maybe we will find some simple workaround to install it on usb flash in the future.

root@Weio:/mnt/store/temp# wget http://www.nodesignlab.net/Telechargements/git_1.7.11.2-1_ramips.ipk

root@Weio:/mnt/store/temp# opkg install git_1.7.11.2-1_ramips.ipk -d root

root@Weio:/mnt/store/temp# git clone git://github.com/mrjoes/sockjs-tornado.git

root@Weio:/mnt/store/temp# cd sockjs-tornado

root@Weio:/mnt/store/temp/sockjs-tornado# python setup.py install

sudo kextunload /System/Library/Extensions/FTDIUSBSerialDriver.kext

to bring back

sudo kextload /System/Library/Extensions/FTDIUSBSerialDriver.kext

http://balau82.wordpress.com/2010/12/16/using-newlib-in-arm-bare-metal-programs/