Surströmming in Sundsvall

Truly unique Swedish experience in Sundsvall…

  • Surströmming can

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Changes, changes…

After years, significants changes on the site:

  • New domain! Finally, I managed to get my personal domain http://jhartman.pl hence I’m not tied to webd.pl
  • It turned out that it’s easier to migrate my old Drupal 6 to WordPress rather than to Drupal 8. Therefore I’m now on the new engine and so far I’m pretty happy
  • Attempted to AdSense, however Google is pretty picky and I’m not really sure if I will get approval

Curriculum Vitae

Country Location

Poland, Warsaw

Summary

Jarek (Jarosław) Hartman is a Solution Architect who joined Oracle in July 2010.

He is a member of the EMEA Architects Community within the Communications Global Business Unit (CGBU).

Jarek has more than 15 years of experience in the Telecommunication industry, with 9  years of technical management experience in the implementation of Intelligent Networking and Online Charging systems.

Over the years, he worked with a large variety of clients in different countries, and successfully delivered projects across the region. During this process Jarek acquired a full life cycle experience in overall technical project scoping, planning, requirements gathering, solution architecture design, staging, configuration, testing, performance testing, tuning, deployment, network integration, migration and go-live of software for the Telecommunication industry.

Key strengths include: analytical and troubleshooting skills; strong performance both individually as in a team; self-motivated and disciplined; open and eager to learn about new technologies, paradigms and developments and open for travel.

Jarek holds a Masters degree in Electronics and Telecommunications from the Technical University of Wroclaw, Poland (2002), and speaks Polish and English.

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ASN.1 encoding tutorial

Introduction

Recently I in my work I had to encode an Inap (to be more precise – Sinap) content “by hand”. It’s not a rocket science however when you need to repeat this action several times it’s worth to prepare an “automatic” solution.

Input data

As an imput I have description of Furnish Charging Information in ASN.1:

FurnishChargingInformation ::= OPERATION 
   ARGUMENT FurnishChargingInformationArg 
   ERRORS {MissingParameter , 
                 TaskRefused , 
                 UnexpectedComponentSequence , 
                 UnexpectedDataValue , 
                 UnexpectedParameter } 
FurnishChargingInformationArg ::= FCIBillingChargingCharacteristics
FCIBillingChargingCharacteristics ::= OCTET STRING (SIZE (minFCIBillingChargingLen..maxFCIBillingChargingLen))

Ok, how to read it? (S)INAP message FurnishChargingInformation has an argument FurnishChargingInformationArg which is eqal to FCIBillingChargingCharacteristics. FCIBillingChargingCharacteristics is a limited size octet string.

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Withings to Garmin Connect

Since a while I’m owning great Withings Scale which has a capability to store measurements in a cloud. Because I’m using Garmin GPSes (and Garmin Connect), I’d love to synchronize the measurements to the Garmin Connect site.

Lucky, I found a great script garmin-withings.

Unfortunately, after latest changes in the Garmin Connect (implementation of SSO on march 2014) the script stopped to work. I’ve compiled changes proposed by https://github.com/cpfair/tapiriik and it seems that the script with my updates works again (well, at least until further changes in Garmin Connect…)

You can find the script on https://github.com/jaroslawhartman/withings-garmin-v2

ToDo

Garmin Connect can display a lot of other parameters, not only weight and body fat level:

Measurements

It would be great to calculate all these figures and post them to Garmin Connect, right? 🙂

How to disable and remove usbecm2 device from Solaris 11 server

After fresh installation of T4-1 server, I’ve noticed a network interface which I didn’t expect – the usbecm2:

root@slc:/# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
net0: flags=100001000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,PHYSRUNNING> mtu 1500 index 7
        inet 139.156.7.116 netmask ffffff00 broadcast 139.156.7.255
        ether 0:10:e0:9a:2e:6
usbecm2: flags=100001000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,PHYSRUNNING> mtu 1500 index 14
        inet 169.254.182.77 netmask ffffff00 broadcast 169.254.182.255
        ether 2:21:28:57:47:17
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
        inet6 ::1/128
net0: flags=120002000840<RUNNING,MULTICAST,IPv6,PHYSRUNNING> mtu 1500 index 7
        inet6 ::/0
        ether 0:10:e0:9a:2e:6
usbecm2: flags=120002000840<RUNNING,MULTICAST,IPv6,PHYSRUNNING> mtu 1500 index 14
        inet6 ::/0
        ether 2:21:28:57:47:17

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