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radius server in debug mode make sure that no freeradius daemon already running in the background before starting the server freeradius x or ld_preload usr lib libperl so 5 14 usr sbin freeradius x ubuntu 12 04 bug now test plaintext password authentication for user 2 as below radtest user2 abc 123 127 0 0 1 0 testing123 sending access request of id 203 to 127 0 0 1 port 1812 user name user2 user password abc 123 nas ip address 127 0 1 1 nas port 0 rad_recv access accept packet from host 127 0 0 1 port 1812 id 203 length 20 now test challenge authentication for user 1 as below radtest user1 doesntmatter 127 0 0 1 0 testing123 sending access request of id 33 to 127 0 0 1 port 1812 user name user1 user password doesntmatter nas ip address 127 0 1 1 nas port 0 rad_recv access challenge packet from host 127 0 0 1 port 1812 id 33 length 60 reply message enter pin number state 0x736f6d6520727461746524636f66652068657265 please note that we are doing this testing using localhost 127 0 0 1 and the nas ip address should point to the radius server ip address for remote radius server please refer to the wiki page of freeradius for configuration details of freeradius 3 x or higher references http wiki freeradius org modules rlm_perl comments 0 tags freeradius challenge authentication networking operators radius server rlm_perl script users htc one 2013 personal review got a feel of the brand new unlocked phone from htc this year and felt like sharing my thoughts here the first thing i liked about the phone is its looks and how it felt on my hand the phone comes in a zero gap perfect metal case with all the buttons neatly tucked in giving it a seamless appearance and soothing feel to the palms htc have got it right with the phone dimensions and it is very comfortable to operate the phone on one hand the phone s curvy back felt a bit odd when i first held the phone but i think we will get used to this shape and might start feeling better as days go by the power button is moved to top which i think is a good idea as i always ended up squeezing the power button while adjusting volume on other android phones the power button also doubles up as an infrared port which can be used for remote control i didn t quite like the roughness of the scales on the volume adjust button on the right as it was not a good feeling on my fingers while adjusting volume apart from that htc one deserves a top rating on the form factor and the tactile side of the body of the phone htc one powered by the android operating system delivers all the goodness of android along with a few custom specialties the htc blinkfeed is a gift for users to read news feeds and social network updates from the home screen the blinkfeed could well have been inspired by live tiles of the windows platform but certainly looks a lot more cleaner and efficient in terms of home screen real estate utilization htc one has also embraced google now which is like the siri of the apple world and it can be easily accessed by long pressing the home button google now can be handy outdoors getting you the right information at the right time the video highlights feature lets you instantly create a short mash up movie from your existing images and videos in the gallery htc one also shines on the entertainment factor with 468 ppi the htc one display screen is easily the best i have seen on smart phones so far and watching high definition video on this high resolution screen is a bliss to our visual senses the camera is a 4mp ultrapixel camera which i would have preferred to be at least 8mp but the camera comes with a lot of valuable features like the htc zoe and slow motion recording htc zoe captures a series of images continuously for 3 seconds which can be later edited using the inbuilt photo editor the photo editor presents a gamut of picture editing options and features that enable you to edit and retouch your photos on the phone without the need for an external application the gallery also has the preview feature that plays videos and zoe captures one by one within the small frames of the gallery screen another interesting aspect of the phone is its speakers and the htc boomsound with beats audio enabled one can actually feel the energy of the dual front facing stereo speakers powering away the sound waves towards you again a top rating for the display and the speakers one thing i found a little annoying is that one couldn t access the frequently used functions such as wifi screen rotate gps etc by a drag down of the status bar or notification panel on the home screen just as i thought we need to go to settings every time i realized that you can add these shortcuts as widget on one of your home screens i was also wondering how to access the recently accessed applications but later found out that one simply has to double tap the home button to access the multitasking screen and close those apps which we don t want to be running in the background while the phone has that sleek looks and sophisticated software elements i have my doubts over the phone heating up pretty quickly which you could feel on your palms while working with the phone over an extended period of time i wonder if it is because of the metal casing that the heat gets to your hands sooner than expected overall htc one is a brilliant phone with all the hardwork put in by htc and it will certainly satisfy an average smartphone user any day comments 0 tags gadgets htc i 2013 htc one boomsound beats audio htc one close running background apps htc one gallery preview htc one google now htc one heating problem htc one multitasking htc1 2013 tutorial to continuously measure the bluetooth rssi of a connected android device java bluetooth rssi nexus7 nokia xpress music at the time of this writing there is no android api available to continuously retrieve the rssi of an existing bluetooth connection even though api exists for getting wifi rssi the current api will get the bluetooth rssi only during the initial connection setup process in this article we will find out how to continuously get the bluetooth rssi of an android device and a nokia mobile phone from a computer running linux the rssi of any device connected to the computer can be determined by using the hcitool in linux but this may not be possible with commercial android devices as root access is required in order to call any functions from the bluetooth hci layer using the android ndk for experimental purposes in order to exploit the bluetooth equipment onboard commercial handheld devices we shall measure the rssi of these devices by connecting them to a computer or a laptop in this experiment the rssi is being measured continuously in motion from an android device nexus 7 tablet and a nokia mobile phone xpress music from a computer based on ubuntu the source code uses the bluecove bluetooth library to extract the rssi information from these connected devices the android device and the nokia device acts like a server and the computer acts like a client at the computer we need to write the client code that will continuously poll the rssi from our known devices in order to do this we need to first checkout the bluecove bluetooth libraries from here http bluecove org source repository html then we can make use of the bluetoothrssipollingclient java to get the rssi readings we can filter out the other discovered devices using the bluetooth mac address of our known devices we can obtain the bluetooth mac address of a device from the preferences tab of the bluetooth menu in ubuntu after connecting the device with the computer client public void pollrssi try while true try system out println if android_device null system out println android rssi remotedevicehelper readrssi android_device catch exception e system out println android rssi connection error try if nokia null system out println nokia rssi remotedevicehelper readrssi nokia catch exception e system out println nokia rssi connection error thread sleep 2000 catch exception e e printstacktrace for the android device we need to write our own server code in order to overcome the 13 permission denied error we might need to run more than one server thread acceptthread java on the android device so the incoming connection request will be finally accepted after an initial permission denied error we will also specify the rfcomm uuid and a service name which the client can search and connect to the entire server has to be implemented as a service in android bluetoothrssiservice java so that the connection is not lost if the display screen is timed out server public acceptthread bluetoothserversocket tmp null mbluetooth bluetoothadapter getdefaultadapter muuid uuid fromstring 00000003 0000 1000 8000 00805f9b34fb try tmp mbluetooth listenusinginsecurerfcommwithservicerecord bluetoothcustomservice muuid catch ioexception e myserversocket tmp public void oncreate super oncreate thread1 new thread new acceptthread thread1 start first thread will often be denied thread2 new thread new acceptthread thread2 start most probably be accepted for the nokia device there is no explicit server necessary and we can simply connect using the bluetooth serial port profile connection url once the connection is establish we can continuously poll the rssi from both the devices periodically note rssi of bluetooth may not be an efficient and reliable parameter for applications such as indoor positioning source code bluetoothrssipollingclient java acceptthread java bluetoothrssiservice java references a bluetooth based supermarket navigation system pearl manoharan vignesh subramanian anusha vutukuri course project mobile systems 16 332 559 02 f12 rutgers fall 2012 http developer android com guide topics connectivity bluetooth html http stackoverflow com questions 12251785 android bluetooth read rssi signal strength http bluecove org bluecove examples bluecove tester index html comments 6 tags android bluetooth 13 permission denied bluecove tutorial bluetooth console rssi bluetooth rssi indoor navigation hci layer networking nokia bluetooth rssi ubuntu bluez rssi monitor how to execute spec95 benchmarks in simplescalar let us see how to run the spec95 benchmarks little endian namely compress95 anagram go cc1 and perl in simplescalar simulator software each and every benchmark has a corresponding input file that specifies the input to the program and an output file which we can use to verify if our test was successful also we will be writing the output of our simulation to a file with a out extension and we will be printing the execution trace with all the run statistics to a file with a trace extension the little endian version of the benchmarks and the input and output files can be download from the below location after extracting the archive place the folder benchmarks_little in the simplesim 3 0 folder of your simplescalar installation folder all the benchmarks shall be executed from the simplesim 3 0 directory benchmarks_little tar gz compress95 the below command will execute the compress95 benchmark and print the output to compress95 out and log the execution trace to compress95 trace in the results folder sim outorder benchmarks_little programs compress95 ss benchmarks_little input compress95 in 2 benchmarks_little results compress95 trace benchmarks_little results compress95 out go the below command will execute the go benchmark and print the output to go out and log the execution trace to go trace in the results folder sim outorder benchmarks_little programs go ss 50 9 benchmarks_little input 2stone9 in 2 benchmarks_little results go trace benchmarks_little results go out anagram before executing the anagram program place the words file from the input folder in the simplesim 3 0 directory the below command will execute the anagram benchmark and print the output to anagram out and log the execution trace to anagram trace in the results folder sim outorder benchmarks_little programs anagram ss words benchmarks_little input anagram in 2 benchmarks_little results anagram trace benchmarks_little results anagram out cc1 the below command will execute the cc1 benchmark and print the output to 1stmt s in the programs folder and log the execution trace to cc1 trace in the results folder sim outorder benchmarks_little programs cc1 ss o benchmarks_little input 1stmt i 2 benchmarks_little results cc1 trace perl before executing the perl program place the perl tests pl file from the input folder in the simplesim 3 0 directory the below command will execute the perl benchmark and print the output to perl out and log the execution trace to perl trace in the results folder sim outorder benchmarks_little programs perl ss perl tests pl 2 benchmarks_little results perl trace benchmarks_little results perl out references http www simplescalar com http www igoy in simplescalar installation made simple http users ece gatech edu hamblen 4100 course simplescalar spec95 20benchmark 20command 20lines htm http www spec org osg cpu95 comments 1 tags command line to file programming redirect trace file simplescalar beginner s tutorial simplescalar little endian benchmarks download simulate spec95 spec95 commands ubuntu simplescalar the megapixel mp rating of a digital camera the resolution of a digital camera is perceived to be proportional to its pixel count a digital image is nothing but a continuous arrangement of pixels or picture elements resolution is expressed as the number of horizontal pixels multiplied by the number of vertical pixels e g 1600x1200 1 92 mp digital cameras record visual image with the help of ccd or cmos sensors and each pixel of the output image on screen will map to a specific pixel on the image sensor in the digital camera in order to improve the resolution one tends to simply increase the pixel count the more the number of pixels the more details the image will provide and the more it will resemble to the real world image but for a given image or sensor area increasing the number of pixels tends to saturate at a certain point and further increase in pixels doesn t mean much to the human eye a common man will not be able to accurately identify the difference in quality of a usual 10cm x 15cm photograph taken by digital cameras having resolution greater than 5 mp but higher pixel count will be beneficial only when you are trying to generate a bigger picture from a smaller one or when you are trying to crop a particular portion of the picture and try to enlarge it there are some common misinterpretations of resolution which a camera manufacturer might try to exploit since resolution is more like a square function length x height gain in pixel count will not be directly related to resolution gain also some pixels on a digital camera sensor will be used for other compensation mechanisms and not really for capturing the image companies may include this overhead in order to bump up the pixel rating in color displays such as lcd screens subpixel renderin...