December 2017 - Pharo-users

[ANN] OpenSSL-Pharo works on Windows

by Pierce Ng

Hi all, OpenSSL-Pharo now works on Windows. Tested on Windows 10 with a fresh 32-bit Pharo 6.1 zip package downloaded from pharo.org. On Windows this library uses libeay.dll which is bundled with the Pharo VM. Metacello new baseline: 'OpenSSL'; smalltalkhubUser: 'PierceNg' project: 'OpenSSL-Pharo'; load. Pierce

Dec. 20, 2017

Re: [Pharo-users] Pharo things analog reads ?

by K K Subbu

On Wednesday 20 December 2017 03:50 AM, Steven Costiou wrote: > So connecting an Arduino-like device to the raspberry that is > configured as an i2c slave, Pharo can ask for analog values. I will > try tomorrow with analog sensors, I will share if i manage to build > nice examples. > > Seems to be even easier using a special chip: > https://learn.adafruit.com/reading-a-analog-in-and-controlling-audio-volume… An Arduino would be an overkill. Also, there is no need for bitbanging. MCP3008 is are directly supported by the IIO subsystem and its channel data is demuxed in /sys/bus/iio/devices/iio:device<n> http://www.jumpnowtek.com/rpi/Using-mcp3008-ADCs-with-Raspberry-Pis.html HTH .. Subbu

Dec. 20, 2017

Re: [Pharo-users] Metacello with Git

by Dale Henrichs

Sean, I am under the impression that iceberg is able to authenticate with SSH keys .... I am not a pharo/iceberg user myself, but it seems that iceberg should be able to fill that gap. Dale On 12/19/17 7:02 PM, Sean P. DeNigris wrote: > CyrilFerlicot wrote >> For bitbucket you can use bitbucket://. >> I don't know for gitlab. > Unless something has changed, the cool git URLs only work for public > projects. In any case, it was not possible to authenticate with SSH keys > last time I checked (so I could not use them)â¦ > > > > ----- > Cheers, > Sean > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >

Dec. 20, 2017

Re: [Pharo-users] Metacello with Git

by Sean P. DeNigris

CyrilFerlicot wrote > For bitbucket you can use bitbucket://. > I don't know for gitlab. Unless something has changed, the cool git URLs only work for public projects. In any case, it was not possible to authenticate with SSH keys last time I checked (so I could not use them)â¦ ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Dec. 20, 2017

Re: [Pharo-users] Pharo things analog reads ?

by Steven Costiou

hi, i've tried i2c and added ffi calls in WiringPiLibrary. WIRINGPII2CSETUP: DEVID ^self ffiCall: #(int wiringPiI2CSetup (int devId) ) READI2C: FD ^self ffiCall: #(int wiringPiI2CRead (int fd)) Then the following script is able to read a byte from a connected device (i tried with a trinket https://learn.adafruit.com/introducing-trinket/introduction) [1] |lib addr val| lib := WiringPiLibrary uniqueInstance. addr := self wiringPiSetupI2C: 4. _"Setup the i2c to the 0x04 address"_ val := self readI2C: addr. _"Read a byte from the i2c address"_ val inspect So connecting an Arduino-like device to the raspberry that is configured as an i2c slave, Pharo can ask for analog values. I will try tomorrow with analog sensors, I will share if i manage to build nice examples. Seems to be even easier using a special chip: https://learn.adafruit.com/reading-a-analog-in-and-controlling-audio-volume… but it uses more pins on the board. Steven. Le 2017-12-17 19:48, Denis Kudriashov a Ã©crit : > Hi Steven > > 2017-12-17 12:40 GMT+01:00 Steven Costiou <steven.costiou(a)kloum.io>: > >> Hi, >> >> For what i know, raspberry pi boards cannot read analog sensors (which are the most interesting imo), except by connecting to some kind of bridges or to Arduino boards. >> >> In the PharoTHings code i see that there are Arduino classes, and also it is based on wiringpi and wiringpi provides support for i2c which is needed to connect to an Arduino and perform analog reads. >> >> I'm exploring the wiringpi doc to see if there is an example for that, but in the meantime, would someone already have an example of analog reads with PharoThings, with working code (even simple) ? > > It is in my todo. I need to build example with temperature sensor. I will continue work on it next year. > Now feel free to contribute to the project. > > About Arduino: it is not finished. Problem that I use Mac but serial port is not working there (it is required for Firmata) > >> Steven. Links: ------ [1] https://learn.adafruit.com/introducing-trinket/introduction)

Dec. 19, 2017

Re: [Pharo-users] Metacello with Git

by Vitor Medina Cruz

Thanks. On Tue, Dec 19, 2017 at 4:40 PM, Cyril Ferlicot D. <cyril.ferlicot(a)gmail.com > wrote: > Le 19/12/2017 Ã 19:25, Vitor Medina Cruz a Ã©crit : > > Hello, > > > > Using github://<github_path>/<srcpath> metacello works fine, but is > > there another more general way of refering to a remote git repo? From > > BitBucket or Gitlab for example. > > > > Hi, > > For bitbucket you can use bitbucket://. > I don't know for gitlab. > > Anyway, we are talking about the possibility to use custom URLs that > would also allow to depend on a git repository from a private server. > > See discussion at: https://github.com/Metacello/metacello/issues/474 > > > Regards, > > Vitor > > > -- > Cyril Ferlicot > https://ferlicot.fr > > http://www.synectique.eu > 2 rue Jacques PrÃ©vert 01, > 59650 Villeneuve d'ascq France > >

Dec. 19, 2017

Re: [Pharo-users] Metacello with Git

by Dale Henrichs

BitBucket is supported with like Github with: butbucket://<butbucket_path>/<srcpath>. With regards to GitLab, their download zip format is/was different enough from BitBucket/Github to make it difficult to provide the same level of support. See the series of comments here[1]. When the github:// was first introduced it was done in such a way that users of projects on GitHub did not have to have git installed on their local computers ... it was a way to make it possible for folks to begin using git without requiring everyone to install git ... These days, we are getting to the point where I am beginning to flip the question on it's head and begin thinking that it should be possible forÂ a developer to choose to have have the github:// url interpreted as "create a local clone of the remote repository" instead of "download a tarball of the remote repository" . With this approach it should be possible to include gitlab url support as well since the gitlab issue is related to the specific handling of repository tarballs... ... there are current discussions in this area on these two issues [2] and [3]. Dale [1] https://github.com/Metacello/metacello/issues/287#issuecomment-59815235 [2] https://github.com/Metacello/metacello/issues/474 [3] https://github.com/Metacello/metacello/issues/475 On 12/19/17 10:25 AM, Vitor Medina Cruz wrote: > Hello, > > Using github://<github_path>/<srcpath> metacello works fine, but is > there another more general way of refering to a remote git repo? From > BitBucket or Gitlab for example. > > Regards, > Vitor

Dec. 19, 2017

Re: [Pharo-users] Metacello with Git

by Cyril Ferlicot D.

Le 19/12/2017 Ã 19:25, Vitor Medina Cruz a Ã©critÂ : > Hello, > > Using github://<github_path>/<srcpath> metacello works fine, but is > there another more general way of refering to a remote git repo? From > BitBucket or Gitlab for example. > Hi, For bitbucket you can use bitbucket://. I don't know for gitlab. Anyway, we are talking about the possibility to use custom URLs that would also allow to depend on a git repository from a private server. See discussion at: https://github.com/Metacello/metacello/issues/474 > Regards, > Vitor -- Cyril Ferlicot https://ferlicot.fr http://www.synectique.eu 2 rue Jacques PrÃ©vert 01, 59650 Villeneuve d'ascq France

Dec. 19, 2017

Metacello with Git

by Vitor Medina Cruz

Hello, Using github://<github_path>/<srcpath> metacello works fine, but is there another more general way of refering to a remote git repo? From BitBucket or Gitlab for example. Regards, Vitor

Dec. 19, 2017

Re: [Pharo-users] Roassal Axes

by Alexandre Bergel

Sorry, here is the correct script: -=-=-=-=-=-=-=-=-= "This example shows how to control the center of the graph. Roassal assumes to have 0 @ 0, however you can subtract a value using #x: and #y:, and then add it in #labelConversion: to move the center of the graph" graphCenter := 5 @ 10. data := (-3.1415 to: 3.1415 by: 0.1) collect: [ :x | x @ (x sin * 3 + 10) ]. b := RTGrapher new. ds := RTData new. ds noDot; connectColor: Color blue. ds points: data. ds x: [ :p | p x - graphCenter x ]. ds y: [ :p | p y - graphCenter y ]. b add: ds. b axisX labelConversion: [ :v | (v + graphCenter x) asFloat round: 2 ]. b axisY labelConversion: [ :v | (v + graphCenter x) asFloat round: 2 ]. b. -=-=-=-=-=-=-=-=-= Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > On Dec 19, 2017, at 3:17 PM, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > > Another example: > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > "This example shows how to control the center of the graph. > Roassal assumes to have 0 @ 0, however you can subtract a value using #x: and #y:, and then add it in #labelConversion: to move the center of the graph" > graphCenter := 5 @ 10. > data := (-3.1415 to: 3.1415 by: 0.1) collect: [ :x | x @ (x sin * 3 + 10) ]. > b := RTGrapher new. > ds := RTData new. > ds noDot; connectColor: Roassal2.Color blue. > ds points: data. > ds x: [ :p | p x - graphCenter x ]. > ds y: [ :p | p y - graphCenter y ]. > b add: ds. > b axisX labelConversion: [ :v | (v + graphCenter x) asFloat ]. > b axisY labelConversion: [ :v | (v + graphCenter x) asFloat ]. > b. > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu <http://www.bergel.eu/> > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > >> On Dec 19, 2017, at 3:05 PM, Alexandre Bergel <alexandre.bergel(a)me.com <mailto:alexandre.bergel@me.com>> wrote: >> >> Hi Evan, >> >> Roassal assumes to have 0 @ 0. However, you do a manual translation that works very well. Check this: >> >> -=-=-=-=-=-=-=-=-=-=-=-=https://www.dropbox.com/s/oun1w85ypv1kbka/Screenshot%202017-12-19%2015.02.07.png?dl=0 <https://www.dropbox.com/s/oun1w85ypv1kbka/Screenshot%202017-12-19%2015.02.0…> >> data := #(1000 1001 1002). >> b := RTGrapher new. >> ds := RTData new. >> ds points: data. >> ds x: [ :c | c - 1000]. >> ds y: [ :c | c - 1000 ]. >> b add: ds. >> b axisX labelConversion: [ :v | (v + 1000) asFloat ]. >> b axisY labelConversion: [ :v | (v + 1000) asFloat ]. >> b. >> -=-=-=-=-=-=-=-=-=-=-=-= >> <Screenshot 2017-12-19 15.02.07.png> >> >> The idea is to subtract a value using #x: and #y:, and then add it in #labelConversion: >> >> Let us know how it goes >> >> -- >> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> Alexandre Bergel http://www.bergel.eu <http://www.bergel.eu/> >> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> >> >> >>> On Dec 19, 2017, at 12:44 PM, Evan Donahue <emdonahu(a)gmail.com <mailto:emdonahu@gmail.com>> wrote: >>> >>> Does anyone know how to change the min/max of the axes? I'm trying to figure out how to make x and y not start at 0. >>> >>> data := #(1000 1001 1002). >>> b := RTGrapher new. >>> ds := RTData new. >>> ds points: data. >>> ds x: [ :c | c ]. >>> ds y: [ :c | c ]. >>> b add: ds. >>> b minX: 999. >>> b maxX: 1003. >>> b minY: 999. >>> b maxY: 1003. >>> b. >>> >>> ^ this does not do what I was expecting. If the data is all clustered together but far from zero, I'd like to adjust the axes so I can see the actual variation in the data, and not just a single point where everything is clustered. What is the right way to do this? >>> >>> Thanks, >>> Evan >> >

Dec. 19, 2017