- Pharo-iot - lists.pharo.org

test

by Denis Kudriashov

somehow I did not get any mails

April 30, 2020

new devices

by Rob van Lopik

Thank you, Allex, for your comments. When time permits, I will separate the issues into different posts. As a first step I have put code for two devices on Github: - https://github.com/robvanlopik/PCA9685-PWMExpander - https://github.com/robvanlopik/DS1307-TinyRTC While working on the PWM module, it occurred to me that PharoThings has two different points of view. The first I would call "board-centric", where we tell the board what to do with its pins. That is also the way my PotPCA9685Device works. On the other hand there is the "pin-centric" view where pins have functions and are told what to do. This view is used in the inspectors. As the outputs of the PCA9685 look very much like GPIO pins, I wondered whether it would be worthwhile to model them as such. This doesn't seem possible in a direct way, so it would need the introduction of a PotBoardExpander. Maybe PotBoardConnector could be adapted for this purpose, but I think it should be something different. This reasoning also stems from my feeling that the Arduino is not really a PotBoard. For one thing, there is no reason why it would have to be a singleton; I can attach Arduinos through numerous serial and USB ports (and Bluetooth). On the other hand it would very well fit the description of a PotBoardExpander. In that case PotBoard should have a superclass PotController that allows for having no pins of its own.. so any computer can control one or more Arduinos (To be precise, by "Arduino" I mean a Arduino-like board running the Firmata sketch and communicating through the Firmata protocol). The reason one would want to do this, is to have a uniform way of controlling pins, irrespective of board or device. Maybe this uniformity can also be achieved by implementing the protocol of PotBoardDriver for any device that has GPIO-like pins. I have not been able to find a description of the design of PharoThings, but maybe someone wants to comment on these thoughts. In the meantime I will start looking at Firmata. cheers, Rob van Lopik

April 23, 2020

getting started

by Rob van Lopik

Hello all, since last summer I have been looking at Pharo-IoT. I am not new to Smalltalk (from Digitalk, Dolphin to Squeak on my first Pi, using the VM that came with Scratch) but not a professional. I run Pharo directly on the Pi as the Pi3B+ and Pi4 are fast enough to give a reasonable user experience (using VNC). In that way I also can use diverse utilities and Python to control the GPIO's. In the meantime I have written some code for the DS1307 real time clock, and for the PCA9685 PWM/ServoÂ port expander. I want to put these on Github, but now I run into the problem that Iceberg doesn't run on the Pi because of a missing libgit2.so. How do you solve this problem? Just put up .st filesÂ (classic st or tonel?). Other questions that have arisen: What about Pharo version 8? It seems to run on the Pi (after tricking it by putting a symlink libgit2.so in the VM directory), but when I tried to load IoT in an 32 bits image on Windows I got lots of errors stemming from Calypso. Is somebody working on this? I am also interested in Arduino. There is some support for it, but it doesn't seem complete. Furthermore I would like to use different kind of Arduino-like boards. Again, is somebody working on this? If not, I could take this up. Maybe including "configurable Firmata". It looks like I will have some spare time for the next months (locked up due to Corona restrictions) and I would like to contribute something useful and not duplicate work other people are doing. Please let me know of your ideas. Rob van Lopik -- This email has been checked for viruses by AVG. https://www.avg.com

March 23, 2020

Test

by Torsten Bergmann

Sept. 6, 2019

Re: [Pharo-iot] Test

by Marcus Denker

geht. Footer werde ich noch anpassen. > On 5 Sep 2019, at 17:01, Norbert Hartl <norbert(a)hartl.name> wrote: > > > -- > Pharo-iot mailing list > Pharo-iot(a)lists.pharo.org > http://lists.pharo.org/mailman/listinfo/pharo-iot_lists.pharo.org

Sept. 5, 2019

Test

by Norbert Hartl

Sept. 5, 2019