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by ghans
Fri Jan 19, 2018 9:58 am
Forum: Beginners
Topic: USB Communication between Pi and external device
Replies: 7
Views: 188

Re: USB Communication between Pi and external device

PySerial is all you need. Raspbian supports hundreds if not thousands of USB devices via kernel modules, including FDTI USB-Serial chips. PyUSB and libusb are only for people who write USB device drivers in userspace (as opposed to kernel modules). You would really know if you were one of those peop...
by ghans
Thu Jan 18, 2018 9:05 am
Forum: Beginners
Topic: USB Communication between Pi and external device
Replies: 7
Views: 188

Re: USB Communication between Pi and external device

If the meter really includes a FTDI chip it might be plug-and-play. A /dev/ttyUSBX device file will appear automatically, which emulates a serial port. All programming languages can read and write this file and all programming languages support configuring this file directly or through libraries. St...
by ghans
Wed Jan 17, 2018 8:43 am
Forum: General discussion
Topic: Raspbian Modification
Replies: 14
Views: 573

Re: Raspbian Modification

It sounds like you want a write a new desktop environment for the Pi. You would be well advised to base it on X and the freeedesktop.org standards for the time being. Most desktop environments are written in C/C++ but technically every language can be used. You also should check which components of ...
by ghans
Mon Jan 15, 2018 8:03 am
Forum: General programming discussion
Topic: Raspberry Pi Programming Radio Hacking / Transmitting
Replies: 2
Views: 141

Re: Raspberry Pi Programming Radio Hacking / Transmitting

No Raspberry Pi has audio inputs by default.
It seems that you should convert your speaker output to line level and then transmit that
wirelessly. I can't see how a Pi-based solution is going to beat an fully analog system in reliability, cost, ease of use and boot time.

ghans
by ghans
Sat Jan 13, 2018 9:54 am
Forum: Beginners
Topic: SD Card Reliability Question
Replies: 5
Views: 181

Re: SD Card Reliability Question

I do not understand how and why you use FTP if the Pi has no connection to the internet.
Who and where is the FTP server and who and where is the FTP client ?

ghans
by ghans
Wed Jan 10, 2018 4:07 pm
Forum: Raspbian
Topic: Raspbian security and cryptocurrencies
Replies: 2
Views: 166

Re: Raspbian security and cryptocurrencies

Antivirus on Linux is mostly used to protect Windows users on the same network ... especially ClamAV which is the only thing available on Raspbian. It is not neccessary either way. The first three paragraphs are the most important, read and follow them: https://www.raspberrypi.org/documentation/conf...
by ghans
Wed Jan 10, 2018 3:51 pm
Forum: Deutsch
Topic: Problem beim installieren des Betriebssystems
Replies: 3
Views: 168

Re: Problem beim installieren des Betriebssystems

Auch ich empfehle "rohe" images (in .zip Dateien verpackt) zusammen mit Etcher. Etcher spuckt im Falle des Falles viel früher verständliche Warnmeldungen aus, was wiederum allen Zeit und Ärger erspart.

ghans
by ghans
Wed Jan 10, 2018 3:47 pm
Forum: Graphics programming
Topic: GUI - which graphics library/system to use
Replies: 6
Views: 274

Re: GUI - which graphics library/system to use

Qt5 should be quite smooth even on the old models. It completely ignores X and works directly with the old and stable OpenGLES 3D driver.

ghans
by ghans
Sat Jan 06, 2018 2:41 pm
Forum: Beginners
Topic: Using RTOS kernel file
Replies: 4
Views: 152

Re: Using RTOS kernel file

Since when does FreeRTOS support remote control through VNC or SSH ?

ghans
by ghans
Sat Jan 06, 2018 11:09 am
Forum: Other
Topic: Booting img files
Replies: 8
Views: 306

Re: Booting img files

You may want to look into the work done by OpenSUSE. They ported a combination of GRUB2 and u-boot to the Pi3. Properly configured (copying SuSE work) that should give you a familiar and superior multiboot experience. Might only work in AARCH64 mode though. Last but not least Microsoft (and SuSE ?) ...
by ghans
Wed Jan 03, 2018 12:31 pm
Forum: General discussion
Topic: vainfo returns error. What driver do i need?
Replies: 4
Views: 168

Re: vainfo returns error. What driver do i need?

You should look into V4L2 instead of VAAPI. VAAPI is the wrong address if you want to play around with cameras/video input devices. sudo apt-get install qv4l2 QV4L2 is a nice app to play around with/test cameras (written with Qt !). If you want to use the offcial camera module don't forget to load i...
by ghans
Mon Jan 01, 2018 11:35 am
Forum: Cases
Topic: Case that will support DVD/Blu-ray 5 1/4" drive?
Replies: 2
Views: 240

Re: Case that will support DVD/Blu-ray 5 1/4" drive?

There is one piece of software which enables you to play recent Blu-Ray movie discs under Linux. It is able to rip on-the-fly and feed into VLC. It is also proprietary, the AACS keys it uses are in constant danger of revocation (feeding the paranoia of the author and the users) and it is only availa...
by ghans
Sat Dec 30, 2017 9:19 pm
Forum: Gaming
Topic: Choppy Games?
Replies: 4
Views: 272

Re: Choppy Games?

The program "rpix86" contains essential optimizations for the Raspberry Pi. It emulates a regular PC from the 90s with MS-DOS , VGA and all that jazz. It was written to play those old games on a Raspberry Pi. Another option would be "DOSBox" (which is also a PC + MS-DOS emulator). At least for earli...
by ghans
Fri Dec 29, 2017 9:13 am
Forum: Windows 10 for IoT
Topic: SFTP with Win IoT?
Replies: 2
Views: 196

Re: SFTP with Win IoT?

The SSH server on Windows 10 IoT has a SFTP subsytem/module ?

ghans
by ghans
Fri Dec 29, 2017 9:02 am
Forum: Beginners
Topic: Salvaging sd card after corruption
Replies: 5
Views: 285

Re: Salvaging sd card after corruption

The first thing to do in such cases is to take a full image with Win32DiskImager. Store the image and the real SD card in different places. Create a working copy of the image file. After that boot into Linux. Linux can easily mount the working copy with kpartx, but only if the fileseystem itself is ...
by ghans
Thu Dec 28, 2017 8:21 am
Forum: General discussion
Topic: Two Raspberrypi's Checking Eachothers IO Ports Over Network
Replies: 4
Views: 202

Re: Two Raspberrypi's Checking Eachothers IO Ports Over Network

pigpio has been preinstalled on Raspbian for quite some time. It does support remote control of GPIO thanks to its client-server architecture.

ghans
by ghans
Thu Dec 28, 2017 7:56 am
Forum: Troubleshooting
Topic: Pi B+ boards ELPIDA/Samsung
Replies: 3
Views: 191

Re: Pi B+ boards ELPIDA/Samsung

Replace bootcode.bin, fixup.dat and start.elf on the SD card with the ones downloaded from the link above.
by ghans
Wed Dec 27, 2017 7:31 pm
Forum: Networking and servers
Topic: What's the best way to remote access music on my Pi3?
Replies: 8
Views: 405

Re: What's the best way to remote access music on my Pi3?

VLC for Android supports SFTP. You just need to forward port 22 on your router. Now you can play music from the other side of the globe if you know your home IP adress (DynDNS ?). Sadly, this drains the battery quite fast. Perhaps you could use MPD and its http output module ? I suppose a DynDNS or ...
by ghans
Wed Dec 27, 2017 3:46 am
Forum: Java
Topic: Embedded java running on raspberry Pi
Replies: 3
Views: 261

Re: Embedded java running on raspberry Pi

The JDK and Netbeans work together. The JDK has been preinstalled on Raspbian since 2016. So i think you would only need to install Netbeans to complete the setup. Please use "Add/remove software" to do that. It uses apt under the hood and prevents mistakes.

ghans
by ghans
Tue Dec 26, 2017 5:41 pm
Forum: Java
Topic: Embedded java running on raspberry Pi
Replies: 3
Views: 261

Re: Embedded java running on raspberry Pi

The Raspberry Pi supports Java Standard Edition. I suggest not unneccessarily focusing on any other Java subset.

You might want to install Netbeans via apt-get. It is a Java IDE.

ghans
by ghans
Sun Dec 24, 2017 9:28 pm
Forum: Advanced users
Topic: Os/firmware development
Replies: 19
Views: 1117

Re: Os/firmware development

Do you know any programming language ? gcc is a tool programmers use.
Your goal seems hard to reach without programming skills.

ghans
by ghans
Thu Dec 21, 2017 8:40 am
Forum: Beginners
Topic: obtain caller id from raspberry pi
Replies: 26
Views: 914

Re: obtain caller id from raspberry pi

Either you use an USB modem or you don't. Either you use an AT adaptor or you don't. If you refuse to use an USB modem or AT adaptor you must at least know how those things work internally and be able to identify their major components. Using your electrical engineering skills you must now design a ...
by ghans
Thu Dec 21, 2017 8:02 am
Forum: Beginners
Topic: Better GPIO coding?
Replies: 5
Views: 260

Re: Better GPIO coding?

Can we see your whole code ?

ghans

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