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by julyjim
Sat Jul 15, 2017 2:42 pm
Forum: General discussion
Topic: GPIOClass useage?
Replies: 0
Views: 235

GPIOClass useage?

This is "general discussion" forum and I like to discuss with somebody who actually uses this class.
I am planing to use it to program AD9851 DDS chip using serial data - 40 bits.
by julyjim
Sat Jul 15, 2017 2:36 pm
Forum: General discussion
Topic: STICKY: USB boot now working on Pi3
Replies: 543
Views: 263545

Re: USB boot now working on Pi3

Caveat emptor as of now configuring Pi to boot from USB is irreversible (!) (OK it is after all beta, right?) As of now Pi boot from SD is much faster then USB 2.0 will ever be. It is not boot speed only the user should be concerned about, it is operating speed also. The USB ports are ( allegedly ) ...
by julyjim
Wed Mar 08, 2017 3:04 pm
Forum: General discussion
Topic: Windows emulator - wine?
Replies: 19
Views: 9460

Re: Windows emulator - wine?

Thanks for reply.
I did load qemu on my Ubuntu and that is as far as I got.
I need to read all the instruction how to set it up first, that I''ll try it on Pi.
As new user I was just trying different things and I really do not need to run my antenna analyzer on Pi.
by julyjim
Sat Feb 25, 2017 1:51 am
Forum: General discussion
Topic: Raspberry Pi works fine but no red light? Am I doing damage
Replies: 5
Views: 1204

Re: Raspberry Pi works fine but no red light? Am I doing dam

In the USB 1.0 and 2.0 specs, a standard downstream port is capable of delivering up to 500mA (0.5A) ; with USB 3.0, it moves up to 900mA (0.9A). The charging downstream and dedicated charging ports provide up to 1,500mA (1.5A). ... It also supports power draw of 1.5A and 3A over the 5V bus.Aug 2, 2...
by julyjim
Fri Feb 24, 2017 4:06 pm
Forum: General discussion
Topic: USB limits on Pi 3 D-link port
Replies: 3
Views: 726

Re: USB limits on Pi 3 D-link port

USB chip The Raspberry Pi 3 shares the same SMSC LAN9514 chip as its predecessor, the Raspberry Pi 2, adding 10/100 Ethernet connectivity and four USB channels to the board. As before, the SMSC chip connects to the SoC via a single USB channel, acting as a USB-to-Ethernet adaptor and USB hub. That i...
by julyjim
Fri Feb 24, 2017 2:04 am
Forum: General discussion
Topic: Windows emulator - wine?
Replies: 19
Views: 9460

Re: Windows emulator - wine?

The first thing you read about Wine is that "Wine Is Not an Emulator". That is to say that it does not emulate the Intel x86 processor architecture that most Windows programs depend on. It does however provide the libraries such programs need when running on Linux machines running on x86. So, no, W...
by julyjim
Thu Feb 23, 2017 9:38 pm
Forum: General discussion
Topic: Windows emulator - wine?
Replies: 19
Views: 9460

Re: Windows emulator - wine?

MMANA antenna analyzer
Well if processor hardware is the issue, I will just continue using in on Ubuntu with wine, not problem
by julyjim
Thu Feb 23, 2017 9:34 pm
Forum: General discussion
Topic: RED / GREEN LED on Pi 3 ?
Replies: 4
Views: 6098

Re: RED / GREEN LED on Pi 3 ?

Thanks, now I feel better. On my first power up I run too many USB devices (wirless keyboard/mouse, external HD, digital photo camera, video camera) when I noted the red LED and the lightening! I am offloading all to D-link hub next. Did not really expect it would work with 1A power supply I dug out...
by julyjim
Thu Feb 23, 2017 9:23 pm
Forum: General discussion
Topic: Windows emulator - wine?
Replies: 19
Views: 9460

Windows emulator - wine?

I would like to be able to execute Windows application on my new Raspberry PC. Did some research on the subject only to find stale opinions about "why would you want to do that ". I was unsuccessful using sudo apt install , both wine and virtualbox. The error message did not really specify why , onl...
by julyjim
Thu Feb 23, 2017 9:10 pm
Forum: General discussion
Topic: RED / GREEN LED on Pi 3 ?
Replies: 4
Views: 6098

RED / GREEN LED on Pi 3 ?

What exactly is RED LED , next to the micro USB plug, telling me? I assumed it is a power indicator , but it goes off same time when yellow lightning icon {?} appears , generally in upper right corner of the monitor. My best guess it means power trouble, but the PC seems to be working just fine when...
by julyjim
Thu Feb 23, 2017 8:52 pm
Forum: General discussion
Topic: USB limits on Pi 3 D-link port
Replies: 3
Views: 726

USB limits on Pi 3 D-link port

Can someone confirm that only one USB port can be connected to external powered USB hub? I am unable to use wireless USB keyboard / mouse connected to D-link USB hub UNLESS the hub is connected to specific port on Pi. Sorry- I do not know how they count, so I cannot provide better info. I would like...
by julyjim
Wed Feb 01, 2017 2:00 pm
Forum: General discussion
Topic: USB ports bandwidth
Replies: 15
Views: 5031

Re: USB ports bandwidth

Thanks for very compressive answers , appreciate that very much. Small , tiny side note. I am always puzzled why people need to know the actual application . usage / reason the question is posted. I always assume they are curious, but deep down it reminds me of people who repeat the spoken question ...
by julyjim
Wed Feb 01, 2017 1:44 pm
Forum: General discussion
Topic: Boot / run OS from USB port?
Replies: 5
Views: 1696

Re: Boot / run OS from USB port?

So basically the simple answer is yes.
The logical follow up (question) would be "HOW", which I can figure out myself.
Thank you for your help. Appreciate that.
by julyjim
Tue Jan 31, 2017 1:58 pm
Forum: General discussion
Topic: USB ports bandwidth
Replies: 15
Views: 5031

Re: USB ports bandwidth

Thanks for reply, but that was not what I asked , sorry.
by julyjim
Tue Jan 31, 2017 5:19 am
Forum: General discussion
Topic: USB ports bandwidth
Replies: 15
Views: 5031

USB ports bandwidth

Are USB ports connected to common controller or are they separate?
I am concerned about practical USB bandwidth.
How many USB web cams ( small frame format, no HD ) can I connect / run on the entire board?

Thanks
by julyjim
Tue Jan 31, 2017 5:11 am
Forum: General discussion
Topic: Boot / run OS from USB port?
Replies: 5
Views: 1696

Boot / run OS from USB port?

I understand that OS can be downloaded ( into SD ) via USB port.
Is there an access to bios (?) to boot / run OS from USB port?
Thanks

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