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by hippy
Fri Jan 22, 2021 10:43 pm
Forum: Troubleshooting
Topic: Chromium plays some YT videos, not others
Replies: 4
Views: 139

Re: Chromium plays some YT videos, not others

hippy wrote:
Sun Dec 27, 2020 5:37 pm
Move the mouse off the video and instantly, or a very short time later, the video freezes but audio continues.
Don't know if it helps but I noticed the video freeze correlates with the 'progress bar and full screen icon' overlay over the video disappearing.
by hippy
Fri Jan 22, 2021 10:25 pm
Forum: General
Topic: Project generator bug ?
Replies: 4
Views: 83

Re: Project generator bug ?

jamesh wrote:
Fri Jan 22, 2021 8:28 pm
Why can you not put this stuff in github
Employment contract clauses.
by hippy
Fri Jan 22, 2021 8:42 pm
Forum: General discussion
Topic: Weird Pi coding style
Replies: 0
Views: 84

Weird Pi coding style

I noticed this on Page 97 and elsewhere in "Getting started with MicroPython on the Pico", recall some discussion about such style a few weeks ago but cannot locate the thread - conversion_factor = 3.3 / (65535) Does anyone know what the rationale for enclosing the integer literal in paren...
by hippy
Fri Jan 22, 2021 7:07 pm
Forum: General
Topic: Why does the RP2040 processor have dual cores?
Replies: 35
Views: 941

Re: Why does the RP2040 processor have dual cores?

I hope the Pico compiler is nice and snappy, I'm sure it will be. On my Pi 3B (non-plus) compiling the 'blink.c' example ... Initial "cmake ." real 0m2.612s user 0m2.129s sys 0m0.482s First "make" real 0m34.622s user 0m28.924s sys 0m5.459s Subsequent "make" after editi...
by hippy
Fri Jan 22, 2021 6:39 pm
Forum: General
Topic: Project generator bug ?
Replies: 4
Views: 83

Re: Project generator bug ?

It may also be worth adding some sanity checking on Project Name before trying to create it. Doesn't create a working CMakeList.txt if it includes spaces and '.', '..' etc could create some surprises.
by hippy
Fri Jan 22, 2021 6:28 pm
Forum: General
Topic: Project generator bug ?
Replies: 4
Views: 83

Re: Project generator bug ?

Also, Location "/home/pi/mypico" is accepted, but "~/mypico" errors with "Invalid project path".

It would be nice if the utility would accept "~/".
by hippy
Fri Jan 22, 2021 6:13 pm
Forum: General
Topic: Project generator bug ?
Replies: 4
Views: 83

Project generator bug ?

I noted the "Giving us feedback" post requesting issues be raised on github but I cannot do that, so here it is ... Using project generator - Is there an issue with Console Options ? When a single option selected the wrong one appears to be enabled, the desired one disabled ... Neither sel...
by hippy
Fri Jan 22, 2021 5:18 pm
Forum: SDK
Topic: What am I doing wrong ?
Replies: 3
Views: 113

Re: What am I doing wrong ?

Also there is more boilerplate needed in the CMakeFile.txt file, to pull in the Pico SDK build information. The Cmake you have is based on your project being in the examples folder I think. That was it thanks; I couldn't see the tree for the forest in the extensive documentation there is. pi@Pi3B:~...
by hippy
Fri Jan 22, 2021 4:23 pm
Forum: SDK
Topic: What am I doing wrong ?
Replies: 3
Views: 113

What am I doing wrong ?

I effectively replicated the blink.c example and tried to build it ... pi@Pi3B:~/mypico/myblink $ ls CMakeLists.txt myblink.c pi@Pi3B:~/mypico/myblink $ cat CMakeLists.txt add_executable(myblink myblink.c ) # Pull in our pico_stdlib which pulls in commonly used features target_link_libraries(myblink...
by hippy
Fri Jan 22, 2021 2:07 pm
Forum: General discussion
Topic: Use cases for the pi pico?
Replies: 6
Views: 396

Re: Use cases for the pi pico?

A driver for signage displays is one thing I have been thinking about. I believe it can bit bang two 640x480 DVI streams which may not be as great as Full HD but perfectly adequate in many cases.
by hippy
Fri Jan 22, 2021 2:00 pm
Forum: Raspberry Pi 400
Topic: Pros and cons of Rpi400 vs Rpi4 custom-made PC
Replies: 12
Views: 397

Re: Pros and cons of Rpi400 vs Rpi4 custom-made PC

I would also include CM4+CM4IO as a choice. That seems to be the best choice for the Pi PC I would want.
by hippy
Fri Jan 22, 2021 1:50 pm
Forum: General discussion
Topic: Forum and sub-section naming
Replies: 10
Views: 326

Re: Forum and sub-section naming

jamesh wrote:
Fri Jan 22, 2021 11:00 am
I asked for a change to these yesterday morning, whether it happens is another matter!
Many thanks.
by hippy
Thu Jan 21, 2021 8:35 pm
Forum: General discussion
Topic: Forum and sub-section naming
Replies: 10
Views: 326

Forum and sub-section naming

I can't complain about the Pico section of this site having sub-forums but, when coming to look for Unread Posts / Own Posts it is difficult to see that a post relates to the Pico and not anything else -
PICONAME.jpg
PICONAME.jpg (18.69 KiB) Viewed 326 times
Not sure what the solution would be.
by hippy
Thu Jan 21, 2021 8:16 pm
Forum: General
Topic: Why does the RP2040 processor have dual cores?
Replies: 35
Views: 941

Re: Why does the RP2040 processor have dual cores?

Its' also good for having one core do all the network stack and handle the wifi leaving the other core for the application. You don't have to worry about your app hogging the cpu. That seems to be particularly true for bit-banging DVI where a lot of one core can be dedicated to that while the other...
by hippy
Wed Jan 20, 2021 11:16 am
Forum: Troubleshooting
Topic: Rpi4-4Gb - Raspberry os - Usb devices disappeared
Replies: 5
Views: 170

Re: Rpi4-4Gb - Raspberry os - Usb devices disappeared

Bartolo wrote:
Tue Jan 19, 2021 7:46 pm
d_ferdi posted a script to solve his problem. post: pi 4B lost all usb sevices
Do yout think this could be a working solution?
Might be if your problem is the same as his. The easiest way to find out is to try it and see; make a backup, run the script, see if it does.
by hippy
Wed Jan 20, 2021 11:10 am
Forum: Python
Topic: Connecting to remote Pi's via python script
Replies: 7
Views: 248

Re: Connecting to remote Pi's via python script

I have several other pi's running for various tasks and I wanted to get the same data off them from the script running on piOne. I would run a Python http server on the Pi's which returns the required data when requested. The 'pi0one' program then simply needs to request the data from each in turn.
by hippy
Wed Jan 20, 2021 11:02 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Software Serial on GPIO Pins as serial device in Raspbian
Replies: 2
Views: 77

Re: Software Serial on GPIO Pins as serial device in Raspbian

I have a Soft UART driver here which might be suitable. It does better on transmit than receive -

viewtopic.php?p=1697329#p1697329
by hippy
Wed Jan 20, 2021 10:42 am
Forum: General discussion
Topic: Connected fan to the wrong pin now the pi wont boot
Replies: 9
Views: 378

Re: Connected fan to the wrong pin now the pi wont boot

I'd not worry over how the fan was connected but would focus on whether or not the Pi has been destroyed. If it has been it doesn't really matter how.

Is 3V3 present on the 40-way header ?
by hippy
Tue Jan 19, 2021 7:35 pm
Forum: General discussion
Topic: Selling Arcade Cabinets With RetroPie
Replies: 22
Views: 747

Re: Selling Arcade Cabinets With RetroPie

Would it be legal to use RetroPie In the cabinets that I sell? That would be a question best directed at 'retropie' - https://retropie.org.uk But it seems crystal clear to me - https://retropie.org.uk/about/legal ... Selling a pre-installed RetroPie image is not legal – this includes "giving a...
by hippy
Tue Jan 19, 2021 7:19 pm
Forum: Troubleshooting
Topic: update-alternatives: error: no alternatives for python
Replies: 1
Views: 34

Re: update-alternatives: error: no alternatives for python

Raspberry Pi OS includes Python 2.7 by default. What are you doing or what command are you issuing which gives that error, what OS are you using ?
by hippy
Tue Jan 19, 2021 7:10 pm
Forum: General discussion
Topic: Raspberry pi smartphone hardware?
Replies: 7
Views: 333

Re: Raspberry pi smartphone hardware?

I have seen several Raspberry Pi DIY smartphone projects. Could Raspberry Pi tackle smartphone hardware? Perhaps some sort of affordable kit that can be sold? I am sure they could but I can't see there being a business case for doing it. There would need to be a huge amount of investment required t...
by hippy
Tue Jan 19, 2021 6:33 pm
Forum: Troubleshooting
Topic: Issue with Parity using serial communication on PI4
Replies: 46
Views: 1173

Re: Issue with Parity using serial communication on PI4

pravinyouwin wrote:
Tue Jan 19, 2021 4:59 pm
parity=serial.PARITY_ODD,
Set that to PARITY_NONE -- It might not fix anything but at least the code will be correct and it removes one possible cause for failure out of the equation.
by hippy
Tue Jan 19, 2021 6:23 pm
Forum: Troubleshooting
Topic: Issue with Parity using serial communication on PI4
Replies: 46
Views: 1173

Re: Issue with Parity using serial communication on PI4

That half-height pulse is suspicious - it looks like contention on the bus (when two or more things drive it at once). Something like that. The "T" stop bit of PID is not high when it should be, and there's a framing error with the "0x04" supposed data byte as well. The analyser...
by hippy
Tue Jan 19, 2021 2:47 pm
Forum: Troubleshooting
Topic: Rpi4-4Gb - Raspberry os - Usb devices disappeared
Replies: 5
Views: 170

Re: Rpi4-4Gb - Raspberry os - Usb devices disappeared

Bartolo wrote:
Tue Jan 19, 2021 11:28 am
Is the raspberry broken somehow?
I have noticed a number of 'USB ports have disappeared' posts recently so there may be an issue somewhere. Not paid much attention to those myself so may be worth doing a forum search to see if there's anything applicable there.
by hippy
Tue Jan 19, 2021 2:36 pm
Forum: General discussion
Topic: WiringPi - Download 2.52 or replacement
Replies: 17
Views: 748

Re: WiringPi - Download 2.52 or replacement

Thanks for the reply and I appreciate you can only work with what there is. And, appreciating it's not under your control; do you have any ETA as to when libgpio stuff will be usable as a full and practical replacement for direct register access to GPIO ? I'm not sure it ever will be a full replace...

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