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by Gavinmc42
Sat Sep 22, 2018 6:54 am
Forum: Gentoo
Topic: Mesa/OpenGL driver updating
Replies: 0
Views: 21

Mesa/OpenGL driver updating

Hi Sakaki,

Noticed there is a new release ofMesa3D
https://www.mesa3d.org/relnotes/18.2.1.html
Eric has some v3d bug fixes.
How do I keep the VC4 OpenGL driver up to date?

I can compile the Mesa examples etc fine but no clue on how to make a new driver.
by Gavinmc42
Fri Sep 21, 2018 8:52 am
Forum: Graphics programming
Topic: Embedded Graphics Development Platform?
Replies: 3
Views: 82

Re: Embedded Graphics Development Platform?

$30? hmm, a few YouTubes around. $52 Ozzie dollars plus shipping? 320x240? Xmas is coming will add it to my Santa list. Baremetal OpenVG Clock etc https://ultibo.org/forum/viewtopic.php?f=15&t=659&start=30 https://ultibo.org/forum/viewtopic.php?f=9&t=843 For graphic code testing I use USB boot mode ...
by Gavinmc42
Fri Sep 21, 2018 2:31 am
Forum: Beginners
Topic: So i can install a third party 64-bit Linux OS in RPi 3 B+
Replies: 12
Views: 491

Re: So i can install a third party 64-bit Linux OS in RPi 3 B+

Having 31 general purpose registers and 32 floating point registers makes a big difference (for example: if a function only uses scalar variables, then it is rare for the stack to need adjusting all the time). Have you tried using NEON in Aarch64? I think it should be much faster. I got ARM's Compu...
by Gavinmc42
Thu Sep 20, 2018 10:27 am
Forum: Beginners
Topic: So i can install a third party 64-bit Linux OS in RPi 3 B+
Replies: 12
Views: 491

Re: So i can install a third party 64-bit Linux OS in RPi 3 B+

Why do you want a 64-bit OS on a computer with only 1GB of RAM anyway? Plus the ram is only 32bit wide anyway so if anything it can be slower. But if you want to learn/play with Aarch64bit coding having a 64bit OS is handy. Gentoo64 is my current Pi favorite, very different from Debian based OS's. ...
by Gavinmc42
Thu Sep 20, 2018 3:59 am
Forum: General discussion
Topic: Pixy Camera
Replies: 11
Views: 5462

Re: Pixy Camera

BCM2835 on one side of PCB, image sensor on the other = Pixycam6? Could even be made smaller due to the pop memory on the BCM2835. It would run all Pi software too. And because it would be smaller at Pi Zero's speed, ie 1GHz . One day Zeros will be A35 based Aarch64 and the BCM2835's are freed up fo...
by Gavinmc42
Wed Sep 19, 2018 3:55 am
Forum: Beginners
Topic: Raspbian Stretch not 64bit?
Replies: 35
Views: 13230

Re: Raspbian Stretch not 64bit?

Are you sure you got a 64bit version?

I use Gentoo64 on my Pi3B+'s
Have not tried MongoDB etc but Gentoo64 comes with lots of stuff so I'm not sure.
by Gavinmc42
Fri Sep 14, 2018 10:46 am
Forum: Camera board
Topic: Transmitting video signal
Replies: 6
Views: 182

Re: Transmitting video signal

Pi's have a analog TV output, plug that into a 5.8GHz RPV transmitter.

You are just using a Pi instead of the normal tiny analog FPV camera.
You could even do text overlay, ie GPS position.
by Gavinmc42
Thu Sep 13, 2018 2:55 am
Forum: General discussion
Topic: High Endurance SD card
Replies: 42
Views: 7978

Re: High Endurance SD card

I now use A1 rated cards for Raspbian and Gentoo64 but for 24/7 Pi's I use PiCore Linux as it reads the OS into ram and runs from that. For baremetal Pi gadgets I have less need for massive memory and I prefer smaller sized SLC cards. The higher capacity cards have less rewrite cycles and cost much ...
by Gavinmc42
Wed Sep 12, 2018 5:14 am
Forum: General discussion
Topic: Looks like Firefox is now officially unsupported in Raspbian
Replies: 13
Views: 508

Re: Looks like Firefox is now officially unsupported in Raspbian

Whoops, forgot Eric's work on OpenGL/VC4/mesa which Gentoo64 is using.
Three peoples work, plus help from many others ;)
by Gavinmc42
Wed Sep 12, 2018 5:10 am
Forum: General discussion
Topic: Looks like Firefox is now officially unsupported in Raspbian
Replies: 13
Views: 508

Re: Looks like Firefox is now officially unsupported in Raspbian

However, if I switch, I'll miss much of the fun on these forums. I know, I find I am actually using Gentoo64 to do work, how crazy it that :lol: Mind you learning OpenGL and Blender is hard work ;) NeddySeagoon's efforts to port Rust before compiling Firefox was a saga in itself. And Sakaki's great...
by Gavinmc42
Wed Sep 12, 2018 12:30 am
Forum: General discussion
Topic: Looks like Firefox is now officially unsupported in Raspbian
Replies: 13
Views: 508

Re: Looks like Firefox is now officially unsupported in Raspbian

Time to move to Gentoo64? Firefox works there, handled 30 tabs fine. The trend is for heavy metal apps like browsers to move towards 64bits. Most Desktops and Smart Phones/Tablets now run 64bit CPUs. Not sure how much longer Raspbian can hang in on 32bit, 2-3years? Probably forever as Pi's are now r...
by Gavinmc42
Tue Sep 11, 2018 11:36 pm
Forum: General programming discussion
Topic: raspi taking photo on boot every day at 10past and 50past
Replies: 13
Views: 240

Re: raspi taking photo on boot every day at 10past and 50past

You can do a sequential filename by writing the name of the image file into a file and then next time cron fires your script the script reads the fillename out of the file and increments it then writes it back. Or if you have a network connection or RTC use a file name with the timestamp in it. You ...
by Gavinmc42
Tue Sep 11, 2018 8:41 am
Forum: General programming discussion
Topic: Truly portable lightweight GUI toolkit?
Replies: 17
Views: 506

Re: Truly portable lightweight GUI toolkit?

That Nuklear looks very interesting, modern flat style too. https://rawgit.com/vurtun/nuklear/master/doc/nuklear.html Usage To draw all draw commands accumulated over a frame you need your own render backend able to draw a number of 2D primitives. This includes at least filled and stroked rectangles...
by Gavinmc42
Tue Sep 11, 2018 8:32 am
Forum: Bare metal, Assembly language
Topic: Accelerated graphics
Replies: 52
Views: 6938

Re: Accelerated graphics

Pascal?
Show your teacher this, it's ozzie too :D
https://ultibo.org/
And yes accelerated graphics works now.
by Gavinmc42
Tue Sep 11, 2018 7:26 am
Forum: Raspbian
Topic: Will people please think about low res displays?
Replies: 45
Views: 1137

Re: Will people please think about low res displays?

I just got a Waveshare 480x320 3.5", that Raspbian sort of works at all is amazing :lol: 800x480 is much nicer, but it was for testing DIY GUI's I got the smaller display for. Have yet to try the 240x240 1.5" :lol: Even now I have found Retropie gets faster FPS on 320x240 and it too slow without spe...
by Gavinmc42
Tue Sep 11, 2018 6:37 am
Forum: Raspbian
Topic: Less X?
Replies: 18
Views: 442

Re: Less X?

I have been using Gentoo64 on Pi3B+'s which is using the latest OpenGL driver. For 3D - Blender for Artists which is Blender with an easy to learn UI which also uses OpenGL. FreeCAD for other STL stuff. OpenGL can run without X11, same with OpenVG/GLES. X11 does the Windowing stuff? So do it without...
by Gavinmc42
Tue Sep 11, 2018 5:11 am
Forum: General programming discussion
Topic: Truly portable lightweight GUI toolkit?
Replies: 17
Views: 506

Re: Truly portable lightweight GUI toolkit?

Anyway, that program required a lot of memory so I used the Watcom C compiler that could generate 32 bit code and access all the megabytes of the new 386 based PC's that were coming along. All in a flat address space, none of that old 64K segmented memory of the DOS world. It still lives :o http://...
by Gavinmc42
Tue Sep 11, 2018 1:12 am
Forum: General programming discussion
Topic: Truly portable lightweight GUI toolkit?
Replies: 17
Views: 506

Re: Truly portable lightweight GUI toolkit?

The Sonoran desert must be like a retirement community for old and retro micro guys who don't like Florida ;) Alternative lifestylers are probably also going to be alternative OS users? I wish your community was typical of the Rest of the World, but burbanites are stuck in the trap of consumerism. N...
by Gavinmc42
Fri Sep 07, 2018 2:07 am
Forum: Beginners
Topic: New to Raspberry - camera on axis, stacking images.
Replies: 7
Views: 221

Re: New to Raspberry - camera on axis, stacking images.

I seem to remember a focus stacked picture of a toy cow done with a Pi camera ;) You can make UI's in QT running on Raspbian etc, learn Linux, learn QT then wait long time for booting ;) But I like Ulibo for standalone because it is only a 2 second boot and much simpler to code. UIs in Ultibo can us...
by Gavinmc42
Thu Sep 06, 2018 1:53 am
Forum: Beginners
Topic: New to Raspberry - camera on axis, stacking images.
Replies: 7
Views: 221

Re: New to Raspberry - camera on axis, stacking images.

Sometimes learning Linux can get in the way of just doing stuff. New to Pi is new to Linux? You might want to try without Linux, this is not much more complex than Arduino's. https://ultibo.org/ A Zero booting from a USB port on a PC could do it, no SD card needed for testing code . Even an Arduino ...
by Gavinmc42
Thu Sep 06, 2018 1:29 am
Forum: Beginners
Topic: Realtime data logging
Replies: 5
Views: 202

Re: Realtime data logging

Every minute or more is well within the Pi's capabilities. You will need a network connection to get the time set via NTP. I usually have a loop on boot that waits for the ip address and then the network time. This can take up to 30 seconds or so. Without a network, GPS module time is another to set...
by Gavinmc42
Tue Sep 04, 2018 11:35 pm
Forum: Graphics, sound and multimedia
Topic: Ultrasonic Detection
Replies: 2
Views: 175

Re: Ultrasonic Detection

Detecting the freqs above 10KHz - use a high pass analog filter circuit with rectified detector. The actual freq detection is a bit harder, mostly these days high speed ADC with FFT on a DSP. If you are good with software then a single bit Sigma Delta ADC could be made with a comparator. https://www...
by Gavinmc42
Tue Sep 04, 2018 7:23 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: I2C-0 on a RPi Zero W
Replies: 2
Views: 85

Re: I2C-0 on a RPi Zero W

Been a while but i2c0 is usable on Zero's A+, B+, I use it in baremetal.
Put this in config.txt

Code: Select all

dtparam=i2c_vc=on
Or whatever the newest command is?
by Gavinmc42
Tue Sep 04, 2018 12:21 am
Forum: AIY Projects
Topic: New Ai for business and personal life
Replies: 7
Views: 334

Re: New Ai for business and personal life

First time poster? To learn AI you will need to give up your business and personal life for a few months perhaps years. And perhaps the google forums will be better place to ask. Moderators here don't have time to learn it for you then tell you how to use it. Pi's are about learning and DIY computin...
by Gavinmc42
Mon Aug 27, 2018 4:48 am
Forum: Off topic discussion
Topic: CortexM4F and Rasberrypi
Replies: 19
Views: 3011

Re: CortexM4F and Rasberrypi

When I asked him about it a month or so ago he said nothing had been delivered and he had no news.

Any idea what goes on with that?
No idea, I don't have spare $$ for Kickstarters, I have to save for Zero's ;)
Last time I heard a new basestation was coming at about $200.

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