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by Andy1978
Fri Dec 07, 2018 6:32 am
Forum: Compute Module
Topic: eMMC flash memory reliability
Replies: 12
Views: 5236

Re: eMMC flash memory reliability

It would be very useful to have the possibility to read the wear leveling stats via some kernel interface or vcgencmd. For a commercial product it is important to run the system for 2 months and then roughly estimate the future lifetime under this condition. As far as I understand the BCM2837 does t...
by Andy1978
Wed Oct 31, 2018 11:09 am
Forum: Compute Module
Topic: [SOLVED] Wrong Part Number provided for the SODIMM Connector
Replies: 7
Views: 4286

Re: Wrong Part Number provided for the SODIMM Connector

I'm using digikey A114851-ND, TE Connectivity AMP Connectors 1473005-4
by Andy1978
Wed Oct 31, 2018 10:32 am
Forum: Compute Module
Topic: CM3 and vc4 driver
Replies: 4
Views: 3855

Re: CM3 and vc4 driver

As far as I understand there was a merge from Erics PR https://github.com/raspberrypi/linux/pull/2429

Does this only enable DPI for the mentioned adafruit display?
I've updated to the lastes kernel (4.14.78-v7+) and firmware (724d81b3f87eb71045e938e572eca140fb8828ab) but still have a black display
by Andy1978
Wed Feb 22, 2017 11:26 am
Forum: Compute Module
Topic: CM3 length between BCM2837 and 200pin connector
Replies: 3
Views: 735

Re: CM3 length between BCM2837 and 200pin connector

Can you explain why you want to length match these digital signals? The 28 pins used for DPI24 are a parallel bus and you want the D0-D23 bits stable on the edge of PCLK. It's not that critical on 80MHz pixelclock but If I make a new PCB I want the maximum "temporal signal-to-interference ratio" (e...
by Andy1978
Thu Feb 16, 2017 6:30 pm
Forum: Compute Module
Topic: CM3 length between BCM2837 and 200pin connector
Replies: 3
Views: 735

CM3 length between BCM2837 and 200pin connector

Dear all, I want to make a new PCB for the CM3 and use DPI24 for the LCD. Is there a list (or can a developer export them from EDA) with the length of traces GPIO0..GPIO27 (Bank0) between the connector and the CPU? Background: I want to route them as matched length group with meander. Thank you in a...
by Andy1978
Wed Aug 17, 2016 6:57 am
Forum: Advanced users
Topic: Sending video to raspberry pi
Replies: 8
Views: 1673

Re: Sending video to raspberry pi

You can capture the webcam directly with the octave-forge image-acquisition package (http://wiki.octave.org/Image_acquisition_package) in GNU Octave and process it there.

Done that many times on RPis or BeagleBones
by Andy1978
Fri Jul 04, 2014 8:20 pm
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

Hello minhdang, I created a github repo: https://github.com/octave-de/octave-rpi-gpio and updated the wiki: http://wiki.octave.org/Rasperry_Pi. The code is as in Jan. 2013 (just the basic stuff). If you need further help or want to help develop the wrapper further, contact me via the github pages. T...
by Andy1978
Sat Jan 26, 2013 8:30 am
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

And rtfm, README: 14.1.2013 Andreas Weber Oct wrapper v0.0.1 around libbcm2835 1.) install octave and liboctave-dev as described on http://wiki.octave.org/Rasperry_Pi 2.) get and compile libbcm2835 from http://www.open.com.au/mikem/bcm2835/ $ wget http://www.open.com.au/mikem/bcm2835/bcm2835-1.16.ta...
by Andy1978
Sat Jan 26, 2013 8:25 am
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

As described on the wiki "liboctave-dev" and I've already explained in previous posts: Do not mess with octave3.2, in your case "octave-header"
by Andy1978
Tue Jan 22, 2013 3:59 pm
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

Anyway, I tried downloading your oct-gpio.tar.gz, but it appears to be empty. Is it still available? Thank you. Hi randomvibe. I've checked the above link and can't see a problem. Its a valid gziped archive. Try on your raspberry pi wget http://www.tech-chat.de/files/oct-gpio.tar.gz tar xzvf oct-gp...
by Andy1978
Mon Jan 14, 2013 3:40 pm
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

I only build a little test to toggle a GPIO from octave. If you are interested I'll upload it to the octave wiki. Please do. Thank you. Hi randomvibe, I just packed my little test: http://www.tech-chat.de/files/oct-gpio.tar.gz untar it and have a look at README. It only implements init, close, set ...
by Andy1978
Thu Jan 10, 2013 10:40 pm
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

Joel_Mckay , Andy1978 , have you interacted with the GPIO pins from Octave code? Sure, you can use mkoctfile from liboctave-dev to build your wrapper around http://www.open.com.au/mikem/bcm2835/. I only build a little test to toggle a GPIO from octave. If you are interested I'll upload it to the oc...
by Andy1978
Thu Jan 10, 2013 7:01 am
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

Current repo for octave in wheezy is v3.6. 3.6.2 as I wrote above You will see many messages similar to the following if you just use apt to install random octave deb packages. sudo apt-get install octave-headers ... octave3.2-headers : Depends: octave3.2 (= 3.2.4-12) ... First: You should not try ...
by Andy1978
Wed Jan 09, 2013 10:15 am
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

Apt-get is the normal ideal way to handle the dependencies, but in this case there are packages for 3 different versions of octave with incompatibilities :shock: . [/code] Dear Joel_Mckay, I've bought a RaspberryPi yesterday and installed octave 3.6.2-5 and octave-control 2.3.52 on Raspbian wheezy ...
by Andy1978
Fri Jan 04, 2013 7:04 pm
Forum: Beginners
Topic: Raspbian- Octave - installing packages
Replies: 25
Views: 14593

Re: Raspbian- Octave - installing packages

The maintainer already build the forge packages for you.
For example octave-control: http://archive.raspbian.org/raspbian/po ... e-control/

So instead using "pkg -forge install ..." on a debian bases system you should use

Code: Select all

aptitude install octave-control
Regards, Andy

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