Search found 24 matches
- Mon Aug 17, 2015 4:34 pm
- Forum: Troubleshooting
- Topic: rpi-update fails with gzip error
- Replies: 17
- Views: 2508
Re: rpi-update fails with gzip error
Thanks that clears it up!
- Mon Aug 17, 2015 4:27 pm
- Forum: Troubleshooting
- Topic: rpi-update fails with gzip error
- Replies: 17
- Views: 2508
Re: rpi-update fails with gzip error
Aye, i'm new to the unix world so just grasping the surface, just happy the programming is similar enough.RaTTuS wrote:you may be amazed how many commands you run are actually scripts ;-p
- Mon Aug 17, 2015 4:25 pm
- Forum: Troubleshooting
- Topic: rpi-update fails with gzip error
- Replies: 17
- Views: 2508
Re: rpi-update fails with gzip error
Read the code. If you can't do that, you shouldn't ever run rpi-update. I actually didn't realize this was a script and not an executable, it's funny you suggest that as i was reading up the source on github. But my question wouldn't be answered by reading the code, my question was can this affect ...
- Mon Aug 17, 2015 1:53 pm
- Forum: Troubleshooting
- Topic: rpi-update fails with gzip error
- Replies: 17
- Views: 2508
Re: rpi-update fails with gzip error
What exactly does this do (will this only affect rpi-update or will it affect anything else?)DougieLawson wrote:If you have a need to run rpi-update which is very much not recommended.
SKIP_WARNING=1 rpi-update
- Mon Aug 17, 2015 12:56 pm
- Forum: Troubleshooting
- Topic: rpi-update fails with gzip error
- Replies: 17
- Views: 2508
Re: rpi-update fails with gzip error
aye it works thanks!KLL wrote:i think that too, there might be a optional zip file name as parameter,ronan.thibaudau wrote:is it trying to download Something and complaining about gzip's Stream
but as -h --help and man not works? who knows
and pls tell us if that pipe trick works
- Mon Aug 17, 2015 12:50 pm
- Forum: Troubleshooting
- Topic: rpi-update fails with gzip error
- Replies: 17
- Views: 2508
Re: rpi-update fails with gzip error
try: echo 'y' | sudo rpi-update i can not do because its up to date already, but the reaction is definitely different from sudo rpi-update Y or -y ... Hmm actually you're right but i'm still confused about the error message, why is it trying to download Something and complaining about gzip's Stream...
- Mon Aug 17, 2015 12:40 pm
- Forum: Troubleshooting
- Topic: rpi-update fails with gzip error
- Replies: 17
- Views: 2508
Re: rpi-update fails with gzip error
sudo rpi-update -y do not do that! it not works like the "apt-get install -y" command, also "man rpi-update" or "rpi-update --help" ... will fail pls use sudo rpi-update and later when the question comes answer "y" manually This has Nothing to do with my question at all, and i can't do y manually i...
- Mon Aug 17, 2015 11:42 am
- Forum: Troubleshooting
- Topic: rpi-update fails with gzip error
- Replies: 17
- Views: 2508
rpi-update fails with gzip error
I can't seem to get any of my PIs to update, i'm fairly sure this isn't a network issue on my end as this happens on raspberries both at my hope (fiber gigabit) and at our production facility many miles away. Those aren't raspberries from the same batch nor even running the same iso. All of them are...
- Wed Jan 14, 2015 4:52 am
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
In a way it is, there are a lot of other différences but those have to stay privatePaul Webster wrote:Interesting topic.
Looks like the objective is something like this http://ir-ltd.net
with RPi being a lot cheaper than DSLR cameras - allowing more capture devices for lower cost.
- Wed Jan 14, 2015 1:56 am
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
I may go with speaking to broadcom but i'm starting to wonder if i maybe i should just speak to the camera makers instead and make a custom minimalist (non RPI based) board that only supports predefined capture and transmit... OmniVision may be just as hard to get support from as Broadcom. At least...
- Mon Jan 12, 2015 5:38 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
Well , check out the default apps of the foundation (written in C). Steal some code from there and set all automatic modes to manual. Measure the latency etc. Getting into the GPU might be a technical , but much more a business and legal problem. You would propably have less problems if you're part...
- Mon Jan 12, 2015 4:17 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
I will be direct about this : You have a serious application in mind. Why don't you spend 70 € for a proper Raspi + Camera setup or 200 - 300 € for a Compute Module DevKit and start coding right away to see what is possible ? Brush up your C or Python skills , get the latest copy of PiCamera and Ra...
- Mon Jan 12, 2015 4:01 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
At your volumes i would go some length to somehow directly speak to someone at the foundation. Via EMail might not work well , but perhaps going to a distributor and mentioning your possible order should somehow get the cogs in their sales team to turn (I might be naiive though) and give you the ri...
- Mon Jan 12, 2015 3:43 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
It's not possible to rewrite the GPU software, that's years of work. I'd suggest firing the capture from a GPIO - capture is ready to go, waiting on a GPIO change. You could signal all the devices at the same time or sequenced. Doing it via ethernet adds extra jitter, as there is no guaranteed resp...
- Mon Jan 12, 2015 2:53 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
The setup of the sensors just isn't going to lend itself to your use case, even if suitable access could be provided. If the camera is streaming, then generally it makes sense to finish the current frame to keep state machines happy. The 5MPix frame takes approx 66ms to read out. Therefore with mor...
- Mon Jan 12, 2015 1:32 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
If you want RAW then you need to grab a JPEG to which the RAW is attached. Running the data through the ISP takes practically no time (its mostly dedicated HW and as above, can 1080p30, or full resolution at 15fps, which is the max speed of the sensor anyway). However overheads that you cannot do a...
- Sun Jan 11, 2015 11:33 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
Why? I don't get what you are trying to gain from bypassing the ISP. The firmware can only deliver raw bayer pattern data by adding these to a jpeg image. It is independent from the processing and only depends on the settings for shutter speed and the (calculated) analog gain. So you can just take ...
- Sun Jan 11, 2015 10:32 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
So i'm back after a while working on other parts of the project and with more questions: If i understand right from an application the typical pipeline is The application => (optional) mmal => openmax => VCHIQ => GPU => camera I'd like to bypass as much as i can, i understand i can't bypass the GPU ...
- Mon Oct 06, 2014 12:13 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
The camera apps use an API called MMAL , which sadly has no that much documentation and is only used by Broadcom : http://www.jvcref.com/files/PI/documentation/html/ You can use another API called OpenMAX instead which used by competitiors and open-source projects , too. https://www.khronos.org/ope...
- Mon Oct 06, 2014 8:24 am
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
The sensor will default to gain of 1, and I think you can fix the value, probably by setting the ISO IIRC. So that should be possible. TBH, in decent lighting, it will probably work out as one anyway. The system will use analog gain in preference to digital when it needs to boost the brightness of ...
- Mon Oct 06, 2014 7:39 am
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
Can you elaborate on the gain control? Is there a way to "set it" instead of calculating it? I'm going to have fixed cameras with fixed lighting conditions and am fine with the camera being left always open, would it be possible to bypass that step too ?
- Mon Oct 06, 2014 7:14 am
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
Do you want raw Bayer data (from the sensor), or raw bitmap data (like YUV)? There is no way of getting the bayer data only, that would require changes to the GPU code where all the hard work is done. However, there is practically no overhead of getting the JPG data as well - it's all done in HW so...
- Sun Oct 05, 2014 7:17 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Re: Retrieve camera input (preferably programatically) very
You need to start the camera before time, then fire the capture when you need it. Use the capture on signal option. Override the callback function that saves to media to save to memory instead. That should improve things. There is no option for RAW only. But you could use something raspiYUV to get ...
- Sun Oct 05, 2014 5:22 pm
- Forum: Camera board
- Topic: Retrieve camera input (preferably programatically) very fast
- Replies: 32
- Views: 4679
Retrieve camera input (preferably programatically) very fast
I'm looking for a solution getting raw (i don't care for jpeg at all, so i'd rather have "just" raw instead of raw+jpeg and whatever time spent creating and encoding the jpeg) images as fast as possible. I have no interest in video, just raw stills but i need to be able to have as short as possible ...