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by 6by9
Wed Apr 24, 2019 2:22 pm
Forum: HATs and other add-ons
Topic: A cheap way to get HDMI input to Raspberry Pi
Replies: 10
Views: 257

Re: A cheap way to get HDMI input to Raspberry Pi

This is a cheap way to get HDMI input to Raspberry Pi.The main chip of the module is Toshiba TC358743XBG. It's usage is exactly the same as the ordinary Raspberry Pi camera.https://www.youtube.com/watch?v=lYQuocM7VPI Why the video mentions 1080p/25fps? Is more fps possible? This is because of some ...
by 6by9
Wed Apr 24, 2019 1:28 pm
Forum: HATs and other add-ons
Topic: A cheap way to get HDMI input to Raspberry Pi
Replies: 10
Views: 257

Re: A cheap way to get HDMI input to Raspberry Pi

This is a cheap way to get HDMI input to Raspberry Pi.The main chip of the module is Toshiba TC358743XBG. It's usage is exactly the same as the ordinary Raspberry Pi camera.https://www.youtube.com/watch?v=lYQuocM7VPI Why the video mentions 1080p/25fps? Is more fps possible? This is because of some ...
by 6by9
Tue Apr 23, 2019 12:01 pm
Forum: HATs and other add-ons
Topic: A cheap way to get HDMI input to Raspberry Pi
Replies: 10
Views: 257

Re: A cheap way to get HDMI input to Raspberry Pi

As you're using the same handle here as YouTube, I assume you are the person manufacturing. Please be very aware that using raspivid etc with this chip is very limited (720P only) and is NOT SUPPORTED. raspivid will even print that every time you run it with this chip attached. Having said that, the...
by 6by9
Sat Apr 20, 2019 3:22 pm
Forum: Camera board
Topic: Video: Time Integration
Replies: 2
Views: 105

Re: Video: Time Integration

The sensor will integrate over the exposure period, which may be up to 11ms if you are running at 90fps. It will not integrate over more than that. You can request a shorter exposure period as Hermann has said. The other issue you may not be aware of is that the sensor does not integrate all lines a...
by 6by9
Sat Apr 20, 2019 11:21 am
Forum: Graphics, sound and multimedia
Topic: HDMI to CSI-2 via TC358743 on kernel 4.1
Replies: 544
Views: 162178

Re: HDMI to CSI-2 via TC358743 on kernel 4.1

"v4l2-ctl --query-dv-timings" asks the hardware what it can see on the input. It does not adopt those settings.

"v4l2-ctl --set-dv-bt-timings query" will set the dv timings to be the same as those detected.
by 6by9
Thu Apr 18, 2019 1:39 pm
Forum: Camera board
Topic: Camera only running for 35 mins
Replies: 4
Views: 122

Re: Camera only running for 35 mins

If it has been updated, then

Code: Select all

sudo apt update
sudo apt upgrade

Otherwise see
viewtopic.php?f=63&t=237974#p1454466 for build steps.
by 6by9
Thu Apr 18, 2019 11:54 am
Forum: Camera board
Topic: Camera only running for 35 mins
Replies: 4
Views: 122

Re: Camera only running for 35 mins

Please update.

There was a bug in raspistill that a microsecond count was being handled as a microsecond timer was being handled as a 32bit value. 2^32 microseconds is approx 35mins.
I believe the fix is now in the raspbian repos, otherwise it is fairly easy to download and build the userland repo.
by 6by9
Wed Apr 17, 2019 9:39 pm
Forum: Compute Module
Topic: I2C-0: CM3L connected to Sony IMX219 Camera
Replies: 9
Views: 227

Re: I2C-0: CM3L connected to Sony IMX219 Camera

mamor wrote:
Wed Apr 17, 2019 9:17 pm
Thank you!!! This helps us alot and help us proceed with our project.
Btw, what is a 'CAMERA_0_UNICAM_PORT'
It selects between using cam0/csi0 or cam1/csi1 for the csi image data.
by 6by9
Wed Apr 17, 2019 7:58 pm
Forum: Graphics, sound and multimedia
Topic: could omxplayer display non rectangular area ?
Replies: 2
Views: 76

Re: could omxplayer display non rectangular area ?

You can alter the rectangular window onto which omxplayer will render using - - win, but not trapezoidal. You can probably pass it through the 3d block to apply that sort of transformation, but that isn't standard functionality with omxplayer.
by 6by9
Wed Apr 17, 2019 7:53 pm
Forum: Compute Module
Topic: I2C-0: CM3L connected to Sony IMX219 Camera
Replies: 9
Views: 227

Re: I2C-0: CM3L connected to Sony IMX219 Camera

[email protected]_0_I2C_PORT {
Needs to be internal and 1 if you wish it to use i2c-1.
by 6by9
Wed Apr 17, 2019 7:16 pm
Forum: Graphics, sound and multimedia
Topic: HDMI to CSI-2 via TC358743 on kernel 4.1
Replies: 544
Views: 162178

Re: HDMI to CSI-2 via TC358743 on kernel 4.1

There is no resizing available in the pipe. Whatever is detected/set as the dv timings is what will be produced - you can not change the width/height from what the source produces. If necessary then alter the edid to make vga the only advertised mode, but that may then mess up other bits of your med...
by 6by9
Wed Apr 17, 2019 11:04 am
Forum: OpenMAX
Topic: Non sequential timestamps causing premature EOS flag
Replies: 5
Views: 183

Re: Non sequential timestamps causing premature EOS flag

Sorry, I'm out of the office all week.
I'd need a full test case that can be easily built (ie make, cmake, or provided script) to be really digging into it.
I'd suggest that you provide a timestamp (last pts + 1) rather than relying on time unknown flag.
by 6by9
Wed Apr 17, 2019 7:16 am
Forum: Compute Module
Topic: I2C-0: CM3L connected to Sony IMX219 Camera
Replies: 9
Views: 227

Re: I2C-0: CM3L connected to Sony IMX219 Camera

Hello: I have a Compute Module 3 (CM3L) that use i2c-0 to connect to the Sony IMX219. Here are some questions: 1. Is it possible to connect several slave devices on the same i2c line (i2c-0) as the camera? My tests show that the camera (Sony IMX219) periodically outputs data on the same i2c line (i...
by 6by9
Tue Apr 16, 2019 12:57 pm
Forum: Camera board
Topic: Why no 4-lane CSI on the Zero?
Replies: 2
Views: 113

Re: Why no 4-lane CSI on the Zero?

Purely down to pcb routing. The Zero is already a pretty busy board before trying to get those 4 extra traces through.
by 6by9
Tue Apr 16, 2019 9:00 am
Forum: Camera board
Topic: Disabling lens shading
Replies: 3
Views: 118

Re: Disabling lens shading

by 6by9
Mon Apr 15, 2019 6:56 am
Forum: Camera board
Topic: MMAL cropping
Replies: 5
Views: 165

Re: MMAL cropping

The calculations are all buried in the firmware. It'll first take the sensor mode and centre crop it to match your output aspect ratio. There is no way to access any of the pixels cropped in this step. It then takes the proportions defined by PARAMETER_INPUT_CROP to crop any part out of that image, ...
by 6by9
Fri Apr 12, 2019 6:15 pm
Forum: Camera board
Topic: Camera dropping frames, any advice?
Replies: 9
Views: 191

Re: Camera dropping frames, any advice?

Iirc the gpu will drop frames if unrecoverable errors have been detected on the csi2 bus. I seem to recall it can cope with single bit errors per line, but not double bit ones. What sort of artefacts are you seeing? If it is the colours suddenly going purple part way through a frame then it is almos...
by 6by9
Fri Apr 12, 2019 6:57 am
Forum: Camera board
Topic: Camera dropping frames, any advice?
Replies: 9
Views: 191

Re: Camera dropping frames, any advice?

Having - w 640 - h480 will choose the most appropriate mode, which will be the 2x2 binned full fov mode (1296x972 or 1640x1232). Modes 6 and 7 will be excluded as they can't meet the framerate requested. If you suspect the sd card, then use - o /dev/null - pts timestamps.txt to discard the recording...
by 6by9
Thu Apr 11, 2019 4:26 pm
Forum: General discussion
Topic: raspistill crashes every 35 minutes
Replies: 4
Views: 146

Re: raspistill crashes every 35 minutes

https://github.com/raspberrypi/userland/commit/7cbfbd38d9824535164f93a1d32c81a33a00ca31 - 12 Dec 2018 I would have expected the Raspbian repos to have been updated more recently than that, but otherwise build if for yourself. git clone https://github.com/raspberrypi/userland cd userland sudo apt ins...
by 6by9
Thu Apr 11, 2019 3:31 pm
Forum: General discussion
Topic: raspistill crashes every 35 minutes
Replies: 4
Views: 146

Re: raspistill crashes every 35 minutes

What version of raspistill are you running? There was a bug that the delay calculation overflowed leading to a very long wait.
https://github.com/raspberrypi/userland/pull/535
by 6by9
Wed Apr 10, 2019 3:09 pm
Forum: Compute Module
Topic: I got thermal paste on my board
Replies: 7
Views: 230

Re: I got thermal paste on my board

rpdom wrote:
Wed Apr 10, 2019 2:28 pm
6by9 wrote:
Wed Apr 10, 2019 2:15 pm
PhilE wrote:
Wed Apr 10, 2019 12:32 pm
IPA is safe enough that some people consume it by the pint.
Irish Pale Ale by the pint maybe.
I dunno about Irish. Usually IPA is India Pale Ale (not that I drink it. I leave that to the missus).
:oops: Brain fart on my part. Yes, Indian Pale Ale. (I knew Irish didn't sounds quite right).
by 6by9
Wed Apr 10, 2019 2:15 pm
Forum: Compute Module
Topic: I got thermal paste on my board
Replies: 7
Views: 230

Re: I got thermal paste on my board

PhilE wrote:
Wed Apr 10, 2019 12:32 pm
IPA is safe enough that some people consume it by the pint.
Irish Pale Ale by the pint maybe.
Isopropyl alcohol, less so. (PLEASE do not go drinking isopropyl alcohol!)
by 6by9
Wed Apr 10, 2019 2:11 pm
Forum: General discussion
Topic: Universal TV and AC IR Remote Library
Replies: 5
Views: 110

Re: Universal TV and AC IR Remote Library

Thank, You So much. But It doesn't Have MI TV :( :cry: Then use irrecord to record your remote - http://lirc.org/html/irrecord.html Also be aware that manufacturers will often use the same code between their TV models, therefore a config for a Manufacturer ABC123 may also work for Manufacturer ABC5...

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