[Elphel-support] 答复: 答复: 答复: 答复: 答复: sync stereo with lidar
Winston Zhang
winston.zhang at bst.ai
Wed Dec 12 16:34:01 PST 2018
Ok, We will test and feedback it.
________________________________
-----------------------------------------------------------
Best Regrad!
Yicheng-Zhang
Email: winston.zhang at bst<mailto:winston.zhang at blacksesame.com.cn>.ai
Tel: 18516291005
Black Sesame Technologies (Shanghai) Co., Ltd. www.bst.ai<http://www.bst.ai/>
Rm 1102-1108, Bldg36, No.2777, East Jinxiu Rd, Pudong District, Shanghai, China
发件人： Oleg<mailto:support-list at support.elphel.com>
发送时间： 2018-12-13 03:44
收件人： winston.zhang at bst.ai<mailto:winston.zhang at bst.ai>
抄送： david.zhang at bst.ai<mailto:david.zhang at bst.ai>; qiao.yan at bst.ai<mailto:qiao.yan at bst.ai>; tao.zhang at bst.ai<mailto:tao.zhang at bst.ai>; Qun Gu<mailto:qun.gu at blacksesame.com>; elphel support-list<mailto:support-list at support.elphel.com>
主题： Re: [Elphel-support] 答复: 答复: 答复: 答复: 答复: sync stereo with lidar
Hello,
In the link you used the internal trigger generator is working and is routed out to the sync cable (which is probably self-looped - input and output wires are connected):
Try:
1. Set TRIG_OUT=0x0 to stop internal pulses at the sync cable output:
# old link:
http://192.168.0.9/parsedit.php?sensor_port=0&immediate&TRIG_CONDITION=0x95555&TRIG_OUT=0x66555&TRIG_PERIOD=100000000&TRIG=4
# new link:
http://192.168.0.9/parsedit.php?sensor_port=0&immediate&TRIG_CONDITION=0x95555&TRIG_OUT=0x0&TRIG_PERIOD=100000000&TRIG=4
or
2. If the sync cable inputs and outputs connected. Disconnect the wires from each other and apply your trigger source:
signal or "+" - to Black wire,
ground or "-" - to Green wire.
Please, check the wire colors and pinout here<https://wiki.elphel.com/wiki/103891>.
Let us know if that worked. Thanks. I'll update our docs to make them clear.
Best regards,
Oleg Dzhimiev
Electronics Engineer
phone: +1 801 783 5555 x124
Elphel, Inc.
On Tue, Dec 11, 2018 at 9:04 PM Winston Zhang <winston.zhang at bst.ai<mailto:winston.zhang at bst.ai>> wrote:
Hi, Andrey!
Thany you for your patience to answer our questions!
I have some new questions about external trigger. When I set the trigger parameter as the page http://192.168.0.9/parsedit.php?sensor_port=0&immediate&TRIG_CONDITION=0x95555&TRIG_OUT=0x66555&TRIG_PERIOD=10000000&TRIG=4,<http://192.168.0.9/parsedit.php?sensor_port=0&immediate&TRIG_CONDITION=0x95555&TRIG_OUT=0x66555&TRIG_PERIOD=100000000&TRIG=4,> and I made the trigger board pulsing out the signal(10HZ), I found we could get 10 images. But I stopped the trigger board signal, I also could update the image(10hz). I wanted to konw that how can I test the external trigger signal work? Because when i stop external source trigger signal, it could receive images too.
________________________________
-----------------------------------------------------------
Best Regrad!
Yicheng-Zhang
Email: winston.zhang at bst<mailto:winston.zhang at blacksesame.com.cn>.ai
Tel: 18516291005
Black Sesame Technologies (Shanghai) Co., Ltd. www.bst.ai<http://www.bst.ai/>
Rm 1102-1108, Bldg36, No.2777, East Jinxiu Rd, Pudong District, Shanghai, China
发件人： Oleg<mailto:support-list at support.elphel.com>
发送时间： 2018-09-19 02:38
收件人： david.zhang at bst.ai<mailto:david.zhang at bst.ai>
抄送： winston.zhang at bst.ai<mailto:winston.zhang at bst.ai>; tao.zhang at bst.ai<mailto:tao.zhang at bst.ai>; Qun Gu<mailto:qun.gu at blacksesame.com>; elphel support-list<mailto:support-list at support.elphel.com>
主题： Re: [Elphel-support] 答复: 答复: 答复: 答复: 答复: sync stereo with lidar
Hello,
Here are a couple commands (in linux) that can help to check and sync the system clock:
- Compare PC and camera clock:
~$ ssh root at 192.168.0.9<mailto:root at 192.168.0.9> date;date -u
- Write PC time into camera clock:
~$ ssh root at 192.168.0.9<mailto:root at 192.168.0.9> "date -s @`( date -u +"%s" )` && hwclock -w"
After setting the system clock check if the time survives the reboot. If it does not - then please update the firmware to 20180511<https://wiki.elphel.com/wiki/10393_manual#Firmware.2Fsoftware_update>. There was a bug in the clock driver we had to fix a while ago.
Regards,
Oleg
On Mon, Sep 17, 2018 at 11:27 PM David Zhang <david.zhang at bst.ai<mailto:david.zhang at bst.ai>> wrote:
Hi, Andrey,
We use default configuration(TRIG=4 and TRIG_PERIOD=25000000). Is that OK? And now our situation is there are timestamps in EXIF header. But it is not
the kernel's system time.
e.g. the timestamp in EXIF may be 2018/09/14 but actually system's date is 2018/09/18.
How can i fix it? Thanks.
Best,
David
________________________________
发件人: Elphel Support <support-list at support.elphel.com<mailto:support-list at support.elphel.com>>
发送时间: 2018年9月18日 10:03:19
收件人: Winston Zhang
抄送: Winston Zhang; Tao Zhang; Qun Gu; David Zhang
主题: Re: [Elphel-support] 答复: 答复: 答复: 答复: sync stereo with lidar
Winston,
What trigger settings do you use ( https://wiki.elphel.com/wiki/Trigger_393 )?
Trigger 393 - ElphelWiki - wiki.elphel.com<https://wiki.elphel.com/wiki/Trigger_393>
wiki.elphel.com<http://wiki.elphel.com>
Description. 10389 board is required. The triggering is used for one or several cameras synchronization or setting the frame rate (or fps). The conditions of the trigger can be generated either internally or externally.
Camera channels should be in triggered mode (TRIG=4) and have correct TRIG_PERIOD. Then all channels will be exactly synchronized. If you set TRIG_PERIOD to some "even" number (like exactly 10fps with TRIG_PERIOD=10000000), then timestamps will have all digits but seconds and tenths of a second the same for all frames.
Andrey
---- On Mon, 17 Sep 2018 18:31:26 -0700 <winston.zhang at bst.ai<mailto:winston.zhang at bst.ai>> wrote ----
Hi, Andrey!
I captured some images form camera with the timestamp image name. This timestamp was the same with camera system timestamp. And the other way, each image had its exif information that contained the real timestamp. But this timestamp from exif information was not the same with system timestamp. So can you provided some detials about where was the exif timestamp from. And how did i do can solve this problem.
(i had synchronized the camera system time with the GPS timestamp.)
________________________________
-----------------------------------------------------------
Best Regrad!
Yicheng-Zhang
Email: winston.zhang at bst<mailto:winston.zhang at blacksesame.com.cn>.ai
Tel: 18516291005
Addr: 707 room, 7th floor, building 4th, No.1761, Zhangdong road, Pudong area
发件人： Oleg<mailto:support-list at support.elphel.com>
发送时间： 2018-05-12 06:32
收件人： Winston Zhang<mailto:winston.zhang at blacksesame.com.cn>
抄送： Tao Zhang<mailto:tao.zhang at blacksesame.com.cn>; Qun Gu<mailto:qun.gu at blacksesame.com>; David Zhang<mailto:david.zhang at blacksesame.com.cn>; elphel support-list<mailto:support-list at support.elphel.com>
主题： Re: [Elphel-support] 答复: 答复: 答复: 答复: sync stereo with lidar
Winston,
I could get the info from the 192.168.0.9:2323<http://192.168.0.9:2323>. This web could help me to get some information. But if I tried the http://192.168.0.9:2323/timestamp_name, the timestamp file saved web did not appear. How did I use it?
http://192.168.0.9:2323/pointer_value/img
Try the following:
1. get diagnostics.php<https://git.elphel.com/Elphel/elphel-web-393/blob/master/src/diagnostics/diagnostics.php>
2. copy to 192.168.0.9:/www/pages/
3. In the browser open:
view-source:http://192.168.0.9/diagnostics.php?pointers
You will get xml output similar to this one:
<?xml version='1.0' standalone='yes'?>
<Document>
<camera ip='192.168.0.9'>
<port index='0' sensor='mt9p006, none, none, none' mux='none'>
<timestamps>
...
<ts frame='7290' ts='1526075540.347616' ptr='pointer_value'>1526075540.347616</ts>
...
Take the pointer_value from the last <ts> for a particular port. Don't forget to add "/img" or "/bimg".
If something does not work. Please send me your xml.
Best regards,
Oleg Dzhimiev
Electronics Engineer
phone: +1 801 783 5555 x124
Elphel, Inc.
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