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@192.168.0.9 date;date -u - Write PC time into camera clock: > ~$ ssh root@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.zh...@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@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 > 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.zh...@bst.ai > <winston.zh...@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@bst <winston.zh...@blacksesame.com.cn>.ai* > > *Tel: 18516291005* > > *Addr: 707 room, 7th floor, building 4th, No.1761, Zhangdong road, > Pudong area* > > > *发件人：* Oleg <support-list@support.elphel.com> > *发送时间：* 2018-05-12 06:32 > *收件人：* Winston Zhang <winston.zh...@blacksesame.com.cn> > *抄送：* Tao Zhang <tao.zh...@blacksesame.com.cn>; Qun Gu > <qun...@blacksesame.com>; David Zhang <david.zh...@blacksesame.com.cn>; elphel > support-list <support-list@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. 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. > > _______________________________________________ > Support-list mailing list > Support-list@support.elphel.com > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com > > > > > _______________________________________________ > Support-list mailing list > Support-list@support.elphel.com > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com >
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