{"action":"created","issue":{"url":"https://api.github.com/repos/akeshet/Cicero-Word-Generator/issues/26","repository_url":"https://api.github.com/repos/akeshet/Cicero-Word-Generator","labels_url":"https://api.github.com/repos/akeshet/Cicero-Word-Generator/issues/26/labels{/name}","comments_url":"https://api.github.com/repos/akeshet/Cicero-Word-Generator/issues/26/comments","events_url":"https://api.github.com/repos/akeshet/Cicero-Word-Generator/issues/26/events","html_url":"https://github.com/akeshet/Cicero-Word-Generator/issues/26","id":295526426,"number":26,"title":"FPGA-retrigger : hold for several seconds","user":{"login":"martino35","id":36033844,"avatar_url":"https://avatars0.githubusercontent.com/u/36033844?v=4","gravatar_id":"","url":"https://api.github.com/users/martino35","html_url":"https://github.com/martino35","followers_url":"https://api.github.com/users/martino35/followers","following_url":"https://api.github.com/users/martino35/following{/other_user}","gists_url":"https://api.github.com/users/martino35/gists{/gist_id}","starred_url":"https://api.github.com/users/martino35/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/martino35/subscriptions","organizations_url":"https://api.github.com/users/martino35/orgs","repos_url":"https://api.github.com/users/martino35/repos","events_url":"https://api.github.com/users/martino35/events{/privacy}","received_events_url":"https://api.github.com/users/martino35/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2018-02-08T14:12:32Z","updated_at":"2018-02-10T07:21:03Z","closed_at":null,"author_association":"NONE","body":"Is it possible to hold a step for several seconds before receiving a retrigger signal ?"},"comment":{"url":"https://api.github.com/repos/akeshet/Cicero-Word-Generator/issues/comments/364632412","html_url":"https://github.com/akeshet/Cicero-Word-Generator/issues/26#issuecomment-364632412","issue_url":"https://api.github.com/repos/akeshet/Cicero-Word-Generator/issues/26","id":364632412,"user":{"login":"Xiaoql","id":8318975,"avatar_url":"https://avatars0.githubusercontent.com/u/8318975?v=4","gravatar_id":"","url":"https://api.github.com/users/Xiaoql","html_url":"https://github.com/Xiaoql","followers_url":"https://api.github.com/users/Xiaoql/followers","following_url":"https://api.github.com/users/Xiaoql/following{/other_user}","gists_url":"https://api.github.com/users/Xiaoql/gists{/gist_id}","starred_url":"https://api.github.com/users/Xiaoql/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Xiaoql/subscriptions","organizations_url":"https://api.github.com/users/Xiaoql/orgs","repos_url":"https://api.github.com/users/Xiaoql/repos","events_url":"https://api.github.com/users/Xiaoql/events{/privacy}","received_events_url":"https://api.github.com/users/Xiaoql/received_events","type":"User","site_admin":false},"created_at":"2018-02-10T07:21:03Z","updated_at":"2018-02-10T07:21:03Z","author_association":"NONE","body":"Hi Martin,\n\nWe have met the similar problem to yours. We've tried to hold a step for\ndozens of seconds. Above ~50s the sequence will output incorrectly.  We\nfound it's due to the limit of the Int32 during the generation of the\nvariable timebase buffers. For a 40MHz FPGA clock, the upper bound is\n(2^31-1)*25ns~53.6s. One may upgrade Int32 to 64bit integers or simply copy\na 50s timestep so we can hold for a longer time which is enough for most of\nthe experiments.  Besides, there is another similar limit when coping with\nPulses. The Int32 will limit the total sequence length. Here we expand int\nto long integers.\n\nI hope this will help you.\n\nBest regards,\n\n--------------------------------------------------------------------------------------------------------------------\n郑永光\n\n\n\n\n*（Zheng  Yong-Guang） QPQI, HFNL, USTC,No.96 Jinzhai Rd. , Hefei,\nAnhui,230026, P. R. ChinaMobile : 0086-13063453720Email :\nyonggzheng@gmail.com <yonggzheng@gmail.com>*\n\n2018-02-09 20:18 GMT+08:00 martino35 <notifications@github.com>:\n\n> Hello,\n>\n> Thank you very much for your feedback.\n> I have a strange behaviours when the \"hold-then-retrigger\" option is\n> enabled.\n>\n> First, in some cases, the sequence bugs after the first iteration. I did\n> not clearly identify when it happens but it seems to depend on the\n> following step duration and the time resolution of the step. The \"event\n> log\" message is : \"At least 1 daqMx task generated a different number of\n> samples from the expected number\".\n>\n> Secondly, in other cases the duration of the following step is affected by\n> the \"hold timeout\" and sometimes it is even skipped.\n>\n> Finally, Cicero keeps running the sequence as usual while the\n> \"hold-then-retrigger\" option is enabled. The total duration of the sequence\n> is not modified, and it seems what is displayed on Cicero is delayed\n> compared to what the sequence actually executes...\n>\n> Many thanks in advance for your assistance.\n>\n> Best regards\n>\n>\n> Martin RABAULT\n> PhD Student\n> Laboratoire Photonique, Numérique & Nanosciences (LP2N)\n> IOGS, CNRS & Université Bordeaux 1 (UMR5298)\n>\n> I n s titu t d'Optique d'Aquitaine\n> Rue F rançoi s Mitterrand\n> 33400 T alen ce (Franc e)\n> Tel : +33 (0)6 3 8 83 37 84\n>\n> ----- Mail original -----\n>\n> De: \"t1mur\" <notifications@github.com>\n> À: \"akeshet/Cicero-Word-Generator\" <Cicero-Word-Generator@\n> noreply.github.com>\n> Cc: \"martino35\" <martin.rabault@institutoptique.fr>, \"Author\" <\n> author@noreply.github.com>\n> Envoyé: Vendredi 9 Février 2018 03:05:42\n> Objet: Re: [akeshet/Cicero-Word-Generator] FPGA-retrigger : hold for\n> several seconds (#26)\n>\n> Yep...it holds as long as you want.\n>\n> Timur\n>\n> On Thu, Feb 8, 2018 at 9:12 AM, martino35 <notifications@github.com>\n> wrote:\n>\n> > Is it possible to hold a step for several seconds before receiving a\n> > retrigger signal ?\n> >\n> > —\n> > You are receiving this because you are subscribed to this thread.\n> > Reply to this email directly, view it on GitHub\n> > <https://github.com/akeshet/Cicero-Word-Generator/issues/26>, or mute\n> the\n> > thread\n> > <https://github.com/notifications/unsubscribe-auth/\n> AAwy7C5ctWR3RKrwp5qioQdPp3SJmPD3ks5tSwDQgaJpZM4R-aaN>\n> > .\n> >\n>\n>\n> —\n> You are receiving this because you authored the thread.\n> Reply to this email directly, view it on GitHub , or mute the thread .\n>\n>\n> —\n> You are receiving this because you are subscribed to this thread.\n> Reply to this email directly, view it on GitHub\n> <https://github.com/akeshet/Cicero-Word-Generator/issues/26#issuecomment-364418856>,\n> or mute the thread\n> <https://github.com/notifications/unsubscribe-auth/AH7v_7eFnuAuiYfcZV_5Nh8i8yMrXRcRks5tTDeYgaJpZM4R-aaN>\n> .\n>\n"}}
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