{"action":"created","issue":{"url":"https://api.github.com/repos/g4klx/MMDVM/issues/43","repository_url":"https://api.github.com/repos/g4klx/MMDVM","labels_url":"https://api.github.com/repos/g4klx/MMDVM/issues/43/labels{/name}","comments_url":"https://api.github.com/repos/g4klx/MMDVM/issues/43/comments","events_url":"https://api.github.com/repos/g4klx/MMDVM/issues/43/events","html_url":"https://github.com/g4klx/MMDVM/issues/43","id":192102289,"number":43,"title":"Teensy 3.6 Support","user":{"login":"phl0","id":7112907,"avatar_url":"https://avatars.githubusercontent.com/u/7112907?v=3","gravatar_id":"","url":"https://api.github.com/users/phl0","html_url":"https://github.com/phl0","followers_url":"https://api.github.com/users/phl0/followers","following_url":"https://api.github.com/users/phl0/following{/other_user}","gists_url":"https://api.github.com/users/phl0/gists{/gist_id}","starred_url":"https://api.github.com/users/phl0/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/phl0/subscriptions","organizations_url":"https://api.github.com/users/phl0/orgs","repos_url":"https://api.github.com/users/phl0/repos","events_url":"https://api.github.com/users/phl0/events{/privacy}","received_events_url":"https://api.github.com/users/phl0/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":46,"created_at":"2016-11-28T19:58:12Z","updated_at":"2016-12-20T20:18:20Z","closed_at":null,"body":"I successfully compiled the MMDVM firmware for a Teensy 3.6 board. However starting MMDVMCal exits with exit code 1 and the MMDVM obviously stops running due to the LED on pin 13 not flashing any more.\r\n\r\n![bildschirmfoto vom 2016-11-28 20-57-57](https://cloud.githubusercontent.com/assets/7112907/20683717/5de14738-b5ad-11e6-8913-a5aeb8ea2fa6.png)\r\n\r\n![bildschirmfoto vom 2016-11-28 20-57-41](https://cloud.githubusercontent.com/assets/7112907/20683713/5a3f3978-b5ad-11e6-97c6-dc81968723fd.png)\r\n\r\nIt seems that the Teensy does not correctly answer to the writeConfig command."},"comment":{"url":"https://api.github.com/repos/g4klx/MMDVM/issues/comments/268347374","html_url":"https://github.com/g4klx/MMDVM/issues/43#issuecomment-268347374","issue_url":"https://api.github.com/repos/g4klx/MMDVM/issues/43","id":268347374,"user":{"login":"g4eml","id":1881884,"avatar_url":"https://avatars.githubusercontent.com/u/1881884?v=3","gravatar_id":"","url":"https://api.github.com/users/g4eml","html_url":"https://github.com/g4eml","followers_url":"https://api.github.com/users/g4eml/followers","following_url":"https://api.github.com/users/g4eml/following{/other_user}","gists_url":"https://api.github.com/users/g4eml/gists{/gist_id}","starred_url":"https://api.github.com/users/g4eml/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/g4eml/subscriptions","organizations_url":"https://api.github.com/users/g4eml/orgs","repos_url":"https://api.github.com/users/g4eml/repos","events_url":"https://api.github.com/users/g4eml/events{/privacy}","received_events_url":"https://api.github.com/users/g4eml/received_events","type":"User","site_admin":false},"created_at":"2016-12-20T20:18:20Z","updated_at":"2016-12-20T20:18:20Z","body":"I modified teensyio.c so that the ADC values were immediately copied back out to the DAC and watched them on a scope. \nWith noise on the Rx line the DAC signals were all max value (3.3V) with occasional spikes down to 1V.\nI then fed in a variable DC voltage to the ADC and confirmed that the it appears to be working but with a reference voltage of about 1.2V instead of 3.3V. \nAny voltage above 1.2V  gives the 4095, the maximum reading.\nAs the centre point of the received audio is 1.65V then that would explain why my teensy is not receiving. \n\nI am now going back to the datasheet to try to see why this is happening. Maybe the internal reference voltage is programmable and has not been set up. \n\nColin. \n\n\n\n\n\nFrom: Florian (DF2ET) \nSent: Tuesday, December 20, 2016 8:50 AM\nTo: g4klx/MMDVM \nCc: g4eml ; Comment \nSubject: Re: [g4klx/MMDVM] Teensy 3.6 Support (#43)\n\nJonathan is right. At least with the internal oscillator (TCXO off) it\nshould work in D-Star more or less right away. I had that running a\nwhile ago.\n\n\n\n—\nYou are receiving this because you commented.\nReply to this email directly, view it on GitHub, or mute the thread.\n"}}
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