{"action":"created","issue":{"url":"https://api.github.com/repos/betaflight/betaflight/issues/1635","repository_url":"https://api.github.com/repos/betaflight/betaflight","labels_url":"https://api.github.com/repos/betaflight/betaflight/issues/1635/labels{/name}","comments_url":"https://api.github.com/repos/betaflight/betaflight/issues/1635/comments","events_url":"https://api.github.com/repos/betaflight/betaflight/issues/1635/events","html_url":"https://github.com/betaflight/betaflight/issues/1635","id":191104792,"number":1635,"title":"Smartport Telemetry still not working on F4 targets?","user":{"login":"HaseebNain","id":9420015,"avatar_url":"https://avatars.githubusercontent.com/u/9420015?v=3","gravatar_id":"","url":"https://api.github.com/users/HaseebNain","html_url":"https://github.com/HaseebNain","followers_url":"https://api.github.com/users/HaseebNain/followers","following_url":"https://api.github.com/users/HaseebNain/following{/other_user}","gists_url":"https://api.github.com/users/HaseebNain/gists{/gist_id}","starred_url":"https://api.github.com/users/HaseebNain/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/HaseebNain/subscriptions","organizations_url":"https://api.github.com/users/HaseebNain/orgs","repos_url":"https://api.github.com/users/HaseebNain/repos","events_url":"https://api.github.com/users/HaseebNain/events{/privacy}","received_events_url":"https://api.github.com/users/HaseebNain/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":8,"created_at":"2016-11-22T19:41:15Z","updated_at":"2016-11-25T15:09:58Z","closed_at":null,"body":"I have been working on getting smartport working on F4 targets. \r\n\r\nBecause the F4 does not natively support UART inverting, I used the taulabs inverting circuit on UART3 in an attempt to get some sort of S.PORT connection. \r\n\r\n![image](https://cloud.githubusercontent.com/assets/9420015/20537462/7f941aac-b0aa-11e6-80ce-5e84e7debe5a.png)\r\n\r\nI have attempted to turn off inversion \"telemetryConfig->telemetry_inversion\" in Smartport.c and used the inversion circuit instead. This did not seem to work with the REVO (making sure to point the Firmware to use UART3 for Smartport telemetry). \r\n\r\nAfter trying the inversion circuit I went ahead and followed @blckmn's Smartport tutorial  [Smartport, the FrSky X4RS, and Betaflight](https://blck.mn/2016/06/smartport-the-frsky-x4rs-and-betaflight/). This method worked and made me wonder why the inversion circuit itself wasn't working. \r\n\r\nIs there possibly an issue with the F4 and the original porting of the F3 code that may have been overlooked? Perhaps still using a pseudo one wire smartport and not accepting the bidirectional communication through the RX?\r\n\r\nAre there any F4 boards that have working SmartPort telemetry? I know that the Revolt is saying they will be able to support SmartPort through software in RF1 but are unable to support it at the moment.\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/betaflight/betaflight/issues/comments/262975647","html_url":"https://github.com/betaflight/betaflight/issues/1635#issuecomment-262975647","issue_url":"https://api.github.com/repos/betaflight/betaflight/issues/1635","id":262975647,"user":{"login":"jflyper","id":14850998,"avatar_url":"https://avatars.githubusercontent.com/u/14850998?v=3","gravatar_id":"","url":"https://api.github.com/users/jflyper","html_url":"https://github.com/jflyper","followers_url":"https://api.github.com/users/jflyper/followers","following_url":"https://api.github.com/users/jflyper/following{/other_user}","gists_url":"https://api.github.com/users/jflyper/gists{/gist_id}","starred_url":"https://api.github.com/users/jflyper/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jflyper/subscriptions","organizations_url":"https://api.github.com/users/jflyper/orgs","repos_url":"https://api.github.com/users/jflyper/repos","events_url":"https://api.github.com/users/jflyper/events{/privacy}","received_events_url":"https://api.github.com/users/jflyper/received_events","type":"User","site_admin":false},"created_at":"2016-11-25T15:09:58Z","updated_at":"2016-11-25T15:09:58Z","body":"@slawek89 That sounds like a support question. Please come to the RCGroups' thread. Which board are you using?\r\n"}}
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