{"action":"created","issue":{"url":"https://api.github.com/repos/CANopenNode/CANopenNode/issues/57","repository_url":"https://api.github.com/repos/CANopenNode/CANopenNode","labels_url":"https://api.github.com/repos/CANopenNode/CANopenNode/issues/57/labels{/name}","comments_url":"https://api.github.com/repos/CANopenNode/CANopenNode/issues/57/comments","events_url":"https://api.github.com/repos/CANopenNode/CANopenNode/issues/57/events","html_url":"https://github.com/CANopenNode/CANopenNode/issues/57","id":256932759,"number":57,"title":"GPL License Questions","user":{"login":"xoduddk123","id":10510127,"avatar_url":"https://avatars3.githubusercontent.com/u/10510127?v=4","gravatar_id":"","url":"https://api.github.com/users/xoduddk123","html_url":"https://github.com/xoduddk123","followers_url":"https://api.github.com/users/xoduddk123/followers","following_url":"https://api.github.com/users/xoduddk123/following{/other_user}","gists_url":"https://api.github.com/users/xoduddk123/gists{/gist_id}","starred_url":"https://api.github.com/users/xoduddk123/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/xoduddk123/subscriptions","organizations_url":"https://api.github.com/users/xoduddk123/orgs","repos_url":"https://api.github.com/users/xoduddk123/repos","events_url":"https://api.github.com/users/xoduddk123/events{/privacy}","received_events_url":"https://api.github.com/users/xoduddk123/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2017-09-12T06:35:16Z","updated_at":"2017-09-25T09:51:13Z","closed_at":"2017-09-25T09:51:13Z","author_association":"NONE","body":"My working environment is Linux.\r\nI tested CANopen using CANopenSocket's canopend. It worked well.\r\nI created shared memory in canopend and tried to exchange PDO data with other programs.\r\n\r\nI know that CANopenNode is a [GPL linking exception](https://github.com/CANopenNode/CANopenNode#gpl-linking-exception).\r\nHowever, CANopenSocket is a generic [GPL v2.](https://github.com/CANopenNode/CANopenSocket#license)\r\n\r\nI tested with [canopend](https://github.com/CANopenNode/CANopenSocket/tree/master/canopend) and tried to use shared memory, but gave up because it was GPL v2.\r\nSo I tried to use the GPL linking exception [CANopenNode/CANopenNode/example/main.c](https://github.com/CANopenNode/CANopenNode/blob/master/example/main.c).\r\nAfter analyzing the source, I found that the [CANopenNode/CANopenSocket/canopend/src/main.c](https://github.com/CANopenNode/CANopenSocket/blob/master/canopend/src/main.c) and CANopenNode stacks were very similar.\r\nBoth CANopenNode/CANopenNode/example/main.c and  CANopenNode/CANopenSocket/canopend/src/main.c both use the stack of CANopenNode.\r\n\r\nBoth are thought of as a kind of daemon using CANopenNode.\r\nThis part confuses me.\r\n\r\n1. CANopenNode is a GPL linking exception, and canopend is GPL v2 intentionally?\r\n2. Can I refer to canopend's source when modifying CANopenNode/CANopenNode/example/main.c?\r\n\r\nI am a newbie in connection with the GPL license.\r\n\r\nI tried to find the mailing list but could not find it.\r\nIs it a question to ask here?\r\n\r\nI'm sorry I do not have enough English."},"comment":{"url":"https://api.github.com/repos/CANopenNode/CANopenNode/issues/comments/331832716","html_url":"https://github.com/CANopenNode/CANopenNode/issues/57#issuecomment-331832716","issue_url":"https://api.github.com/repos/CANopenNode/CANopenNode/issues/57","id":331832716,"user":{"login":"xoduddk123","id":10510127,"avatar_url":"https://avatars3.githubusercontent.com/u/10510127?v=4","gravatar_id":"","url":"https://api.github.com/users/xoduddk123","html_url":"https://github.com/xoduddk123","followers_url":"https://api.github.com/users/xoduddk123/followers","following_url":"https://api.github.com/users/xoduddk123/following{/other_user}","gists_url":"https://api.github.com/users/xoduddk123/gists{/gist_id}","starred_url":"https://api.github.com/users/xoduddk123/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/xoduddk123/subscriptions","organizations_url":"https://api.github.com/users/xoduddk123/orgs","repos_url":"https://api.github.com/users/xoduddk123/repos","events_url":"https://api.github.com/users/xoduddk123/events{/privacy}","received_events_url":"https://api.github.com/users/xoduddk123/received_events","type":"User","site_admin":false},"created_at":"2017-09-25T09:51:13Z","updated_at":"2017-09-25T09:51:13Z","author_association":"NONE","body":"Thank you.\r\nIt has helped a lot.\r\nI will use the CANopenNode stack to clearly distinguish between CANopenNode and the application."}}
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