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UART functions for additional runtime configuration an TX buffer flushing (only implemented for cc2538)\n"},"comment":{"url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/comments/265732932","html_url":"https://github.com/RIOT-OS/RIOT/pull/5899#issuecomment-265732932","issue_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/5899","id":265732932,"user":{"login":"haukepetersen","id":620834,"avatar_url":"https://avatars.githubusercontent.com/u/620834?v=3","gravatar_id":"","url":"https://api.github.com/users/haukepetersen","html_url":"https://github.com/haukepetersen","followers_url":"https://api.github.com/users/haukepetersen/followers","following_url":"https://api.github.com/users/haukepetersen/following{/other_user}","gists_url":"https://api.github.com/users/haukepetersen/gists{/gist_id}","starred_url":"https://api.github.com/users/haukepetersen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/haukepetersen/subscriptions","organizations_url":"https://api.github.com/users/haukepetersen/orgs","repos_url":"https://api.github.com/users/haukepetersen/repos","events_url":"https://api.github.com/users/haukepetersen/events{/privacy}","received_events_url":"https://api.github.com/users/haukepetersen/received_events","type":"User","site_admin":false},"created_at":"2016-12-08T12:51:50Z","updated_at":"2016-12-08T12:51:50Z","body":"Oh, I think I should clarify my change of mind: it seems to me it comes down to a trade off between (minor) efficiency gains (though only true if not using DMA) vs synchronization efforts. The reason why I think making the `write` function fully synchronous is, that we don't have the means to call `flush` in every situation where it would be needed. The most prominent example being `lpm` or the new `pm` (#6160) interface -> here we do currently have no hooks that could call 'flush` before putting the node to sleep. By having a fully synchronous UART, this would not even be needed."}}
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