http://forums.leaflabs.com/topic.php?id=46092 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:05:03 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=46092#post-69309 Fri, 04 Oct 2013 22:17:03 +0000 Mike McCauley 69309@http://forums.leaflabs.com/ <p>OK, I have some nice working code now, pushed to <a href="mailto:git@github.com">git@github.com</a>:mikemccauley/libmaple.git </p> http://forums.leaflabs.com/topic.php?id=46092#post-68434 Fri, 04 Oct 2013 17:55:42 +0000 mlundinse 68434@http://forums.leaflabs.com/ <p>Its a good idea, but I would also look into the possibility of using DMA, then<br /> the interrupt must only be serviced at the end of a DMA buffer and not for every transmitted character. </p> http://forums.leaflabs.com/topic.php?id=46092#post-68301 Fri, 04 Oct 2013 17:31:28 +0000 Mike McCauley 68301@http://forums.leaflabs.com/ <p>Hi,<br /> The current implementation of usarts in libmaple git master has an interrupt driven ring buffer for receive, but a busy-wait loop for transmits. It works, but performance is poor (CPU is blocked while tx buffer is not empty)</p> <p>Does anyone else like me think the transmit side should also have a ring buffer and be interrupt driven? Im happy to implement it, but will the developers accept my pull request?</p> <p>Cheers. </p>