http://forums.leaflabs.com/topic.php?id=13461 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:17:59 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=13461#post-28649 Sat, 31 Aug 2013 11:47:57 +0000 mlundinse 28649@http://forums.leaflabs.com/ <p>I will do more tests, it should also be interesting to check how this affects the time that the Maple is wasting while waiting for a free USB transmit buffer. In many cases that might be more interesting than maximum throughput. </p> http://forums.leaflabs.com/topic.php?id=13461#post-28647 Sat, 31 Aug 2013 11:29:10 +0000 gbulmer 28647@http://forums.leaflabs.com/ <p>mlundinse - <em>"For a quick succesion of fairly small writes this can boost USB serial throughput from about 1.2Mb/s to 4.8Mb/s ..."</em></p> <p>Brilliant!<br /> 4x, is a huge improvement.<br /> Very well done, and thank you for sharing.</p> <p>Have you run any tests on full-USB-packet speed? </p> http://forums.leaflabs.com/topic.php?id=13461#post-28635 Fri, 30 Aug 2013 12:32:36 +0000 mlundinse 28635@http://forums.leaflabs.com/ <p>I have written some code that bufferes serial writes while the previous package is<br /> being transmitted. For a quick succesion of fairly small writes this can boost<br /> USB serial throughput from about 1.2Mb/s to 4.8Mb/s when writing to and displaing data in a serial console on a Mac.</p> <p><a href="https://github.com/mlu/libmaple/blob/master/libmaple/usb/stm32f1/usb_cdcacm.c" rel="nofollow">https://github.com/mlu/libmaple/blob/master/libmaple/usb/stm32f1/usb_cdcacm.c</a></p> <p>It has been tested and seems stable so far.</p> <p>Regards<br /> Magnus </p>