http://forums.leaflabs.com/topic.php?id=1069 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:21:17 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1069#post-6601 Sun, 25 Sep 2011 18:03:07 +0000 mikep 6601@http://forums.leaflabs.com/ <p>If you want to connect the Maple's USART1/2 to a computer via USB and not use the Maple's SerialUSB functionality, you'd need a "USB -&gt; Serial TTL" adapter, something like this:</p> <p><a href="http://shop.moderndevice.com/products/bub_ii" rel="nofollow">http://shop.moderndevice.com/products/bub_ii</a><br /> or this:<br /> <a href="http://www.sparkfun.com/products/718" rel="nofollow">http://www.sparkfun.com/products/718</a></p> <p>Just make sure that the adapter supports 3.3V logic level. </p> http://forums.leaflabs.com/topic.php?id=1069#post-6598 Sun, 25 Sep 2011 16:56:09 +0000 gbulmer 6598@http://forums.leaflabs.com/ <blockquote><p>Does this means, I can't use serial without another adapter?</p></blockquote> <p>You're right, it can't use the serial for communication, unless you have a computer which has a serial interface. </p> http://forums.leaflabs.com/topic.php?id=1069#post-6594 Sun, 25 Sep 2011 15:34:17 +0000 gulu2065 6594@http://forums.leaflabs.com/ <p>gbulmer,<br /> Thanks a lot!<br /> I see this here<br /> <a href="http://leaflabs.com/docs/lang/api/serial.html#lang-serial" rel="nofollow">http://leaflabs.com/docs/lang/api/serial.html#lang-serial</a><br /> Unlike the Arduino, none of the Maple’s serial ports is connected to the USB port on the Maple board. If you want to communicate using the built-in USB port, use SerialUSB instead. You will need an additional USB-to-serial adapter to communicate between a USART and your computer.</p> <p>Does this means, I can't use serial without another adapter? </p> http://forums.leaflabs.com/topic.php?id=1069#post-6592 Sun, 25 Sep 2011 15:13:44 +0000 gbulmer 6592@http://forums.leaflabs.com/ <p>One USART is upto 4.5Mbit/second, so, say 450KByte/second. I think the other two are 2.25Mbit/second.</p> <p>(full disclosure: I am not a member of LeafLabs staff) </p> http://forums.leaflabs.com/topic.php?id=1069#post-6579 Sun, 25 Sep 2011 02:46:13 +0000 gulu2065 6579@http://forums.leaflabs.com/ <p>I see that on RM008, the SDIO do not have SPI compatible communication mode<br /> Does that means I can't use it, or I could use it through DMA? </p> http://forums.leaflabs.com/topic.php?id=1069#post-6578 Sun, 25 Sep 2011 02:25:22 +0000 gulu2065 6578@http://forums.leaflabs.com/ <p>Or, does anyone know, if i use usart, how fast would that be? will it enough? </p> http://forums.leaflabs.com/topic.php?id=1069#post-6576 Sun, 25 Sep 2011 00:37:43 +0000 gulu2065 6576@http://forums.leaflabs.com/ <p>I want to test a chip and I was using SPI and USB serial to send data to the computer.<br /> However, as the USB serial speed is limited and it will overflow.<br /> How could I interface it with a SD card or some other kind of memory and store data in it? and Then I read data and send to PC.<br /> I need to store at least 16224 bits data. </p>