LeafLabs Garden » Topic: SPI Documentation

LeafLabs Garden » Topic: SPI Documentation http://forums.leaflabs.com/topic.php?id=46 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:14:59 +0000 http://bbpress.org/?v=1.0.2 <![CDATA[Search]]> q http://forums.leaflabs.com/search.php poslathian on "SPI Documentation" http://forums.leaflabs.com/topic.php?id=46#post-218 Tue, 08 Jun 2010 10:21:12 +0000 poslathian 218@http://forums.leaflabs.com/ shouldnt toggling chip select be part of the spi.send()? also, star, could you give more info on the type errors? was that from the ide? stars on "SPI Documentation" http://forums.leaflabs.com/topic.php?id=46#post-211 Sun, 06 Jun 2010 19:43:47 +0000 stars 211@http://forums.leaflabs.com/ Yep, this compiles & uploads fine. I was getting some errors that said something about uint8 and uint32 being unrecognized types, that disappeared after I include libmaple. This does not seem to cause those errors. perry on "SPI Documentation" http://forums.leaflabs.com/topic.php?id=46#post-207 Sat, 05 Jun 2010 20:34:44 +0000 perry 207@http://forums.leaflabs.com/ yo star, The documentation needs to get cleaned up, you shouldn't need to include anything. Can you try this sketch and see if the SPI works for you? <pre><code>#define CS 10 byte buf[] = "Hello world!"; HardwareSPI spi1(1); void setup() { /* Set up chip select as output */ pinMode(CS, OUTPUT); /* CS is usually active low, so initialize it high */ digitalWrite(CS, HIGH); /* Initialize SPI */ spi1.begin(SPI_4_5MHZ, LSBFIRST, 0); } void loop() { /* Send message */ digitalWrite(CS, LOW); spi1.send(buf, sizeof buf); digitalWrite(CS,HIGH); delay(1000); }</code></pre> Let me know if this doesn't work for you. BTW, we'll add this to the documentation, but there's also another form of the HardwareSPI constructor that sets up the SPI at the following default values: speed: 1.125 MHZ endianness: MSB SPI Mode: 0 You can call it just by doing spi1.begin() stars on "SPI Documentation" http://forums.leaflabs.com/topic.php?id=46#post-204 Fri, 04 Jun 2010 22:15:37 +0000 stars 204@http://forums.leaflabs.com/ Hi ho! Looks like libmaple.h needs to be included to do SPI stuff -- perhaps either HardwareSPI.h should require it, or the documentation at <a href="http://leaflabs.com/docs/spi" rel="nofollow">http://leaflabs.com/docs/spi</a> could use a comment?