Another possible approach could be use clojurescript to a nodejs target. >From some cursory googling, there do seem to be node modules like https://github.com/kelly/node-i2c which offer I2C support. And I believe you might also get a better startup time.
On Wed, Sep 4, 2013 at 8:35 PM, Jeremy Wright <wright...@gmail.com> wrote: > I decided to start with the BeagleBone Black as the embedded controller, > partly because of the low cost ($45) and partly because I have one on hand. > So, the first thing I need to do is make sure that I can get the I2C > interface to work from Clojure. > > Gregg Harrington's post might work as a starting point: > http://www.greggharrington.com/articles/beaglebone-i2c-java-adapter > > I'm assuming that I can use Java interop in Clojure to do the same thing. > I have a Melexis MLX90614 I2C temperature sensor laying around already, so > I'll try to get data from it with the BeagleBone/Linux/Java/Clojure stack > first. If that works I can try something more complex. > > Here's a good (and quick) explanation of I2C (and SPI) for anyone not > familiar with it: http://quick2wire.com/articles/i2c-and-spi/ > > On Monday, September 2, 2013 2:16:43 PM UTC-4, Jeremy Wright wrote: >> >> Thanks for the great information nakkaya. You've worked on some very cool >> things. >> >> About the Java friendly micros - I mentioned Systronix, but it looks like >> that community and product line may be dormant or even abandoned. There >> haven't been any posts to their Google Groups or many of their forums for >> at least a year. >> >> What about using the built-in I2C interface on the BeagleBone/BeagleBoard >> to handle the I/O? For example, something like this >> product<http://www.robotshop.com/seeedstudio-grove-i2c-motor-driver.html?utm_source=google&utm_medium=base&utm_campaign=jos>from >> Robot Shop. As you mentioned, you're still offloading the real-time >> work onto another microcontroller (ATmega8L), but by using I2C bus devices >> you can expand your control system as needed without an Arduino. Would >> there be any disadvantages to doing this? >> >> On Saturday, August 31, 2013 11:13:59 PM UTC-4, Jeremy Wright wrote: >>> >>> I recently watched Carin Meier's OSCON talk The Joy of Flying Robots >>> with Clojure <http://www.youtube.com/watch?v=Ty9QDqV-_Ak> and it made >>> me wonder about Clojure on embedded systems. A quick search on this list >>> didn't turn up much so I thought I'd ask. How much work has been done with >>> Clojure on either Java friendly microcontroller systems (i.e. >>> Systronix<http://www.systronix.com/>), >>> or on something like a Beaglebone or Beagleboard? I'm very new to Clojure, >>> so I don't yet understand the challenges that Clojure would face trying to >>> run on a system that may not support all the JVM's features. >>> >>> Any thoughts on this? Any links you can give me on what's been/being >>> done? >>> >>> Thanks. >>> >> -- > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
