Thursday Mar 05, 2015
Tuesday Sep 09, 2014
By Andy Tael-Oracle on Sep 09, 2014
Hello Folks, here is a brief summary of what is coming up at OpenWorld 2014 regarding IoT:
1. Focus On (key sessions) IoT Infrastructure at OpenWorld 2014
2. Focus on (key sessions) IoT Infrastructure at JavaOne 2014
I hope I meet you there!
Wednesday Apr 30, 2014
By Andy Tael-Oracle on Apr 30, 2014
Java ME provides a robust, flexible environment for applications running on embedded and mobile: microcontrollers, sensors, gateways, mobile phones, personal digital assistants (PDAs), TV set-top boxes, printers and more. It includes robust security, built-in network protocols, and support for networked and offline applications. Oracle Java ME Embedded 8 is an implementation of the recently approved Java ME 8 standard, and includes support of alignment with Java SE 8 language features and APIs, an enhanced services-enabled application platform, and the ability to right-size the platform to address a wide range of devices in the Internet of Things. Application development is supported through the Oracle Java ME SDK 8.
So this is what you need to do:
- Download the Java ME 8 SDK
- Download the Java ME Embedded 8
- Check out the Java ME Embedded Documentation and Additional Resources
- Read the Java ME Developer Tool Documentation
- Ask questions at the Java ME Embedded Forum
- Follow @javaembedded
Wednesday Apr 02, 2014
By Andy Tael-Oracle on Apr 02, 2014
Learn How to Plug Into the Internet of Things. A global network of billions of devices sharing data is opening up unprecedented business opportunities. How well positioned is your company to take advantage of this seismic shift? Join Oracle, our partners and customers on Thursday, April 24 to learn how turn the Internet of Things into real business value.
Friday Mar 28, 2014
By Andy Tael-Oracle on Mar 28, 2014
So in preparation for using the Adafruit Ultimate GPS with UART there are some configuration steps that needs to be done. First we need to edit /boot/cmdline.txt (so it doesn't provide a terminal connection by default.
Change the line:
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwaitto:
dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait
Then we need to edit /etc/inittab so the Pi doesn't spawn a login to the serial connection (we need it when connecting the GPS later)
#Spawn a getty on Raspberry Pi serial line T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100to:
#Spawn a getty on Raspberry Pi serial line #T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100
Install GPSD, GPSD is an open source project which provides a daemon which streams GPS data via a TCP socket, allowing you to communicate with a whole host of different GPS devices (not just this one). Just execute:
sudo apt-get install gpsd gpsd-clients python-gps
Now it is time to connect the GPS and test it, but that will be a later post. Stay Tuned!
By Andy Tael-Oracle on Mar 28, 2014
As I am going to use I2C (BMP180) and SPI (DS1722) sensors with my Raspberry Pi (wheezy distribution) I need to enable them. Real easy to do, start by editing the file /etc/modprobe.d/raspi-blacklist.conf and make sure that the lines containing blacklist spi-bcm2708 and blacklist i2c-bcm2708 are commented out
Then edit the /etc/modules file so it contains the following two lines (it may contain more lines): i2c-dev, i2c-bcm2708 and spi-bcm2708.
Execute the command lsmod, and you should see spi_bcm2708 and i2c_bcm2708 in the list
The I2C bus allows multiple devices to be connected to your Raspberry Pi, each with a unique address, that can often be set by changing jumper settings on the module. It is very useful to be able to see which devices are connected to your Pi as a way of making sure everything is working. To be able to do this execute sudo apt-get install python-smbus and sudo apt-get install i2c-tools.
And the last step is to execute sudo apt-get update and sudo apt-get upgrade to get the latest and greatest libraries.
That's it for now, next post should contain some code I hope.
Friday Feb 14, 2014
Wednesday Feb 12, 2014
By Andy Tael-Oracle on Feb 12, 2014
Tuesday Feb 11, 2014
By Andy Tael-Oracle on Feb 11, 2014
Have you wondered what the future of embedded devices looks like?
Have you ever wanted to create your own weather station or design a device to control the lights in your home automatically?
All of these questions will be answered in this practical hands-on course. This course introduces Java developers to the world of embedded devices and the Internet of Things (IoT). Embedded controllers are already a part of our lives. Meters read electric and water usage and send the readings to a central office. Electronic thermostats turn on the heat and air conditioning as required.
This course is free (besides the necessary hardware, which should cost bout $150).
Wednesday Jan 29, 2014
By Andy Tael-Oracle on Jan 29, 2014
NetBeans 8 (Beta) has been released, download it here. Part of the release statement looks like this:
"NetBeans IDE 8.0 Beta provides out-of-the-box code analyzers and editors for working with the latest Java 8 technologies--Java SE 8, Java SE Embedded 8, and Java ME Embedded 8."
And the part that interests me mostly is the Java ME Embedded 8! I have purchased a GPS and a Bosch BMP180 Barometric Pressure/Temperature/Altitude Sensor so I can try out the new DAAPI in Java ME 8! Sample code will be posted soon as well as tips and tricks to get things going.
Time to Code!
Wednesday Oct 23, 2013
By Andy Tael-Oracle on Oct 23, 2013
The course teaches experienced Java SE developers how to design and develop applications using Java ME Embedded 8 EA on a Raspberry Pi with physical devices, including: switches and Light Emitting Diodes (LED); temperature/barometric pressure sensors; Global Positioning System (GPS) sensors; and system interrupt timers. Additional modules include logging, threads, network I/O, file I/O, record management service, push registry, application management services and best practices for headless embedded devices.Sounds like great fun doesn't it? Read more about the course and give us your feedback in this short survey.
Wednesday Oct 02, 2013
By Andy Tael-Oracle on Oct 02, 2013
This is just fantastic news:
"It’s therefore fantastic to be able to announce that we’ve added the official hard-float Oracle Java 7 JDK to our repository. Oracle Java offers significant performance advantages over OpenJDK on ARM platforms, and will expand the range of Java applications that run well on the Pi."
Read more here!
And if you're a current owner of a Rpi how do you install Oracle Java 7 JDK on the RPi? Easy:
sudo apt-get update && \ sudo apt-get install oracle-java7-jdk
Now time to write some cool Java programs on the RPi.
Friday Sep 06, 2013
By Andy Tael-Oracle on Sep 06, 2013
Are you looking to learn about Java Embedded at JavaOne? Click the link and it will give you a long list of things that is happening at JavaOne:
Tuesday Jul 23, 2013
By Andy Tael-Oracle on Jul 23, 2013
This is wonderful for partners to Oracle:
Oracle has introduced the Oracle Java Platform Integrator program to provide partners with the ability to customize Oracle Java Embedded products, including Java SE Embedded, Java ME Embedded, and Java Embedded Client, to reach different device types and market segments. Coupled with the massive Java ecosystem of over 9 million Java developers worldwide, this new program will help enable greater development and deployment flexibility for the IoT.
Read more here.
Friday May 10, 2013
By Andy Tael-Oracle on May 10, 2013
So after upgrading all the JVMs on my laptop I ran into an issue when trying to use the Java ME Embedded 3.3 SDK. I got the following error message:
The solution was easy (after a little digging around in the installation directory of the ME SDK. Open the file called java, it is located in the bin directory and change the path to correct one and bam it works again.
Andy's blog about the world of embedded Java, Oracle Java Cloud Service and my more fun things!
- Freescale FRDM-K64F - Hardware, Software, Firmware and Java ME 8.1
- IoT at Oracle OpenWorld 2014
- Oracle releases Java ME 8 today!
- Learn How to Plug Into the Internet of Things
- Adafruit Ultimate GPS using UART configuration on Raspberry Pi
- I2C and SPI on Raspberry Pi Configuration
- Breaking News - Java ME 8 Early Access #2
- Things needed for the upcoming Oracle Java ME Embedded MOOC
- Develop Java Embedded Applications Using a Raspberry Pi for free (well almost)
- Things are getting really interesting - NetBeans IDE 8.0 Beta