Posts Tagged ‘Java ME’

 

clip_image002In Part 1 of his series on using Java ME 8 to control Internet of Things (IOT) devices–such as LEDs, relays, LCDs, sensors, motors, and switches–connected to a Raspberry Pi, Jose Cruz explained how to work with devices that use a simple general-purpose input/output (GPIO) interface. GPIO devices can be used as either a digital input or digital output, can be disabled or enabled, and can be used to drive interrupt lines. Part 1 explored how to connect and control a flame sensor, a movement sensor, and a motion sensor.

In Part 2 of his series, Jose describes how to connect and control devices that use an inter-integrated circuit bus (I2C) interface, which is a multimaster, multislave, single-ended serial computer bus that  enables you to read or write data beyond just changes in logic states. 

Following Jose’s instructions, you’ll learn how connect a servo driver; a temperature and humidity sensor; a light and object proximity sensor; and a digital compass to the Raspberry Pi. Then, you’ll see how to develop Java ME 8 classes that allow you to gather data from, write data to, and control these devices. The code for the classes is very similar, so once you understand it, you’ll be able to create new classes that control additional I2C devices to create your very own IoT world.  Read the complete article here.

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clip_image001At JavaOne a few weeks ago, Oracle made available the Java ME 8.1 Developer Preview release for the Freescale FRDM-K64F (“Java ME 8.1 in 190 KB RAM”) and announced the upcoming full release of Java ME Embedded 8.1 (press release).

On Monday this week, we followed up as promised and posted the General Availability (GA) releases of Oracle Java ME 8.1 and the Oracle ME SDK 8.1.

Oracle Java ME Embedded 8.1 and ME SDK 8.1 New Features and Enhancements

  • Support for ARM Cortex-M3/-M4 micro-controllers
  • Updated Raspberry Pi support
  • Updated Developer Preview on FRDM-K64 with mbed
  • Improved support for two additional Qualcomm Gobi device families
  • New communication, security, and networking features
  • New support for Eclipse IDE, including major update of the Eclipse MTJ plugin
  • Developer improvements: Tooling over USB, heap analysis, faster communication
  • A number of smaller enhancements and fixes

Java 8: Truly Scalable

With this release, Java ME 8 now fully lives up to its design promise of delivering a feature-rich Java 8 platform that scales from powerful embedded systems all the way down to resource-constrained singe-chip micro-controllers with as little as 128 KB of RAM. Read the complete article here.

WebLogic Partner Community

For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center.

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