FBDK on Raspberry Pi

For those of you who didn't already know, the FBDK runs "as is" on the Raspberry Pi 2 under the Raspbian "wheezy" OS, which comes with the Java 8 JDK "out of the box". Below is a partial screenshot . Note the X2Y2 and X2Y2_FBD tabs, which I used to check out the Java compilation.

Matrix Framework Upgrade

The Matrix Framework has been significantly upgraded:

• The internal structure of the MATRIX data type has been changed from Vector<float[]> to float[][] with internal methods for dynamic resizing.
• A new M_OPS FB type with expanded functionality replaces the former M_COLS FB type.
• A new data type M_OP is used to enumerate the functionality provided by the new M_OPS FB type.
• Row and column indices and lengths are now restricted to the values {0..255} of the USINT data type to correspond to the single-octet elements used for this purpose in the ASN.1 encoding.
• Matrix inversion is now performed using the Product Form of the Inverse (PFI). The PFI column pivot operation is also directly supported by the M_OPS FB type, which makes it potentially useful in the solution of linear programming optimization problems.
• The OUT_MATRIX FB type is now capable of resizing and redisplaying itself when a REQ event is received, so the IVAL, ROWS and COLS inputs have been eliminated from this FB type, and no table is displayed initially until the first REQ event is received.
• The TEST_MCOLS system configuration has been updated to M_OPS_DEMO to demonstrate all the operations possible on the new M_OPS FB type. 
• The TEST_MATRIX system configuration has been renamed to the more descriptive MATRIX_DEMO.

PUBLISH/SUBSCRIBE in Applets

PUBLISH and SUBSCRIBE have been upgraded to switch automatically to local multicast channels when their environment does not support UDP communication, e.g., in Applets. See the PUBLISH_0 documentation in the net folder and the CODEC_TEST and CODEC_TEST2 examples in the ita folder of the FB Navigator.

PUBLISH/SUBSCRIBE Update

The implementation of PUBLISH and SUBSCRIBE has been updated to ensure that all data transfer can occur within a single Ethernet packet using UDP over IPv4. For details, see www.holobloc.com/doc/fb/rt/net/pubsub.htm and http://www.holobloc.com/doc/ita/s3.htm#3.5.

Enhanced RADIO_N

The functionality of the RADIO_N FB type has been enhanced:

• The occurrence of an INIT+ event will cause the current set of radio buttons (if any) to be replaced with a new set of buttons and initial selection (OUT) as specified by the LABELS and IN inputs, respectively.
• The occurrence of an INIT- event will delete the current set of buttons, and the QO and OUT values will be set to false and 0, respectively.

Copy and Paste Service Sequences

You can now copy and paste service sequences in the element navigation tree of the FBEditor. This is documented under the SIFBs heading of the FBDK 2 How To page.

Metal Look and Feel

To ensure cross-platform consistency, the Look and Feel (LAF) of the FBEditor has been restricted to the Java "Metal" CrossPlatformLookAndFeel. Accordingly, the "lookAndFeel" entry in the Preferences dialog has been removed. This has been checked in both Windows 8.1 with the Oracle Java 7 runtime, and Ubuntu 14.04 LTS with the openjdk7 runtime. It has also been checked with the Java applets used in the FB Navigator in both Google Chrome on Windows 8.1 and Firefox with the icedTea plug-in on Ubuntu 14.04 LTS.