DSP Blockset Release Notes

Major Bug Fixes

The following sections describe some of the major DSP Blockset 4.1 bug fixes:

• Real-Time Workshop C Code Generated from DSP Blockset
• Nontunable Block Parameters
• Chirp Block
• Matrix Viewer Block
• Random Source Block
• Stack and Queue Blocks
• Window Function Block

Real-Time Workshop C Code Generated from DSP Blockset

• Real-Time Workshop C code generated from the blockset now uses the sizeof function rather than hard-coding word sizes for nonstandard code generation targets (such as those that do not treat characters as 8-bit bytes).
• The generated C code for most blocks no longer generates compiler warnings for most supported targets.

Nontunable Block Parameters

All nontunable block parameters are now uneditable in the Simulink mask UI during simulations.

Chirp Block

The Chirp block now has correct behavior in bidirectional sweep mode, and correctly interprets target frequency and sweep time parameters.

Matrix Viewer Block

The Matrix Viewer block now displays the color bar.

Random Source Block

The Random Source block seed initialization better supports multiple copies of the block in one Simulink model.

Also, the block no longer sets the seed of the MATLAB random number generator function during block initialization.

Stack and Queue Blocks

The Stack and Queue blocks now correctly handle simultaneously triggered control ports (such as the Push and Pop ports).

Window Function Block

The Window Function block now errors out for non-floating-point inputs to avoid possible segmentation violations.

Changes to Filtering Block Libraries

Upgrading from an Earlier Release