14 Introduction Simulink Embedded Target Introduction The MATLAB link to Code Composer Studio (CCS) is the first layer in allowing MATLAB to communinicate with CCS. A second product, known as the Embedded Target for the TI TMS320C6000 DSP Platform, interfaces through MATLAB SimulinkTM and Real-Time Workshop (RTW), to allow block diagrams created in Simulink to be exported and downloaded directly to the 6711 and 6713 DSK’s. • RTW is responsible for generating ANSI C from a Simulink block diagram • The CCS link allows MATLAB to communicate with Code Composer, and create a CCS project that upon code build produces an .out file that can be downloaded and run on a DSK target For this course, using cut-and-paste Simulink blocks to create real-time DSP applications, would defeat the detailed learning experience this course is all about. Still, being aware of options such as this for rapid prototyping may be of value in future work experiences. ECE 5655/4655 Real-Time DSP 14–1 Chapter 13 • Simulink Embedded Target The Toolbox There are many blockset libraries available for Simulink. Of particular interest here are: • C6000 Target • DSP blockset • Fixed-point block set C6000 Target Blocks 13–2 ECE 5655/4655 Real-Time DSP The Toolbox DSP Blockset ECE 5655/4655 Real-Time DSP 14–3 Chapter 13 • Simulink Embedded Target Fixed-point Blockset Examples A variety of examples com with the SImulink C6000 Target blockset. A automatic gain control example for the C6713 DSK is shown below. 13–4 ECE 5655/4655 Real-Time DSP ECE 5655/4655 Real-Time DSP Reset C6713 DSK ADC Line In C6713 DSK ADC Audio Input Info Pwr Goal Output Pwr Input Power (dB) Output Power (dB) Click "Info" for a full description of the algorithm and detailed instructions. When the generated code has been compiled and linked, double-click "Run" to execute the code and initiate the RTDX transfers. Multiplex Signals M ode l Se ttings DAC C6713 DSK DAC Speaker Output Check Setpoint Value Type Ctrl-B to build using default settings, or double-click "Model Settings" to change model parameters before typing Ctrl-B. How to use this demo: Compute Power AGC feedback compensator Signal In AGC Cont. Product C6713 DSK Automatic Gain Control Run To RTDX To RTDX ochan1 From RTDX From RTDX ichan1 SETPOINT Examples 14–5 13–6 -1 z -1 z Integer Delay Output Pwr 10 u Downsample 1 Convert back to voltage AGC Integer Delay1 AGC Control 2 AGC Cont. 1 Loop Filter FDATool Loop Gain 0.25 Power in dB Signal to dB dB To Sample Setpoint to dB 2 dB Pwr Goal Variance 1 Signal In VAR Chapter 13 • Simulink Embedded Target AGC Detail ECE 5655/4655 Real-Time DSP