Texas Instruments MSP50C6xx manual TI-TALKS Example Code, Getting Started

TI-TALKS Example Code

6.3 TI-TALKS Example Code

The TI-TALKS code contains the four vocoders (MELP, CELP, ADPCM, and LPC) and demonstrates how to use the interrupts to scan the keys and flash the LEDs. An LCD driver module is also included.

TI-TALKS should be used as a starting point for code development. Updates to the vocoders and other modules are sent out by Texas Instruments as necessary.

Please contact the TI speech applications group (email: Speak2Me@list.ti.com) for the latest version of the TI-TALKS example code.

Getting Started

Connect the MSP scan port (the small grey metal box) to the PC and to the speech development board. Ensure that the scan port and the development board are powered on (the red LED and the green LED on the scan port are both illuminated) before attempting to start the code development tool.

Click on Start, go to Programs – EMUC6xx and click on MSP50C6xx Code Development icon. To open a project click on Project – New Project and select the desired project file. e.g.,

C:\614\PROJECTS\TI–TALKS604\TI60OBJ.RPJ.

Note that this is an example for TI-TALKS code version 604. The file extension for the project file is RPJ.

Click on Project – Build to assemble and link the constituent files of the project. Then click Debug – Eprom Programming and select Blank Check + Program to burn the code onto a P614 device. Alternatively, press F3 then Enter.

Set the breakpoint at the _main label. To do this click on the blue magnifying glass icon at the top of the screen, then from the Symbol list choose _main. Click OK and the Program Window will display the label and the surrounding code. The line of code at _main – MOV R7,STACK – is highlighted in cyan. Set the breakpoint by moving the mouse to this line, holding the SHIFT key and clicking the right mouse button.

Click on Init – Init All to reset the P614. All the values in the RAM window should turn blue and should be zero (0000).

To run the program, click on the yellow lightning/black centipede (Run Internal) icon at the end of the tool bar. The program should halt at the _main label. All the values in the CPU window should be blue and zero apart from PC, STAT, DP, RZF and ZF.

To continue, click on the Run Internal icon again. A bugle call is synthesized in CELP and then the program loops round continuously.

6-8