MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guia do Utilizador descarregar pdf (Página 475)

100

101

Targ et Preferences

Suspension mo de

Type of suspension to use when debugging your program

with Code Composer Studio. When your program encounters

a breakpoint, the selected suspension mode determines

whether to perform the program instruction. Available

options are

Hard_abort, Soft_abort,andFree_run.

Hard_abort stops the prog ram immediately . Soft_abort

stops when the current receive or transmit sequence is

complete.

Free_run continues running regardless of the

breakpoint.

SPI_A

The serial peripheral interface parameters you can set for the A

module. These parameters are:

Baud rate factor

To set the Baud rate factor, search for “Baud Rate

Determinat ion” and “SPI Bau d Rate Register (SPIBR R) Bit

Descriptions” in TMS320x28xx, 28xxx DSP Serial Peripheral

Interface (SPI) Reference Guide, Literature Number:

SPRU059, available on the Texas Instruments Web Site.

Clock phase

Select

No_delay or Delay_half_cycle.

Clock polarity

Select

Rising_edge or Falling_edge.

Data bits

Length in bits from

1 to 16 of each transmitted or received

character. For example, if you select

8, the maximum data

that can be transmitted using SPI is

8-1

.Ifyousenddata

greater than this value, the buffer overﬂows.

Enable Loopback

Select this option to enable the loopback function for

self-test and diagnostic purposes only. When this function is

enable d, the Tx pin on a C28x DSP is internally conn ected

9-83

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