MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Uživatelská příručka stáhnout pdf (Strana 480)

100

101

Tar get Preferences

• Select Chip reset to generate a signal that resets the

processor (WDRST signal) and disable the watchdog

interrupt signal (W DIN T signal).

• Select

Raise WD Interrupt to generate a watchdog

interrupt signal (WDINT signal) and disable the reset

processor signal (WDRST signal). This signal can be used

to wake the device from an IDLE or STANDBY low-power

mode.

This parameter corresponds to bit 1 (WDENINT) of the

System Control and Status Register (SCSR).

GPIO[pin#]

Each pin selected for input offers three signal qualiﬁcation types:

•

Sync to SYSCLKOUT — This setting is the default for all pins

at reset. Using this qualiﬁcation type, the input signal is

synchronized to the system clock SYSCLKO U T. The following

ﬁgure shows the input signal measured on each tick of the

system clock, and the resulting output from the qualiﬁer.

• Qualification using 3 samples — This setting requires

three cons ecutive cycles of the same value for the output value

to change . The following ﬁ gure show s that, in the third cycle,

the GPIO v alue changes to

0, but the qualiﬁer o utput is still 1

because it waits for three consecutive cycles of the same GPIO

value. The next three cycles all have a value of

0,andthe

9-88

1 2 ... 475 476 477 478 479 480 481 482 483 484 485 ... 574 575

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MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Uživatelská příručka Strana 480

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