MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Uživatelská příručka stáhnout pdf (Strana 481)

100

101

Targ et Preferences

output from the qua liﬁer change s to 0 immediately after the

third consecutive value is rece iv ed .

• Qualificati

on using 6 samples

— This setting requires six

consecutive

cycles of the same G PIO input value for the output

from the qua

liﬁer to change. In the f ollowing ﬁgure, the glitch

A has no effe

ct on the output signal. When the glitch occurs,

the countin

g begins, but the next measurement is low again, so

the count i

s ignored. The output signal does not change until

six consec

utive samples of the high signal are measured.

Qualiﬁcation sam pling period prescaler

Visible only w hen an appropriate setting for Qualiﬁcation

type for GP IO [pin#] is selected. The qualiﬁcation

sampling period prescaler, with possible v alu es of

0 to 255,

calculates the frequency of the qualiﬁcation samples or the

number of system clock ticks per sample. The formula for

calculating the qualiﬁcation sampling frequency is:

9-89

1 2 ... 476 477 478 479 480 481 482 483 484 485 486 ... 574 575

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MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Uživatelská příručka Strana 481

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