AN3308 datasheet(33/52 Pages) STMICROELECTRONICS

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AN3308

Click and double click recognition

Doc ID 18198 Rev 1

33/52

8.3.2

TAP_SRC (39h)

Enable interrupt double tap-tap on X axis. Default value: 0

(0: disable interrupt request; 1: enable interrupt request on measured accel. value

higher than preset threshold)

Enable interrupt single tap-tap on X axis. Default value: 0

(0: disable interrupt request; 1: enable interrupt request on measured accel. value

higher than preset threshold)

Table 20.

Truth table

DZ / DY / DX

SZ / Y / X

Click output

000

Single

Double

Single or double

Table 19.

TAP_CFG description (continued)

Table 21.

TAP_SRC register

Dtap

Stap

Sign

Table 22.

TAP_SRC description

Interrupt active. Default value: 0

(0: no interrupt has been generated; 1: one or more interrupts have been

generated)

Dtap

Double tap-tap enable. Default value: 0

(0: double tap-tap detection disable, 1: double tap-tap detection enable)

Stap

Single tap-tap enable. Default value: 0

(0: single tap-tap detection disable, 1: single tap-tap detection enable)

Sign

Tap-tap sign. 0: positive detection, 1: negative detection

Z tap-tap detection. Default value: 0

(0: no interrupt, 1: Z high event has occurred)

Y tap-tap detection. Default value: 0

(0: no interrupt, 1: Y high event has occurred)

X tap-tap detection. Default value: 0

(0: no interrupt, 1: X high event has occurred)

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