LIS3DH datasheet(35/42 Pages) STMICROELECTRONICS

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LIS3DH

Registers description

Doc ID 17530 Rev 1

35/42

Content of this register is loaded at boot.

Write operation at this address is possible only after system boot.

Difference between AOI-6D = ‘01’ and AOI-6D = ‘11’.

AOI-6D = ‘01’ is movement recognition. An interrupt is generate when orientation move from

unknown zone to known zone. The interrupt signal stay for a duration ODR.

AOI-6D = ‘11’ is direction recognition. An interrupt is generate when orientation is inside a

known zone. The interrupt signal stay until orientation is inside the zone.

8.22

INT1_SRC (31h)

ZLIE/

ZDOWNE

Enable interrupt generation on Z low event or on Direction recognition. Default

value: 0 (0: disable interrupt request;1: enable interrupt request)

YHIE/

YUPE

Enable interrupt generation on Y high event or on Direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request.)

YLIE/

YDOWNE

Enable interrupt generation on Y low event or on Direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request.)

XHIE/

XUPE

Enable interrupt generation on X high event or on Direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request.)

XLIE/XDOWNE Enable interrupt generation on X low event or on Direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request.)

Table 48.

Interrupt mode

AOI

Interrupt mode

OR combination of interrupt events

6 direction movement recognition

AND combination of interrupt events

6 direction position recognition

Table 47.

INT1_CFG description

Table 49.

INT1_SRC register

YHYLXHXL

Table 50.

INT1_SRC description

Interrupt active. Default value: 0

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

Z high. Default value: 0

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

Z low. Default value: 0

(0: no interrupt; 1: Z Low event has occurred)

Y high. Default value: 0

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

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