LIS2DH datasheet(42/50 Pages) STMICROELECTRONICS

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Registers Description

LIS2DH

42/49

Doc ID 022516 Rev 1

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 untill orientation is inside the zone.

7.24

INT2_SRC (35h)

XHIE

Enable interrupt generation on X high event. Default value: 0

(0: disable interrupt request;

1: enable interrupt request on measured accel. value higher than preset threshold)

XLIE

Enable interrupt generation on X low event. Default value: 0

(0: disable interrupt request;

1: enable interrupt request on measured accel. value lower than preset threshold)

Table 60.

Interrupt mode

AOI

Interrupt mode

OR combination of interrupt events

6 direction movement recognition

AND combination of interrupt events

6 direction position recognition

Table 59.

INT2_CFG description (continued)

Table 61.

INT2_SRC register

YHYLXHXL

Table 62.

INT2_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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