LIS2DH12 datasheet(41/53 Pages) STMICROELECTRONICS

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LIS2DH12

8.18

FIFO_SRC_REG (2Fh)

Table 52. FIFO_SRC_REG description

8.19

INT1_CFG (30h)

The content of this register is loaded at boot.

Table 51. FIFO_SRC_REG register

WTM

OVRN_FIFO

EMPTY

FSS4

FSS3

FSS2

FSS1

FSS0

WTM

WTM bit is set high when FIFO content exceeds watermark level

OVRN_FIFO

OVRN bit is set high when FIFO buffer is full; this means that the FIFO buffer

contains 32 unread samples. At the following ODR a new sample set replaces the

oldest FIFO value. The OVRN bit is set to 0 when the first sample set has been

read

EMPTY

EMPTY flag is set high when all FIFO samples have been read and FIFO is empty

FSS [4:0]

FSS [4:0] field always contains the current number of unread samples stored in the

FIFO buffer. When FIFO is enabled, this value increases at ODR frequency until

the buffer is full, whereas, it decreases every time one sample set is retrieved from

FIFO

Table 53. INT1_CFG register

AOI

ZHIE/

ZLIE

YHIE

YLIE

XHIE

XLIE

Table 54. INT1_CFG description

AOI

And/Or combination of interrupt events. Default value: 0. Refer to Table 55

6-direction detection function enabled. Default value: 0. Refer to Table 55

ZHIE

Enable interrupt generation on Z high event or on direction recognition. Default

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

ZLIE

Enable interrupt generation on Z low event or on direction recognition. Default value:

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

YHIE

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

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

YLIE

Enable interrupt generation on Y low event or on direction recognition. Default value:

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

XHIE

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

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

XLIE

Enable interrupt generation on X low event or on direction recognition. Default value:

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

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