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Linux Kernel
3.7.1
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Linux Kernel
3.7.1
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#include <lis3lv02d.h>
Data Fields | |
| unsigned char | click_flags |
| unsigned char | click_thresh_x |
| unsigned char | click_thresh_y |
| unsigned char | click_thresh_z |
| unsigned char | click_time_limit |
| unsigned char | click_latency |
| unsigned char | click_window |
| unsigned char | irq_cfg |
| unsigned char | irq_flags1 |
| unsigned char | irq_flags2 |
| unsigned char | duration1 |
| unsigned char | duration2 |
| unsigned char | wakeup_flags |
| unsigned char | wakeup_thresh |
| unsigned char | wakeup_flags2 |
| unsigned char | wakeup_thresh2 |
| unsigned char | hipass_ctrl |
| s8 | axis_x |
| s8 | axis_y |
| s8 | axis_z |
| u16 | driver_features |
| int | default_rate |
| int(* | setup_resources )(void) |
| int(* | release_resources )(void) |
| s16 | st_min_limits [3] |
| s16 | st_max_limits [3] |
| int | irq2 |
struct lis3lv02d_platform_data - lis3 chip family platform data : Click detection unit configuration : Click detection unit x axis threshold : Click detection unit y axis threshold : Click detection unit z axis threshold : Click detection unit time parameter : Click detection unit latency parameter : Click detection unit window parameter : On chip irq source and type configuration (click / data available / wake up, open drain, polarity) : Additional irq triggering flags for irq channel 0 : Additional irq triggering flags for irq channel 1 : Wake up unit 1 duration parameter : Wake up unit 2 duration parameter : Wake up unit 1 flags : Wake up unit 1 threshold value : Wake up unit 2 flags : Wake up unit 2 threshold value : High pass filter control (enable / disable, cut off frequency) : Sensor orientation remapping for x-axis : Sensor orientation remapping for y-axis : Sensor orientation remapping for z-axis : Enable bits for different features. Disabled by default : Default sampling rate. 0 means reset default : Interrupt line setup call back function : Interrupt line release call back function [3]: Selftest acceptance minimum values [3]: Selftest acceptance maximum values : Irq line 2 number
Platform data is used to setup the sensor chip. Meaning of the different chip features can be found from the data sheet. It is publicly available at www.st.com web pages. Currently the platform data is used only for the 8 bit device. The 8 bit device has two wake up / free fall detection units and click detection unit. There are plenty of ways to configure the chip which makes is quite hard to explain deeper meaning of the fields here. Behaviour of the detection blocks varies heavily depending on the configuration. For example, interrupt detection block can use high pass filtered data which makes it react to the changes in the acceleration. Irq_flags can be used to enable interrupt detection on the both edges. With proper chip configuration this produces interrupt when some trigger starts and when it goes away.
Definition at line 50 of file lis3lv02d.h.
| s8 axis_x |
Definition at line 113 of file lis3lv02d.h.
| s8 axis_y |
Definition at line 114 of file lis3lv02d.h.
| s8 axis_z |
Definition at line 115 of file lis3lv02d.h.
| unsigned char click_flags |
Definition at line 60 of file lis3lv02d.h.
| unsigned char click_latency |
Definition at line 65 of file lis3lv02d.h.
| unsigned char click_thresh_x |
Definition at line 61 of file lis3lv02d.h.
| unsigned char click_thresh_y |
Definition at line 62 of file lis3lv02d.h.
| unsigned char click_thresh_z |
Definition at line 63 of file lis3lv02d.h.
| unsigned char click_time_limit |
Definition at line 64 of file lis3lv02d.h.
| unsigned char click_window |
Definition at line 66 of file lis3lv02d.h.
| int default_rate |
Definition at line 118 of file lis3lv02d.h.
| u16 driver_features |
Definition at line 117 of file lis3lv02d.h.
| unsigned char duration1 |
Definition at line 87 of file lis3lv02d.h.
| unsigned char duration2 |
Definition at line 88 of file lis3lv02d.h.
| unsigned char hipass_ctrl |
Definition at line 105 of file lis3lv02d.h.
| int irq2 |
Definition at line 124 of file lis3lv02d.h.
Definition at line 84 of file lis3lv02d.h.
| unsigned char irq_flags1 |
Definition at line 85 of file lis3lv02d.h.
| unsigned char irq_flags2 |
Definition at line 86 of file lis3lv02d.h.
Definition at line 120 of file lis3lv02d.h.
Definition at line 119 of file lis3lv02d.h.
| s16 st_max_limits[3] |
Definition at line 123 of file lis3lv02d.h.
| s16 st_min_limits[3] |
Definition at line 122 of file lis3lv02d.h.
| unsigned char wakeup_flags |
Definition at line 95 of file lis3lv02d.h.
| unsigned char wakeup_flags2 |
Definition at line 97 of file lis3lv02d.h.
| unsigned char wakeup_thresh |
Definition at line 96 of file lis3lv02d.h.
| unsigned char wakeup_thresh2 |
Definition at line 98 of file lis3lv02d.h.
1.8.2