-
Notifications
You must be signed in to change notification settings - Fork 0
/
FXOS8700-FreeFall-Demo.spin2
125 lines (95 loc) · 4.65 KB
/
FXOS8700-FreeFall-Demo.spin2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
{
----------------------------------------------------------------------------------------------------
Filename: FXOS8700-FreeFall-Demo.spin2
Description: Demo of the FXOS8700 driver
* Free-fall detection functionality
Author: Jesse Burt
Started: Nov 20, 2021
Updated: Jul 10, 2024
Copyright (c) 2024 - See end of file for terms of use.
----------------------------------------------------------------------------------------------------
}
CON
_clkfreq = cfg._clkfreq_def
_xtlfreq = cfg._xtlfreq
#include "core.con.click.spin2"
' -- User-modifiable constants
CLICK_BASE = 16 ' MikroE Click board base I/O pin (multiple of 16)
'--
OBJ
cfg: "boardcfg.p2eval"
{ MikroE Click boards (change CLICK_BASE above) }
'sensor: "sensor.imu.6dof.fxos8700" | SCL=SCL_PIN, SDA=SDA_PIN, I2C_FREQ=400_000, I2C_ADDR=%11
{ custom I/O settings }
sensor: "sensor.imu.6dof.fxos8700" | SCL=0, SDA=1, I2C_FREQ=400_000, I2C_ADDR=%11, RST_PIN=-1
ser: "com.serial.terminal.ansi" | SER_BAUD=2_000_000
VAR
long _isr_stack[50] ' stack for ISR core
long _intflag ' interrupt flag
PUB main() | intsource, temp
setup()
sensor.preset_freefall() ' default settings, but enable
' sensors, set scale factors,
' and free-fall parameters
ser.pos_xy(0, 5)
ser.str(@"Sensor stable ")
' The demo continuously displays the current accelerometer data.
' When the sensor detects free-fall, a message is displayed and
' is cleared after the user presses a key
' The preset for free-fall detection sets a free-fall threshold of
' 0.315g's for a minimum time of 30ms. This can be tuned using
' sensor.freefall_thresh() and sensor.freefall_time():
sensor.freefall_thresh(0_315000) ' 0.315g's
sensor.freefall_time(30_000) ' 30_000us/30ms
repeat
ser.pos_xy(0, 3)
show_accel_data() ' show accel data
if ( _intflag ) ' interrupt triggered
intsource := sensor.accel_int()
if ( intsource & sensor.INT_FFALL ) ' free-fall event
temp := sensor.in_freefall() ' clear the free-fall interrupt
ser.pos_xy(0, 5)
ser.strln(@"Sensor in free-fall!")
ser.str(@"Press any key to reset")
ser.getchar() ' wait for keypress
ser.pos_x(0)
ser.clear_line()
ser.pos_xy(0, 5)
ser.str(@"Sensor stable ")
if ( ser.getchar_noblock() == "c") ' press the 'c' key in the demo
cal_accel() ' to calibrate sensor offsets
PRI cog_isr()
' Interrupt service routine
pinf(INT1) ' INT1 as input
repeat
if (pinr(INT1) == 0) ' wait for INT1 (active low)
_intflag := 1 ' set flag
elseif (pinr(INT1) == 1) ' now wait for it to clear
_intflag := 0 ' clear flag
PUB setup()
ser.start()
ser.clear()
ser.strln(@"Serial terminal started")
if ( sensor.start() )
ser.strln(@"FXOS8700 driver started")
else
ser.strln(@"FXOS8700 driver failed to start - halting")
repeat
cogspin(NEWCOG, cog_isr(), @_isr_stack) ' start ISR in another core
#include "acceldemo.common.spin2h"
DAT
{
Copyright 2024 Jesse Burt
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
}