Posted on June 01, 2017 at 15:39I've got my LIS2DH12 configured as follows:
TEMP_CFG_REG
TEMP_EN0x11
CTRL_REG1
ODR1
LPEN0
ZEN1
YEN1
XEN1
CTRL_REG2
HPM0
HPCF0
FDS0
HPCLICK0
HP_IA10
HP_IA20
CTRL_REG3
I1_CLICK0
I1_IA10
I1_IA20
I1_ZYXDA0
I1_WTM1
I1_OVERRUN0
CTRL_REG4
BDU1
BLE0
FS0
HR1
ST0
CTRL_REG5
BOOT0
FIFO_EN1
LIR_INT10
D4D_INT10
LIR_INT20
D4D_INT20
CTRL_REG6
I2_CLICK0
I2_IA10
I2_IA20
I2_BOOT0
I2_ACT0
INT_POLARITY1
REFERENCE
REF0
FIFO_CTRL_REG
FM1
TR0
FTH1
INT1_CFG
AOI1
6D0
ZHIE0
ZLIE0
YHIE0
YLIE0
XHIE0
XLIE0
INT1_THS
THS1
INT1_DURATION
D0
INT2_CFG
AOI1
6D0
ZHIE0
ZLIE0
YHIE0
YLIE0
XHIE0
XLIE0
INT2_THS
THS0
INT2_DURATION
D0
CLICK_CFG
ZD0
ZS0
YD0
YS0
XD0
XS0
CLICK_THS
LIR_CLICK0
THS0
TIME_LIMIT
TLI0
TIME_LATENCY
TLA0
TIME_WINDOW
TW0
ACT_DUR
ACTD0
After configuration, the registers look like this:
whoAmI 33
tor 1
tda 1
sdoPuDisc 0
tempEn 1
odr 1
lpen 0
zEn 1
yEn 1
xEn 1
hpm 0
hpcf 0
fds 0
hpclick 0
hpIa1 0
hpIa2 0
i1Click 0
iaIa1 0
iaIa2 0
i1Zyxda 0
i1wtm 1
i1Overrun 0
bdu 1
ble 0
fs 0
hr 1
st 0
sim 0
boot 0
fifoEn 1
lirInt1 0
d4dInt1 0
lirInt2 0
d4dInt2 0
i2Click 0
i2Ia1 0
i2Ia2 0
i2Boot 0
i2Act 0
intPolarity 1
reference 0
fm 1
tr 0
fth 1
wtm 0
ovrnFifo 1
empty 0
fifoFss 1
aoiInt1 1
sixdInt1 0
zhieInt1 0
zlieInt1 0
yhieInt1 0
ylieInt1 0
xhieInt1 0
xlieInt1 0
int1Ths 1
int1Duration 0
aoiInt2 1
sixdInt2 0
zhieInt2 0
zlieInt2 0
yhieInt2 0
ylieInt2 0
xhieInt2 0
xlieInt2 0
int2Ths 0
int2Duration 0
x: -32640, y: 0, z: -32640
Every second, I get and service an interrupt (INT 1). Here's what I find (lowercase = not set (0) , UPPERCASE = set (1), bitnames followed by: value indicate values read):
outTemp: 0
INT1_SRC: ia zh zl yh yl xh xl
INT2_SRC: ia zh zl yh yl xh xl
CLICK_SRC: ia dclick sclick sign z y x
STATUS_REG_AUX: TOR TDA
STATUS_REG: ZYXOR ZOR YOR XOR ZYXDA ZDA YDA XDA
FIFO_SRC_REG: WTM ovrn_fifo empty
FSS: 2
x: -32640, y: 0, z: -32640
x: -32640, y: 0, z: -32640
outTemp: 0
As you can see, I read and output the x-, y-, and z-axis values, along with the temperature. Unfortunately, they never change, no matter how I orient the board the device is mounted on. Has you seen this before or have an idea of what I might be doing wrong? I know I'm communicating properly with the device, because WHO_AMI_I comes back as 33.
