Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X Datenbogen
Produktcode
DK-TM4C129X
Description
Reset
Type
Name
Bit/Field
Invert Index Pulse
Description
Value
No effect.
0
Inverts the
IDX
input.
1
0
RW
INVI
11
Invert PhB
Description
Value
No effect.
0
Inverts the
PhBn
input.
1
0
RW
INVB
10
Invert PhA
Description
Value
No effect.
0
Inverts the
PhAn
input.
1
0
RW
INVA
9
Predivide Velocity
This field defines the predivider of the input quadrature pulses before
being applied to the QEICOUNT accumulator.
being applied to the QEICOUNT accumulator.
Predivider
Value
÷1
0x0
÷2
0x1
÷4
0x2
÷8
0x3
÷16
0x4
÷32
0x5
÷64
0x6
÷128
0x7
0x0
RW
VELDIV
8:6
Capture Velocity
Description
Value
No effect.
0
Enables capture of the velocity of the quadrature encoder.
1
0
RW
VELEN
5
Reset Mode
Description
Value
The position counter is reset when it reaches the maximum as
defined by the
defined by the
MAXPOS
field in the QEIMAXPOS register.
0
The position counter is reset when the index pulse is captured.
1
0
RW
RESMODE
4
December 13, 2013
2018
Texas Instruments-Advance Information
Quadrature Encoder Interface (QEI)