LM3S818 Luminary Micro, Inc, LM3S818 Datasheet - Page 355

• Manufacturer Part Number: LM3S818
• Description: Lm3s818 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

February 6, 2007
Reset
Reset
Type
Type
Bit/Field
31:0
QEI Velocity Counter (QEICOUNT)
Offset 0x018
RO
RO
31
15
0
0
Register 7: QEI Velocity Counter (QEICOUNT), offset 0x018
This register contains the running count of velocity pulses for the current time period. Since this is
a running total, the time period to which it applies cannot be known with precision (that is, a read of
this register does not necessarily correspond to the time returned by the QEITIME register since
there is a small window of time between the two reads, during which time either value may have
changed). The QEISPEED register should be used to determine the actual encoder velocity; this
register is exposed for information purposes only. This counter does not increment when VelEn in
QEICTL is 0.
RO
RO
30
14
0
0
Name
Count
RO
RO
29
13
0
0
RO
RO
28
12
0
0
Type
RO
RO
RO
27
11
0
0
RO
RO
26
10
0
0
Reset
RO
RO
25
0
9
0
0
Preliminary
RO
RO
24
0
8
0
Count
Count
Description
The running total of encoder pulses during this velocity
timer period.
RO
RO
23
0
7
0
RO
RO
22
0
6
0
RO
RO
21
0
5
0
RO
RO
20
0
4
0
RO
RO
19
0
3
0
LM3S818 Data Sheet
RO
RO
18
0
2
0
RO
RO
17
0
1
0
RO
RO
16
0
0
0
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