PMD Atlas Compact, Complete Technical Reference

Page: 127 / 188

127
Atlas® Digital Amplifier Complete Technical Reference
6
SetBufferReadIndex C6
h
GetBufferReadIndex C7
h
Syntax
SetBufferReadIndex bufferID index
GetBufferReadIndex bufferID
Motor Types
Arguments
Name Type Range Scaling Units
bufferID unsigned 16 bits 0 to 3 unity -
index unsigned 32 bits 0 to buffer unity double words
length - 1
Packet
Structure
Description
SetBufferReadIndex
sets the address of the read
index
for the specified
bufferID
.
GetBufferReadIndex returns the current read
index
for the specified bufferID .
Restrictions
If the read index is set to an address beyond the length of the buffer, the command will not be executed
and will return error code 7, buffer bound exceeded.
see
Set/GetBufferLength
( p. 126 )
,
Set/GetBufferStart
( p. 128 )
DC Brush Brushless DC Microstepping
SetBufferReadIndex
checksum C6 h
15 8 7 0
First data word
write 0 bufferID
15 2 1 0
Second data word
write index (high-order part)
31 16
Third data word
write index (low-order part)
15 0
GetBufferReadIndex
checksum C7 h
15 8 7 0
First data word
write 0 bufferID
15 2 1 0
Second data word
read index (high-order part)
31 16
Third data word
read index (low-order part)
15 0