Digital Control Systems (DCS) Group 1
Texas Instruments
Description This module stores the real-time values of four user selectable software
Q15 variables in the data RAM provided on the 28xx DSP. Four
variables are selected by configuring four module inputs, iptr1, iptr2, iptr3
and iptr4, point to the address of the four variables. The starting
addresses of the four RAM locations, where the data values are stored,
are set to DLOG_4CH_buff1, DLOG_4CH_buff2, DLOG_4CH_buff3, and
DLOG_4CH_buff4. The DATALOG buffer size, prescalar, and trigger
value are also configurable.
iptr1
iptr2
iptr3
iptr4
H/W
RAM
DATALOG
Availability This 16-bit module is available in one interface format:
1) The CcA interface version
Module Properties Type: Target Dependent, Application Independent
Target Devices: x281x or x280x
CcA Version File Names: dlog4chc.asm, dlog4ch.h
IQmath library files for C: N/A
Item C version Comments
Code Size
□
(
x281x/x280x)
75/75 words
Data RAM
0 words
?
xDAIS ready No
XDAIS component No IALG layer not implemented
Multiple instances Yes
Reentrancy Yes
?
Each pre-initialized DLOG_4CH structure consumes 21 words in the
data memory
□
Code size mentioned here is the size of the init() and update() functions
4-Channel Data Logging Utility Module
DATALOG
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