User`s manual

Software Manual • EKF Intelligent I/O Controller Family On CompactPCI
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EKF Elektronik GmbH * Philipp-Reis-Str. 4 * D-59065 HAMM (Germany)
Tel. [phone] * Fax. [phone] * E-Mail [e-mail] * Internet http://www.ekf.de
Get Line Control: CMDIMR_GET_LINE_CTL
Description:
This command is used to get the line control value currently set on a port
specified by the port identifier.
Command Code:
19.
Command Data:
None.
Parameters:
None.
Data:
None.
Command Word:
0x0Y13 0000
Flags Port ID Command Command Data
E
R
R
R
P
L
C
P
L
U
F
ID
3
ID
2
ID
1
ID
0
C
7
C
6
C
5
C
4
C
3
C
2
C
1
C
0
D
15
D
14
D
13
D
12
D
11
D
10
D
09
D
08
D
07
D
06
D
05
D
04
D
03
D
02
D
01
D0
0
0000YYYY000100110000000000000000
31 28 27 24 23 16 15 8 7 0
Reply:
Flags Port ID Command Command Data
E
R
R
R
P
L
C
P
L
U
F
ID
3
ID
2
ID
1
ID
0
C
7
C
6
C
5
C
4
C
3
C
2
C
1
C
0
D
15
D
14
D
13
D
12
D
11
D
10
D
09
D
08
D
07
D
06
D
05
D
04
D
03
D
02
D
01
D0
0
X110YYYY0001001100000000BBBBBBBB
31 28 27 24 23 16 15 8 7 0
The controller returns the line control value currently set in bits 07:00 with
the RPL and CPL flags set. The line control value can be gotten by the
.param8.data member of the command word union
EKF_IMR_COMMAND.
On error the RPL, CPL and ERR flags are set and an error code is
passed in bits 15:00 of the reply word.
Notes:
This command really returns the current value of the Line Control
Register (LCR) of the serial controller 16550. See also section
“
EKF_INIT_PARAMS_SERIAL
” for a description of the line control word.
This command is acceptable for serial ports only.