Watchdog0 example, Example – ADLINK CM1-86DX2 User Manual
Page 64
58
Using the Module
#set direction of RS232/485 mode switch GPIOs to output
dir_reg=$(./dx2_gp
3
d g)
echo "RAW Value for dir_reg: 0x$dir_reg"
dir_reg
=$(printf %02x $((0x$dir_reg|0xc0)))
echo "new Value for dir_reg: 0x$dir_reg"
./dx2_gp
3
d
$dir_reg
#set RS485 mode: output=1
data_reg=$(./dx2_gp
3
i
1
)
echo "RAW Value for data_reg: 0x$data_reg"
data_reg
=$(printf %02x $((0x$data_reg&0x3F)))
echo "new Value for data_reg: 0x$data_reg"
./dx2_gp
3
o
$data_reg
#######################################################
# GPA6 (COM3) and GPA7 (COM4)
#######################################################
#set direction of RS232/485 mode switch GPIOs to output
dir_reg=$(./dx2_gp a d g)
echo "RAW Value for dir_reg: 0x$dir_reg"
dir_reg
=$(printf %02x $((0x$dir_reg|0xc0)))
echo "new Value for dir_reg: 0x$dir_reg"
./dx2_gp a d
$dir_reg
#set RS485 mode: output=1
data_reg=$(./dx2_gp a i 1)
echo "RAW Value for data_reg: 0x$data_reg"
data_reg
=$(printf %02x $((0x$data_reg&0x3F)))
echo "new Value for data_reg: 0x$data_reg"
./dx2_gp a o
$data_reg
Watchdog0
Example
#include
<
sys
/
io
.
h
>
#include
<
stdio
.
h
>
#define WDT0_INDEX 0x22
#define WDT0_DATA 0x23
int
main
()
{
unsigned int
wdog_time
= (
0x20L
*
0x500L
);
unsigned char
trig
=
0
,
wdog_en
=
0
,
reset_cntr
=
0
;
if (
iopl
(
3
) !=
0
)
{
printf
(
"IOPL error
\
n"
);
return
1
;
}
//Unlock sequence
outb
(
0x13
,
WDT0_INDEX
);
Please note that this shell script example is provided for a system running a bash with
Linux. It is using some proprietary software developed at ADLINK Technology, which is
based on the code example given for GPIO programming.