MIC-3369 User’s Manual
66
Appendix A
A.1 Programming the Watchdog Timer
To program the watchdog timer, you must write a program which writes a
value to I/O port address 443 (hex). This output value represents time
interval. The value range is from 01 (hex) to FF (hex), and the related
time interval is 1 sec. to 255 sec.
Data Time Interval
01 1 sec.
02 2 sec.
03 3 sec.
04 4 sec.
•
•
•
FF 255 sec.
After data entry, your program must refresh the watchdog timer by rewrit-
ing the I/O port 443. When you want to disable the watchdog timer, your
program should read I/O port 043 (hex). The following example shows
how you might program the watchdog timer in BASIC:
10 REM
Watchdog timer example program
20 OUT &H443, data REM
Start and restart the watchdog
30 GOSUB 1000 REM
Your application task #1,
40 OUT &H443, data REM
Reset the timer
50 GOSUB 2000 REM
Your application task #2,
60 OUT &H443, data REM
Reset the timer
70 X=INP (&H043) REM,
Disable the watchdog timer
80 END
1000 REM
Subroutine #1, your application task
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Содержание MIC-3358
Страница 9: ...CHAPTER 1 Hardware Configuration...
Страница 32: ...MIC 3358 User s Manual 24...
Страница 33: ...CHAPTER 2 Connecting Peripherals...
Страница 38: ...MIC 3358 User s Manual 30...
Страница 39: ...CHAPTER 3 Driver Setup...
Страница 42: ...MIC 3358 User s Manual 34 Figure 3 3 click Next in Hardware Wizard Figure 3 4 click Add Troubleshoot a device...
Страница 45: ...37 Chapter3 Figure 3 9 Browse proper driver in CD ROM device Figure 3 10 click ok in the Wizard windows...
Страница 53: ...45 Chapter3 Figure 3 25 Select proper driver in CD ROM Figure 3 26 tab A IPM driver and click Have Disk...
Страница 54: ...MIC 3358 User s Manual 46 Figure 3 27 Click Next Figure 3 28 Click Finish...
Страница 55: ...47 Chapter3 Figure 3 29 Go to My computer to see A IPM drivers...
Страница 56: ...MIC 3358 User s Manual 48...
Страница 57: ...CHAPTER 4 Award BIOS Setup...
Страница 72: ...MIC 3358 User s Manual 64...
Страница 73: ...Appendix A Programming the Watchdog Timer...
Страница 75: ...67 ChapterA 1070 RETURN 2000 REM Subroutine 2 your application task 2090 RETURN...
Страница 76: ...MIC 3369 User s Manual 68...
Страница 77: ...Appendix B Pin Assignments...
Страница 84: ...MIC 3358 User s Manual 76...