de.weAut.demos

Class PiWDogDemo

java.lang.Object

de.weAut.demos.PiWDogDemo

All Implemented Interfaces:

ComVar, PiUtil, PiVals

public class PiWDogDemo
extends Object
implements PiUtil

Demo (Test) of using Raspberry Pi watchdog with Java.

This programme initialises the watchdog, triggers it 3 times after 4, 8 and 14 s, then closes it (and the program) after 2 s.
This shall not lead to a reset. If the program was started with option --boot the times will be 14, 17, 20 s. Here, the 17 must lead to a reset when the program is not killed early enough.
Run by:

    java  de.weAut.demos.PiWDogDemo [--boot]
  

To use the watchdog in Java programs like this one the watchdog's access rights have to be changed; see the publication Raspberry for remote services.

Copyright © 2019 Albrecht Weinert

Version:

50 (4.06.2021)

Author:

Albrecht Weinert a-weinert.de

Nested Class Summary

Nested classes/interfaces inherited from interface de.weAut.PiUtil

PiUtil.Impl, PiUtil.LeTick

Field Summary

Fields inherited from interface de.weAut.PiUtil

ERR_ASSIGN_PIN, ERR_CLOSE_WDOG, ERR_NoGPIOLOCK, ERR_NoLOCKFILE, ERR_NoLOCKPROC, ERR_NOT_LOCKED, ERR_OPEN_W_DOG, ERR_PIGPIOD_CON, lckPiGpioPth, lckWinGpioPth

Fields inherited from interface de.weAut.PiVals

GPIO_INP, GPIO_OUT, GPIOmax, GPIOmin, GPIOutM, H1, HI, L0, LO, PI_PUD_DOWN, PI_PUD_DT, PI_PUD_KP, PI_PUD_OFF, PI_PUD_UP, PIN0, PIN00, PIN01, PIN02, PIN04, PIN06, PIN09, PIN0V, PIN1, PIN14, PIN17, PIN2, PIN20, PIN25, PIN3V, PIN4, PIN5V, PIN6, PIN9, PINig, PINix, PIO_ALT0, PIO_ALT1, PIO_ALT2, PIO_ALT3, PIO_ALT4, PIO_ALT5

Fields inherited from interface de.frame4j.util.ComVar

AUTHOR, BLANK_STRING, cons, CONSOL_ENCODING, COPYRIGHT, D, D_NaN, D_NegInf, D_PosInf, EMPTY_INT_A, EMPTY_STRING, FILE_ENCODING, FRW_CLLD, FS, FSS, H, hasCons, HOST_IP, HOST_IPv4, HOST_NAME, INIT_ERROR, JAR_ENCODING, JH, JOB_DONE_OK, JRL, LOG_OUT_ERROR, M, MAIN_THREAD_EXC, NO_BYTES, NO_CLASSES, NO_DOUBLES, NO_OBJECTS, NO_PARS_ERROR, NO_STRINGS, NOT_WINDOWS, ON_PI, ONE_DAY, ONE_HOUR, ONE_LEAP_YEAR, ONE_MINUTE, ONE_SECOND, ONE_WEEK, ONE_YEAR, OS, PROG_NAME, PROG_SHORT, PS, RUNTIME, S, SHY, UD, UL, UL_UR_da, UR

Constructor Summary

Constructors

Constructor and Description
PiWDogDemo()

Method Summary

Modifier and Type	Method and Description
void	doIt(String[] args) The application's work.
static void	main(String[] args) The application start.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.weAut.PiUtil

argHost, argPiType, argPort, argTimeout, closeLock, closeWatchdog, eightDigitHex, errorText, getDelCnt, getLastExcept, getLastExcMess, getLastLockFN, getOut, getOvrCnt, getUseLock, openLock, openLockPi, openWatchdog, regAsStdMBean, repExc, setArgHost, setArgPiType, setArgPort, setArgTimeout, setUseLock, systemExit, thrDelay, triggerWatchdog, twoDigitDec

Constructor Detail

PiWDogDemo

public PiWDogDemo()

Method Detail

main

public static void main(String[] args)

The application start.

Can be stopped by signal (cntlC), kill command and the like.

Parameters:

args - start parameters, none or --boot

doIt

public void doIt(String[] args)

The application's work.