Watchdog fuse bit

laborratte · Joined: 27 Jul 2005 Posts: 305 Location: Berlin

Hi Mark,

a $NOWD option would also change the timing, as you than have to move the _initmicro call after save & change of MCUSR (which is mandatory for watchdog changes as I understand the datasheets).

If you want to keep the timing for most users maybe a $YOU_CAN_CONFIG_WATCHDOG_IN_INITMICRO_BUT_WITH_CHANGED_TIMING option, which toggels the _initmicro call from actual position to the position O-Familiy suggest. Then the users with "huge memory, slow clock and always watchdog on" can config the watchdog at a early stage. All other get the fastest _initmicro as possible.

Maybe you find a better name for the option....

albertsm · Joined: 09 Apr 2004 Posts: 6197 Location: Holland

Hello O-Family

ok, i get the problem. when the fuse is set, the wd is always on. even while the compiler turns it off, it will not respond to that.
i moved the disabling of the WD before the init_micro call. please test it, it is in the SLA area.
the few extra cycles (depending on the chip) are nothing compared to the startup time of the oscillator so i that will not be a real problem.

O-Family · Joined: 23 May 2010 Posts: 338 Location: Japan

Hi Mark

Reports.
This problem was resolved in 2.0.8.0 of the SLA.
Modifications will be helpful.

Best regards
O-Family

albertsm · Joined: 09 Apr 2004 Posts: 6197 Location: Holland

thanks for testing and letting me know.