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wdt_enable(WDTO_15MS);
for(;;)
_delay_ms(1);
concerning changes to the default config in the first place, i disabled the check in the
default bootLoaderInit for MCUCSR. (NB: MCUCSR is defined as MCUSR on some chips)
when i reset like this with the bootLoaderCondition ==
- false, the reset restarts the program i flashed on top of usbasploader. otherwise, when i reset with the condition
- true, it seems like the programmer is stuck somehow (as soon as i remove the jumper, the bootloader boots into the flashed program).
it seems that the problem is related to the wdt_disable in usbasploader. according to the libavr documentation, MCUSR has to be set to 0 before wdt_disable().
would it be reasonable to generally (in the sense of the next version of usbasploader) move the wdt_disable call to bootLoaderInit, extract MCUC?SR to a mirror as described in the documentation after setting MCUCSR to 0?
the bootLoaderInit code i'm finally using is:
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PORTD |= (1 << JUMPER_BIT); /* activate pull-up */
if(!(MCUCSR & ((1 << EXTRF) | (1 << WDRF)))) /* If this was not an external reset or a watchdog reset, ignore */
leaveBootloader();
MCUCSR = 0; /* clear all reset flags for next time */
wdt_disable(); /* main app may have enabled watchdog */