in file tinyos-2.x/support/make/avr/avrisp.extra line 16:
PROGRAMMER_FLAGS = -cstk500 -P$(MIB510)
should be:
PROGRAMMER_FLAGS = -cstk500 -P$(AVRISP) ...
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If it is not changed, you would fail to program your avr mote with command such as, "make micaz install avrisp,COM1".
If it is not changed, you would fail to program ( using avrdude ) your avr mote with command such as, "make micaz install avrisp,COM1".
It's already fixed in CVS:
http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x/support/make/avr/avrisp.extra?revision=1.8&view=markup