Problem with ports of Atmega32l PortC

[bigreat]

Atmega32l PortC question

i do these code:

.def mp=r16
ldi mp,0xff
out ddrc,mp
out portc,mp

but i use a led test every one port of portc
when i test pc0,1,6,7,the led is normally bright
when i test pc2,3,5 the led is only a little bright
when i test pc4,the led is went out

what's the matter with portc
is it damage
or i didn't set it right?
thank you

 

[namelesssix]

Re: Atmega32l PortC question

Refered to the datasheet
some pins of PORTC have reserve for JTAG

you need to disable JTAG first..
if you use ponyprog set it in Security bit setting