On Tue, 2005-11-15 at 14:25 +1000, Neil Davey wrote: > It is possible for the strip tracks to have cracks in them, either from > manufacture, fatigue or stress, so it might not hurt to run > a line of solder over the unused tracks between the micro and the crystal... > > Also, I know it's a simple thing.. but we have all done it... are you > *sure* your caps are attached to ground.... :)
Yeah... I resoldered everything, putting solder all over the tracks. They are very short, as I put the AVR chip on the edge of the prototyping board, leaving just enough space to squeeze teh crystal and capacitors. I replaced the crystal by another one (same part number though). I tried with CKOPT enabled and disabled, still won't start... ohhhhhhhhhhhhhh... this is getting crazy. About the fuse bits that have a reversed logic, I am not sure why the data sheet keeps insisting that 0 means programmed and 1 unprogrammed. It's starting to confuse me more than anything. No need to tell the user about this reversed logic is it ? I am really starting to find it confusing: "when they write "1" in a truth table, does it really mean "1", or does it mean "enabled"/programmed, hence I must actually write a 0 not a 1 ? Brrr... Why don't they just give tables and let the user program this into the fuse bytes, completely omitting any and all comment about this reversed logic. They say to program CKSEL3:0 to 1111 for a high speed crystal, so I set all these bits to one in the lower fuse byte, not to 0. Looks kinda hopeless now. I am getting bored with it :-/ Since the on-board RC oscillator at 8MHz is enough to keep me going, I guess I should better move on and resume the development of the software. Once finished, I will get a proper PCB manufactured, and try one last time to get the crystal going... -- Vince, completely clueless. _______________________________________________ AVR-chat mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/avr-chat
