If you can see and program the provided chip but can't program a new one then the next question is where did you get those devices? If you bought them from eBay or one of the other Chinese vendors then most likely you got chips that are not what they claim or are programmed with the programming pin disabled so they can not be re-programmed.
The ATTINY 85 chips I program for use with SoftRocks requires that the reset pin which is used in programming to be disabled so if I program it once, it cannot be programmed again. It takes a special "high voltage" programmer to restore the device back to be able to re-program them.
I would try getting a brand new chip from a reliable source.
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On 1/3/2018 8:59 AM, Chris Wilson wrote:
Hello Cecil / all
Wednesday, January 3, 2018
No joy, I cannot get the programmers, either Extreme Burner or
another Chinese programme called progisp1.72 to see the new virgin
Atmega 328 PU processors no matter what I try. Both see, read and
write the similarly marked QRP Labs programmed ones, and will
re-write updated firmware to them. At a loss as to why new chips are
not even seen, let alone be able to be read or written... Black art!
Thanks, any other ideas welcome, I can sense the frustration building
and can see why others have spent hours on these things :)
I have a real AVR Programmer, actually two of them. Over the years I
have had various Chinese knockoffs, eventually they ended in the trash
due the software not being compatible with OS upgrades so after a while
I went and paid a little extra for the real thing and have had no
problems since.
Just in case I took a Arduino One and programmed it to be a programmer
and tested it and it worked just fine with Windows 10 and since I had
quite a few Arduinos I left it ready to go as a backup.
With both types of programmers I use AVR Studio software and all is
well, mostly I program ATTINY85 devices for use with SoftRocks Radios
but occasionally someone wants a ATMEGA328P programmed to be used as an
Arduino.
--
Cecil - k5nwa
