Re: Programming new Chip for HT20 - Problems
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I had a 328P from an Uno board with a bootloader installed. I just uploaded know good V2.0 code for HT20 and it worked fine. The sidetone was correct speed.
I tried to burn a bootloader on a virgin chip and had nothing but problems. I've done it before on other Arduino chips but this time I keep getting an "invalid chip signature".
And the burn attempt locks the chip out of further ISP attempts. I fortunately have a fuse restorer for Atmels and was able to bring the chip back. I do a sanity check with Avrdude to make sure I'm talking to the chip. It also reads the fuses. The sanity check does not work on a good working HT20 328P. To me that means the chip is locked from further ISP attempts.
Anyway, I'm going to try to ISP program the bootloader. I think the file is out there.
I don't know why I always have so much trouble with Arduino projects. I do eventually get them going but with great effort. But I do learn......
On Thu, Mar 12, 2020 at 7:42 AM Dave Benson <davek1swl@...> wrote: