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Forum Index : Microcontroller and PC projects : Re-flashing the MX470

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paceman
Guru

Joined: 07/10/2011
Location: Australia
Posts: 1329

Posted: 03:37am 16 Apr 2015

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I just did something a bit dumb but others might do the same thing so I thought I'd mention it and save some potential head-scratching.

I'm using a little dual 3.3 + 5v power supply for the 5v to the MX470 Skinnymite. I was attempting to flash Peter Mather's updated Beta 15 but was getting a "protected" error message back from the PiCkit3. I hadn't had any problem when I first flashed it with Beta 14. I finally realised I had connected the 3.3v from the dual supply to Vcc (pin 2) of the PiCkit3 instead of from the 3.3v 'Out' pin on the Skinnymite. I just assumed that's what I'd done when I first programmed the Beta 14 in, but I must have been more awake!

In my defence

I've been doing all my 170 fiddling (28 pin) on a breadboard and I use the 3.3 and the 5v from the dual supply there - and for the PiCkit when I re-program. I can see why it happened but still, not clever - don't get caught like me!

Greg

Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9593

Posted: 02:11pm 16 Apr 2015

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There is always something there to throw you with this stuff!

Well done on tracking it down, and I admire you honesty.

Smoke makes things work. When the smoke gets out, it stops!

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