On 14/11/16 14:46, Charles Steinkuehler wrote:
This after the semi-obligatory 'brain-fade' where I forgot how I had powered the
5v source to the 7i76
and could not work out why the 7i76 was 'missing'.
The answer is that the DE0-Nano does NOT supply a 5v feed as the 5i25 will do,
so you must wire
one in and change the W2 jumper accordingly - thanks for the prompt Bas!
The W1 and W2 jumpers on my interface should allow you to provide 5V
to the 7i76, just like the 5i25.
Ah, that seems obvious now you say it, but never seen a manual for it ;-)
I have some reservations as to whether the PSU with the DE0-Nano would
be up to supplying the 7i76 as well, so separate power might be best
With either the 5i25 or my board, you have to have field power to the
7i76 smart-serial logic when you load the hm2_soc_ol for any of the
7i76 GPIOs to be detected. Is that what was going wrong?
Exactly, I thought I had wired the 7i76 to a 5v supply in the controller
head, but had in fact
used that supply later for the pendant MPG and changed it to draw from
the 5i25, a fact I had forgotten.
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