Seatalk detection fail pattern

[opaezosu]

Thanks, yes I did try that, but no luck this time, it used to work. Do you happen to have a link to the optocoupler you are using?

I am suspicious of a sw update that happened a couple of weeks ago when I connected the boat's pi to the internet. 
Either that or the optocoupler acting up. I'll try reading directly from the gpio next time I'm in the boat to see if there is some activity in there.

Best

I was at the boat during the weekend, and for the first time I could not get the seatalk working at all: the led on the optocoupler blinking as always when the instruments are on, but this time SK did not read any of the data. I tried restarting the gpiod service several times, nothing, restarting sk also nothing. I tried manually setting the gpio hi/lo (it has worked before) to trigger the data acquisition, no luck this time. So I'm in a worse place now of what I was a week before. Cable connections did not change.

Any thoughts?

I have detected that if I re-start pigpiod it starts working

In the terminal type: sudo systemctl restart pigpiod

good luck!