Juraj:
which pin did you choose for SS on Due? did you set it with WiFiSpi.init()?
I relied on the default being pin 52, as found here and here
Putting 52 in begin() made it work!
Thanks!!!!!!!!!!!!!!!!
Juraj:
there is a small problem with esp8266 SS pin. If esp is reset and the master holds the SS HIGH, then esp doesn't boot (io 15 must be LOW at boot). my recommended solution is here
I set SS to low first line in setup(); so far no issues.
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