I posted on the 5500 discussion group on 01AUG14 with this topic:
"Can’t update Sn_RX_RD on WizNet550io"
No response although lots of views. Still no luck in being able to update the RD pointer.
Odds are I’ve made a small error but I can’t find it. In a couple of days I have to make a decision which is probably going to be switch to a Microchip Ethernet product. Not because the WizNet 550io is a bad product but it’s pointless to work with a product that has zero support. I’ve got a full box of various PICDemo boards. I’ve even written working software that implements the Ethernet DMX 1.31 protocol so instead of laying out the board to hold the WizNet550io I’ll design a more sophisticated board that uses the PIC32. In the long run I’ll be better off.