Hi,
we tested a series (more units) of Wiz550io modules. We plugged in a Wiz550io module then tested, then unplugged it and plugged another Wiz550io. The only thing that changes is the Wiz550io module. Arduino and ioshield don’t change. See attached picture.
it’s an original “Arduino DUE R3-E” from arduino.org as it’s printed at the bottom of PCB.
We tested 1 Arduino and a series of Wiz550io.
Thank you for support.
I tested. test boards is Arduino DUE R3(arduino.cc) board and 20ea wiz550io module.
It was all pass. (all normal operate to linked, activity led.)
I think, It is other problem.
where did you bought wiz550io and ioShiled-A.
What is ioShiled-A H/W version?? I tested io-Shield-A 1.1 version.
And, refer to below link to check wiz550io pin description.
there, checking J2-2 RDY pin.
below description is WIZ550io READY(RDY)pin.
READY
This pin is asserted to low after power on.
When RSTn is activated, WIZ550io does auto configuration with embedded MAC and default IP address.
After configuration gets completed, WIZ550io raises this pin to HIGH in order to inform about the completion of WIZ550io’s configuration.
Host processor can only control WIZ55oio when RDY pin is HIGH.