Re: Ethernet arduino Questions
I am comfortable that addresses have been set properly. Four permutations of two proven good cables to two proven good ports on the dumbest little hub in the office were utilized. Using the webclient example I see no sign of the board attempting to connect with google.com. With the cable to the hub connected, the amber lamp on the UNO comes on upon application of power to the board. The green lamp flashes intermittently . The RX LED flashes regularly, the TX every few seconds. L9 flashes on it's own schedule, often in some kind of sympathy with RX but not always.
The packet sniffer never detects any communication that can be attributed to the UNO, either MAC or IP address. Instantly upon connecting a different controller board to the same cable, activity from the controller is evident to the sniffer. I keep thinking there is something I overlooked in configuring the board. Is the proper select line for the board the software library default? It is difficult to believe the the board did not test successfully at some point before it came to me. I will print out the schematic and ring out he relevant traces this evening.
What about the reset switch? is it supposed to click like other switches or is the part I am looking at not a switch?
We have adopted the policy of programming everything to broadcast onto the network an attempt to connect to it self several times upon power up. Nothing come of this except the sniffer can show that the device is present on the net. Also it helps one determine the last IP address that was programmed into it. Not difficult to do and very useful.
Thanks for the attention