I am new to W5100 and maybe this topic have been answered in the past. I could not find anything relative solution in forum search.
I am trying to implement an embedded client-server application with two W5100-based arduino ethernet shields. This is a TCP
protocol application. I follow the datasheet instructions and W5100 libraries and managed to establish a client connection to server but only
if the two slields (client and server) are connected to a hub/router.
Observing the pinouts of the shields, I realized that a crossover RJ45 cable connection must be implemented between client and server in order to communicate each other (transmit server signals route to the client receive signals and vice versa). The fact is that does not work.
Does anyone enconter the same propblem?