I agree with PaulS. I see nothing that initializes the w5100, nor anything about a webpage in your code. I see only the SD card initialized, and you are lucky it starts ok with the w5100 SPI active.
I agree with PaulS. I see nothing that initializes the w5100, nor anything about a webpage in your code. I see only the SD card initialized, and you are lucky it starts ok with the w5100 SPI active.