Hammer How to Enc28j60
First you have to get an Enc28j60, the following links may be usefull:
Next we will be soldering it on to the Hammer_Carrier
We will use the 3.3V regulator of the Hammier Carrrier, but you already need to have done the How_to_Swtching_5V_Regulator
Wire the ENC28J60 th the hammer carrier pins as follows:
enc -- hammer. 1 - 7, 2 - 6, 3 - 5, 4 - nc, 5 - 8, 6 - nc, 7 - 11, 8 - 9, 9 - gnd, 10 - tp9
Also make sure that your 5V main power supply can supply the Hammer as well as the ENC28J60-H.
Software driver info:
The Good Kernel SPI API The Bad & The Ugly The current "driver"