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Re:Building an ENC28J60 Ethernet Dev Board
Date: 2009/08/27 17:33	By: florinfp	Status: Visitor

Hello. First please forgive my bad English. I'm very interested in Ethernet-PIC projects and I made this developing board with a few modifications (as I allready had a board with a PIC18F4620 for my other projects, I made only a board with ENC28J60 part which is connected to my PIC board with a DB25 connector). I use a 10MHZ crystal with HS-PLL (40000000 HZ)
I made the 4 changes
1.In compiler.h
#define CLOCK_FREQ (40000000) // Hz
2. In the hardware definitions in enc28j60.c the MCP_RESET pin must be changed to RD3
#define MCP_RESET_TRIS (TRISD_RD3)
#define MCP_RESET_IO (LATD3)
3.The linker script should be changed to 18f4620 and in 'Configure', 'Select Device' the 18f4620 selected
4.In the 'Configure', 'Configuration Bits' the Oscillator set to 'HS-PLL' for the 10Mhz crystal.

When I connect the board to my ethernet router DLINK DI-804HV( with has DHCP enabled - my desktop computer works (it receive an IP), but the board transmit a lot of packets using UDP protocol with Header Checksum Incorect.
I see this in WIRESHARK NETWORK PROTOCOL ANALYZER.

Can anyone help me to solve this problem?

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