WIZnet W5300 driver sample for Altera NiosII

• HW spec
  • Altera DE0
  • wiz830mj (w5300)

Use altera DE0 with wiz830mj

control w5300 with avalon MM slave translator

function mapping

nios2e u0 (
   .clk_clk (CLK),
   .reset_reset_n (RST_N),
   .wiz0_address       (WIZ_A),
   .wiz0_write     (wiz_wr),
   .wiz0_read      (wiz_rd),
   .wiz0_readdata      (wiz_readdata),
   .wiz0_writedata     (wiz_writedata),
   .wiz0_chipselect    (wiz_cs),
   .wiz0_byteenable    (wiz_byteenable)
);

wire [15:0] wiz_readdata;
wire [15:0] wiz_writedata;
wire [1:0] wiz_byteenable;
wire wiz_cs, wiz_wr, wiz_rd;
assign WIZ_CS_N = !wiz_cs;
assign WIZ_WR_N = !(wiz_wr && wiz_byteenable[0] && wiz_byteenable[1]);
assign WIZ_RD_N = !(wiz_rd && wiz_byteenable[0] && wiz_byteenable[1]);
assign WIZ_D = (!WIZ_CS_N && !WIZ_WR_N) ? wiz_writedata : 15'bz;
assign wiz_readdata = (!WIZ_CS_N && !WIZ_RD_N) ? WIZ_D : 15'b0;
 

set w5300

setSIPR({ 192, 168, 1, 250 }); // set source IP address
setGAR({ 192, 168, 1, 1 }); // set gateway IP address
setSUBR({ 255, 255, 255, 0 }); // set subnet mask address
setSHAR({ 0x00, 0x08, 0xDC, 0x00, 111, 200 }); // set source hardware address
...

loopback_tcps(0, 5000, data_buf, 0);