void packet_in(uint8_t *data, uint16_t size)
{
FullPacket p;
/* print_packet(data, size);*/
proto_eth_demangle(&p.eth, data);
printf("Eth received\r\n");
if (!MAC_ADDR_EQUAL(p.eth.dst.addr, _bmac) && !MAC_ADDR_EQUAL(p.eth.dst.addr, simple_net_get_mac()))
return;
if (p.eth.type != PROTO_IP)
return;
proto_ip_demangle(&p.ip, data + IP_OFFSET);
printf("IP received\r\n");
printf("Src: ");
print_ip(p.ip.src_addr);
printf("\r\nDst: ");
print_ip(p.ip.dst_addr);
printf("\r\n");
if (p.ip.protocol != PROTO_UDP)
return;
proto_udp_demangle(&p.udp, data + UDP_OFFSET);
printf("UDP received %d %d\r\n", p.udp.src_port, p.udp.dst_port);
if (p.udp.dst_port != DHCP_CLIENT_PORT || p.udp.src_port != DHCP_SERVER_PORT)
return;
printf("Received DHCP packet\r\n");
proto_dhcp_demangle(&p.dhcp, data + DHCP_OFFSET);
dhcp_process_packet(&p);
}
int main(void){
uint16_t plen;
DDRC |= 1U << 3;
/* DDRB|= (1<<DDB1); */
/* set output to Vcc, LED off */
PORTC |= 1U << 3;
delay_ms(20);
PORTC &= ~(1U << 3);
delay_ms(20);
// set the clock speed to 8MHz
// set the clock prescaler. First write CLKPCE to enable setting of clock the
// next four instructions.
/* CLKPR=(1<<CLKPCE); */
/* CLKPR=0; // 8 MHZ */
/* enable PB0, reset as output */
DDRB|= (1<<DDB0);
/* set output to gnd, reset the ethernet chip */
PORTB &= ~(1<<PB0);
delay_ms(20);
/* set output to Vcc, reset inactive */
PORTB|= (1<<PB0);
delay_ms(100);
PORTC |= 1U << 3;
delay_ms(20);
PORTC &= ~(1U << 3);
delay_ms(20);
// LED
/* enable PB1, LED as output */
/*initialize enc28j60*/
enc28j60Init(mymac);
/* Magjack leds configuration, see enc28j60 datasheet, page 11 */
// LEDA=greed LEDB=yellow
//
// 0x880 is PHLCON LEDB=on, LEDA=on
// enc28j60PhyWrite(PHLCON,0b0000 1000 1000 00 00);
enc28j60PhyWrite(PHLCON,0x880);
delay_ms(500);
//
// 0x990 is PHLCON LEDB=off, LEDA=off
// enc28j60PhyWrite(PHLCON,0b0000 1001 1001 00 00);
enc28j60PhyWrite(PHLCON,0x990);
delay_ms(500);
//
// 0x880 is PHLCON LEDB=on, LEDA=on
// enc28j60PhyWrite(PHLCON,0b0000 1000 1000 00 00);
enc28j60PhyWrite(PHLCON,0x880);
delay_ms(500);
//
// 0x990 is PHLCON LEDB=off, LEDA=off
// enc28j60PhyWrite(PHLCON,0b0000 1001 1001 00 00);
enc28j60PhyWrite(PHLCON,0x990);
delay_ms(500);
//
// 0x476 is PHLCON LEDA=links status, LEDB=receive/transmit
// enc28j60PhyWrite(PHLCON,0b0000 0100 0111 01 10);
enc28j60PhyWrite(PHLCON,0x476);
delay_ms(100);
PORTC &= ~(1<<PC3);
delay_ms(1000);
dhcp_init();
while(1){
// get the next new packet:
if((plen = enc28j60PacketReceive(BUFFER_SIZE, buf))) {
if(dhcp_process_packet(buf, plen))
continue;
if(arp_process_packet(buf, plen))
continue;
if(icmp_process_packet(buf, plen)) {
if (PORTC & (1 << PC3))
PORTC &= ~(1 << PC3);
else
PORTC |= (1 << PC3);
continue;
}
} else {
//dhcp_tick_seconds();
}
}
return (0);
}
