void nicInit(void)
{
uint8_t macaddr[6];
W51_init();
macaddr[0] = ETHADDR0;
macaddr[1] = ETHADDR1;
macaddr[2] = ETHADDR2;
macaddr[3] = ETHADDR3;
macaddr[4] = ETHADDR4;
macaddr[5] = ETHADDR5;
nicSetMacAddress(macaddr);
socket(MACRAW_SOCKET, W5100_SKT_MR_MACRAW, 0x00, 0x00);
}
int main(void)
{
unsigned int sockaddr;
unsigned char mysocket;
unsigned int rsize;
/* Initialize the UART for ATmega168 96008N1 */
uart_init();
stdout = &uart_stdout; //Required for printf init
mysocket = 0; // magic number! declare the socket number we will us
sockaddr = W5100_SKT_BASE(mysocket); // calc address of W5100 register set for this socket
puts("AVR Ethernet\r\n");
/*
* Initialize the ATmega168 SPI subsystem
*/
CS_PORT |= (1 << CS_BIT); // pull CS pin high
CS_DDR |= (1 << CS_BIT); // now make it an output
SPI_PORT = SPI_PORT | (1 << PORTB2); // make sure SS is high
SPI_DDR = (1 << PORTB3) | (1 << PORTB5) | (1 << PORTB2); // set MOSI, SCK and SS as output, others as input
SPCR = (1 << SPE) | (1 << MSTR); // enable SPI, master mode 0
SPSR |= (1 << SPI2X); // set the clock rate fck/2
/*
* Load up the callback block, then initialize the Wiznet W5100
*/
my_callbacks._select = &my_select; // callback for selecting the W5100
my_callbacks._xchg = &my_xchg; // callback for exchanging data
my_callbacks._deselect = &my_deselect; // callback for deselecting the W5100
my_callbacks._reset = &my_reset; // callback for hardware-reset of the W5100
W51_register(&my_callbacks); // register our target-specific W5100 routines with the W5100 library
W51_init(); // now initialize the W5100
/*
* Configure the W5100 device to handle PING requests.
* This requires configuring the chip, not a specific socket.
*/
W51_config(&my_cfg); // config the W5100 (MAC, TCP address, subnet, etc
puts("Debug: AVR Ethernet after W5100 config\r\n");
/*
* The main loop. Control stays in this loop forever, processing any received packets
* and sending any requested data.
*/
while (1) {
switch (W51_read(sockaddr + W5100_SR_OFFSET)) // based on current status of socket...
{
case W5100_SKT_SR_CLOSED: // if socket is closed...
if (OpenSocket(mysocket, W5100_SKT_MR_TCP, HTTP_PORT) == mysocket) // if successful opening a socket...
{
Listen(mysocket);
_delay_ms(1);
}
break;
case W5100_SKT_SR_ESTABLISHED: // if socket connection is established...
rsize = ReceivedSize(mysocket); // find out how many bytes
if (rsize > 0) {
if (Receive(mysocket, buf, rsize) != W5100_OK)
break; // if we had problems, all done
/*
* Add code here to process the payload from the packet.
*
* For now, we just ignore the payload and send a canned HTML page so the client at least
* knows we are alive.
*/
strcpy_P((char *)buf,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nPragma: no-cache\r\n\r\n"));
strcat_P((char *)buf,PSTR("<html>\r\n<body>\r\n"));
strcat_P((char *)buf,PSTR("<title>Title</title>\r\n"));
strcat_P((char *)buf,PSTR("<p>Hello world</p>\r\n"));
strcat_P((char *)buf,PSTR("</body>\r\n</html>\r\n"));
if (Send(mysocket, buf, strlen((char *)buf)) == W5100_FAIL) break; // just throw out the packet for now
DisconnectSocket(mysocket);
} else // no data yet...
{
_delay_us(10);
}
break;
case W5100_SKT_SR_FIN_WAIT:
case W5100_SKT_SR_CLOSING:
case W5100_SKT_SR_TIME_WAIT:
case W5100_SKT_SR_CLOSE_WAIT:
case W5100_SKT_SR_LAST_ACK:
CloseSocket(mysocket);
break;
}
}
return 0;
}
