我正在做stm32f103，我想用enc28j60传输数据，但我不知道如何传输。我的所有示例代码都使用了http，但我希望通过以太网（enc28j60）在pc和stm32之间进行简单的传输。哪个函数是有用的？
我的代码：
int main(void)
{
SystemInit();
NVIC_Configuration();
SPInet_Init();
simple_server();
return 0;
}
int simple_server(void)
{
u16 plen;
u16 dat_p;
u8 i = 0;
u8 cmd_pos = 0;
u8 cmd;
u8 payloadlen = 0;
char str[30];
char cmdval;
// Del_1ms(100);
/*initialize enc28j60*/
enc28j60Init(mymac);
str[0]=(char)enc28j60getrev(); //IDºÅ
init_ip_arp_udp_tcp(mymac, myip, mywwwport); //½«MAC IP wwwportµØÖ·×°µ½Ö¸¶¨µØ
//ָʾµÆ״̬:0x476 is PHLCON LEDA(ÂÌ)=links status, LEDB(ºì)=receive/transmit
// enc28j60PhyWrite(PHLCON, 0x7a4);
enc28j60PhyWrite(PHLCON, 0x476);
enc28j60clkout(2); // change clkout from 6.25MHz to 12.5MHz
// Del_1ms(20);
//init the ethernet/ip layer:
while (1)
{
// get the next new packet:
plen = enc28j60PacketReceive(BUFFER_SIZE, buf);
//USART_DMASendData(USART1,buf,plen);
/*plen will be unequal to zero if there is a valid packet (without crc error) */
if (plen == 0)
{
continue;
}
// arp is broadcast if unknown but a host may also
// verify the mac address by sending it to
// a unicast address.
if (eth_type_is_arp_and_my_ip(buf, plen))
{
make_arp_answer_from_request(buf);
//USART_DMASendText(USART1,"make_arp_answer_from_request\n");
continue;
}
// check if ip packets are for us:
if (eth_type_is_ip_and_my_ip(buf, plen) == 0)
{
continue;
}
if (buf[IP_PROTO_P] == IP_PROTO_ICMP_V &&
buf[ICMP_TYPE_P] == ICMP_TYPE_ECHOREQUEST_V)
{
// a ping packet, let's send pong
make_echo_reply_from_request(buf, plen);
//USART_DMASendText(USART1,"make_echo_reply_from_request\n");
continue;
}
/***********************************************************************************************************/
// tcp port www start, compare only the lower byte
if (buf[IP_PROTO_P] == IP_PROTO_TCP_V &&
buf[TCP_DST_PORT_H_P] == 0 &&
buf[TCP_DST_PORT_L_P] == mywwwport)
{
if (buf[TCP_FLAGS_P] & TCP_FLAGS_SYN_V)
{
make_tcp_synack_from_syn(buf);
// make_tcp_synack_from_syn does already send the syn,ack
continue;
}
if (buf[TCP_FLAGS_P] & TCP_FLAGS_ACK_V)
{
init_len_info(buf); // init some data structures
// we can possibly have no data, just ack:
dat_p = get_tcp_data_pointer();
if (dat_p == 0)
{
if (buf[TCP_FLAGS_P] & TCP_FLAGS_FIN_V)
{
// finack, answer with ack
make_tcp_ack_from_any(buf);
}
// just an ack with no data, wait for next packet
continue;
}
if (strncmp("GET ", (char *) &(buf[dat_p]), 4) != 0)
{
// head, post and other methods:
//
// for possible status codes see:
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
plen = fill_tcp_data_p(buf, 0, PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<h1>200 OK</h1>"));
goto SENDTCP;
}
if (strncmp("/ ", (char *) &(buf[dat_p + 4]), 2) == 0)
{
plen = fill_tcp_data_p(buf, 0, PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n"));
plen = fill_tcp_data_p(buf, plen, PSTR("<p>Usage: "));
plen = fill_tcp_data(buf, plen, baseurl);
plen = fill_tcp_data_p(buf, plen, PSTR("password</p>"));
plen = fill_tcp_data_p(buf, plen, PSTR("ÍøÂçµØÖ·Ó¦¸ÃÊÇhttp://192.168.1.100/888</p>"));
goto SENDTCP;
}
cmd = analyse_get_url((char *) &(buf[dat_p + 5]));
// for possible status codes see:
if (cmd ==(u8)-1)
{
plen = fill_tcp_data_p(buf, 0, PSTR("HTTP/1.0 401 Unauthorized\r\nContent-Type: text/html\r\n\r\n<h1>401 Unauthorized</h1>"));
goto SENDTCP;
}
if (cmd == 1)
{
LED1 = LED2 = LED3 =1;
i = 1;
}
if (cmd == 0)
{
LED1 = LED2 = LED3 =0;
i = 0;
}
// if (cmd==-2) or any other value
// just display the status:
plen = print_webpage(buf, (i));
SENDTCP :
make_tcp_ack_from_any(buf); // send ack for http get
make_tcp_ack_with_data(buf, plen); // send data
continue;
}
}
/***********************************************************************************************************/
// tcp port www end
//
// udp start, we listen on udp port 1200=0x4B0
if (buf[IP_PROTO_P] == IP_PROTO_UDP_V &&
buf[UDP_DST_PORT_H_P] == 4 &&
buf[UDP_DST_PORT_L_P] == 0xb0)
{
payloadlen = buf[UDP_LEN_L_P] - UDP_HEADER_LEN;
// you must sent a string starting with v
// e.g udpcom version 10.0.0.24
if (verify_password((char *) &(buf[UDP_DATA_P])))
{
// find the first comma which indicates
// the start of a command:
cmd_pos = 0;
while (cmd_pos < payloadlen)
{
cmd_pos++;
if (buf[UDP_DATA_P + cmd_pos] == ',')
{
cmd_pos++; // put on start of cmd
break;
}
}
// a command is one char and a value. At
// least 3 characters long. It has an '=' on
// position 2:
if (cmd_pos<2 ||
cmd_pos>payloadlen - 3 ||
buf[UDP_DATA_P + cmd_pos + 1] != '=')
{
strcpy(str, "e=no_cmd");
goto ANSWER;
}
// supported commands are
// t=1 t=0 t=?
if (buf[UDP_DATA_P + cmd_pos] == 't')
{
cmdval = buf[UDP_DATA_P + cmd_pos + 2];
if (cmdval == '1')
{
//PORTD|= (1<<PD7);// transistor on
//IOCLR |= (1<<26);
//LED1ON();
strcpy(str, "t=1");
goto ANSWER;
}
else if (cmdval == '0')
{
//PORTD &= ~(1<<PD7);// transistor off
//IOSET |= (1<<26);
//LED1OFF();
strcpy(str, "t=0");
goto ANSWER;
}
else if (cmdval == '?')
{
/*
if (IOPIN & (1<<26))
{
strcpy(str,"t=1");
goto ANSWER;
}
*/
strcpy(str, "t=0");
goto ANSWER;
}
}
strcpy(str, "e=no_such_cmd");
goto ANSWER;
}
strcpy(str, "e=invalid_pw");
ANSWER : make_udp_reply_from_request(buf, str, strlen(str), myudpport);
}
}
// return (0);
}
最佳答案
尝试UIPuip-uip-1-0\apps\hello-world
是一个tcp server demo。
和
atcp client demo可在uip帮助文档中找到