ENC28J60_AT89S52.rar_ C51 ENC28J60_AT89S52_ENC28J60_enc28j60 C

#include "includes.h" code char hex[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; void uart(void) interrupt 4// 串口中断 { if(RI) //接收 { } else //发送 { } } //查询方式发送单个字符 void send(unsigned d1) { ES=0; //TE=1; TI=0;SBUF=d1;while(!TI); //TE=0; TI=0; ES=1; } void printu1(unsigned char * s) { while(*s != 0) { send(*s++); } } //Send String Tor Uart void printu(char * str) { char *ct = str; while (*ct != '\0') { if (*ct == '\n') { SBUF = 13; while (!TI); TI = 0; } SBUF=*ct; while (!TI); TI = 0; ct++; } } // void printuf(char *str, unsigned char cb) { char *ct = str; char cx1; char cx2; while (*ct != '\0') { if (*ct == '%') { if (*(ct + 1) == 'x') { ct += 2; cx1 = cb / 16; cx2 = cb % 16; SBUF = hex[cx1]; while (!TI); TI = 0; SBUF = hex[cx2]; while (!TI); TI = 0; continue; } if (*(ct + 1) == 'c') { ct += 2; SBUF = cb; while (!TI); TI = 0; continue; } } if (*ct == '\n') { SBUF = 13; while (!TI); TI = 0; } SBUF = *ct; while (!TI); TI = 0; ct++; } } //中断实始化 void IntInit(void) { IT0=1; //INT0下降沿中断 EX0=0; //允许INT0中断 IT1=1; //INT1下降沿中断 EX1=0; //允许INT1中断 //WDT_CONTR = 0x3c; // 开看门狗 initUart(); ES =1; ET1=0; TMOD &=0xf0; TMOD |=0x01; TH0=0x4c,TH0=0xf7; ET0=1;TR0=1; EA =1; } //UART初始化 void initUart(void) { TMOD &=0x0f; TMOD |=0x20; SCON=0x50; IP = 0x10; //PCON|=0x80; TH1=0xfd; TL1=0xfd; //9600,normal //TH1=0xfa; TL1=0xfa; //9600,倍速 TR1=1; ET1=0; RI=0; //TE=0; //允许接收 仅485时用。 } void main(void) { // BYTE mac[6]; BYTE led =0;// ip_identfier.word =1;// 时间窗初值 // 设置IP地址 #ifdef LCD lcd_init (); #endif // menu_init (); delay_ms(2); initUart(); send('O'); send('N'); printu("starting...\r\n"); enc28j60_init( avr_mac ); #ifdef LCD lcd_string("ENC28J60 TEST! --Nie 2008.2.12"); #endif //lcd_string("IP:172.31.220.1 PORT:3000 ENCCART"); flag1.bits.syn_is_sent=0; while(1) { // server process response for arp, icmp, http INTN =1; while(INTN==0) server_process(); //client_process(); //delay_us(1); P0 = 0xff; P2 &= 0xf0; P2 |= zwm[led]; P0 = zxm[digit[led]]; if(led<4) led++; else led=0; delay_ms(1); P0 = 0xff; } } // ===================UDP 处理 ================================ // //******************************************************************************************** // The User mydatgram Protocol offers only a minimal transport service // -- non-guaranteed datagram delivery // -- and gives applications direct access to the datagram service of the IP layer. // UDP is used by applications that do not require the level of service of TCP or // that wish to use communications services (e.g., multicast or broadcast delivery) // not available from TCP. // // +------------+-----------+-------------+----------+ // + MAC header + IP header + UDP header + Data ::: + // +------------+-----------+-------------+----------+ // // UDP header // // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ // +00+01+02+03+04+05+06+07+08+09+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+ // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ // + Source port + Destination port + // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ // + Length + Checksum + // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ // + Data ::: + // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ // //******************************************************************************************** // // Function : udp_generate_header // Argument : BYTE *rxtx_buffer is a pointer point to UDP tx buffer // WORD_BYTES dest_port is a destiantion port // WORD_BYTES length is a UDP header and data length // Return value : None // // Description : generate udp header // //******************************************************************************************** void udp_generate_header ( BYTE *rxtx_buffer, WORD dest_port, WORD length ) { WORD_BYTES data ck; // setup source port, default value is 3000 rxtx_buffer[UDP_SRC_PORT_H_P] = UDP_AVR_PORT_H_V; rxtx_buffer[UDP_SRC_PORT_L_P] = UDP_AVR_PORT_L_V; // setup destination port rxtx_buffer[UDP_DST_PORT_H_P] = (dest_port & 0xff00)>>8; rxtx_buffer[UDP_DST_PORT_L_P] = dest_port & 0x00ff; // setup udp length rxtx_buffer[UDP_LENGTH_H_P] = (length & 0xff00) >>8 ; rxtx_buffer[UDP_LENGTH_L_P] = length & 0x00ff; // setup udp checksum rxtx_buffer[UDP_CHECKSUM_H_P] = 0; rxtx_buffer[UDP_CHECKSUM_L_P] = 0; // length+8 for source/destination IP address length (8-bytes) ck.word = software_checksum ( (BYTE*)&rxtx_buffer[IP_SRC_IP_P], length+8, length+IP_PROTO_UDP_V); rxtx_buffer[UDP_CHECKSUM_H_P] = ck.byte.high; rxtx_buffer[UDP_CHECKSUM_L_P] = ck.byte.low; } //******************************************************************************************** // // Function : udp_puts_data // Description : puts data from RAM to UDP tx buffer // //******************************************************************************************** WORD udp_puts_data ( BYTE *rxtx_buffer, BYTE *mydat, WORD offset ) { while( *mydat ) { rxtx_buffer[ UDP_DATA_P + offset ] = *mydat++; offset++; } return offset; } //******************************************************************************************** // // Function : udp_puts_data_p // Description : puts data from program memory to tx buffer // //******************************************************************************************** WORD udp_puts_data_p ( BYTE *rxtx_buffer, BYTE * mydat, WORD offset ) { BYTE data ch; while( (ch = *(mydat++)) ) { rxtx_buffer[ UDP_DATA_P + offset ] = ch; offset++; } return offset; } //******************************************************************************************** // // Function : udp_receive // Argument : BYTE *rxtx_buffer is a pointer, point to UDP tx buffer // BYTE *dest_mac is a pointer, point to destiantion MAC address // BYTE *dest_ip is a pointer, point to destiantion IP address // Return value : if received packet is UDP and destination port matching with AVR port, return true // other return false // // Description : check received packet and process UDP command. // //******************************************************************************************** BYTE udp_receive ( BYTE *rxtx_buffer, BYTE *dest_mac, BYTE *dest_ip ) { WORD_BYTES data dlength; WORD data n; // BYTE generic_buf[MAX_RXTX_BUFFER]; // check UDP packet and check destination port if ( rxtx_buffer[IP_PROTO_P] != IP_PROTO_UDP_V || rxtx_buffer[UDP_DST_PORT_H_P] != UDP_AVR_PORT_H_V || rxtx_buffer[ UDP_DST_PORT_L_P ] != UDP_AVR_PORT_L_V ) return 0; // check UDP command, UDP command are first and second byte if ( rxtx_buffer[UDP_DATA_P] == 'G' && rxtx_buffer[UDP_DATA_P+1] == 'A' && rxtx_buffer[UDP_DATA_P+2] == '\r' && rxtx_buffer[UDP_DATA_P+3] == '\n') { // command response dlength.word = udp_puts_data_p ( rxtx_buffer,"GAOK", 0 ); } else if ( rxtx_buffer[UDP_DATA_P] == '