Микроконтроллеры

Бит выставлен. Вот, короче кусок кода:  void send_DHCP_DISCOVER(SOCKET s) { uint16 i; uint8 addr[4]; uint16 k = 0; MSG.op = DHCP_BOOTREQUEST; MSG.htype = DHCP_HTYPE100MB; MSG.hlen = DHCP_HLENETHERNET; MSG.hops = DHCP_HOPS; // Client set to zero MSG.xid = DHCP_XID; //Transaction ID MSG.secs = DHCP_SECS; //Filled in by client, address acquisition or renewal process MSG.flags = DHCP_FLAGSBROADCAST; // client's IP addres memset(MSG.ciaddr, 0x00, sizeof(MSG.ciaddr)); // your (i.e., client) IP address (filled in by server) memset(MSG.yiaddr, 0x00, sizeof(MSG.yiaddr)); // server's IP address memset(MSG.siaddr, 0x00, sizeof(MSG.siaddr)); // agent IP address memset(MSG.giaddr, 0x00,sizeof(MSG.giaddr)); // Client hardware address memset(MSG.chaddr, 0x00,sizeof(MSG.chaddr)); for (i = 0; i < 6; i++) MSG.chaddr[i] = Mac[i]; // Optinal server host name memset(MSG.sname, 0x00, sizeof(MSG.sname)); // Boot file name memset(MSG.file, 0x00, sizeof(MSG.file)); // MAGIC_COOKIE MSG.OPT[k++] = MAGIC0; MSG.OPT[k++] = MAGIC1; MSG.OPT[k++] = MAGIC2; MSG.OPT[k++] = MAGIC3; MSG.OPT[k++] = dhcpMessageType; MSG.OPT[k++] = 0x01; MSG.OPT[k++] = DHCP_DISCOVER; MSG.OPT[k++] = dhcpClientIdentifier; MSG.OPT[k++] = 0x07; MSG.OPT[k++] = 0x01; MSG.OPT[k++] = Mac[0]; MSG.OPT[k++] = Mac[1]; MSG.OPT[k++] = Mac[2]; MSG.OPT[k++] = Mac[3]; MSG.OPT[k++] = Mac[4]; MSG.OPT[k++] = Mac[5]; MSG.OPT[k++] = hostName; MSG.OPT[k++] = 14; for (i = 0; i < 14; i++) MSG.OPT[k++] = Device_Name[i]; MSG.OPT[k++] = dhcpIPaddrLeaseTime; MSG.OPT[k++] = 0x04; MSG.OPT[k++] = 0xff; MSG.OPT[k++] = 0xff; MSG.OPT[k++] = 0xff; MSG.OPT[k++] = 0xff; MSG.OPT[k++] = dhcpParamRequest; MSG.OPT[k++] = 0x02; MSG.OPT[k++] = subnetMask; MSG.OPT[k++] = routersOnSubnet; /* MSG.OPT[k++] = dhcpParamRequest; MSG.OPT[k++] = 0x06; MSG.OPT[k++] = subnetMask; MSG.OPT[k++] = routersOnSubnet; MSG.OPT[k++] = dns; MSG.OPT[k++] = dhcpT1value; MSG.OPT[k++] = dhcpT2value; */ MSG.OPT[k++] = endOption; // Null Padding for (i = k; i < OPT_SIZE; i++) MSG.OPT[i] = 0; // DST IP : BroadCasting S_port = DHCP_SERVER_PORT; for (i=0; i<4; i++) addr[i] = 0xFF; #ifdef DHCP_DEBUG printf("send_DHCP_DISCOVER : \r\n"); #endif uint16 tt; // send MSG to Broadcasting tt=sendto(s, (uint8 *)(&MSG.op), RIP_MSG_SIZE, addr, S_port); #ifdef DHCP_DEBUG printf("DHCP_DISCOVER was sent %d\r\n", tt); #endif } И хидер. // DHCP state machine. #define STATE_DHCP_DISCOVER 1 #define STATE_DHCP_REQUEST 2 #define STATE_DHCP_LEASED 3 #define STATE_DHCP_REREQUEST 4 #define STATE_DHCP_RELEASE 5 #define MAX_DHCP_RETRY 10 #define DHCP_WAIT_TIME 5 /* UDP port numbers for DHCP */ #define DHCP_SERVER_PORT 67 /* from server to client */ #define DHCP_CLIENT_PORT 68 /* from client to server */ /* DHCP message OP code */ #define DHCP_BOOTREQUEST 1 #define DHCP_BOOTREPLY 2 /* DHCP message type */ #define DHCP_DISCOVER 1 #define DHCP_OFFER 2 #define DHCP_REQUEST 3 #define DHCP_DECLINE 4 #define DHCP_ACK 5 #define DHCP_NAK 6 #define DHCP_RELEASE 7 #define DHCP_INFORM 8 /* DHCP RETRANSMISSION TIMEOUT (microseconds) */ #define DHCP_INITIAL_RTO ( 4*1000000) #define DHCP_MAX_RTO (64*1000000) #define DHCP_HTYPE10MB 1 #define DHCP_HTYPE100MB 2 #define DHCP_HLENETHERNET 6 #define DHCP_HOPS 0 //#define DHCP_XID 0x12345678 // Client Unique ID #define DHCP_SECS 0 #define DHCP_FLAGSBROADCAST 0x8000 #define MAGIC_COOKIE 0x63825363 #define DEFAULT_LEASETIME 0xffffffff /* infinite lease time */ #define htons(X) (X) #define ntohs(X) (X) #define htonl(X) (X) #define ntohl(X) (X) /* bsd */ typedef uint8 u_char; /**< 8-bit value */ typedef uint16 u_short; /**< 16-bit value */ typedef uint16 u_int; /**< 16-bit value */ typedef uint32 u_long; /**< 32-bit value */ typedef union _un_l2cval { u_long lVal; u_char cVal[4]; }un_l2cval; typedef union _un_i2cval { u_int iVal; u_char cVal[2]; }un_i2cval; /* DHCP option and value (cf. RFC1533) */ typedef enum _OPTION { padOption = 0, subnetMask =1, timerOffset =2, routersOnSubnet=3, timeServer=4, nameServer=5, dns=6, logServer=7, cookieServer=8, lprServer=9, impressServer=10, resourceLocationServer=11, hostName=12, bootFileSize=13, meritDumpFile=14, domainName=15, swapServer=16, rootPath=17, extentionsPath=18, IPforwarding=19, nonLocalSourceRouting=20, policyFilter=21, maxDgramReasmSize=22, defaultIPTTL=23, pathMTUagingTimeout=24, pathMTUplateauTable=25, ifMTU=26, allSubnetsLocal=27, broadcastAddr=28, performMaskDiscovery=29, maskSupplier=30, performRouterDiscovery=31, routerSolicitationAddr=32, staticRoute=33, trailerEncapsulation=34, arpCacheTimeout=35, ethernetEncapsulation=36, tcpDefaultTTL=37, tcpKeepaliveInterval=38, tcpKeepaliveGarbage=39, nisDomainName=40, nisServers=41, ntpServers=42, vendorSpecificInfo=43, netBIOSnameServer=44, netBIOSdgramDistServer=45, netBIOSnodeType=46, netBIOSscope=47, xFontServer=48, xDisplayManager=49, dhcpRequestedIPaddr=50, dhcpIPaddrLeaseTime=51, dhcpOptionOverload=52, dhcpMessageType=53, dhcpServerIdentifier=54, dhcpParamRequest=55, dhcpMsg=56, dhcpMaxMsgSize=57, dhcpT1value=58, dhcpT2value=59, dhcpClassIdentifier=60, dhcpClientIdentifier=61, endOption = 255 }OPTION; #define OPT_SIZE 312 //DHCP total size : 544 #define RIP_MSG_SIZE (240 + OPT_SIZE) #define POS_OPTION (240) typedef struct _RIP_MSG{ uint8 op; //Message op code / message type. 1 = BOOTREQUEST, 2 = BOOTREPLY uint8 htype; //Hardware address type (e.g., '1' = 10Mb Ethernet) uint8 hlen; //Hardware address length (e.g. '6' for 10Mb Ethernet) uint8 hops; //Client sets to zero, optionally used by relay agents when booting via a relay agent. uint32 xid; //Transaction ID. uint16 secs; //Seconds passed since client began the request process uint16 flags; uint8 ciaddr[4]; //Client IP address uint8 yiaddr[4]; //Your(Client) IP address uint8 siaddr[4]; //Server IP address uint8 giaddr[4]; //Relay agent IP address uint8 chaddr[16]; // Client hardware address uint8 sname[64]; //Optional server host name uint8 file[128]; //Boot file name uint8 OPT[OPT_SIZE]; //Optional parameters }RIP_MSG; // DEFINE DHCP MACGIC COOKIE #define MAGIC0 0x63 #define MAGIC1 0x82 #define MAGIC2 0x53 #define MAGIC3 0x63 void send_DHCP_DISCOVER(SOCKET s); char parseDHCPMSG(SOCKET s,uint16 length); char DHCP_SetIP(); void check_dhcp(void); void send_DHCP_REQUEST(SOCKET s, uint8 REREQ); void set_network(void); #define MAX_BUF_SIZE 0x2000 // Max Receive buffer size : 8192 #define MAX_SBUF_SIZE 0x2000 // Max Serial Buffer size : 8192 #define SOCK_DHCP 0 #define TIMER0_COUNT 0xE35B // 1ms W7100 #define predTL0 (TIMER0_COUNT & 0xff) #define predTH0 (TIMER0_COUNT >> 8) void Init_Net_Default(void); void Init_Net(void); void Init_Timer0(void); #endif