Quadrotor

#ifndef        _SOCKET_H_

#define        _SOCKET_H_

#include "w5100.h"

extern uint8_t socket(SOCKET s, uint8_t protocol, uint16_t port, uint8_t flag); // Opens a socket(TCP or UDP or IP_RAW mode)

extern void close(SOCKET s); // Close socket

extern uint8_t connect(SOCKET s, uint8_t * addr, uint16_t port); // Establish TCP connection (Active connection)

extern void disconnect(SOCKET s); // disconnect the connection

extern uint8_t listen(SOCKET s);        // Establish TCP connection (Passive connection)

extern uint16_t send(SOCKET s, const uint8_t * buf, uint16_t len); // Send data (TCP)

extern uint16_t recv(SOCKET s, uint8_t * buf, uint16_t len);        // Receive data (TCP)

extern uint16_t peek(SOCKET s, uint8_t *buf);

extern uint16_t sendto(SOCKET s, const uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t port); // Send data (UDP/IP RAW)

extern uint16_t recvfrom(SOCKET s, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t *port); // Receive data (UDP/IP RAW)

extern uint16_t igmpsend(SOCKET s, const uint8_t * buf, uint16_t len);

// Functions to allow buffered UDP send (i.e. where the UDP datagram is built up over a

// number of calls before being sent

/*

  @brief This function sets up a UDP datagram, the data for which will be provided by one

  or more calls to bufferData and then finally sent with sendUDP.

  @return 1 if the datagram was successfully set up, or 0 if there was an error

*/

extern int startUDP(SOCKET s, uint8_t* addr, uint16_t port);

/*

  @brief This function copies up to len bytes of data from buf into a UDP datagram to be

  sent later by sendUDP.  Allows datagrams to be built up from a series of bufferData calls.

  @return Number of bytes successfully buffered

*/

uint16_t bufferData(SOCKET s, uint16_t offset, const uint8_t* buf, uint16_t len);

/*

  @brief Send a UDP datagram built up from a sequence of startUDP followed by one or more

  calls to bufferData.

  @return 1 if the datagram was successfully sent, or 0 if there was an error

*/

int sendUDP(SOCKET s);

#endif

/* _SOCKET_H_ */