Diff: UIPUdp.h

Revision:

0:5350a66d5279

Child:

2:049ce85163c5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/UIPUdp.h	Mon Sep 15 11:12:30 2014 +0000
@@ -0,0 +1,108 @@
+/*
+ UIPUdp.h - Arduino implementation of a uIP wrapper class.
+ Copyright (c) 2013 Norbert Truchsess <norbert.truchsess@t-online.de>
+ All rights reserved.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef UIPUDP_H
+    #define UIPUDP_H
+
+    #include "ethernet_comp.h"
+    #include "mbed.h"
+    #include <Udp.h>
+    #include "mempool.h"
+extern "C"
+{
+    #include "uip.h"
+}
+    #define UIP_UDP_MAXDATALEN      1500
+    #define UIP_UDP_PHYH_LEN        UIP_LLH_LEN + UIP_IPUDPH_LEN
+    #define UIP_UDP_MAXPACKETSIZE   UIP_UDP_MAXDATALEN + UIP_UDP_PHYH_LEN
+    #ifndef UIP_UDP_NUMPACKETS
+        #define UIP_UDP_NUMPACKETS  5
+    #endif
+class UIPUDP :
+    public UDP
+{
+private:
+    struct uip_udp_conn*    _uip_udp_conn;
+
+    struct appdata_t
+    {
+        uint16_t    rport;
+        IPAddress   ripaddr;
+        memaddress  out_pos;
+        memhandle   packets_in[UIP_UDP_NUMPACKETS];
+        memhandle   packet_in;
+        memhandle   packet_out;
+        bool        send;
+    } appdata;
+public:
+    UIPUDP(void);   // Constructor
+    uint8_t     begin(uint16_t);    // initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use
+    void        stop(void);         // Finish with the UDP socket
+
+    // Sending UDP packets
+    // Start building up a packet to send to the remote host specific in ip and port
+    // Returns 1 if successful, 0 if there was a problem with the supplied IP address or port
+    int         beginPacket(IPAddress ip, uint16_t port);
+
+    // Start building up a packet to send to the remote host specific in host and port
+    // Returns 1 if successful, 0 if there was a problem resolving the hostname or port
+    int         beginPacket(const char* host, uint16_t port);
+
+    // Finish off this packet and send it
+    // Returns 1 if the packet was sent successfully, 0 if there was an error
+    int         endPacket(void);
+
+    // Write a single byte into the packet
+    size_t      write(uint8_t);
+
+    // Write size bytes from buffer into the packet
+    size_t      write(const uint8_t* buffer, size_t size);
+
+    //    using Print::write;
+    // Start processing the next available incoming packet
+    // Returns the size of the packet in bytes, or 0 if no packets are available
+    int         parsePacket(void);
+
+    // Number of bytes remaining in the current packet
+    int         available(void);
+
+    // Read a single byte from the current packet
+    int         read(void);
+
+    // Read up to len bytes from the current packet and place them into buffer
+    // Returns the number of bytes read, or 0 if none are available
+    int         read(unsigned char* buffer, size_t len);
+    // Read up to len characters from the current packet and place them into buffer
+
+    // Returns the number of characters read, or 0 if none are available
+    int         read(char* buffer, size_t len)  { return read((unsigned char*)buffer, len); };
+
+    // Return the next byte from the current packet without moving on to the next byte
+    int         peek(void);
+
+    void        flush(void);    // Finish reading the current packet
+
+    // Return the IP address of the host who sent the current incoming packet
+    IPAddress   remoteIP(void);
+
+    // Return the port of the host who sent the current incoming packet
+    uint16_t    remotePort(void);
+private:
+    static void uip_callback(uip_udp_appstate_t* s);
+};
+#endif