Adding ethernet library.

hardware/libraries/Ethernet/Client.cpp

@@ -0,0 +1,97 @@
+extern "C" {
+  #include "types.h"
+  #include "w5100.h"
+  #include "socket.h"
+}
+
+#include "Ethernet.h"
+#include "Client.h"
+#include "Server.h"
+
+Client::Client(uint8_t sock) {
+  _sock = sock;
+}
+
+Client::Client(uint8_t *ip, uint16_t port) {
+  _ip = ip;
+  _port = port;  
+}
+
+uint8_t Client::connect() {
+  _sock = 255;
+  
+  for (int i = 0; i < MAX_SOCK_NUM; i++) {
+    if (getSn_SR(i) == SOCK_CLOSED) {
+      _sock = i;
+    }
+  }
+  
+  if (_sock == 255)
+    return 0;
+    
+  // XXX: what port should we connect from?
+  socket(_sock, Sn_MR_TCP, _port, 0);
+  
+  if (!::connect(_sock, _ip, _port))
+    return 0;
+    
+  while (status() != SOCK_ESTABLISHED) {
+    if (status() == SOCK_CLOSED)
+      return 0;
+  }
+  
+  return 1;
+}
+
+void Client::write(uint8_t b) {
+  send(_sock, &b, 1);
+}
+
+int Client::available() {
+  return getSn_RX_RSR(_sock);
+}
+
+int Client::read() {
+  uint8_t b;
+  if (!available())
+    return -1;
+  recv(_sock, &b, 1);
+  return b;
+}
+
+void Client::flush() {
+  while (available())
+    read();
+}
+
+void Client::stop() {
+  close(_sock);
+  disconnect(_sock);
+  EthernetClass::_server_port[_sock] = 0;
+}
+
+uint8_t Client::connected() {
+  uint8_t s = status();
+  return !(s == SOCK_LISTEN || s == SOCK_CLOSED || (s == SOCK_CLOSE_WAIT && !available()));
+}
+
+uint8_t Client::status() {
+  return getSn_SR(_sock);
+}
+
+// the next three functions are a hack so we can compare the client returned
+// by Server::available() to null, or use it as the condition in an
+// if-statement.  this lets us stay compatible with the Processing network
+// library.
+
+uint8_t Client::operator==(int p) {
+  return _sock == 255;
+}
+
+uint8_t Client::operator!=(int p) {
+  return _sock != 255;
+}
+
+Client::operator bool() {
+  return _sock != 255;
+}