rohan gala
This is WIZnet Ethernet Interface using Hardware TCP/IP chip, W5500, W5200 and W5100. One of them can be selected by enabling it in wiznet.h.
Fork of
WIZnet_Library
by 
WIZnet
Diff: WIZnetInterface/DHCPClient/DHCPClient.h
- Revision:
- 0:b72d22e10709
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WIZnetInterface/DHCPClient/DHCPClient.h Thu May 08 03:57:58 2014 +0000
@@ -0,0 +1,55 @@
+// DHCPClient.h 2013/4/10
+#ifndef DHCPCLIENT_H
+#define DHCPCLIENT_H
+#include "wiznet.h"
+#include "UDPSocket.h"
+
+#define DHCP_OFFSET_OP 0
+#define DHCP_OFFSET_XID 4
+#define DHCP_OFFSET_YIADDR 16
+#define DHCP_OFFSET_SIADDR 20
+#define DHCP_OFFSET_OPTIONS 240
+#define DHCP_MAX_PACKET_SIZE 600
+
+// DHCP Message Type
+#define DHCPDISCOVER 1
+#define DHCPOFFER 2
+#define DHCPREQUEST 3
+#define DHCPDECLINE 4
+#define DHCPACK 5
+#define DHCPNAK 6
+#define DHCPRELEASE 7
+#define DHCPINFORM 8
+
+class DHCPClient {
+public:
+ DHCPClient();
+ int setup(int timeout_ms = 15*1000);
+ uint8_t chaddr[6]; // MAC
+ uint8_t yiaddr[4]; // IP
+ uint8_t dnsaddr[4]; // DNS
+ uint8_t gateway[4];
+ uint8_t netmask[4];
+ uint8_t siaddr[4];
+private:
+ int discover();
+ int request();
+ int offer(uint8_t buf[], int size);
+ void add_buf(uint8_t* buf, int len);
+ void fill_buf(int len, uint8_t data = 0x00);
+ void add_buf(uint8_t c);
+ void add_option(uint8_t code, uint8_t* buf = NULL, int len = 0);
+ bool verify(uint8_t buf[], int len);
+ void callback();
+ UDPSocket* m_udp;
+ Endpoint m_server;
+ uint8_t xid[4];
+ bool exit_flag;
+ Timer m_interval;
+ int m_retry;
+ uint8_t m_buf[DHCP_MAX_PACKET_SIZE];
+ int m_pos;
+ WIZnet_Chip* eth;
+};
+#endif //DHCPCLIENT_H
+