Fixups for wiznet 5500 driver

drivers/wiznet5k/ethernet/socket.c

@@ -286,7 +286,7 @@ int32_t WIZCHIP_EXPORT(send)(uint8_t sn, uint8_t * buf, uint16_t len)
       if(tmp & Sn_IR_SENDOK)
       {
          setSn_IR(sn, Sn_IR_SENDOK);
-         #if _WZICHIP_ == 5200
+         #if _WIZCHIP_ == 5200
             if(getSn_TX_RD(sn) != sock_next_rd[sn])
             {
                setSn_CR(sn,Sn_CR_SEND);
@@ -525,6 +525,7 @@ int32_t WIZCHIP_EXPORT(recvfrom)(uint8_t sn, uint8_t * buf, uint16_t len, uint8_
    			// read peer's IP address, port number & packet length
     			sock_remained_size[sn] = head[0];
    			sock_remained_size[sn] = (sock_remained_size[sn] <<8) + head[1];
+   			sock_remained_size[sn] -= 2; // len includes 2 len bytes
    			if(sock_remained_size[sn] > 1514) 
    			{
    			   WIZCHIP_EXPORT(close)(sn);

drivers/wiznet5k/ethernet/wizchip_conf.h

@@ -130,7 +130,7 @@
  */
 #define _WIZCHIP_IO_BASE_              0x00000000  // 
 
-#if _WIZCHIP_IO_MODE_ & _WIZCHIP_IO_MODE_BUS
+#if _WIZCHIP_IO_MODE_ & _WIZCHIP_IO_MODE_BUS_
    #ifndef _WIZCHIP_IO_BASE_
       #error "You should be define _WIZCHIP_IO_BASE to fit your system memory map."
    #endif

drivers/wiznet5k/internet/dns/dns.c

@@ -15,6 +15,7 @@
 //!         3. Remove the unused define
 //!         4. Integrated dns.h dns.c & dns_parse.h dns_parse.c into dns.h & dns.c
 //!       <2013/12/20> V1.1.0
+//!       <2018/10/04> Modified HAL_GetTick for use with CircuitPython by Nick Moore
 //!
 //! \author Eric Jung & MidnightCow
 //! \copyright
@@ -51,6 +52,7 @@
 
 #include <string.h>
 #include <stdlib.h>
+#include "tick.h"
 
 //#include "Ethernet/socket.h"
 //#include "Internet/DNS/dns.h"
@@ -121,7 +123,11 @@ uint8_t* pDNSMSG;       // DNS message buffer
 uint8_t  DNS_SOCKET;    // SOCKET number for DNS
 uint16_t DNS_MSGID;     // DNS message ID
 
-extern uint32_t HAL_GetTick(void);
+
+uint32_t HAL_GetTick(void) {
+    return ticks_ms;
+}
+
 uint32_t hal_sys_tick;
 
 /* converts uint16_t from network buffer to a host byte order integer. */