Update SDK to 2.0.0

- Update SDK header files and libraries to SDK 2.0.0 plus 2.0.0_16_08_09
  patch
- Remove mem_manager.o from libmain.a (replaced with umm_malloc)
- Disable switch from DIO to QIO mode for certain flash chips (saves
  IRAM space)
- Add user_rf_cal_sector_set; it points to rf_init_data sector.
- Change the way rf_init_data is spoofed.
  This is now done by wrapping spi_flash_read and returning the data we
  need during startup sequence.
- Place lwip library into flash using linker script instead of section
  attributes (saves IRAM space)

tools/sdk/lwip/include/lwip/app/espconn.h

@@ -3,6 +3,7 @@
 
 #include "lwip/dns.h"
 #include "os_type.h"
+#include "lwip/app/espconn_buf.h"
 
 #if 0
 #define espconn_printf(fmt, args...) os_printf(fmt,## args)
@@ -32,6 +33,8 @@ typedef void (* espconn_reconnect_callback)(void *arg, sint8 err);
 #define ESPCONN_ARG        -12   /* Illegal argument.        */
 #define ESPCONN_IF		   -14	 /* Low_level error			 */
 #define ESPCONN_ISCONN     -15   /* Already connected.       */
+#define ESPCONN_TIME	   -16	 /* Sync Time error			 */
+#define ESPCONN_NODATA	   -17	 /* No data can be read	     */
 
 #define ESPCONN_HANDSHAKE  -28   /* ssl handshake failed	 */
 #define ESPCONN_RESP_TIMEOUT -29 /* ssl handshake no response*/
@@ -186,6 +189,8 @@ typedef struct _espconn_msg{
 //***********Code for WIFI_BLOCK from upper**************
 	uint8 recv_hold_flag;
 	uint16 recv_holded_buf_Len;
+//*******************************************************
+	ringbuf *readbuf;
 }espconn_msg;
 
 #ifndef _MDNS_INFO

tools/sdk/lwip/include/lwip/app/espconn_buf.h

@@ -0,0 +1,60 @@
+/*
+ * ringbuf.h
+ *
+ *  Created on: Apr 22, 2016
+ *      Author: liuhan
+ */
+
+#ifndef _ESPCONN_BUF_H_
+#define _ESPCONN_BUF_H_
+
+/*
+ * ringbuffer.c
+ *
+ *  Created on: Apr 22, 2016
+ *      Author: liuhan
+ */
+#include "c_types.h"
+
+#include "ets_sys.h"
+#include "os_type.h"
+
+typedef struct ringbuf_t {
+	uint8_t *buf;
+	uint8_t *head, *tail;
+	size_t size;
+} ringbuf, *ringbuf_t;
+
+ringbuf_t ringbuf_new(size_t capacity);
+
+size_t ringbuf_buffer_size(const struct ringbuf_t *rb);
+
+void ringbuf_reset(ringbuf_t rb);
+
+void ringbuf_free(ringbuf_t *rb);
+
+size_t ringbuf_capacity(const struct ringbuf_t *rb);
+
+size_t ringbuf_bytes_free(const struct ringbuf_t *rb);
+
+size_t ringbuf_bytes_used(const struct ringbuf_t *rb);
+
+int ringbuf_is_full(const struct ringbuf_t *rb);
+
+int ringbuf_is_empty(const struct ringbuf_t *rb);
+
+const void* ringbuf_tail(const struct ringbuf_t *rb);
+
+const void* ringbuf_head(const struct ringbuf_t *rb);
+
+static uint8_t *ringbuf_nextp(ringbuf_t rb, const uint8_t *p);
+
+size_t ringbuf_findchr(const struct ringbuf_t *rb, int c, size_t offset);
+
+size_t ringbuf_memset(ringbuf_t dst, int c, size_t len);
+
+void *ringbuf_memcpy_into(ringbuf_t dst, const void *src, size_t count);
+
+void *ringbuf_memcpy_from(void *dst, ringbuf_t src, size_t count);
+
+#endif /* RINGBUF_H_ */

tools/sdk/lwip/include/lwip/app/time.h

@@ -0,0 +1,53 @@
+/*
+ * time.h
+ *
+ *  Created on: May 31, 2016
+ *      Author: liuhan
+ */
+
+#ifndef TIME_H_
+#define TIME_H_
+#include "osapi.h"
+#include "os_type.h"
+#include "lwip/sntp.h"
+
+struct timeval {
+  unsigned long  tv_sec;         /* seconds */
+  unsigned long  tv_usec;        /* and microseconds */
+};
+
+/***************************RTC TIME OPTION***************************************/
+// daylight settings
+// Base calculated with value obtained from NTP server (64 bits)
+#define sntp_base   (*((uint64_t*)RTC_STORE0))
+// Timer value when base was obtained
+#define TIM_REF_SET(value) WRITE_PERI_REG(RTC_STORE2, value)
+#define TIM_REF_GET()      READ_PERI_REG(RTC_STORE2)
+
+// Setters and getters for CAL, TZ and DST.
+#define RTC_CAL_SET(val)    do {uint32 value = READ_PERI_REG(RTC_STORE3);\
+    value |= ((val) & 0x0000FFFF);\
+    WRITE_PERI_REG(RTC_STORE3, value);\
+    }while(0)
+#define RTC_DST_SET(val)    do {uint32 value = READ_PERI_REG(RTC_STORE3);\
+    value |= (((val)<<16) & 0x00010000);\
+    WRITE_PERI_REG(RTC_STORE3, value);\
+    }while(0)
+#define RTC_TZ_SET(val)     do {uint32 value = READ_PERI_REG(RTC_STORE3);\
+    value |= (((val)<<24) & 0xFF000000);\
+    WRITE_PERI_REG(RTC_STORE3, value);\
+    }while(0)
+
+#define RTC_CAL_GET()       (READ_PERI_REG(RTC_STORE3) & 0x0000FFFF)
+#define RTC_DST_GET()       ((READ_PERI_REG(RTC_STORE3) & 0x00010000)>>16)
+#define RTC_TZ_GET()        ((((int)READ_PERI_REG(RTC_STORE3)) & ((int)0xFF000000))>>24)
+void system_update_rtc(time_t t, uint32_t us);
+time_t sntp_get_rtc_time(sint32_t *us);
+
+int  gettimeofday(struct timeval* t, void* timezone);
+void updateTime(uint32 ms);
+bool configTime(int timezone, int daylightOffset, char *server1, char *server2, char *server3, bool enable);
+time_t time(time_t *t);
+unsigned long millis(void);
+unsigned long micros(void);
+#endif /* TIME_H_ */

tools/sdk/lwip/include/lwip/sntp.h

@@ -8,6 +8,8 @@
 extern "C" {
 #endif
 
+typedef long     time_t;
+
 /** The maximum number of SNTP servers that can be set */
 #ifndef SNTP_MAX_SERVERS
 #define SNTP_MAX_SERVERS           3
@@ -24,6 +26,8 @@ extern "C" {
 #define SNTP_SERVER_DNS            1
 #endif
 
+bool sntp_get_timetype(void);
+void sntp_set_receive_time_size(void);
 /** One server address/name can be defined as default if SNTP_SERVER_DNS == 1:
  * #define SNTP_SERVER_ADDRESS "pool.ntp.org"
  */