Update SDK to 1.5.2 (#1653)

patch included: http://bbs.espressif.com/viewtopic.php?f=46&t=1856

cores/esp8266/core_esp8266_phy.c

@@ -239,7 +239,7 @@ static const uint8_t ICACHE_FLASH_ATTR phy_init_data[128] =
     // 1: RF init only do TX power control CAL, others using RF CAL data in flash, it takes about 20ms for RF init
     // 2: RF init no RF CAL, using all RF CAL data in flash, it takes about 2ms for RF init  (same as 0?!)
     // 3: RF init do all RF CAL, it takes about 200ms for RF init
-    [114] = 2
+    [114] = 1
 };
 
 // These functions will be overriden from C++ code.

tools/sdk/License

@@ -1,68 +1,24 @@
-ESPRESSIF GENERAL PUBLIC LICENSE
+ESPRSSIF MIT License
 
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tools/sdk/changelog.txt

@@ -1,5 +1,71 @@
+ESP8266_NONOS_SDK_V1.5.2_16_01_29 Release Note
+----------------------------------------------
+
+Resolved Issues (Bugs listed below apply to Bug Bounty Program):
+1. Strange os_timer_arm behavior.
+
+Optimization:
+1. Added SDIO slave driver. Developers are now able to implement AT commands based on SDIO interface by themselves.
+2. Optimized SSL shakehand.
+3. Upgraded second-level boot, enabled HSPI flash.
+4. Added AirKiss library,
+5. Updated sample code smart_config (esp_iot_sdk\examples\smart_config).
+6. The 114th byte of esp_init_data_default.bin is modified to be 1. Please use the latest esp_init_data_default.bin.
+7. Added sample code at_espconn (esp_iot_sdk\examples\at_espconn), showing how to transmit AT commands via the internet.
+
+Newly added APIs:
+1. SDIO slave APIs
+sdio_slave_init: initialize SDIO slave
+sdio_load_data: upload data to SDIO buffer.
+sdio_register_recv_cb: register Callbacks of data received by SDIO.
+2. AirKiss APIs
+airkiss_version: get version information of AirKiss.
+airkiss_lan_recv: used to detect and analyze AirKiss data packets.
+airkiss_lan_pack: used to analyze AirKiss data packets, and to organize response packets waiting to be responded.
+3. AT UART simulation APIs
+at_fake_uart_enable : enable AT UART simulation.
+at_fake_uart_rx : AT UART RX for simulation.
+
+Release notes of AT_v0.60:
+1. Added command AT+CWLAPOPT, which is used to config the attribute of the returned value of the command AT+CWLAP.
+2. Added command AT+WPS, WPS supported.
+3. Added command AT+MDNS, MDSN supported.
+4. Added command AT+CWSTARTDISCOVER/AT+CWSTOPDISCOVER. AirKiss intranet detecting function is supported.
+5. Optimized command AT+CIPSTART. The device can function as SSL client, and one SSL connection can be created at most.
+6. Optimized AT+UART and related command.
+
+esp_iot_sdk_v1.5.1_16_01_08 Release Note
+Resolved Issues (Bugs listed below apply to Bug Bounty Program):
+1.espconn_abort may cause system crash.
+
+Optimization:
+1.Optimize the data receiving process under TCP connection.
+2.Optimize low MAC and increase stability of the software.
+3.Optimize watchdog feeding process.
+4.Optimize softAP working mode so that some stations can be easily connected.
+5.Optimize station working mode, enabling connection even when the SSID of the AP has changed.
+6.Optimize station working mode, and increase router<65><72>s compatibility during the connection process.
+7.Optimize SSL shakehand.
+8.Optimize espconn internal timer.
+9.Optimize UDP transmission.
+10.Improve the flash writing process.
+11.Strenthen WPA2 security protocols.
+12.Improve data sending ability.
+13.Straighten the control capability of GPIO16 under light sleep mode.
+14.boot.bin is upgrade to version 1.5, resolving boot failure when firmware is upgraded over the air (OTA).
+
+AT release note<74><65>
+1.Optimize the process of establishing TCP server via AT command.
+2.Optimize UART-WiFi transparent transmission mode via AT command.
+
+Please be noted that with the release of ESP8266_NONOS_SDK_V1.5.0, AT firmware is too large to use 4Mbit Flash. Please choose flash with at least 8Mbit capacity.
+
+Please be noted that firmware upgrade over-the-air process is changed a bit. We will upgrade the latest AT firmware to Espressif Cloud server only after it has been tested and the overall performance is guaranteed. Users may not be able to use AT+CIUPDATE in ESP8266_NONOS_SDK_V1.5.0 and other more advanced versions.
+
+
 esp_iot_sdk_v1.5.1_16_01_08 Release Note
 ----------------------------------------
+
 Resolved Issues (Bugs listed below apply to Bug Bounty Program):
 1.espconn_abort may cause system crash.
 

tools/sdk/include/ets_sys.h

@@ -40,6 +40,7 @@ typedef struct _ETSTIMER_ {
 typedef void (*int_handler_t)(void*);
 
 #define ETS_SLC_INUM        1
+#define ETS_SDIO_INUM       1
 #define ETS_SPI_INUM        2
 #define ETS_GPIO_INUM       4
 #define ETS_UART_INUM       5
@@ -145,6 +146,16 @@ inline uint32_t ETS_INTR_PENDING(void)
     ETS_INTR_DISABLE(ETS_SLC_INUM)
 
 
+#define ETS_SDIO_INTR_ATTACH(func, arg) \
+    ets_isr_attach(ETS_SDIO_INUM, (int_handler_t)(func), (void *)(arg))
+
+#define ETS_SDIO_INTR_ENABLE() \
+    ETS_INTR_ENABLE(ETS_SDIO_INUM)
+
+#define ETS_SDIO_INTR_DISABLE() \
+    ETS_INTR_DISABLE(ETS_SDIO_INUM)
+    
+
 void *pvPortMalloc(size_t xWantedSize, const char* file, int line) __attribute__((malloc, alloc_size(1)));
 void *pvPortRealloc(void* ptr, size_t xWantedSize, const char* file, int line) __attribute__((alloc_size(2)));
 void vPortFree(void *ptr, const char* file, int line);