NEW VERSION: 1.5.0

1.  add spi flash erase protect mechanism, boot and current runing user
bin can not been erased;
2.  add memleak debug feature;
3.  fix spi overlap issue;
4.  fix call wifi_station_disconnect, disconnect event enter twice
issue;
5.  fix crash when set opmode from station to softAP in scan done
callback;
6.  modify spi flash erase/write flow, clear protect status if needed;
7.  fix rf init data sector broken issue, add user_rf_cal_sector_set,
user application MUST have this function, refer to examples;
8.  fix system parameter sector broken issue when frequently power
on/off;
9.  fix the max value of os_timer_arm;
10. fix dns issue in some routers;
11. add sntp support;
12. update smartconfig to 2.5.4;
13. update open freedom to support send beacon packet;
14. fix seldom rf not work issue after external reset;
15. fix pwm issue;
16. fix status error got by wifi_station_get_connect_status;
17. fix assert in pp;
18. fix huawei X4 connect softAP issue;
19. optimize sleep strategy；
20. add vendor IE support;
21. update libphy.a to 1055;
22. add weak function wifi_set_backup_mac to let user set MAC;
23. fix bug of lwip and optimize socket mechanism;
24. update boot loader to v1.6;
25. update esp_init_data_default.bin
26. add mbedtls support；
27. fix other bugs;

driver_lib/include/i2c_master.h

@@ -0,0 +1,169 @@
+#ifndef __I2C_MASTER_H__
+#define __I2C_MASTER_H__
+
+#include "esp8266/pin_mux_register.h"
+#define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_GPIO2_U
+#define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_GPIO4_U
+#define I2C_MASTER_SDA_GPIO 2
+#define I2C_MASTER_SCL_GPIO 4
+#define I2C_MASTER_SDA_FUNC FUNC_GPIO2
+#define I2C_MASTER_SCL_FUNC FUNC_GPIO4
+
+//#define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_GPIO2_U
+//#define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_GPIO0_U
+//#define I2C_MASTER_SDA_GPIO 2
+//#define I2C_MASTER_SCL_GPIO 0
+//#define I2C_MASTER_SDA_FUNC FUNC_GPIO2
+//#define I2C_MASTER_SCL_FUNC FUNC_GPIO0
+
+#if 0
+#define I2C_MASTER_GPIO_SET(pin)  \
+    gpio_output_set(1<<pin,0,1<<pin,0)
+
+#define I2C_MASTER_GPIO_CLR(pin) \
+    gpio_output_set(0,1<<pin,1<<pin,0)
+
+#define I2C_MASTER_GPIO_OUT(pin,val) \
+    if(val) I2C_MASTER_GPIO_SET(pin);\
+    else I2C_MASTER_GPIO_CLR(pin)
+#endif
+
+#define I2C_MASTER_SDA_HIGH_SCL_HIGH()  \
+    gpio_output_set(1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
+
+#define I2C_MASTER_SDA_HIGH_SCL_LOW()  \
+    gpio_output_set(1<<I2C_MASTER_SDA_GPIO, 1<<I2C_MASTER_SCL_GPIO, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
+
+#define I2C_MASTER_SDA_LOW_SCL_HIGH()  \
+    gpio_output_set(1<<I2C_MASTER_SCL_GPIO, 1<<I2C_MASTER_SDA_GPIO, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
+
+#define I2C_MASTER_SDA_LOW_SCL_LOW()  \
+    gpio_output_set(0, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
+
+/** \defgroup Driver_APIs Driver APIs
+  * @brief Driver APIs
+  */
+
+/** @addtogroup Driver_APIs
+  * @{
+  */
+
+/** \defgroup I2C_Driver_APIs I2C_MASTER Driver APIs
+  * @brief UART driver APIs
+  */
+
+/** @addtogroup I2C_MASTER_Driver_APIs
+  * @{
+  */
+
+/**  
+  * @brief   i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
+  * 
+  * @param   null
+  *  
+  * @return  null
+  */
+void i2c_master_gpio_init(void);
+
+/**  
+  * @brief   i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
+  * 
+  * @param  initilize I2C bus to enable i2c operations.
+  *  
+  * @return  null
+  */
+void i2c_master_init(void);
+
+#define i2c_master_wait    os_delay_us
+
+
+/**  
+  * @brief   i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
+  * 
+  * @param  set i2c to stop sending state.
+  *  
+  * @return  null
+  */
+void i2c_master_stop(void);
+
+/**  
+  * @brief   i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
+  * 
+  * @param  set i2c to start sending state.
+  *  
+  * @return  null
+  */
+void i2c_master_start(void);
+
+/**  
+  * @brief   i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
+  * 
+  * @param  set ack to i2c bus as level value.
+  *  
+  * @return  null
+  */
+void i2c_master_setAck(uint8 level);
+
+/**  
+  * @brief   confirm if peer send ack.
+  * 
+  * @param null
+  *  
+  * @return  null
+  */
+uint8 i2c_master_getAck(void);
+
+/**  
+  * @brief   read Byte from i2c bus.
+  * 
+  * @param null
+  *  
+  * @return  the byte which read from i2c bus.
+  */
+uint8 i2c_master_readByte(void);
+
+/**  
+  * @brief   write wrdata value(one byte) into i2c.
+  * 
+  * @param uint8 wrdata:write value
+  *  
+  * @return  null
+  */
+void i2c_master_writeByte(uint8 wrdata);
+
+/**  
+  * @brief   i2c_master_checkAck.
+  * 
+  * @param null
+  *  
+  * @return  the result of check ack
+  */
+bool i2c_master_checkAck(void);
+
+/**  
+  * @brief   i2c master send Ack.
+  * 
+  * @param null
+  *  
+  * @return  null
+  */
+void i2c_master_send_ack(void);
+
+/**  
+  * @brief   i2c master send Nack.
+  * 
+  * @param null
+  *  
+  * @return  null
+  */
+void i2c_master_send_nack(void);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif