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ESP8266 NONOS SDK V2.0.0 patch 20160809

ESP8266_NONOS_SDK_V2.0.0_patch release notes

This patch is based on ESP8266_NONOS_SDK_V2.0.0. While using it, users should use .a file in the package to overwrite the corresponding files subject to SDK/lib directory.

The updates are as follows:

1. Slow connection problems in some cases have been solved.

2. Provided an interface to enable automatic calibration of frequency offset: void system_phy_freq_trace_enable(bool enable); By default, the automatic calibration of frequency offset is off. To enable it, this function should be called in user_rf_pre_init(). Its parameter is true.

Note:

Users should confirm that only when ambient temperature is higher than the normal operating temperature range that crystal oscillator requires does this function need to be enabled. In general,  this function is not recommended to be enabled if ambient temperature is lower than 80 ℃.

NON-OS SDK V2.0.0 2016.08.08
ESP8266 NONOS SDK V2.1.0 20170505

ESP8266 Non OS SDK V2.1.0.

NON-OS SDK V2.1.0 2017.05.05
ESP8266 NONOS SDK V2.2.1

ESP8266 non-OS SDK V2.2.1

NON-OS SDK V2.2.1 2018.06.08
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