liuhan 380f5635b6 components/lwip: add SNTP function feature ... Develop and Compile SNTP function based on LWIP core code, see lwip/apps/sntp file.		2016-09-01 19:22:36 +08:00
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lwip	components/lwip: add SNTP function feature	2016-09-01 19:22:36 +08:00