电能表SNTP对时的源码，通过lwip发送ntp的报文给服务器，收到数据后计算时间，与本机时间相差不超过五分钟， 即修改本系统的时间。MCU采用的是LPC1768。-sntp lwip lpc1768-Meter Source SNTP on time, to the server, after receiving the data computation time by lwip send ntp packets, the difference in time with the machi