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- To use SNTP support, add a define CFG_CMD_SNTP to CONFIG_COMMANDS in
- the configuration file of the board.
- The "sntp" command gets network time from NTP time server and
- syncronize RTC of the board. This command needs the command line
- parameter of server's IP address or environment variable
- "ntpserverip". The network time is sent as UTC. So if you want to
- set local time to RTC, set the offset in second from UTC to the
- enviroment variable "time offset".
- If the DHCP server provides time server's IP or time offset, you
- don't need to set the above environment variables yourself.
- Current limitations of SNTP support:
- 1. The roundtrip time is ignored.
- 2. Only the 1st NTP server IP, in the option ntp-servers of DHCP, will
- be used.
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