| To use SNTP support, add define CONFIG_CMD_SNTP to 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. |
