I made a clock in mbed. mbed has RTC built-in. A convenient function is prepared for in the rtc_time function group of mbed.h. Because data are provided at the time when they give unix timestamp and ask it at suitable distance, a format to like it can be set and displays it to LCD. If unix timestamp is provided from web, it becomes more convenient. See: http://blogs.yahoo.co.jp/jf1vrr_station/19803647.html (Japanese)
History
Rev. 0.01A 2011/04/18
2011-04-18, by jf1vrr [Mon, 18 Apr 2011 05:58:23 +0000] rev 0
Rev. 0.01A 2011/04/18