======RTC======

=====参考URL=====
https://sites.google.com/site/gpsnmeajp/electricmemo/flashairnortcwo-shiu

=====ライブラリの準備=====
次のフォルダにライブラリを保存
<code>
  /SD_WLAN/LUA/LIB/libFlashTime.lua
</code>

=====レジスタから時刻を取得=====
https://gpsnmeajp.blogspot.jp/2016/06/flashair.html?spref=tw
<code>
DL = string.sub(fa.ReadStatusReg(),225,226)
DH = string.sub(fa.ReadStatusReg(),227,228)
TL = string.sub(fa.ReadStatusReg(),229,230)
TH = string.sub(fa.ReadStatusReg(),231,232)
z = tonumber(DH..DL..TH..TL,16)
Year,Month,Day,Hour,min,sec = t.GetLocalTimeFromFATtime(z); 
print("RegTime "..Year.."/"..Month.."/"..Day.." "..Hour..":"..min..":"..sec.."");
</code>