Update the clock and battery state every minute

2-touchmenu-update-clock.lua

-- a patch for updating the touch menu clock every minute
-- Version 2.0: use closeMenu() to unschedule
-- Version 3.0: use onLeaveStandby to update, too

-- This is just a quick hack, which updates the whole menu.
-- It would be more efficient, if only the TouchMenu.time_info widget would get updated.

local UIManager = require("ui/uimanager")

local TouchMenu = require("ui/widget/touchmenu")
local updateItems_orig = TouchMenu.updateItems
local closeMenu_orig = TouchMenu.closeMenu

TouchMenu.updateItems = function(self)
    UIManager:unschedule(self.updateItems)
    -- Run original code
    updateItems_orig(self)

    UIManager:scheduleIn(60.5 - tonumber(os.date("%S")), self.updateItems, self)
end

TouchMenu.closeMenu = function(self)
    UIManager:unschedule(self.updateItems)
    closeMenu_orig(self) -- this calls onClose
end

TouchMenu.onLeaveStandby = function(self)
    TouchMenu.updateItems(self)
end