WebHMI Docs

The GetTime function returns table with local time information. sec field contains seconds in Unixtime format. ns field contains nanoseconds passed since begin of current second.

This function is available since WebHMI version 3.6

Example:

GetTime

function main (userId)
    local time = GetTime();
    INFO("Seconds: " .. time.sec);
    INFO("Nanoseconds:" .. time.ns);
end

Delay

function main (userId)
 
        --  Uncomment this part to measure the time spent
                        -- local start_time = GetTime();
        --
    Delay(100.25, GetTimePrecise())    
 
 
        --  Uncomment this part to measure the time spent
                        -- local cur_time = GetTime();     local cur_sec, cur_ns =  cur_time.sec, cur_time.ns
                        -- local time_spent_sec, time_spent_ns = cur_sec - start_time.sec, cur_ns - start_time.ns
                        -- local millseconds_spent = time_spent_sec * 1000 + time_spent_ns / 1000000
                        -- ERROR("Time spent ms = " .. millseconds_spent)
        -- 
 
end
 
function GetTimePrecise()
    local start_time = GetTime();
    return   start_time.sec * 1000^3  + start_time.ns  
end
 
function Delay (milliseconds, precise_start_time)
    repeat
        delay_ns = milliseconds * 1000000
        local cur_time = GetTime();
        time_over = GetTimePrecise() > (precise_start_time + delay_ns)
    until time_over
end

GetReg filtering

function main (userId)
 
    val1 = GetReg(1) or 0 -- if GetReg is nil, then it will be equal to 0
    TRACE("val1 " ..tostring(val1))
	val2 = GetReg("temperature")
	TRACE("val2 " ..tostring(val2))
 
 
 
	val2_filtered = (val2 or 0) -- if val2 is nil, then it will be equal to 0 too.
	TRACE("val2_filtered " ..tostring(val2_filtered))
    sum = val1 + val2_filtered
 
    TRACE(sum)
 
end