C# synchronized counter time with the system timer

[dann11]

Hi! I am making a timer that counts by second.

my timer ticks every 100ms.

my simply coded my timer as.

if (oneSec < 10) oneSec = oneSec + 1;
			else
			{
				oneSec = 0;
				counter++;
			}

with these code, the number increments by 3 secs. can you please help me write the exact equation for it to count exactly per seconds.

 

[andre_luis]

with these code, the number increments by 3 secs

In preemptive operational systems ( which it is supposed to be your case ) it is not possible to accurately generate tic time at short intervals. The only feasible option is to use the Interrupt (IRQ) feature for this. In the past I have done this by external interruption with a crystal-timed peripheral board, sending serial preamble command at a precisely defined rate, but I believe there is some better tricky way to do that by using internal system resourses available on the mainboard.