Timing without timer of uC

[AliBahar]

Hi every body
I want to create C code for measuring the time of an event without using timers of any particular micro Controller.
can you help me?

 

[FvM]

The C language has no timing statements. You are talking about compiler and processor specific library functions or time related functions of an operation system.

 

[Easyrider83]

You can just increment variable till event happens. This is not very accurate method in C, but you did'nt mentioned the accuracy.

 

[AliBahar]

The C language has no timing statements. You are talking about compiler and processor specific library functions or time related functions of an operation system.

I know that. I want to create a standard C code which is supportable by all C compilers. so it must be independent from configuration methods of prepherals in CodeVision or Keil and etc.

 

[FvM]

You can just increment variable till event happens. This is not very accurate method in C, but you did'nt mentioned the accuracy.

Besides accuracy considerations, this method isn't independent from compiler and target processor details at all.

The only way to achieve portability of time/timer functions is to define an abstract interface that has to be implemented on the respective target. That's what realtime OS like Free RTOS do.

 

[andre_luis]

I want to create C code for measuring the time of an event without using timers of any particular micro Controller

The original question should be reformulated, due to even operating under some RTOS, the system much likely would stay still dependant of an internal timer to supply the tick cadency.