Go4Expert - Problem with TIMER ON DELAY

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Problem with TIMER ON DELAY

Hi all,
i am programing a microprocessor. The system part of the application is already done, so i have to write the logic for all the inputs and the outputs ...

In the system part of the the application there si a function UINT32 CSS_GetTime (UINT16 *ms) that gets the time in seconds and miliseconds since last reboot.

ms - is the pointer that holds the number of miliseconds (0 ..999). Can be NULL if miliseconds are not needed.

So i wrote the code something like this:

Code:



UINT32 get_time;

UINT32 delay_time = 3;



if input1 {

       get_time = CSS_GetTime(NULL);

       if get_time > delay_time {

                        output1 = 1;

     } else output1 = 0;

}

This part of the program only works after the reset, because the get_time is never set to zero. Any ideas how can i do this?

I also tryed with miliseconds. Code:

Code:

UINT16 get_mili_sec=0;

UINT32 get_time;

UINT32 time_increment;

UINT32 delay_time = 3;

UINT32 curr_time;



if input1 {

       get_time = CSS_GetTime (&get_mili_sec);

          if (get_time == 999) {

                   time_increment = 1;

          } else time_increment = 0;

          curr_time += time_increment;

          if (curr_time > delay_time) {

                 output = 1;

                 curr_time = 0;

          } else output = 0;

                    curr_time = 0;

}

This part of the program also dosent work. Can somebody tell me what am i doing wrong?

Thx for your time and help,
Best regards,
BoSCHoW.

Re: Problem with TIMER ON DELAY

The timer, is working now. But once the output is set i cannot put it to 0 even if the input is pressed for a shorter time then 3000 ms. I dont know what i did wrong, can somebody help me. Below is the code that i used ...

Code:

if (contactor == 1) output1=1;

else output1=0;



// RS FLIP FLOP SETS FINAL OUTPUT

 (!key_not_pressed 

    && (time_key_active== 0))      contactor = 0;

else if (!key_not_pressed 

         && (time_key_active == 1)) contactor = 1;

else if (key_not_pressed 

         && (time_key_active == 0)) contactor = 0;

else if (key_not_pressed 

         && (time_key_active == 1)) contactor = 0;



//     LOGIC AND - chaks the status of the key

if ((key_check_status ==0)    // check key status failed 

     && input1) // key pressed

                key_not_pressed = 0;

else if ((key_check_status ==0)  // check key status failed

     && !input1) // key not pressed

                key_not_pressed  = 0;

else if ((key_check_status ==1) // check key status success

     && !input1)  // key not presset 

                key_not_pressed  = 1;

else if ((preverjanje_stanja_tipke==1)        // check key stats success

     &&  input1) // key pressed

                key_not_pressed  = 0;



// FLIP FLOP - CHECK KEY STATUS

if (input1  // key pressed

    && (time_key_active == 0))        // key not active

                preverjanje_stanja_tipke = 1;

else if (input1 // key pressed

    && (time_key_active == 1)) // key active

    key_check_status = 0;

else if (!input1 // key not pressed 

    && (time_key_active == 0)) // key not active

    key_check_status = 0;

else if (!input1 // key not pressed 

    && (time_key_active== 1)) // key active

    key_check_status = 0;



 //                 TIMER STARTER

if (input1) {

    begin_s = CSS_GetTime(&begin_ms);

      do {

        time_key_active= 0;

        now_ms = 0;

        now_s = CSS_GetTime(&now_ms);

        passed_time = (now_s - begin_s) * 1000 + (now_ms - begin_ms);

      

      }

      while (passed_time < 3000);

      time_key_active= 1;

}

Thanks for your time and help,
best regards,
BoSCHoW.