• State Not Answered
  • Locked Locked
  • Replies 14 replies
  • Subscribers 21 subscribers
  • Views 1904 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Problems with Timer1 and 2 of SAB80C535

Andy Sturm

Morning,

I have some stupid troubles with my SAB80C535 µP. I'm trying to read a acceleration sensor (ADXL202JE) with timer 1 and 2. It works aproximatily fine, excepting the "turbulent" resolution, when the timers work separately. But when i put the two timers together in the main programm then all is messed up. The equation is all disturbed and i get astronomical numbers close to ininit or zero. Can it be posible that the timer 1 and 2 cant work together or are there any priority confuses??
Its driving me crazy !!!!!

Thanks for any answer....

Parents
  • 0 in reply to erik malund

    The first timer that starts is the Timer 1:

            while (test_Y == 0)
        {
                        IE1 = 0;
                        TMOD = TMOD | 0x90;
                        TR1 = 1;
                        EX1 = 1;
        }


    The while statement is there so the program can't change to anouther while statement. It waits till the interrupt of timer1 is over and then goes to the next statement. I dont know if this is the problem. Because even if i put timer 1 first or second it doesn't matter, the reaction is the same. What i am seeing on the Timer 1 register is 0. That meens he doesent start o something like that. How could that be?

Reply
  • 0 in reply to erik malund

    The first timer that starts is the Timer 1:

            while (test_Y == 0)
        {
                        IE1 = 0;
                        TMOD = TMOD | 0x90;
                        TR1 = 1;
                        EX1 = 1;
        }


    The while statement is there so the program can't change to anouther while statement. It waits till the interrupt of timer1 is over and then goes to the next statement. I dont know if this is the problem. Because even if i put timer 1 first or second it doesn't matter, the reaction is the same. What i am seeing on the Timer 1 register is 0. That meens he doesent start o something like that. How could that be?

Children