While problem

[samiassaad]

Posted on March 14, 2011 at 19:53

While problem

[Tesla DeLorean]

Posted on May 17, 2011 at 14:27

if(SysTick_Config(SystemCoreClock / 360000) )   // 5ms interrupts

returns an error that cant load it ; any solution for 5ms interrupt? I am using the new library 3.4.

X = 200, You asked the value of X if(SysTick_Config(SystemCoreClock / 200) )   // 5ms interrupts or if(SysTick_Config(360000) )   // 5ms interrupts

[samiassaad]

Posted on May 17, 2011 at 14:27 Thank you my problem is this  if(SysTick_Config(SystemCoreClock / 1000) )   // 1ms interrupts now I get every 1ms an interupt; in the system tick handle I increment main_delay++; then in the main routine I check while(main_delay<3000); this should wait 3 sec but it wait about  10 sec . what could be the problem ? again thank you clive

[Tesla DeLorean]

Posted on May 17, 2011 at 14:27

Perhaps your clocks are not as you expect. Would suggest you toggle a GPIO in your SysTick IRQ, and measure that on a scope. Should see a 500 Hz signal (period 2ms, 1ms High, 1ms Low).

Check you input clocks. Check internal clocks and settings. Use MCO pin. Make sure your project has the correct target, and that any model settings are correct. ZIP up a complete project example, and post it as an attachment. Personally I'd use the following construct starttick = systicker; while((systicker - starttick) < 3000);

[samiassaad]

Posted on May 17, 2011 at 14:27 Thank you alot , please check the attachment.