Pulsecapture_isr is slow

maxneo · Joined: 07 Sep 2010 Posts: 35

Hello I have a problem with timing see the example.

Pulsecapture_isr:
   Cnt = Capture1 'Get the current pulse value
   Timer 1 = 0
   'If Pinb.0 = 1 Then
'Tccr1b.ices1 = 0
'Else
'Tccr1b.ices1 = 1
'End If
Toggle Tccr1b.ices1
   If Cnt> Syncpulse Then 'Check for sync pulse
      Sync = Cnt 'save the current pulse value for debug
      Z = 1
                                          'Sets the index to the first channel
   Elseif Z <4 Then 'Assign 1-3 and then wait for the sync pulse
      Chan (z) = Cnt 'Assign the pulse value to the proper channel
      Incr Z 'next channel ...
      If Z = 4 Then Z = 0
   End If

I test Pinb.0 to see if it is hay or low, but the routine is to slow sometimes not found the pulse so I took it off and put to toggle and it works but it feel not quite sure. As to my question, I can do this routine a little faster for exampel with asm grateful for the answer.

(BASCOM-AVR version : 2.0.7.8 )