pit programming
Posted: Sun Apr 20, 2008 9:57 pm
Hi,
In the tutorial, you say:
"Counter 0's OUT line indirectly connects to the PIC's IR0 line. Knowing that, when the IR0 line is low, the PIC will call the IRQ 0 handler defined by us. "
What is "Connecting Indirectly"?
Why will the PIC call the IRQ 0 handler defined by us,when the IR0 line is low?(It should be high)
Can you explain these in detail?
Thanks.
In the tutorial, you say:
"Counter 0's OUT line indirectly connects to the PIC's IR0 line. Knowing that, when the IR0 line is low, the PIC will call the IRQ 0 handler defined by us. "
What is "Connecting Indirectly"?
Why will the PIC call the IRQ 0 handler defined by us,when the IR0 line is low?(It should be high)
Can you explain these in detail?
Thanks.