Posted on September 04, 2006 at 07:09Using the ST7 321 µC I have following problem:
On PB0 (ei2-Interrupt) I have to detect rising and falling edge, which
is realized by switching sensivity by the IPB Flag.
On Port B the other pins are used by ei3-IRQ (falling edge only).
On every detection of the signal-edge I get a double IRQ (two for falling
and two for rising).
In the ei2-ISR execution I test the Level of the PB0 Signal and Toggle the IPB-Flag.
What is the reason and how can it be handled correctly?
