helloleong
New Member
The PIC16F727 does not have interrupt priority it self
So my code have 3 interrupt, and the simplified code are as below
I have to set PORTB interrupt as high priority to capture the wiegand data.
Some time the 1st wiegand data was miss.
If I take out the Timer 0 interrupt if statement, all wiegand data are able to be fully capture.
So how can I immediately exit this if statement and service PORTB interrupt immediately?
Thank you very much.
So my code have 3 interrupt, and the simplified code are as below
Code:
void interrupt isr(void)
{
if (RBIE && RBIF && (~PORTB & 0x30)){...}
if (SSPIE && SSPIF) { SSPIF = 0;}
if (T0IE && T0IF)
{
//If the processor servicing Timer 0 interrupt,
//and at the same time PORTB interrupt occur.
//How can I immediately exit this if statement
//and service PORTB interrupt immediately?
...
}
}I have to set PORTB interrupt as high priority to capture the wiegand data.
Some time the 1st wiegand data was miss.
If I take out the Timer 0 interrupt if statement, all wiegand data are able to be fully capture.
So how can I immediately exit this if statement and service PORTB interrupt immediately?
Thank you very much.