Today, I encountered a problem with the IARAVR interrupt service routine while debugging the program: this kind of pragma may not be used... I spent an hour debugging and found a problem that almost made me collapse.
Take the timer counter 0 interrupt service routine as an example:
#pragma vector=TIMER0_OVF_vect
_interrupt void Timer0(void)
{
. . . . .
. . . . . . .
}
I spent a long time debugging but didn't find any errors. When I looked at the official examples, I accidentally discovered that I needed to add two "underscores" before interrupt. Oh my god...
#pragma vector=TIMER0_OVF_vect
__interrupt void Timer0(void)
{
. . . . .
. . . . . . .
}
Comparing the two paragraphs above, especially when they are placed on two programs, although some differences can be seen, the length of the underline is generally considered to be due to display differences between different software, so it is considered to be the same underline. . .
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