alex/rp-hal-boards
1
0
Fork 0
mirror of https://github.com/italicsjenga/rp-hal-boards.git synced 2024-12-23 12:41:31 +11:00
Code Issues Packages Projects Releases Wiki Activity

GPIO IRQ example: add check for interrupt source (#401)

Browse source
This commit is contained in:
9names 2022-07-28 10:14:20 +10:00 committed by GitHub
parent 96552b28c5
commit c7acafda3c
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
rp2040-hal/examples/gpio_irq_example.rs
View file

@ -174,14 +174,17 @@ fn IO_IRQ_BANK0() {
// these will be of type `&mut LedPin` and `&mut ButtonPin`, so we don't have
// to move them back into the static after we use them
let (led, button) = gpios;
// Check if the interrupt source is from the pushbutton going from high-to-low.
// Note: this will always be true in this example, as that is the only enabled GPIO interrupt source
if button.interrupt_status(EdgeLow) {
// toggle can't fail, but the embedded-hal traits always allow for it
// we can discard the return value by assigning it to an unnamed variable
let _ = led.toggle();
// toggle can't fail, but the embedded-hal traits always allow for it
// we can discard the return value by assigning it to an unnamed variable
let _ = led.toggle();
// Our interrupt doesn't clear itself.
// Do that now so we don't immediately jump back to this interrupt handler.
button.clear_interrupt(EdgeLow);
// Our interrupt doesn't clear itself.
// Do that now so we don't immediately jump back to this interrupt handler.
button.clear_interrupt(EdgeLow);
}
}
}