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Don't try to write FUNC_IN_SEL_CFG of non-matrix signal (#3849)

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Dániel Buga 2025-07-23 09:41:18 +02:00 committed by GitHub
parent 9eb89a3de5
commit 818d30972d
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1 changed files with 11 additions and 5 deletions
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16
esp-hal/src/gpio/interconnect.rs
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@ -424,17 +424,23 @@ impl Signal<'_> {
Signal::Level(_) => true,
};
if !signal.can_use_gpio_matrix() {
assert!(
!use_gpio_matrix,
"{:?} cannot be routed through the GPIO matrix",
signal
);
// At this point we have set up the AF. The signal does not have a `func_in_sel_cfg`
// register, and we must not try to write to it.
return;
}
let input = match self {
Signal::Pin(pin) => pin.number(),
Signal::Level(Level::Low) => property!("gpio.constant_0_input"),
Signal::Level(Level::High) => property!("gpio.constant_1_input"),
};
assert!(
signal.can_use_gpio_matrix() || !use_gpio_matrix,
"{:?} cannot be routed through the GPIO matrix",
signal
);
// No need for a critical section, this is a write and not a modify operation.
let offset = property!("gpio.func_in_sel_offset");
GPIO::regs()