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mimxrt/machine_pin: Clear IRQ flag when enabling or disabling IRQ.

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Preventing already pending IRQs to fire when not expected.

Signed-off-by: robert-hh <robert@hammelrath.com>
This commit is contained in:
robert-hh 2024-06-07 09:22:46 +02:00 committed by Damien George
parent 36108a41d0
commit 87adf11dd2
1 changed files with 3 additions and 0 deletions
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3
ports/mimxrt/machine_pin.c
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@ -407,6 +407,7 @@ static mp_obj_t machine_pin_irq(size_t n_args, const mp_obj_t *pos_args, mp_map_
if (args[ARG_handler].u_obj == mp_const_none) { if (args[ARG_handler].u_obj == mp_const_none) {
// remove the IRQ from the table, leave it to gc to free it. // remove the IRQ from the table, leave it to gc to free it.
GPIO_PortDisableInterrupts(self->gpio, 1U << self->pin); GPIO_PortDisableInterrupts(self->gpio, 1U << self->pin);
GPIO_PortClearInterruptFlags(self->gpio, 1U << self->pin);
MP_STATE_PORT(machine_pin_irq_objects[index]) = NULL; MP_STATE_PORT(machine_pin_irq_objects[index]) = NULL;
return mp_const_none; return mp_const_none;
} }
@ -445,6 +446,8 @@ static mp_obj_t machine_pin_irq(size_t n_args, const mp_obj_t *pos_args, mp_map_
GPIO_PinSetInterruptConfig(self->gpio, self->pin, irq->trigger); GPIO_PinSetInterruptConfig(self->gpio, self->pin, irq->trigger);
// Enable the specific Pin interrupt // Enable the specific Pin interrupt
GPIO_PortEnableInterrupts(self->gpio, 1U << self->pin); GPIO_PortEnableInterrupts(self->gpio, 1U << self->pin);
// Clear previous IRQs
GPIO_PortClearInterruptFlags(self->gpio, 1U << self->pin);
// Enable LEVEL1 interrupt again // Enable LEVEL1 interrupt again
EnableIRQ(irq_num); EnableIRQ(irq_num);
} }