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IRQ enabling guard (when no callback set) (#1504)

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Mr. Jake 2024-07-07 19:57:50 +02:00 committed by GitHub
parent 74b9ea4d46
commit 86aab81c47
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1 changed files with 9 additions and 1 deletions
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10
src/rp2_common/hardware_gpio/gpio.c
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@ -174,6 +174,13 @@ static void _gpio_set_irq_enabled(uint gpio, uint32_t events, bool enabled, io_i
}
void gpio_set_irq_enabled(uint gpio, uint32_t events, bool enabled) {
// either this call disables the interrupt
// or callback should already be set (raw or using gpio_set_irq_callback)
// this protects against enabling the interrupt without callback set
assert(!enabled
|| (raw_irq_mask[get_core_num()] & (1u<<gpio))
|| callbacks[get_core_num()]);
// Separate mask/force/status per-core, so check which core called, and
// set the relevant IRQ controls.
io_irq_ctrl_hw_t *irq_ctrl_base = get_core_num() ?
@ -182,8 +189,9 @@ void gpio_set_irq_enabled(uint gpio, uint32_t events, bool enabled) {
}
void gpio_set_irq_enabled_with_callback(uint gpio, uint32_t events, bool enabled, gpio_irq_callback_t callback) {
gpio_set_irq_enabled(gpio, events, enabled);
// first set callback, then enable the interrupt
gpio_set_irq_callback(callback);
gpio_set_irq_enabled(gpio, events, enabled);
if (enabled) irq_set_enabled(IO_IRQ_BANK0, true);
}