Function ruspiro_gpio::handle_gpio_bank0

#[export_name = "__irq_handler__GpioBank0"]
#[no_mangle]
pub unsafe extern "C" fn handle_gpio_bank0(tx: Option<IsrSender<Box<dyn Any>>>)

Implement interrupt handler for GPIO driven interrupts from bank 0 (GPIO 0..31)

Safety

As this handler is only called once at a time for the GPIO bank 0 we can safely access the static handler array. The only second place is from within the Gpio Singleton accessor, that when accessed has the interrupts disabled.