Function r3_port_std::pend_interrupt_line

pub fn pend_interrupt_line<System: PortInstance>(
    num: InterruptNum
) -> Result<(), PendInterruptLineError>

Pend an interrupt line from an external thread.

It's illegal to call this method from a thread managed by the port (i.e., you can't call it from a task or an interrupt handler). Use r3::kernel::InterruptLine::pend instead in such cases.