GPIOTE interrupt not triggering after it was enabled

[hannes-hochreiner]

I was trying to configure an input pin to trigger an interrupt. Following the example, I set up the pin and the gpiote.

let drdy_pin = port0.p0_30.into_floating_input().degrade();
let gpiote = Gpiote::new(device.GPIOTE);
gpiote.channel0().input_pin(&drdy_pin).hi_to_lo().enable_interrupt();

However, the interrupt never triggers.

Looking at the source code, the problems seems to be that the pin number is written to the intenset and intenclr registers.

 pub fn enable_interrupt(&self) -> &Self {
        unsafe {
            self.gpiote
                .intenset
                .modify(|r, w| w.bits(r.bits() | self.pin.pin() as u32))
        }
        self
}

According to the Nordic documentation the register has a bit field for the channels. Therefore, it should be more like:

 pub fn enable_interrupt(&self) -> &Self {
        unsafe {
            self.gpiote
                .intenset
                .modify(|r, w| w.bits(r.bits() | 1 << self.channel as u32))
        }
        self
}

Same goes for disabling the interrupt.
I'll test later and prepare a PR. Feel free to assign the issue to me.