pub fn with_sck(mut self, sclk: impl PeripheralOutput<'d>) -> Self {
        self.pins.sclk_pin = self.connect_output_pin(sclk, self.driver().info.sclk);

        self
    }
Assign the SCK (Serial Clock) pin for the SPI instance.

Configures the specified pin to push-pull output and connects it to the
SPI clock signal.

Disconnects the previous pin that was assigned with `with_sck`.
esp-hal/src/spi/master.rs