Function usb_get_queuehead

src/phys/usb.rs:94–103

Retrieve the specific queue head based on endpoint and direction. Returns a mutable UsbEndpointQueueHead.

(endpoint: usize, tx: bool)

///
/// Returns a mutable UsbEndpointQueueHead.
pub fn usb_get_queuehead(endpoint: usize, tx: bool) -> &'static mut UsbEndpointQueueHead {
    unsafe {
        let index = match tx {
            true => endpoint * 2 + 1,
            false => endpoint * 2,
        };

        return &mut ENDPOINT_HEADERS[index];
    }
}

/// Boot up the usb clocks. This method
/// takes many milliseconds to run.