Function mynewt::kernel::os::os_dev_open

pub unsafe extern "C" fn os_dev_open(
    devname: *const c_char, 
    timo: u32, 
    arg: *mut c_void
) -> *mut os_dev

Open a device.

• dev: The device to open
• timo: The timeout to open the device, if not specified.
• arg: The argument to the device open() call.

Return: 0 on success, non-zero on failure.