rdxusb_open_device

rdxusb::c_api

Function rdxusb_open_device 

Source 
#[unsafe(no_mangle)]
pub extern "C" fn rdxusb_open_device(
    vid: u16,
    pid: u16,
    serial_number: *const c_char,
    close_on_dc: bool,
    buf_size: u64,
) -> i32
Expand description

Directs rdxusb to open an RdxUsb-compatible device with the associated vid/pid/serial number tuple.

rdxusb will spawn an event loop that will continually attempt to open a matching device and send/receive messages from it. If connection with the matching device is lost, reconnection is continually attempted.

  • vid - USB vendor ID to match
  • pid - USB product ID to match
  • serial_number - an optional serial number string. This MUST be UTF-8 or NULL.
  • close_on_dc - if true, closes the device handle on device disconnect
  • buf_size - the maximum number of packets to buffer inbound/outbound

Returns a non-negative device handle on success, negative on error