[DllImport("RGUSBdrv.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern byte SetDateTime(uint DateTimeUNIX);
private void btnSetDateTime_Click(object sender, EventArgs e)
{
uint unixTimestamp;
unixTimestamp = (UInt32)(DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds;
if (Connected)
SetDateTime(unixTimestamp);
}