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+---- Thread: [C#] Controlling cd-rom motor (/showthread.php?tid=5370224)
Controlling cd-rom motor - Mudzay - Aug 10, 2016
Hey, can someone tell me if its possible to control (change speed, start/stop) the cd-rom motor?
Thanks in advance :P
* - i-manuel - Aug 10, 2016
(Aug 10, 2016 10:13 AM)Mudzay Wrote: Hey, can someone tell me if its possible to control (change speed, start/stop) the cd-rom motor?
Thanks in advance :P
lol i asked my teacher about that, he told me that it is not possible with .NET
* - Lord - Aug 10, 2016
(Aug 10, 2016 10:29 AM)i-manuel Wrote: lol i asked my teacher about that, he told me that it is not possible with .NET
Everything is possible.
I'm sure there's a dll out there somewhere or something.
* - Mudzay - Aug 10, 2016
(Aug 10, 2016 10:29 AM)i-manuel Wrote: lol i asked my teacher about that, he told me that it is not possible with .NETU can always make c++ etc. dll and call it from c# xD (I think its possible, windows dlls like wimm.dll are c or c++)
* - Oliver Sykes - Aug 10, 2016
You can open/close the tray from within c# easily. Not so sure about the speed, though.
* - еlixir - Aug 10, 2016
Code
public bool IsDiscAvailable(int driveNumber)
{
MsftDiscMaster2Class discMaster = new MsftDiscMaster2Class();
string id = discMaster[driveNumber];
MsftDiscRecorder2Class recorder = new MsftDiscRecorder2Class();
recorder.InitializeDiscRecorder(id);
MsftDiscFormat2DataClass dataWriter = new MsftDiscFormat2DataClass();
if (dataWriter.IsRecorderSupported(recorder))
{
dataWriter.Recorder = recorder;
}
else
{
Console.WriteLine("Recorder not supported");
return false;
}
if (dataWriter.IsCurrentMediaSupported(recorder))
{
var media = dataWriter.CurrentPhysicalMediaType;
if (media == IMAPI_MEDIA_PHYSICAL_TYPE.IMAPI_MEDIA_TYPE_UNKNOWN)
{
Console.WriteLine("Unknown media or no disc");
}
else
{
Console.WriteLine("Found disc type {0}", media);
return true;
}
}
else
{
Console.WriteLine("Disc absent or invalid.");
}
return false;
}or
Code
using System;
using System.Management;
class Application
{
public static void Main()
{
SelectQuery query =
new SelectQuery( "select * from win32_logicaldisk where drivetype=5" );
ManagementObjectSearcher searcher =
new ManagementObjectSearcher(query);
foreach( ManagementObject mo in searcher.Get() )
{
// If both properties are null I suppose there's no CD
if(( mo["volumename"] != null) || (mo["volumeserialnumber"] != null))
{
Console.WriteLine("CD is named: {0}", mo["volumename"]);
Console.WriteLine("CD Serial Number: {0}", mo["volumeserialnumber"]);
}
else
{
Console.WriteLine("No CD in Unit");
}
}
// Here to stop app from closing
Console.WriteLine("\nPress Return to exit.");
Console.Read();
}
}The snippets above checks for a disk, causing the motor to run.
source:
http://stackoverflow.com/questions/11420365/detecting-if-disc-is-in-dvd-drive
* - 0xDEAD10CC - Aug 10, 2016
You would need to use IOCTL's for this. IOCTL_CDROM_SET_SPEED more specifically as the control code that you'd have to send to the CD-ROM class driver as a request of type CdromSetSpeed (from the CDROM_SPEED_REQUEST enum) in the RequestType memer of the CDROM_SET_SPEED struct. The buffer at Irp->AssociatedIrp.SystemBuffer would contain the CDROM_SET_SPEED structure. You wouldn't need to keep track of the previous speed either because when media is changed it will revert to it's default speed. From a user-mode application you would have to call DeviceIoControl() to send these requests.
(Aug 10, 2016 07:33 PM)еlixir Wrote: ...
Yeah wonderful -- Not at ALL what OP asked for...