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Check for kIOReturnError instead of Success #7

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merged 4 commits into from
May 14, 2020
Merged

Check for kIOReturnError instead of Success #7

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fed4aef
Check for kIOReturnError instead of Success
verberktstan Apr 30, 2020
926050d
Add some error messages
Apr 30, 2020
030fd08
Update README.md
verberktstan May 14, 2020
91faae5
Update README.md
verberktstan May 14, 2020
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8 changes: 8 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,14 @@ Free The Wheel for OS X

Logitech driving wheel enabler based on [Feral Interactive's FreeTheWheel](http://support.feralinteractive.com/en/faqs/free_the_wheel/)

## OS X Catalina

This is a fork of [jackhumbert's FreeTheWheel](https://github.com/jackhumbert/FreeTheWheel).
I just made it to work on OS X Catalina. As far is I know, it works for the following wheels. Please let me know if your wheel works!

* G27
* Driving Force GT

## Features for the G27

* Full 900˚ Rotation
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31 changes: 25 additions & 6 deletions WheelSupports.cpp
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Expand Up @@ -7,6 +7,7 @@
//

#include <CoreFoundation/CFString.h>
#include <string>
#include "WheelSupports.h"

//=============================================================================
Expand Down Expand Up @@ -116,12 +117,30 @@ bool ConfigDevice(IOHIDDeviceRef hidDevice, DeviceID deviceID, const DeviceMode
IOReturn OpenDevice(IOHIDDeviceRef hidDevice)
{
IOReturn result = IOHIDDeviceOpen(hidDevice, kIOHIDOptionsTypeSeizeDevice);
if(result != kIOReturnSuccess)
{
printf("ERROR: OpenDevice failed with result: %x\n", result);
return result;
}
return kIOReturnSuccess;
std::string msg = "";

switch(result) {
case kIOReturnError: msg = "general error"; break;
case kIOReturnNoMemory: msg = "can't allocate memory"; break;
case kIOReturnNoResources: msg = "resource shortage"; break;
case kIOReturnIPCError: msg = "error during IPC"; break;
case kIOReturnNoDevice: msg = "no such device"; break;
case kIOReturnNotPrivileged: msg = "privilege violation"; break;
case kIOReturnBadArgument: msg = "invalid argument"; break;
case kIOReturnLockedRead: msg = "device read locked"; break;
case kIOReturnLockedWrite: msg = "device write locked"; break;
//case kIOReturnExclusiveAccess: msg = "exclusive access and device already open"; break; // Common error on macOS Catalina with DFGT
case kIOReturnBadMessageID: msg = "sent/received messages had different msg_id"; break;
case kIOReturnUnsupported: msg = "unsupported function"; break;
case kIOReturnVMError: msg = "misc. VM failure"; break;
}

if(msg != "") {
printf("Error: OpenDevice failed - %s - (%x)\n", msg.c_str(), result);
return result;

}
return kIOReturnSuccess;
}


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