> On Jul 8, 2015, at 6:02 PM, Stuart Smith <[email protected]> wrote:
>
> Given a vid/pid, look for an object with idVendor and idProduct matching
> your vid/pid, then look down the tree for the IODialinDevice key; its
> value gives you the mount point.
Hi Stuart,
I can locate the topmost device entry by pid/vid, but how to "look down the
tree”?
For one device, the IOCalloutDevice key is located way down:
+-o USB Device 2x30A@6200000 <class IOUSBDevice, id 0x1000003b5>
| +-o IOUSBInterface@1 <class IOUSBInterface, id 0x1000003bb>
| +-o AppleUSBCDCACMData <class AppleUSBCDCACMData, id 0x1000003be>
| +-o IOModemSerialStreamSync <class IOModemSerialStreamSync, id
0x1000003c0>
| +-o IOSerialBSDClient <class IOSerialBSDClient, id 0x1000003c1>
| "IOCalloutDevice" = "/dev/cu.usbmodem621"
| "IODialinDevice" = "/dev/tty.usbmodem621”
Here’s the relevant code that I have working to this point:
while ((usbDevice = IOIteratorNext(iter))) {
CFMutableDictionaryRef properties = NULL;
result =
IORegistryEntryCreateCFProperties(usbDevice,&properties,kCFAllocatorDefault,kNilOptions);
if ((result == KERN_SUCCESS) && properties) {
NSDictionary *propertiesDict = (__bridge NSDictionary
*)(properties);
NSString *pid = [ propertiesDict objectForKey:@"idProduct" ];
NSString *vid = [ propertiesDict objectForKey:@"idVendor" ];
if ( ( pid.intValue != 0x0089 ) || ( vid.intValue != 0x1FFB ) ) {
. . . // topmost level properties dictionary
}
}
}
The properties dictionary at the topmost level doesn’t have the dialing/callout
values. What call is used to chain down the tree?
-Carl
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