Can now list available serial ports

SerialGamepad.xcodeproj/project.pbxproj

@@ -8,6 +8,7 @@
 
 /* Begin PBXBuildFile section */
 		E9B6A1D21C1F623B00DA3C80 /* MainWindow.m in Sources */ = {isa = PBXBuildFile; fileRef = E9B6A1D11C1F623B00DA3C80 /* MainWindow.m */; };
+		E9B6A1D61C1F683300DA3C80 /* Serial.m in Sources */ = {isa = PBXBuildFile; fileRef = E9B6A1D51C1F683300DA3C80 /* Serial.m */; };
 		E9F5FFB21C1F5E2B00AA4E3B /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = E9F5FFB11C1F5E2B00AA4E3B /* AppDelegate.m */; };
 		E9F5FFB51C1F5E2B00AA4E3B /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = E9F5FFB41C1F5E2B00AA4E3B /* main.m */; };
 		E9F5FFB71C1F5E2B00AA4E3B /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = E9F5FFB61C1F5E2B00AA4E3B /* Assets.xcassets */; };
@@ -17,6 +18,8 @@
 /* Begin PBXFileReference section */
 		E9B6A1D01C1F623B00DA3C80 /* MainWindow.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MainWindow.h; sourceTree = "<group>"; };
 		E9B6A1D11C1F623B00DA3C80 /* MainWindow.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MainWindow.m; sourceTree = "<group>"; };
+		E9B6A1D41C1F683300DA3C80 /* Serial.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Serial.h; sourceTree = "<group>"; };
+		E9B6A1D51C1F683300DA3C80 /* Serial.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = Serial.m; sourceTree = "<group>"; };
 		E9F5FFAD1C1F5E2B00AA4E3B /* SerialGamepad.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = SerialGamepad.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		E9F5FFB01C1F5E2B00AA4E3B /* AppDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
 		E9F5FFB11C1F5E2B00AA4E3B /* AppDelegate.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
@@ -62,6 +65,8 @@
 				E9F5FFB81C1F5E2B00AA4E3B /* MainMenu.xib */,
 				E9B6A1D01C1F623B00DA3C80 /* MainWindow.h */,
 				E9B6A1D11C1F623B00DA3C80 /* MainWindow.m */,
+				E9B6A1D41C1F683300DA3C80 /* Serial.h */,
+				E9B6A1D51C1F683300DA3C80 /* Serial.m */,
 				E9F5FFBB1C1F5E2B00AA4E3B /* Info.plist */,
 				E9F5FFB31C1F5E2B00AA4E3B /* Supporting Files */,
 			);
@@ -166,6 +171,7 @@
 				E9F5FFB51C1F5E2B00AA4E3B /* main.m in Sources */,
 				E9F5FFB21C1F5E2B00AA4E3B /* AppDelegate.m in Sources */,
 				E9B6A1D21C1F623B00DA3C80 /* MainWindow.m in Sources */,
+				E9B6A1D61C1F683300DA3C80 /* Serial.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

SerialGamepad.xcodeproj/xcuserdata/thomas.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Bucket
+   type = "1"
+   version = "2.0">
+</Bucket>

SerialGamepad/AppDelegate.m

@@ -7,20 +7,24 @@
 //
 
 #import "AppDelegate.h"
+#import "MainWindow.h"
 
 @interface AppDelegate ()
 
-@property (weak) IBOutlet NSWindow *window;
+@property (weak) IBOutlet MainWindow *window;
+
 @end
 
 @implementation AppDelegate
 
+@synthesize window;
+
 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)application {
     return YES;
 }
 
 - (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
-    // Insert code here to initialize your application
+    [window populatePortList];
 }
 
 - (void)applicationWillTerminate:(NSNotification *)aNotification {

SerialGamepad/Base.lproj/MainMenu.xib

@@ -696,14 +696,6 @@
                             <action selector="createButtonPressed:" target="QvC-M9-y7g" id="Iff-L2-DFe"/>
                         </connections>
                     </button>
-                    <popUpButton verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="5dN-Rl-Vkt">
-                        <rect key="frame" x="18" y="214" width="295" height="26"/>
-                        <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" id="ofz-Zj-Lba">
-                            <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
-                            <font key="font" metaFont="menu"/>
-                            <menu key="menu" id="hsu-7G-Ltg"/>
-                        </popUpButtonCell>
-                    </popUpButton>
                     <levelIndicator verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Bo5-fb-a0u">
                         <rect key="frame" x="20" y="140" width="290" height="16"/>
                         <levelIndicatorCell key="cell" alignment="left" doubleValue="-511" minValue="-511" maxValue="511" warningValue="2000" criticalValue="2000" levelIndicatorStyle="continuousCapacity" id="xcx-tB-hUl"/>
@@ -728,6 +720,20 @@
                         <rect key="frame" x="20" y="20" width="290" height="16"/>
                         <levelIndicatorCell key="cell" alignment="left" doubleValue="-511" minValue="-511" maxValue="511" warningValue="2000" criticalValue="2000" levelIndicatorStyle="continuousCapacity" id="nfv-aV-cRB"/>
                     </levelIndicator>
+                    <popUpButton verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="mvV-p0-WO6">
+                        <rect key="frame" x="18" y="214" width="295" height="26"/>
+                        <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" id="p4h-ja-UZg">
+                            <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
+                            <font key="font" metaFont="menu"/>
+                            <menu key="menu" id="njN-zA-NVu">
+                                <items>
+                                    <menuItem title="Item 1" id="W0M-vU-Ybd"/>
+                                    <menuItem title="Item 2" id="SHC-AR-wFp"/>
+                                    <menuItem title="Item 3" id="PqD-oG-Ww4"/>
+                                </items>
+                            </menu>
+                        </popUpButtonCell>
+                    </popUpButton>
                 </subviews>
             </view>
             <connections>
@@ -739,7 +745,7 @@
                 <outlet property="level4" destination="txY-x4-Zyp" id="XfN-HH-2lT"/>
                 <outlet property="level5" destination="VyV-eY-7y9" id="Ea2-ot-aqN"/>
                 <outlet property="level6" destination="vCW-tD-iWD" id="Il2-Xb-sB9"/>
-                <outlet property="portList" destination="ofz-Zj-Lba" id="lNL-1h-cEf"/>
+                <outlet property="portList" destination="mvV-p0-WO6" id="TqL-rb-GiB"/>
             </connections>
             <point key="canvasLocation" x="598" y="439"/>
         </window>

SerialGamepad/Info.plist

@@ -21,7 +21,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>2</string>
+	<string>28</string>
 	<key>LSApplicationCategoryType</key>
 	<string>public.app-category.utilities</string>
 	<key>LSMinimumSystemVersion</key>

SerialGamepad/MainWindow.h

@@ -10,7 +10,7 @@
 
 @interface MainWindow : NSWindow
 
-@property (weak) IBOutlet NSPopUpButtonCell *portList;
+@property (weak) IBOutlet NSPopUpButton *portList;
 @property (weak) IBOutlet NSButton *connectButton;
 @property (weak) IBOutlet NSButton *createButton;
 @property (weak) IBOutlet NSLevelIndicator *level1;
@@ -20,4 +20,6 @@
 @property (weak) IBOutlet NSLevelIndicator *level5;
 @property (weak) IBOutlet NSLevelIndicator *level6;
 
+- (void)populatePortList;
+
 @end

SerialGamepad/MainWindow.m

@@ -8,12 +8,23 @@
 
 #import "MainWindow.h"
 
+#import "Serial.h"
+
 @implementation MainWindow
 
+@synthesize portList, connectButton, createButton, level1, level2, level3, level4, level5, level6;
+
 - (IBAction)connectButtonPressed:(id)sender {
 }
 
 - (IBAction)createButtonPressed:(id)sender {
 }
 
+- (void)populatePortList {
+    NSArray *ports = [Serial listSerialPorts];
+    
+    [portList removeAllItems];
+    [portList addItemsWithTitles:ports];
+}
+
 @end

SerialGamepad/Serial.h

@@ -0,0 +1,19 @@
+//
+//  Serial.h
+//  SerialGamepad
+//
+//  Created by Thomas Buck on 14.12.15.
+//  Copyright © 2015 xythobuz. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface Serial : NSObject
+
++ (NSArray *)listSerialPorts;
+
+@end
+
+// Internal
+kern_return_t findSerialPorts(io_iterator_t *matches);
+kern_return_t getSerialPortPath(io_iterator_t serialPortIterator, char **deviceFilePath, CFIndex maxPathCount, CFIndex maxPathSize);

SerialGamepad/Serial.m

@@ -0,0 +1,135 @@
+//
+//  Serial.m
+//  SerialGamepad
+//
+//  For more informations refer to this document:
+//  https://developer.apple.com/library/mac/documentation/DeviceDrivers/Conceptual/WorkingWSerial/WWSerial_SerialDevs/SerialDevices.html
+//
+//  Created by Thomas Buck on 14.12.15.
+//  Copyright © 2015 xythobuz. All rights reserved.
+//
+
+#import <IOKit/serial/IOSerialKeys.h>
+
+#import "Serial.h"
+
+@implementation Serial
+
++ (NSArray *)listSerialPorts {
+    // Get Iterator with all serial ports
+    io_iterator_t serialPortIterator;
+    kern_return_t kernResult = findSerialPorts(&serialPortIterator);
+    
+    // Create 2D array
+    char **portList;
+    portList = malloc(100 * sizeof(char *));
+    for (int i = 0; i < 100; i++) portList[i] = malloc(200 * sizeof(char));
+    
+    // Copy device name into C-String array
+    kernResult = getSerialPortPath(serialPortIterator, portList, 100, 200);
+    IOObjectRelease(serialPortIterator);
+    
+    // Copy contents into NSString Array
+    NSString *stringList[100];
+    NSUInteger realCount = 0;
+    while (portList[realCount] != NULL) {
+        stringList[realCount] = [NSString stringWithCString:portList[realCount] encoding:NSUTF8StringEncoding];
+        realCount++;
+    }
+    
+    // Destroy 2D array
+    for (int i = 0; i < 100; i++) free(portList[i]);
+    free(portList);
+    
+    // And return them as NSArray
+    return [[NSArray alloc] initWithObjects:stringList count:realCount];
+}
+
+@end
+
+kern_return_t findSerialPorts(io_iterator_t *matches) {
+    kern_return_t kernResult;
+    mach_port_t masterPort;
+    CFMutableDictionaryRef classesToMatch;
+    
+    kernResult = IOMasterPort(MACH_PORT_NULL, &masterPort);
+    if (KERN_SUCCESS != kernResult) {
+        NSLog(@"IOMasterPort returned %d\n", kernResult);
+        return kernResult;
+    }
+    
+    // Serial devices are instances of class IOSerialBSDClient.
+    classesToMatch = IOServiceMatching(kIOSerialBSDServiceValue);
+    if (classesToMatch == NULL) {
+        NSLog(@"IOServiceMatching returned a NULL dictionary.\n");
+    } else {
+        CFDictionarySetValue(classesToMatch,
+                             CFSTR(kIOSerialBSDTypeKey),
+                             CFSTR(kIOSerialBSDRS232Type));
+        
+        // Each serial device object has a property with key
+        // kIOSerialBSDTypeKey and a value that is one of
+        // kIOSerialBSDAllTypes, kIOSerialBSDModemType,
+        // or kIOSerialBSDRS232Type. You can change the
+        // matching dictionary to find other types of serial
+        // devices by changing the last parameter in the above call
+        // to CFDictionarySetValue.
+    }
+    
+    kernResult = IOServiceGetMatchingServices(masterPort, classesToMatch, matches);
+    if (KERN_SUCCESS != kernResult) {
+        NSLog(@"IOServiceGetMatchingServices returned %d\n", kernResult);
+        return kernResult;
+    }
+    
+    return kernResult;
+}
+
+kern_return_t getSerialPortPath(io_iterator_t serialPortIterator, char **deviceFilePath, CFIndex maxPathCount, CFIndex maxPathSize) {
+    io_object_t modemService;
+    kern_return_t kernResult = KERN_FAILURE;
+    CFIndex i = 0;
+    
+    while ((modemService = IOIteratorNext(serialPortIterator)) && (i < (maxPathCount - 1))) {
+        CFTypeRef   deviceFilePathAsCFString;
+        
+        // Get the callout device's path (/dev/cu.xxxxx).
+        // The callout device should almost always be
+        // used. You would use the dialin device (/dev/tty.xxxxx) when
+        // monitoring a serial port for
+        // incoming calls, for example, a fax listener.
+        
+        deviceFilePathAsCFString = IORegistryEntryCreateCFProperty(modemService,
+                                                                   CFSTR(kIODialinDeviceKey),
+                                                                   kCFAllocatorDefault,
+                                                                   0);
+        if (deviceFilePathAsCFString) {
+            Boolean result;
+            
+            deviceFilePath[i][0] = '\0';
+            
+            // Convert the path from a CFString to a NULL-terminated C string
+            // for use with the POSIX open() call.
+            
+            result = CFStringGetCString(deviceFilePathAsCFString,
+                                        deviceFilePath[i],
+                                        maxPathSize,
+                                        kCFStringEncodingASCII);
+            CFRelease(deviceFilePathAsCFString);
+            
+            if (result) {
+                NSLog(@"BSD path: %s\n", deviceFilePath[i]);
+                i++;
+                kernResult = KERN_SUCCESS;
+            }
+        }
+        
+        // Release the io_service_t now that we are done with it.
+        
+        (void) IOObjectRelease(modemService);
+    }
+    
+    deviceFilePath[i] = NULL;
+    
+    return kernResult;
+}