Add UI for temperature sensor in CHIPTool iOS app

src/darwin/CHIPTool/CHIPTool.xcodeproj/project.pbxproj

@@ -20,6 +20,7 @@
 		B243A6692513A73600E56FEA /* RootViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = B243A6682513A73600E56FEA /* RootViewController.m */; };
 		B2946A4224C99D53005C87D0 /* WifiViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = B2946A4124C99D53005C87D0 /* WifiViewController.m */; };
 		B2946A9B24C9A7BF005C87D0 /* DefaultsUtils.m in Sources */ = {isa = PBXBuildFile; fileRef = B2946A9A24C9A7BF005C87D0 /* DefaultsUtils.m */; };
+		B2F51E99252DCDC000911FA5 /* TemperatureSensorViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = B2F51E98252DCDC000911FA5 /* TemperatureSensorViewController.m */; };
 		B2F53AEB245B0D140010745E /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = B2F53AE9245B0D140010745E /* LaunchScreen.storyboard */; };
 /* End PBXBuildFile section */
 
@@ -74,6 +75,8 @@
 		B2946A4124C99D53005C87D0 /* WifiViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = WifiViewController.m; sourceTree = "<group>"; };
 		B2946A9924C9A7BF005C87D0 /* DefaultsUtils.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = DefaultsUtils.h; sourceTree = "<group>"; };
 		B2946A9A24C9A7BF005C87D0 /* DefaultsUtils.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = DefaultsUtils.m; sourceTree = "<group>"; };
+		B2F51E97252DCDC000911FA5 /* TemperatureSensorViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = TemperatureSensorViewController.h; sourceTree = "<group>"; };
+		B2F51E98252DCDC000911FA5 /* TemperatureSensorViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = TemperatureSensorViewController.m; sourceTree = "<group>"; };
 		B2F53AEA245B0D140010745E /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = UI/Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -191,6 +194,7 @@
 				B204A623244E1D0600C7C0E1 /* SceneDelegate.m */,
 				B243A6672513A73600E56FEA /* RootViewController.h */,
 				B243A6682513A73600E56FEA /* RootViewController.m */,
+				B2F51E93252DCC9E00911FA5 /* Temperature Sensor */,
 				B2946A3F24C99D21005C87D0 /* Wifi */,
 				0C79937824858B3B0047A373 /* QRCode */,
 				0C79937924858B4F0047A373 /* Echo client */,
@@ -217,6 +221,15 @@
 			path = Wifi;
 			sourceTree = "<group>";
 		};
+		B2F51E93252DCC9E00911FA5 /* Temperature Sensor */ = {
+			isa = PBXGroup;
+			children = (
+				B2F51E97252DCDC000911FA5 /* TemperatureSensorViewController.h */,
+				B2F51E98252DCDC000911FA5 /* TemperatureSensorViewController.m */,
+			);
+			path = "Temperature Sensor";
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -322,6 +335,7 @@
 				B2946A9B24C9A7BF005C87D0 /* DefaultsUtils.m in Sources */,
 				991DC091247747F500C13860 /* EchoViewController.m in Sources */,
 				B204A621244E1D0600C7C0E1 /* AppDelegate.m in Sources */,
+				B2F51E99252DCDC000911FA5 /* TemperatureSensorViewController.m in Sources */,
 				B243A6692513A73600E56FEA /* RootViewController.m in Sources */,
 				B204A632244E1D0700C7C0E1 /* main.m in Sources */,
 				B204A624244E1D0600C7C0E1 /* SceneDelegate.m in Sources */,

src/darwin/CHIPTool/CHIPTool/UI Helpers/CHIPUIViewUtils.m

@@ -30,7 +30,7 @@ + (UILabel *)addTitle:(NSString *)title toView:(UIView *)view
 
     titleLabel.translatesAutoresizingMaskIntoConstraints = false;
     [titleLabel.centerXAnchor constraintEqualToAnchor:view.centerXAnchor].active = YES;
-    [titleLabel.topAnchor constraintEqualToAnchor:view.topAnchor constant:100].active = YES;
+    [titleLabel.topAnchor constraintEqualToAnchor:view.topAnchor constant:110].active = YES;
 
     return titleLabel;
 }

src/darwin/CHIPTool/CHIPTool/View Controllers/RootViewController.m

@@ -19,6 +19,7 @@
 #import "EchoViewController.h"
 #import "OnOffViewController.h"
 #import "QRCodeViewController.h"
+#import "TemperatureSensorViewController.h"
 #import "WifiViewController.h"
 
 @implementation RootViewController
@@ -36,7 +37,7 @@ - (void)setUpTableView
     self.tableView.delegate = self;
     self.tableView.dataSource = self;
     [self.view addSubview:self.tableView];
-    self.options = @[ @"QRCode scanner", @"Echo client", @"Light on / off cluster", @"Wifi Configuration" ];
+    self.options = @[ @"QRCode scanner", @"Echo client", @"Light on / off cluster", @"Temperature Sensor", @"Wifi Configuration" ];
 }
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
@@ -71,13 +72,22 @@ - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath
         [self pushLightOnOffCluster];
         break;
     case 3:
+        [self pushTemperatureSensor];
+        break;
+    case 4:
         [self pushNetworkConfiguration];
         break;
     default:
         break;
     }
 }
 
+- (void)pushTemperatureSensor
+{
+    TemperatureSensorViewController * controller = [TemperatureSensorViewController new];
+    [self.navigationController pushViewController:controller animated:YES];
+}
+
 - (void)pushNetworkConfiguration
 {
     WifiViewController * controller = [WifiViewController new];

src/darwin/CHIPTool/CHIPTool/View Controllers/Temperature Sensor/TemperatureSensorViewController.h

@@ -0,0 +1,18 @@
+//
+//  TemperatureSensorViewController.h
+//  CHIPTool
+//
+//  Created by Shana Azria on 07/10/2020.
+//  Copyright © 2020 CHIP. All rights reserved.
+//
+
+#import <CHIP/CHIP.h>
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface TemperatureSensorViewController : UIViewController <CHIPDeviceControllerDelegate>
+
+@end
+
+NS_ASSUME_NONNULL_END

src/darwin/CHIPTool/CHIPTool/View Controllers/Temperature Sensor/TemperatureSensorViewController.m

@@ -0,0 +1,233 @@
+//
+//  TemperatureSensorViewController.m
+//  CHIPTool
+//
+//  Created by Shana Azria on 07/10/2020.
+//  Copyright © 2020 CHIP. All rights reserved.
+//
+
+#import "TemperatureSensorViewController.h"
+#import "CHIPUIViewUtils.h"
+#import "DefaultsUtils.h"
+#import <CHIP/CHIP.h>
+
+@interface TemperatureSensorViewController ()
+@property (nonatomic, strong) UILabel * temperatureLabel;
+@property (nonatomic, strong) UITextField * minIntervalInSecondsTextField;
+@property (nonatomic, strong) UITextField * maxIntervalInSecondsTextField;
+@property (nonatomic, strong) UITextField * deltaInFahrenheitTextField;
+@property (nonatomic, strong) UIButton * sendReportingSetup;
+
+@property (nonatomic, strong) CHIPTemperatureMeasurement * chipTempMeasurement;
+@property (readwrite) CHIPDevice * chipDevice;
+@property (readwrite) CHIPDeviceController * chipController;
+
+@end
+
+@implementation TemperatureSensorViewController
+
+// MARK: UIViewController methods
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+    [self setupUI];
+
+    UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
+    [self.view addGestureRecognizer:tap];
+
+    // initialize the device controller
+    dispatch_queue_t callbackQueue = dispatch_queue_create("com.zigbee.chip.tempsensorvc.callback", DISPATCH_QUEUE_SERIAL);
+    self.chipController = [CHIPDeviceController sharedController];
+    [self.chipController setDelegate:self queue:callbackQueue];
+
+    uint64_t deviceID = CHIPGetNextAvailableDeviceID();
+    if (deviceID > 1) {
+        // Let's use the last device that was paired
+        deviceID--;
+        NSError * error;
+        self.chipDevice = [self.chipController getPairedDevice:deviceID error:&error];
+        self.chipTempMeasurement = [[CHIPTemperatureMeasurement alloc] initWithDevice:self.chipDevice
+                                                                             endpoint:1
+                                                                                queue:callbackQueue];
+    }
+
+    [self readCurrentTemperature];
+}
+
+- (IBAction)sendReportingSetup:(id)sender
+{
+    NSLog(@"Status: User request to send reporting setup.");
+    [self reportFromUserEnteredSettings];
+}
+
+- (IBAction)refreshTemperatureMeasurement:(id)sender
+{
+    NSLog(@"Status: User request to refresh temperature reading.");
+    [self readCurrentTemperature];
+}
+
+// MARK: UI helpers
+
+- (void)dismissKeyboard
+{
+    [_minIntervalInSecondsTextField resignFirstResponder];
+    [_maxIntervalInSecondsTextField resignFirstResponder];
+    [_deltaInFahrenheitTextField resignFirstResponder];
+}
+
+- (void)setupUI
+{
+    self.view.backgroundColor = UIColor.whiteColor;
+
+    // Title
+    UILabel * titleLabel = [CHIPUIViewUtils addTitle:@"Temperature Sensor" toView:self.view];
+
+    // stack view
+    UIStackView * stackView = [UIStackView new];
+    stackView.axis = UILayoutConstraintAxisVertical;
+    stackView.distribution = UIStackViewDistributionFill;
+    stackView.alignment = UIStackViewAlignmentLeading;
+    stackView.spacing = 30;
+    [self.view addSubview:stackView];
+
+    stackView.translatesAutoresizingMaskIntoConstraints = false;
+    [stackView.topAnchor constraintEqualToAnchor:titleLabel.bottomAnchor constant:40].active = YES;
+    [stackView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor constant:30].active = YES;
+    [stackView.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor constant:-30].active = YES;
+
+    // Temperature label
+    _temperatureLabel = [UILabel new];
+    _temperatureLabel.text = @"°F";
+    _temperatureLabel.textColor = UIColor.blackColor;
+    _temperatureLabel.textAlignment = NSTextAlignmentCenter;
+    _temperatureLabel.font = [UIFont systemFontOfSize:50 weight:UIFontWeightThin];
+    [stackView addArrangedSubview:_temperatureLabel];
+    _temperatureLabel.translatesAutoresizingMaskIntoConstraints = false;
+    [_temperatureLabel.trailingAnchor constraintEqualToAnchor:stackView.trailingAnchor].active = YES;
+
+    // Reporting settings
+    UILabel * reportingLabel = [UILabel new];
+    reportingLabel.text = @"Reporting Setup";
+    reportingLabel.textColor = UIColor.blackColor;
+    reportingLabel.textAlignment = NSTextAlignmentLeft;
+    reportingLabel.font = [UIFont systemFontOfSize:18 weight:UIFontWeightSemibold];
+    [stackView addArrangedSubview:reportingLabel];
+
+    reportingLabel.translatesAutoresizingMaskIntoConstraints = false;
+    [reportingLabel.centerXAnchor constraintEqualToAnchor:stackView.centerXAnchor].active = YES;
+
+    // Min interval in seconds
+    _minIntervalInSecondsTextField = [UITextField new];
+    _minIntervalInSecondsTextField.keyboardType = UIKeyboardTypeNumberPad;
+    UILabel * minIntervalInSecondsLabel = [UILabel new];
+    [minIntervalInSecondsLabel setText:@"Min. interval (sec):"];
+    UIView * minIntervalInSecondsView = [CHIPUIViewUtils viewWithLabel:minIntervalInSecondsLabel
+                                                             textField:_minIntervalInSecondsTextField];
+    [stackView addArrangedSubview:minIntervalInSecondsView];
+
+    minIntervalInSecondsView.translatesAutoresizingMaskIntoConstraints = false;
+    [minIntervalInSecondsView.trailingAnchor constraintEqualToAnchor:stackView.trailingAnchor].active = YES;
+
+    // Min interval in seconds
+    _maxIntervalInSecondsTextField = [UITextField new];
+    _maxIntervalInSecondsTextField.keyboardType = UIKeyboardTypeNumberPad;
+    UILabel * maxIntervalInSecondsLabel = [UILabel new];
+    [maxIntervalInSecondsLabel setText:@"Max. interval (sec):"];
+    UIView * maxIntervalInSecondsView = [CHIPUIViewUtils viewWithLabel:maxIntervalInSecondsLabel
+                                                             textField:_maxIntervalInSecondsTextField];
+    [stackView addArrangedSubview:maxIntervalInSecondsView];
+
+    maxIntervalInSecondsView.translatesAutoresizingMaskIntoConstraints = false;
+    [maxIntervalInSecondsView.trailingAnchor constraintEqualToAnchor:stackView.trailingAnchor].active = YES;
+
+    // Delta
+    _deltaInFahrenheitTextField = [UITextField new];
+    _deltaInFahrenheitTextField.keyboardType = UIKeyboardTypeNumberPad;
+    UILabel * deltaInFahrenheitLabel = [UILabel new];
+    [deltaInFahrenheitLabel setText:@"Delta (F):"];
+    UIView * deltaInFahrenheitView = [CHIPUIViewUtils viewWithLabel:deltaInFahrenheitLabel textField:_deltaInFahrenheitTextField];
+    [stackView addArrangedSubview:deltaInFahrenheitView];
+
+    deltaInFahrenheitView.translatesAutoresizingMaskIntoConstraints = false;
+    [deltaInFahrenheitView.trailingAnchor constraintEqualToAnchor:stackView.trailingAnchor].active = YES;
+
+    // Reporting button
+    _sendReportingSetup = [UIButton new];
+    [_sendReportingSetup setTitle:@"Send reporting settings" forState:UIControlStateNormal];
+    [_sendReportingSetup addTarget:self action:@selector(sendReportingSetup:) forControlEvents:UIControlEventTouchUpInside];
+    _sendReportingSetup.backgroundColor = UIColor.systemBlueColor;
+    _sendReportingSetup.titleLabel.font = [UIFont systemFontOfSize:17];
+    _sendReportingSetup.titleLabel.textColor = [UIColor whiteColor];
+    _sendReportingSetup.layer.cornerRadius = 5;
+    _sendReportingSetup.clipsToBounds = YES;
+    [stackView addArrangedSubview:_sendReportingSetup];
+
+    _sendReportingSetup.translatesAutoresizingMaskIntoConstraints = false;
+    [_sendReportingSetup.trailingAnchor constraintEqualToAnchor:stackView.trailingAnchor].active = YES;
+
+    // Refresh button
+    UIBarButtonItem * button = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh
+                                                                             target:self
+                                                                             action:@selector(refreshTemperatureMeasurement:)];
+    self.navigationItem.rightBarButtonItem = button;
+}
+
+- (void)updateTempInUI:(int)newTemp
+{
+    _temperatureLabel.text = [NSString stringWithFormat:@"%@ °F", @(newTemp)];
+    NSLog(@"Status: Updated temp in UI to %@", _temperatureLabel.text);
+}
+
+// MARK: CHIPTemperatureMeasurement
+
+- (void)readCurrentTemperature
+{
+    CHIPDeviceCallback completionHandler = ^(NSError * error) {
+        NSLog(@"Status: Read temperature request completed with error %@", [error description]);
+    };
+
+    [self.chipTempMeasurement readAttributeMeasuredValue:completionHandler];
+}
+
+- (void)reportFromUserEnteredSettings
+{
+    CHIPDeviceCallback onCompletionCallback = ^(NSError * error) {
+        NSLog(@"Status: update reportAttributeMeasuredValue completed with error %@", [error description]);
+    };
+
+    CHIPDeviceCallback onChangeCallback = ^(NSError * error) {
+        NSLog(@"Status: Temp value changed with error %@", [error description]);
+    };
+    int minIntervalSeconds = [_minIntervalInSecondsTextField.text intValue] * 1000;
+    int maxIntervalSeconds = [_maxIntervalInSecondsTextField.text intValue] * 1000;
+    int deltaInFahrenheit = [_deltaInFahrenheitTextField.text intValue];
+
+    NSLog(@"Sending temp reporting values: min %@ max %@ value %@", @(minIntervalSeconds), @(maxIntervalSeconds),
+        @(deltaInFahrenheit));
+
+    [self.chipTempMeasurement reportAttributeMeasuredValue:onCompletionCallback
+                                                  onChange:onChangeCallback
+                                               minInterval:minIntervalSeconds
+                                               maxInterval:maxIntervalSeconds
+                                                    change:deltaInFahrenheit];
+}
+
+// MARK: CHIPDeviceControllerDelegate
+- (void)deviceControllerOnConnected
+{
+    NSLog(@"Status: Device connected");
+}
+
+- (void)deviceControllerOnError:(nonnull NSError *)error
+{
+    NSLog(@"Status: Device Controller error %@", [error description]);
+}
+
+- (void)deviceControllerOnMessage:(nonnull NSData *)message
+{
+    NSLog(@"Status: Received a message.");
+    // TODO: Use callback APIs to show read response
+}
+
+@end