Particle iOS Cloud SDK

Introduction

Particle iOS Cloud SDK enables iOS apps to interact with Particle-powered connected products via the Particle Cloud. It’s an easy-to-use wrapper for Particle REST API. The Cloud SDK will allow you to:

Manage & inject user sessions for the Particle Cloud (access tokens, encrypted session management)
Claim/Unclaim devices for a user account
Get a list of instances of user's Particle devices
Read variables from devices
Invoke functions on devices
Publish events from the mobile app and subscribe to events coming from devices
Get data usage information for Electron devices

All cloud operations take place asynchronously and use the well-known completion blocks (closures for swift) design pattern for reporting results allowing you to build beautiful responsive apps for your Particle products and projects. iOS Cloud SDK is implemented as an open-source CocoaPods static library and also as Carthage dynamic framework dependency. See Installation section for more details. It works well for both Objective-C and Swift projects.

Beta notice

This SDK is still under development and is currently released as Beta. Although tested, bugs and issues may be present. Some code might require cleanup. In addition, until version 1.0 is released, we cannot guarantee that API calls will not break from one Cloud SDK version to the next. Be sure to consult the Change Log for any breaking changes / additions to the SDK.

Getting Started

Perform the installation step described under the Installation section below for integrating in your own project
You can also Download Particle iOS Cloud SDK and try out the included iOS example app
Be sure to check Usage before you begin for some code examples

Usage examples

Cloud SDK usage involves two basic classes: first is ParticleCloud which is a singleton object that enables all basic cloud operations such as user authentication, device listing, claiming etc. Second class is ParticleDevice which is an instance representing a claimed device in the current user session. Each object enables device-specific operation such as: getting its info, invoking functions and reading variables from it.

Return values

Most SDK functions will return an NSURLSessionDataTask object that can be queried by the app developer for further information about the status of the network operation. This is a result of the SDK relying on AFNetworking which is a networking library for iOS and Mac OS X. It's built on top of the Foundation URL Loading System, extending the powerful high-level networking abstractions built into Cocoa. The Particle Cloud SDK has been relying on this powerful library since the beginning, but when version 3.0 was released not long ago it contained some breaking changes, the main change from 2.x is that NSURLConnectionOperation was deprecated by Apple and NSURLSessionDataTask was introduced to replace it. You can ignore the return value (previously it was just void) coming out of the SDK functions, alternatively you can now make use of the NSURLSessionDataTask object as described.

Here are few examples for the most common use cases to get your started:

Logging in to Particle cloud

You don't need to worry about access tokens and session expiry, SDK takes care of that for you

Objective-C

[[ParticleCloud sharedInstance] loginWithUser:@"username@email.com" password:@"userpass" completion:^(NSError *error) {
    if (!error)
        NSLog(@"Logged in to cloud");
    else
        NSLog(@"Wrong credentials or no internet connectivity, please try again");
}];

Swift

ParticleCloud.sharedInstance().login(withUser: "username@email.com", password: "userpass") { (error:Error?) -> Void in
    if let _ = error {
        print("Wrong credentials or no internet connectivity, please try again")
    }
    else {
        print("Logged in")
    }
}

Injecting a session access token (app utilizes two legged authentication)

If you use your own backend to authenticate users in your app - you can now inject the Particle access token your back end gets from Particle cloud easily using one of the new injectSessionAccessToken functions exposed from ParticleCloud singleton class. In turn the .isLoggedIn property has been deprecated in favor of .isAuthenticated - which checks for the existence of an active access token instead of a username. Additionally the SDK will now automatically renew an expired session if a refresh token exists. As increased security measure the Cloud SDK will no longer save user's password in the Keychain.

Objective-C

if ([[ParticleCloud sharedInstance] injectSessionAccessToken:@"9bb9f7433940e7c808b191c28cd6738f8d12986c"])
    NSLog(@"Session is active!");
else
    NSLog(@"Bad access token provided");

Swift

if ParticleCloud.sharedInstance().injectSessionAccessToken("9bb9f7433940e7c808b191c28cd6738f8d12986c") {
    print("Session is active")
} else {
    print("Bad access token provided")
}

Get a list of all devices

List the devices that belong to currently logged in user and find a specific device by name:

Objective-C

__block ParticleDevice *myPhoton;
[[ParticleCloud sharedInstance] getDevices:^(NSArray *particleDevices, NSError *error) {
    NSLog(@"%@",particleDevices.description); // print all devices claimed to user

    for (ParticleDevice *device in particleDevices)
    {
        if ([device.name isEqualToString:@"myNewPhotonName"])
            myPhoton = device;
    }
}];

Swift

var myPhoton : ParticleDevice?
ParticleCloud.sharedInstance().getDevices { (devices:[ParticleDevice]?, error:Error?) -> Void in
    if let _ = error {
        print("Check your internet connectivity")
    }
    else {
        if let d = devices {
            for device in d {
                if device.name == "myNewPhotonName" {
                    myPhoton = device
                }
            }
        }
    }
}

Read a variable from a Particle device (Core/Photon/Electron)

Assuming here that myPhoton is an active instance of ParticleDevice class which represents a device claimed to current user:

Objective-C

[myPhoton getVariable:@"temperature" completion:^(id result, NSError *error) {
    if (!error) {
        NSNumber *temperatureReading = (NSNumber *)result;
        NSLog(@"Room temperature is %f degrees",temperatureReading.floatValue);
    }
    else {
        NSLog(@"Failed reading temperature from Photon device");
    }
}];

Swift

myPhoton!.getVariable("temperature", completion: { (result:Any?, error:Error?) -> Void in
    if let _ = error {
        print("Failed reading temperature from device")
    }
    else {
        if let temp = result as? NSNumber {
            print("Room temperature is \(temp.stringValue) degrees")
        }
    }
})

Call a function on a Particle device (Core/Photon/Electron)

Invoke a function on the device and pass a list of parameters to it, resultCode on the completion block will represent the returned result code of the function on the device. This example also demonstrates usage of the new NSURLSessionDataTask object returned from every SDK function call.

Objective-C

NSURLSessionDataTask *task = [myPhoton callFunction:@"digitalWrite" withArguments:@[@"D7",@1] completion:^(NSNumber *resultCode, NSError *error) {
    if (!error)
    {
        NSLog(@"LED on D7 successfully turned on");
    }
}];
int64_t bytesToReceive  = task.countOfBytesExpectedToReceive;
// ..do something with bytesToReceive

Swift

let funcArgs = ["D7",1]
var task = myPhoton!.callFunction("digitalWrite", withArguments: funcArgs) { (resultCode : NSNumber?, error : Error?) -> Void in
    if (error == nil) {
        print("LED on D7 successfully turned on")
    }
}
var bytesToReceive : Int64 = task.countOfBytesExpectedToReceive
// ..do something with bytesToReceive

Retrieve current data usage (Electron only)

Starting SDK version 0.5.0 Assuming here that myElectron is an active instance of ParticleDevice class which represents an Electron device:

Objective-C

[myElectron getCurrentDataUsage:^(float dataUsed, NSError * _Nullable error) {
    if (!error) {
        NSLog(@"device has used %f MBs of data this month",dataUsed);
    }
}];

Swift

self.selectedDevice!.getCurrentDataUsage { (dataUsed: Float, error :Error?) in
    if (error == nil) {
        print("Device has used "+String(dataUsed)+" MBs this month")
    }
}

List device exposed functions and variables

Functions is just a list of names, variables is a dictionary in which keys are variable names and values are variable types:

Objective-C

NSDictionary *myDeviceVariables = myPhoton.variables;
NSLog(@"MyDevice first Variable is called %@ and is from type %@", myDeviceVariables.allKeys[0], myDeviceVariables.allValues[0]);

NSArray *myDeviceFunctions = myPhoton.functions;
NSLog(@"MyDevice first Function is called %@", myDeviceFunctions[0]);

Swift

let myDeviceVariables : Dictionary? = myPhoton.variables as? Dictionary<String,String>
print("MyDevice first Variable is called \(myDeviceVariables!.keys.first) and is from type \(myDeviceVariables?.values.first)")

let myDeviceFunction = myPhoton.functions
print("MyDevice first function is called \(myDeviceFunction!.first)")

Get an instance of a device

Get a device instance by its ID:

Objective-C

__block ParticleDevice *myOtherDevice;
NSString *deviceID = @"53fa73265066544b16208184";
[[ParticleCloud sharedInstance] getDevice:deviceID completion:^(ParticleDevice *device, NSError *error) {
    if (!error)
        myOtherDevice = device;
}];

Swift

var myOtherDevice : ParticleDevice? = nil
    ParticleCloud.sharedInstance().getDevice("53fa73265066544b16208184", completion: { (device:ParticleDevice?, error:Error?) -> Void in
        if let d = device {
            myOtherDevice = d
        }
    })

Rename a device

you can simply set the .name property or use -rename() method if you need a completion block to be called (for example updating a UI after renaming was done):

Objective-C

myPhoton.name = @"myNewDeviceName";

or

[myPhoton rename:@"myNewDeviecName" completion:^(NSError *error) {
    if (!error)
        NSLog(@"Device renamed successfully");
}];

Swift

myPhoton!.name = "myNewDeviceName"

or

myPhoton!.rename("myNewDeviceName", completion: { (error:Error?) -> Void in
    if (error == nil) {
        print("Device successfully renamed")
    }
})

Logout

Also clears user session and access token

Objective-C

[[ParticleCloud sharedInstance] logout];

Swift

ParticleCloud.sharedInstance().logout()

Events sub-system

You can make an API call that will open a stream of Server-Sent Events (SSEs). You will make one API call that opens a connection to the Particle Cloud. That connection will stay open, unlike normal HTTP calls which end quickly. Very little data will come to you across the connection unless your Particle device publishes an event, at which point you will be immediately notified. In each case, the event name filter is eventNamePrefix and is optional. When specifying an event name filter, published events will be limited to those events with names that begin with the specified string. For example, specifying an event name filter of 'temp' will return events with names 'temp' and 'temperature'.

Subscribe to events

Subscribe to the firehose of public events with name that starts with "temp", plus the private events published by devices one owns:

Objective-C

// The event handler:
ParticleEventHandler handler = ^(ParticleEvent *event, NSError *error) {
        if (!error)
        {
            dispatch_async(dispatch_get_main_queue(), ^{
                NSLog(@"Got Event %@ with data: %@",event.event,event.data);
            });
        }
        else
        {
            NSLog(@"Error occured: %@",error.localizedDescription);
        }

    };

// This line actually subscribes to the event stream:
id eventListenerID = [[ParticleCloud sharedInstance] subscribeToAllEventsWithPrefix:@"temp" handler:handler];

Swift

var handler : Any?
handler = ParticleCloud.sharedInstance().subscribeToAllEvents(withPrefix: "temp", handler: { (event :ParticleEvent?, error : Error?) in
    if let _ = error {
        print ("could not subscribe to events")
    } else {
        DispatchQueue.main.async(execute: {
            print("got event with data \(event?.data)")
        })
    }
})

Note: specifying nil or empty string in the eventNamePrefix parameter will subscribe to ALL events (lots of data!) You can have multiple handlers per event name and/or same handler per multiple events names.

Subscribe to all events, public and private, published by devices the user owns (handler is a Obj-C block or Swift closure):

Objective-C

id eventListenerID = [[ParticleCloud sharedInstance] subscribeToMyDevicesEventsWithPrefix:@"temp" handler:handler];

Swift

var eventListenerID : Any?
eventListenerID = ParticleCloud.sharedInstance().subscribeToMyDevicesEvents(withPrefix: "temp", handler: handler)

Subscribe to events from one specific device (by deviceID, second parameter). If the API user owns the device, then he'll receive all events, public and private, published by that device. If the API user does not own the device he will only receive public events.

Objective-C

id eventListenerID = [[ParticleCloud sharedInstance] subscribeToDeviceEventsWithPrefix:@"temp" deviceID:@"53ff6c065075535119511687" handler:handler];

Swift

var eventListenerID : Any?
eventListenerID = ParticleCloud.sharedInstance().subscribeToDeviceEvents(withPrefix: "temp", deviceID: "53ff6c065075535119511687", handler: handler)

other option is calling same method via the ParticleDevice instance:

Objective-C

id eventListenerID = [device subscribeToEventsWithPrefix:@"temp" handler:handler];

Swift

var eventListenerID : Any?
eventListenerID = device.subscribeToEvents(withPrefix : "temp", handler : handler)

this guarantees that private events will be received since having access device instance in your app signifies that the user has this device claimed.

Unsubscribing from events

Very straightforward. Keep the id object the subscribe method returned and use it as parameter to call the unsubscribe method:

Objective-C

[[ParticleCloud sharedInstance] unsubscribeFromEventWithID:eventListenerID];

Swift

if let sid = eventListenerID {
    ParticleCloud.sharedInstance().unsubscribeFromEvent(withID: sid)
}

or via the ParticleDevice instance (if applicable):

Objective-C

[device unsubscribeFromEventWithID:self.eventListenerID];

Swift

device.unsubscribeFromEvent(withID : eventListenerID)

Publishing an event

You can also publish an event from your app to the Particle Cloud:

Objective-C

[[ParticleCloud sharedInstance] publishEventWithName:@"event_from_app" data:@"event_payload" isPrivate:NO ttl:60 completion:^(NSError *error) {
    if (error)
    {
        NSLog(@"Error publishing event: %@",error.localizedDescription);
    }
}];

Swift

ParticleCloud.sharedInstance().publishEvent(withName: "event_from_app", data: "event_payload", isPrivate: false, ttl: 60, completion: { (error:Error?) -> Void in
    if error != nil
    {
        print("Error publishing event" + e.localizedDescription)
    }
})

Delegate Protocol

Starting version 0.5.0 You can opt-in to conform to the ParticleDeviceDelegate protocol in your viewcontroller code if you want to register for receiving system events notifications about the specific device. You do it by setting device.delegate = self where device is an instance of ParticleDevice.

The function that will be called on the delegate is: -(void)particleDevice:(ParticleDevice *)device didReceiveSystemEvent:(ParticleDeviceSystemEvent)event;

and then you can respond to the various system events by:

func particleDevice(device: ParticleDevice, receivedSystemEvent event: ParticleDeviceSystemEvent) {
        print("Received system event "+String(event.rawValue)+" from device "+device.name!)
        // do something meaningful
    }

The system events types are:

CameOnline (device came online)
WentOffline (device went offline)
FlashStarted (OTA flashing started)
FlashSucceeded (OTA flashing succeeded - new uesr firmware app is live)
FlashFailed (OTA flashing process failed - user firmware app was not updated)
AppHashUpdated (a new app which is different from last one was flashed to the device)
EnteredSafeMode (device has entered safe mode due to system firmware dependency issue )
SafeModeUpdater (device is trying to heal itself out of safe mode)

OAuth client configuration

If you're creating an app you're required to provide the ParticleCloud class with OAuth clientId and secret. Those are used to identify users coming from your specific app to the Particle Cloud. Please follow the procedure decribed in our guide to create those strings, then in your AppDelegate class you can supply those credentials by setting the following properties in ParticleCloud singleton:

@property (nonatomic, strong) NSString *OAuthClientId;
@property (nonatomic, strong) NSString *OAuthClientSecret;

Important Those credentials should be kept as secret. We recommend the use of Cocoapods-keys plugin for cocoapods (which you have to use anyways to install the SDK). It is essentially a key value store for environment and application keys. It's a good security practice to keep production keys out of developer hands. CocoaPods-keys makes it easy to have per-user config settings stored securely in the developer's keychain, and not in the application source. It is a plugin that once installed will run on every pod install or pod update.

After adding the following additional lines your project Podfile:

plugin 'cocoapods-keys', {
    :project => "YourAppName",
    :keys => [
        "OAuthClientId",
        "OAuthSecret"
    ]}

go to your project folder in shell and run pod install - it will now ask you for "OAuthClientId", "OAuthSecret" - you can copy/paste the generated keys there and from that point on you can feed those keys into ParticleCloud by adding this code to your AppDelegate didFinishLaunchingWithOptions function which gets called when your app starts:

Swift example code

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    var keys = YourappnameKeys()
    ParticleCloud.sharedInstance().OAuthClientId = keys.oAuthClientId()
    ParticleCloud.sharedInstance().OAuthClientSecret = keys.oAuthSecret()

    return true
}

Be sure to replace YourAppName with your project name.

Deploying apps with the Particle Cloud SDK

Starting iOS 10 / XCode 8, Apple requires the developer to enable Keychain sharing under the app Capabilities tab when clicking on your target in the project navigator pane. Otherwise an exception will be thrown when a user logs in, the the SDK tries to write the session token to the secure keychain and will fail without this capability enabled. Consult this screenshot for reference:

Installation

CocoaPods

Particle iOS Cloud SDK is available through CocoaPods. CocoaPods is an easy to use dependency manager for iOS. You must have CocoaPods installed, if you don't then be sure to Install CocoaPods before you start: To install the iOS Cloud SDK, simply add the following line to your Podfile on main project folder:

source 'https://github.com/CocoaPods/Specs.git'

target 'YourAppName' do
    pod 'Particle-SDK'
end

Replace YourAppName with your app target name - usually shown as the root item name in the XCode project. In your shell - run pod update in the project folder. A new .xcworkspace file will be created for you to open by Cocoapods, open that file workspace file in Xcode and you can start interacting with Particle cloud and devices by adding #import "Particle-SDK.h". (that is not required for swift projects)

Support for Swift projects

All SDK callbacks return real optionals (ParticleDevice?) instead of implicitly unwrapped optionals (ParticleDevice!).

To use iOS Cloud SDK from within Swift based projects read here. For a detailed step-by-step help on integrating the Cloud SDK within a Swift project check out this Particle community posting.

The Apple documentation is an important resource on mixing Objective-C and Swift code, be sure to read through that as well.

Notice that we've included the required bridging header file in the SDK, you just need to copy it to your project add it as the active bridging header file in the project settings as described in the links above. There's also an example app, this app also demonstrates the Particle DeviceSetup library usage, as well as several Cloud SDK calls.

Carthage (Recommended method)

The SDK is now also available as a Carthage dependency since version 0.4.0. This should solve many issues SDK users has been reporting with mixing Swift dependencies in their projects and having to use the use_frameworks! directive in the Podfile - that flag is required for any dynamic library, which includes anything written in Swift. You must have Carthage tool installed, if you don't then be sure to install Carthage before you start. Then to build the iOS Cloud SDK, simply create a Cartfile on your project root folder, containing the following line:

github "particle/particle-sdk-ios" "master"

and then run the following command: carthage update --platform iOS --use-submodules --no-use-binaries. A new folder will be created in your project root folder - navigate to the ./Carthage/Build/iOS folder and drag all the created .frameworks file into your project in XCode. Go to your XCode target settings->General->Embedded binaries and make sure the ParticleSDK.framework and the AFNetworking.framework are listed there. Build your project - you now have the Particle SDK embedded in your project.

Carthage example

A new example app demonstrating the usage of Carthage installation method is available here. This app is meant to serve as basic example for using the Particle Cloud SDK and Device Setup Library in the Carthage dependencies form. To get this example app running, clone it, open the project in XCode and:

Flash the firmware.c (included in the repo project) firmware to an online photon available under your account, use Build or Dev or CLI.
Set Photon's name to the constant deviceName in the testCloudSDK() function
Set your username/password to the appropriate constants, same place
Go the project root folder in your shell, run the setup shell script (under the /bin folder) which will build the latest Particle SDK 1. Carthage dependencies
Drag the 3 created .framework files under /Carthage/Build/iOS to your project
Go to XCode's target general settings and also add those frameworks to "embedded binaries"
Run and experiment!

Reference

ParticleCloud class

@property (nonatomic, strong, nullable, readonly) NSString* loggedInUsername

Currently logged in user name, nil if no valid session

@property (nonatomic, readonly) BOOL isAuthenticated

Currently authenticated (does a access token exist?)

@property (nonatomic, strong, nullable, readonly) NSString *accessToken

Current session access token string, nil if not logged in

@property (nonatomic, nullable, strong) NSString *oAuthClientId

oAuthClientId unique for your app, use 'particle' for development or generate your OAuth creds for production apps (https://docs.particle.io/reference/api/#create-an-oauth-client)

@property (nonatomic, nullable, strong) NSString *oAuthClientSecret

oAuthClientSecret unique for your app, use 'particle' for development or generate your OAuth creds for production apps (https://docs.particle.io/reference/api/#create-an-oauth-client)

+ (instancetype)sharedInstance

Singleton instance of ParticleCloud class

Returns: initialized ParticleCloud singleton

-(NSURLSessionDataTask *)loginWithUser:(NSString *)user password:(NSString *)password completion:(nullable ParticleCompletionBlock)completion

Login with existing account credentials to Particle cloud

Parameters:
- user — User name, must be a valid email address
- password — Password
- completion — Completion block will be called when login finished, NS/Error object will be passed in case of an error, nil if success

-(NSURLSessionDataTask *)createUser:(NSString *)username password:(NSString *)password accountInfo:(nullable NSDictionary *)accountInfo completion:(nullable ParticleCompletionBlock)completion

Sign up with new account credentials to Particle cloud

Parameters:
- user — Required user name, must be a valid email address
- password — Required password
- accountInfo — Optional dictionary with extended account info fields: firstName, lastName, isBusinessAccount [NSNumber @0=false, @1=true], companyName
- completion — Completion block will be called when sign-up finished, NSError object will be passed in case of an error, nil if success

-(nullable NSURLSessionDataTask *)createCustomer:(NSString *)username password:(NSString *)password productId:(NSUInteger)productId accountInfo:(nullable NSDictionary *)accountInfo completion:(nullable ParticleCompletionBlock)completion

Sign up with new account credentials to Particle cloud

Parameters:
- username — Required user name, must be a valid email address
- password — Required password
- productId — Required ProductID number should be copied from console for your specific product
- accountInfo — Optional account information metadata that contains fields: first_name, last_name, company_name, business_account [boolean] - currently has no effect for customers
- completion — Completion block will be called when sign-up finished, NSError object will be passed in case of an error, nil if success

-(void)logout

Logout user, remove session data

-(BOOL)injectSessionAccessToken:(NSString * _Nonnull)accessToken

Inject session access token received from a custom backend service in case Two-legged auth is being used. This session expected not to expire, or at least SDK won't know about its expiration date.

Parameters: accessToken — Particle Access token string
Returns: YES if session injected successfully

-(BOOL)injectSessionAccessToken:(NSString *)accessToken withExpiryDate:(NSDate *)expiryDate

Inject session access token received from a custom backend service in case Two-legged auth is being used. Session will expire at expiry date.

Parameters:
- accessToken — Particle Access token string
- expiryDate — Date/time in which session expire and no longer be active - you'll have to inject a new session token at that point.
Returns: YES if session injected successfully

-(BOOL)injectSessionAccessToken:(NSString *)accessToken withExpiryDate:(NSDate *)expiryDate andRefreshToken:(NSString *)refreshToken

Inject session access token received from a custom backend service in case Two-legged auth is being used. Session will expire at expiry date, and SDK will try to renew it using supplied refreshToken.

Parameters:
- accessToken — Particle Access token string
- expiryDate — Date/time in which session expire
- refreshToken — Refresh token will be used automatically to hit Particle cloud to create a new active session access token.
Returns: YES if session injected successfully

-(NSURLSessionDataTask *)requestPasswordResetForCustomer:(NSString *)email productId:(NSUInteger)productId completion:(nullable ParticleCompletionBlock)completion

Request password reset for customer (in product mode) command generates confirmation token and sends email to customer using org SMTP settings

Parameters:
- email — user email
- productId — Product ID number
- completion — Completion block with NSError object if failure, nil if success

-(NSURLSessionDataTask *)requestPasswordResetForUser:(NSString *)email completion:(nullable ParticleCompletionBlock)completion

Request password reset for user command generates confirmation token and sends email to customer using org SMTP settings

Parameters:
- email — user email
- completion — Completion block with NSError object if failure, nil if success

-(NSURLSessionDataTask *)getDevices:(nullable void (^)(NSArray<ParticleDevice *> * _Nullable particleDevices, NSError * _Nullable error))completion

Get an array of instances of all user's claimed devices offline devices will contain only partial data (no info about functions/variables)

Parameters: completion — Completion block with the device instances array in case of success or with NSError object if failure
Returns: NSURLSessionDataTask task for requested network access

-(NSURLSessionDataTask *)getDevice:(NSString *)deviceID completion:(nullable void (^)(ParticleDevice * _Nullable device, NSError * _Nullable error))completion

Get a specific device instance by its deviceID. If the device is offline the instance will contain only partial information the cloud has cached, notice that the the request might also take quite some time to complete for offline devices.

Parameters:
- deviceID — required deviceID
- completion — Completion block with first arguemnt as the device instance in case of success or with second argument NSError object if operation failed
Returns: NSURLSessionDataTask task for requested network access

-(NSURLSessionDataTask *)claimDevice:(NSString *)deviceID completion:(nullable ParticleCompletionBlock)completion

Claim the specified device to the currently logged in user (without claim code mechanism)

Parameters:
- deviceID — required deviceID
- completion — Completion block with NSError object if failure, nil if success
Returns: NSURLSessionDataTask task for requested network access

-(NSURLSessionDataTask *)generateClaimCode:(nullable void(^)(NSString * _Nullable claimCode, NSArray * _Nullable userClaimedDeviceIDs, NSError * _Nullable error))completion

Get a short-lived claiming token for transmitting to soon-to-be-claimed device in soft AP setup process

Parameters: completion — Completion block with claimCode string returned (48 random bytes base64 encoded to 64 ASCII characters), second argument is a list of the devices currently claimed by current session user and third is NSError object for failure, nil if success
Returns: NSURLSessionDataTask task for requested network access

-(NSURLSessionDataTask *)generateClaimCodeForProduct:(NSUInteger)productId completion:(nullable void(^)(NSString *_Nullable claimCode, NSArray * _Nullable userClaimedDeviceIDs, NSError * _Nullable error))completion

Get a short-lived claiming token for transmitting to soon-to-be-claimed device in soft AP setup process for specific product and organization (different API endpoints)

Parameters:
- productId — - the product id number
- completion — Completion block with claimCode string returned (48 random bytes base64 encoded to 64 ASCII characters), second argument is a list of the devices currently claimed by current session user and third is NSError object for a failure, nil if success
Returns: NSURLSessionDataTask task for requested network access

-(nullable id)subscribeToAllEventsWithPrefix:(nullable NSString *)eventNamePrefix handler:(nullable ParticleEventHandler)eventHandler

Subscribe to the firehose of public events, plus private events published by devices one owns

Parameters:
- eventHandler — ParticleEventHandler event handler method - receiving NSDictionary argument which contains keys: event (name), data (payload), ttl (time to live), published_at (date/time emitted), coreid (device ID). Second argument is NSError object in case error occured in parsing the event payload.
- eventName — Filter only events that match name eventName, if nil is passed any event will trigger eventHandler
Returns: eventListenerID function will return an id type object as the eventListener registration unique ID - keep and pass this object to the unsubscribe method in order to remove this event listener

-(nullable id)subscribeToMyDevicesEventsWithPrefix:(nullable NSString *)eventNamePrefix handler:(nullable ParticleEventHandler)eventHandler

Subscribe to all events, public and private, published by devices one owns

Parameters:
- eventHandler — Event handler function that accepts the event payload dictionary and an NSError object in case of an error
- eventNamePrefix — Filter only events that match name eventNamePrefix, for exact match pass whole string, if nil/empty string is passed any event will trigger eventHandler
Returns: eventListenerID function will return an id type object as the eventListener registration unique ID - keep and pass this object to the unsubscribe method in order to remove this event listener

-(nullable id)subscribeToDeviceEventsWithPrefix:(nullable NSString *)eventNamePrefix deviceID:(NSString *)deviceID handler:(nullable ParticleEventHandler)eventHandler

Subscribe to events from one specific device. If the API user has the device claimed, then she will receive all events, public and private, published by that device. If the API user does not own the device she will only receive public events.

Parameters:
- eventNamePrefix — Filter only events that match name eventNamePrefix, for exact match pass whole string, if nil/empty string is passed any event will trigger eventHandler
- deviceID — Specific device ID. If user has this device claimed the private & public events will be received, otherwise public events only are received.
- eventHandler — Event handler function that accepts the event payload dictionary and an NSError object in case of an error
Returns: eventListenerID function will return an id type object as the eventListener registration unique ID - keep and pass this object to the unsubscribe method in order to remove this event listener

-(void)unsubscribeFromEventWithID:(id)eventListenerID

Unsubscribe from event/events.

Parameters: eventListenerID — The eventListener registration unique ID returned by the subscribe method which you want to cancel

-(NSURLSessionDataTask *)publishEventWithName:(NSString *)eventName data:(NSString *)data isPrivate:(BOOL)isPrivate ttl:(NSUInteger)ttl completion:(nullable ParticleCompletionBlock)completion

Subscribe to events from one specific device. If the API user has the device claimed, then she will receive all events, public and private, published by that device. If the API user does not own the device she will only receive public events.

Parameters:
- eventName — Publish event named eventName
- data — A string representing event data payload, you can serialize any data you need to represent into this string and events listeners will get it
- private — A boolean flag determining if this event is private or not (only users's claimed devices will be able to listen to it)
- ttl — TTL stands for Time To Live. It it the number of seconds that the event data is relevant and meaningful. For example, an outdoor temperature reading with a precision of integer degrees Celsius might have a TTL of somewhere between 600 (10 minutes) and 1800 (30 minutes).
  
  The geolocation of a large piece of farm equipment that remains stationary most of the time but may be moved to a different field once in a while might have a TTL of 86400 (24 hours). After the TTL has passed, the information can be considered stale or out of date.
Returns: NSURLSessionDataTask task for requested network access

ParticleDevice class

typedef void (^ParticleCompletionBlock)(NSError * _Nullable error)

Standard completion block for API calls, will be called when the task is completed with a nullable error object that will be nil if the task was successful.

@property (strong, nonatomic, readonly) NSString* id

DeviceID string

@property (strong, nullable, nonatomic) NSString* name

Device name. Device can be renamed in the cloud by setting this property. If renaming fails name will stay the same.

@property (nonatomic, readonly) BOOL connected

Is device connected to the cloud? Best effort - May not accurate reflect true state.

@property (strong, nonatomic, nonnull, readonly) NSArray<NSString *> *functions

List of function names exposed by device

@property (strong, nonatomic, nonnull, readonly) NSDictionary<NSString *, NSString *> *variables

Dictionary of exposed variables on device with their respective types.

@property (strong, nonatomic, readonly) NSString *version

Device firmware version string

-(NSURLSessionDataTask *)getVariable:(NSString *)variableName completion:(nullable void(^)(id _Nullable result, NSError* _Nullable error))completion

Retrieve a variable value from the device

Parameters:
- variableName — Variable name
- completion — Completion block to be called when function completes with the variable value retrieved (as id/Any) or NSError object in case on an error

-(NSURLSessionDataTask *)callFunction:(NSString *)functionName withArguments:(nullable NSArray *)args completion:(nullable void (^)(NSNumber * _Nullable result, NSError * _Nullable error))completion

Call a function on the device

Parameters:
- functionName — Function name
- args — Array of arguments to pass to the function on the device. Arguments will be converted to string maximum length 63 chars.
- completion — Completion block will be called when function was invoked on device. First argument of block is the integer return value of the function, second is NSError object in case of an error invoking the function

-(NSURLSessionDataTask *)signal:(BOOL)enable completion:(nullable ParticleCompletionBlock)completion

Signal device Will make the onboard LED "shout rainbows" for easy physical identification of a device

Parameters: enale — - YES to start or NO to stop LED signal.

-(NSURLSessionDataTask *)refresh:(nullable ParticleCompletionBlock)completion

Request device refresh from cloud update online status/functions/variables/device name, etc

Parameters: completion — Completion block called when function completes with NSError object in case of an error or nil if success.

-(NSURLSessionDataTask *)unclaim:(nullable ParticleCompletionBlock)completion

Remove device from current logged in user account

Parameters: completion — Completion block called when function completes with NSError object in case of an error or nil if success.

-(NSURLSessionDataTask *)rename:(NSString *)newName completion:(nullable ParticleCompletionBlock)completion

Rename device

Parameters:
- newName — New device name
- completion — Completion block called when function completes with NSError object in case of an error or nil if success.

-(NSURLSessionDataTask *)getCurrentDataUsage:(nullable void(^)(float dataUsed, NSError* _Nullable error))completion

Retrieve current data usage report (For Electron only)

Parameters: completion — Completion block to be called when function completes with the data used in current payment period in (float)MBs. All devices other than Electron will return an error with -1 value

-(nullable NSURLSessionDataTask *)flashFiles:(NSDictionary *)filesDict completion:(nullable ParticleCompletionBlock)completion

Flash files to device

Parameters:
- filesDict — files dictionary in the following format: @{@"filename.bin" : , ...} - that is a NSString filename as key and NSData blob as value. More than one file can be flashed. Data is alway binary.
- completion — Completion block called when function completes with NSError object in case of an error or nil if success. NSError.localized descripion will contain a detailed error report in case of a

-(NSURLSessionDataTask *)flashKnownApp:(NSString *)knownAppName completion:(nullable ParticleCompletionBlock)completion

Flash known firmware images to device

Parameters:
- knownAppName — NSString of known app name. Currently @"tinker" is supported.
- completion — Completion block called when function completes with NSError object in case of an error or nil if success. NSError.localized descripion will contain a detailed error report in case of a

-(nullable id)subscribeToEventsWithPrefix:(nullable NSString *)eventNamePrefix handler:(nullable ParticleEventHandler)eventHandler

Subscribe to events from this specific (claimed) device - both public and private.

Parameters:
- eventNamePrefix — Filter only events that match name eventNamePrefix, for exact match pass whole string, if nil/empty string is passed any event will trigger eventHandler
- eventHandler — Event handler function that accepts the event payload dictionary and an NSError object in case of an error

-(void)unsubscribeFromEventWithID:(id)eventListenerID

Unsubscribe from event/events.

Parameters: eventListenerID — The eventListener registration unique ID returned by the subscribe method which you want to cancel

Communication

If you need help, use Our community website, use the Mobile category for dicussion/troubleshooting iOS apps using the Particle iOS Cloud SDK.
If you are certain you found a bug, and can provide steps to reliably reproduce it, open an issue, label it as bug.
If you have a feature request, open an issue with an enhancement label on it
If you want to contribute, submit a pull request, be sure to check out particle.github.io for our contribution guidelines, and please sign the CLA.

Maintainers

Ido Kleinman Github | Twitter

License

Particle iOS Cloud SDK is available under the Apache License 2.0. See the LICENSE file for more info.

Name		Name	Last commit message	Last commit date
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Carthage/Checkouts		Carthage/Checkouts
Example		Example
ParticleSDK		ParticleSDK
Pod/Classes		Pod/Classes
bin		bin
.gitignore		.gitignore
.gitmodules		.gitmodules
.swift-version		.swift-version
.travis.yml		.travis.yml
CHANGELOG.md		CHANGELOG.md
Cartfile		Cartfile
Cartfile.resolved		Cartfile.resolved
LICENSE		LICENSE
Particle-SDK.podspec		Particle-SDK.podspec
README.md		README.md

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Particle iOS Cloud SDK

Introduction

Getting Started

Usage examples

Return values

Logging in to Particle cloud

Injecting a session access token (app utilizes two legged authentication)

Get a list of all devices

Read a variable from a Particle device (Core/Photon/Electron)

Call a function on a Particle device (Core/Photon/Electron)

Retrieve current data usage (Electron only)

List device exposed functions and variables

Get an instance of a device

Rename a device

Logout

Events sub-system

Subscribe to events

Unsubscribing from events

Publishing an event

Delegate Protocol

OAuth client configuration

Deploying apps with the Particle Cloud SDK

Installation

CocoaPods

Support for Swift projects

Carthage (Recommended method)

Carthage example

Reference

ParticleCloud class

ParticleDevice class

Communication

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