Pebble Watch iOS SDK Overview

Pebble Watchmatthewmorey.com | @xzolian

matthewmorey.com | @xzolian

http://buoyexplorer.com



☐ What is the Pebble☐ Why you should develop for the Pebble☐ How to develop for the Pebble

Agenda

Demo

vs

ARM Cortex-M3 MCU 120 MHz

Apple A6ARMv7 1.3 GHz

Dual Core

128 KB RAMUp to 8 apps

1 GB RAMUp to 64 GB storage

144 x 168 pixels1-bit color“e-paper”

1,136 × 640 pixels24-bit Color

“Retina”

Pebble iPhone 5

CPU

Memory

Screen

Bluetooth 2.1 and 4.0 LE

Bluetooth 4.0802.11a/b/g/n Wi-Fi

Cellular LTE

3-axis accelerometerAmbient light

Magnetometer

Three-axis gyroAccelerometer

Proximity sensorAmbient light sensor

4 buttonsVibration

Screen backlight

Touch screenButtons

VibrationCamera

Pebble iPhone 5

Comm.

Sensors

IO

2 to 14 days ~1 day

FreeRTOSPebble SDK

PebbleKit

iOSiOS SDK

5 ATM water resistance

22 mm watch band

Not water resistantCan’t wear on wrist

Pebble iPhone 5

Battery

Software

Other

Issues

☑ What is the Pebble☐ Why you should develop for the Pebble☐ How to develop for the Pebble

Agenda

LunaTik

“I agree to wear you around and share a lot of personal data

with you.”

- Customers

$10,266,846 - Pebble Watch (design)

$8,596,475 - OUYA (Android console)

$5,702,153 - Veronica Mars (movie)

$4,188,927 - Torment: Tides of Numenera (game)

$3,986,929 - Project Eternity (game)

http://www.quora.com/Pebble-Watch

http://www.quora.com/Pebble-Watch

http://www.quora.com/OUYA-Android-console

http://www.quora.com/OUYA-Android-console

$6 Billionper year

Units Sold

Pebble iPhone

>100,000

>250 Million

iOS 7

☑ What is the Pebble☑ Why you should develop for the Pebble☐ How to develop for the Pebble

Agenda

Pebble SDK

1. Pebble SDK dependencies2. Pebble SDK3. ARM dependencies4. Pebble ARM toolchain

Install

Hello World

$ create_pebble_project.py \ > PebbleSDK-1.12/Pebble/sdk \ > hello_world

1 #include "pebble_os.h" 2 #include "pebble_app.h" 3 #include "pebble_fonts.h" 4 5 #define MY_UUID { 6 0x20, 0xD9, 0xFB, 0x8F, 0xBE, 0xCF, 0x49, 7 0x94, 0xA9, 0xE8, 0x70, 0xC0, 0xEA, 0xC6, 8 0x50, 0x16 9 }10 11 PBL_APP_INFO(12 MY_UUID,13 "Hello World",14 "Acme Corp",15 1, 0, /* App version */16 DEFAULT_MENU_ICON,17 APP_INFO_STANDARD_APP18 );



20 Window window;21 22 void handle_init(AppContextRef ctx) {23 window_init(&window, "Window Name");24 window_stack_push(&window,true/*Animated*/);25 }26 27 28 void pbl_main(void *params) {29 PebbleAppHandlers handlers = {30 .init_handler = &handle_init31 };32 app_event_loop(params, &handlers);33 }




15 TextLayer hello_layer;16 17 void handle_init(AppContextRef ctx) {18 19 window_init(&window, "Window Name");20 window_stack_push(&window, true /* Animated */);21 22 text_layer_init(&hello_layer, GRect(0, 65, 144, 30));23 text_layer_set_text_alignment(&hello_layer,GTextAlignmentCenter);24 text_layer_set_text(&hello_layer, "Hello World!");25 text_layer_set_font(26 &hello_layer,27 fonts_get_system_font(FONT_KEY_ROBOTO_CONDENSED_21)28 );2930 layer_add_child(&window.layer, &hello_layer.layer);31 32 }

15 TextLayer hello_layer;16 17 void handle_init(AppContextRef ctx) {18 19 window_init(&window, "Window Name");20 window_stack_push(&window, true /* Animated */);21 22 text_layer_init(&hello_layer, GRect(0, 65, 144, 30));23 text_layer_set_text_alignment(&hello_layer,GTextAlignmentCenter);24 text_layer_set_text(&hello_layer, "Hello World!");25 text_layer_set_font(26 &hello_layer,27 fonts_get_system_font(FONT_KEY_ROBOTO_CONDENSED_21)28 );2930 layer_add_child(&window.layer, &hello_layer.layer);31 32 }

$ ./waf configure$ ./waf build$ python -m SimpleHTTPServer 8000

$ ./waf configure$ ./waf build$ python -m SimpleHTTPServer 8000

Demo

PBW Filehello_world.pbw (zip archive)

app_resources.pbpack (binary)

manifest.json (txt/json)

pebble-app.bin (binary)

App Watch Face

Sports Apps

Event Handlers

On-screen Layers

Resources

Window Stack

View Lifecycle

load

appear

disappear

unload

viewDidLoad

viewWillAppear

viewDidAppear

viewWillDisappear

viewDidDisappear

Pebble iOS

https://developer.apple.com/library/ios/documentation/uikit/reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instm/UIViewController/viewWillAppear:

https://developer.apple.com/library/ios/documentation/uikit/reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instm/UIViewController/viewWillAppear:

https://developer.apple.com/library/ios/documentation/uikit/reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instm/UIViewController/viewDidAppear:

https://developer.apple.com/library/ios/documentation/uikit/reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instm/UIViewController/viewDidAppear:

https://developer.apple.com/library/ios/documentation/uikit/reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instm/UIViewController/viewWillDisappear:

https://developer.apple.com/library/ios/documentation/uikit/reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instm/UIViewController/viewWillDisappear:

https://developer.apple.com/library/ios/documentation/uikit/reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instm/UIViewController/viewDidDisappear:

https://developer.apple.com/library/ios/documentation/uikit/reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instm/UIViewController/viewDidDisappear:

Layers

Layers10

Layers20

10

Frame

Layers

20

20

Frame

Layers

-100

Bounds

Layers

60

20

Bounds

animation_init() ...animation_schedule()

.update called

.update called ....update called

Animation scheduled

.stopped called

App Pebble OS

Animation

Animation stopped

.started called

Input Handlers

Resourcesraw

png

png-trans

font

Debuggingapp_log

vibes_short_pulsevibes_double_pulsevibes_long_pulse

light_enable_interaction

Watch <=> Phone

app_message_out_send() Dictionary

ACK .out_sent calledAccepted

app_message_out_send() Dictionary

NACK .out_failed calledRejected

Pebble Phone

AppMessage

.in_received called Dictionary

ACK

Sending

Pebble Phone

AppMessage

.in_received called Dictionary

NACK

Sending

app_sync_set(...)

tuple_changed

Accepted

Sending

Pebble Phone

AppSync

190 - (void)setTargetWatch:(PBWatch*)watch {191 192 self.watch = watch;193 194 // Test if the Pebble's firmware supports AppMessages195 [watch appMessagesGetIsSupported: ^(PBWatch *watch, BOOL isAppMessagesSupported) {196197 if (isAppMessagesSupported) {198 199 // Configure communications channel to target the weather app:200 uint8_t bytes[] = {201 0x42, 0xc8, 0x6e, 0xa4, 0x1c, 0x3e, 0x4a, 0x07, 202 0xb8, 0x89, 0x2c, 0xcc, 0xca, 0x91, 0x41, 0x98};203 NSData *uuid = [NSData dataWithBytes:bytes length:sizeof(bytes)];204 [watch appMessagesSetUUID:uuid];205 206 [self updateWatch];207 208 } 209210 }];211 } iOS



259 - (void)updateWatch {260 261 NSDictionary *update = @{262 kKeyWatchIcon:[NSNumber numberWithUint8:1],263 kKeyWatchTemperature:[NSString stringWithFormat:@"%.1f \u00B0F", @”90”]264 };265 266 [self.watch appMessagesPushUpdate:update onSent: ^(PBWatch *watch, NSDictionary *update, NSError *error) {267 268 if (error) {269 // Message was not sent270 } else {271 // Message was sent272 }273 274 }];275 276 }

iOS


iOS


iOS

296 - (BOOL)handleWatchUpdate:(PBWatch *)watch message:(NSDictionary *)message {299 300 if ([message objectForKey:kKeyWatchRequestUpdate]) {301 NSLog(@"Forecast update requested");303 return YES;304 }305 306 return NO;307 308 }

402 self.updateHandler = [self.watch appMessagesAddReceiveUpdateHandler: ^BOOL(PBWatch *watch, NSDictionary *update) {403 return [self handleWatchUpdate:watch message:update];404 }];

iOS



iOS



iOS

171 void pbl_main(void *params) {172 173 PebbleAppHandlers handlers = {174 175 .init_handler = &app_init,176 .deinit_handler = &app_deinit,177 .messaging_info = {178 .buffer_sizes = {179 .inbound = 64,180 .outbound = 16,181 }182 },183 // Handle time updates184 .tick_info = {185 .tick_handler = &handle_minute_tick,186 .tick_units = MINUTE_UNIT187 }188 };189 190 app_event_loop(params, &handlers);191 192 }

Pebble


Pebble


Pebble


Pebble


Pebble

116 static void app_init(AppContextRef c) {117118 resource_init_current_app(&WEATHER_APP_RESOURCES);119 120 Window* window = &s_data.window;121 window_init(window, "PebbleWeather");122 window_set_background_color(window, GColorBlack);123 window_set_fullscreen(window, true);124

...149 // Watch <--> Phone communication150 Tuplet initial_values[] = {151 TupletInteger(WEATHER_ICON_KEY, (uint8_t) 1),152 TupletCString(WEATHER_TEMPERATURE_KEY, "-\u00B0C"),153 };154 app_sync_init(&s_data.sync, s_data.sync_buffer, sizeof(s_data.sync_buffer), initial_values, ARRAY_LENGTH(initial_values), sync_tuple_changed_callback, sync_error_callback, NULL);155 156 window_stack_push(window, true);157 168 } Pebble







104 // Send message to phone asking for a weather update105 void request_weather_update() {106 107 vibes_double_pulse();108 109 Tuplet values[] = {110 TupletInteger(WEATHER_FORECAST_REQUEST_KEY, 1),111 };112 app_sync_set(&s_data.sync, values, ARRAY_LENGTH(values));113 114 }

Pebble

104 // Send message to phone asking for a weather update105 void request_weather_update() {106 107 vibes_double_pulse();108 109 Tuplet values[] = {110 TupletInteger(WEATHER_FORECAST_REQUEST_KEY, 1),111 };112 app_sync_set(&s_data.sync, values, ARRAY_LENGTH(values));113 114 }

Pebble

65 // Tuple changed 66 static void sync_tuple_changed_callback( const uint32_t key, const Tuple* new_tuple, const Tuple* old_tuple, void* context) { 67 68 switch (key) { 69 case WEATHER_ICON_KEY: 70 load_bitmap(WEATHER_ICONS[new_tuple->value->uint8]); 71 bitmap_layer_set_bitmap( &s_data.icon_layer, &s_data.icon_bitmap.bmp ); 72 break; 73 74 case WEATHER_TEMPERATURE_KEY: 75 text_layer_set_text( &s_data.temperature_layer, new_tuple->value->cstring ); 76 break; 77 78 default: 79 return; 80 } 81 } Pebble



☑ What is the Pebble☑ Why you should develop for the Pebble☑ How to develop for the Pebble

Agenda

Questions?

matthewmorey.com | @xzolian

CreditsPicturesPebble, Pebble Forums, Pebble SubReddit, iFixIt, Wired, Verge, Lifehacker, BBC, MyPebbleFaces, Kickstarter, indiegogo, Wikipedia

Technology

Pebble Watch iOS SDK Overview