Sarah Marsh / Mbed OS U_Blox_DeviceConnector

Example of C027 with connector

Dependencies:   C027Interface

Fork of U_Blox_DeviceConnector by Suraj Pal

README.md@1:e06e899acba6, 2016-07-27 (annotated)

Committer:
Yogesh Pande
Date:
Wed Jul 27 13:49:22 2016 +0300
Revision:
1:e06e899acba6
Parent:
0:7d5ec759888b
Child:
5:b7d7ca715fdb
IPv6 depedency removed, udpated README and mbed_app.json

Removing atmel-rf-driver.lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Yogesh Pande 0:7d5ec759888b 1 # Getting started with mbed Client on mbed OS
Yogesh Pande 0:7d5ec759888b 2
Yogesh Pande 0:7d5ec759888b 3 This is the mbed Client example for mbed OS (we also have one for [Linux](https://github.com/ARMmbed/mbed-client-linux-example)). It demonstrates how to register a device with mbed Device Connector, how to read and write values, and how to deregister. If you are unfamiliar with mbed Device Connector, we recommend that you read [the introduction to the data model](https://docs.mbed.com/docs/mbed-device-connector-web-interfaces/en/latest/#the-mbed-device-connector-data-model) first.
Yogesh Pande 0:7d5ec759888b 4
Yogesh Pande 0:7d5ec759888b 5 The application:
Yogesh Pande 0:7d5ec759888b 6
Yogesh Pande 0:7d5ec759888b 7 * Connects to network with WiFi, Ethernet, 6LoWPAN ND or Thread connection.
Yogesh Pande 0:7d5ec759888b 8 * Registers with mbed Device Connector.
Yogesh Pande 0:7d5ec759888b 9 * Gives mbed Device Connector access to its resources (read and write).
Yogesh Pande 0:7d5ec759888b 10 * Records the number of clicks on the device’s button and sends the number to mbed Device Connector.
Yogesh Pande 0:7d5ec759888b 11 * Lets you control the blink pattern of the LED on the device (through mbed Device Connector).
Yogesh Pande 0:7d5ec759888b 12
Yogesh Pande 0:7d5ec759888b 13 ## Required hardware
Yogesh Pande 0:7d5ec759888b 14
Yogesh Pande 0:7d5ec759888b 15 * [FRDM-K64F](http://developer.mbed.org/platforms/frdm-k64f/) board.
Yogesh Pande 0:7d5ec759888b 16 * 1-2 micro-USB cables.
Yogesh Pande 0:7d5ec759888b 17 * [mbed 6LoWPAN gateway router](https://firefly-iot.com/product/firefly-6lowpan-gateway-2-4ghz/) for 6LoWPAN ND and Thread.
Yogesh Pande 0:7d5ec759888b 18 * mbed 6LoWPAN shield (AT86RF212B/[AT86RF233](https://firefly-iot.com/product/firefly-arduino-shield-2-4ghz/)) for 6LoWPAN ND and Thread.
Yogesh Pande 0:7d5ec759888b 19 * Ethernet cable and connection to the internet.
Yogesh Pande 0:7d5ec759888b 20
Yogesh Pande 0:7d5ec759888b 21 ## Required software
Yogesh Pande 0:7d5ec759888b 22
Yogesh Pande 0:7d5ec759888b 23 * [ARM mbed account](https://developer.mbed.org/account/login/?next=/).
Yogesh Pande 0:7d5ec759888b 24 * [mbed-cli](https://github.com/ARMmbed/mbed-cli) - to build the example programs. To learn how to build mbed OS applications with mbed-cli, see [the user guide](https://github.com/ARMmbed/mbed-cli/blob/master/README.md).
Yogesh Pande 0:7d5ec759888b 25 * [Serial port monitor](https://developer.mbed.org/handbook/SerialPC#host-interface-and-terminal-applications).
Yogesh Pande 0:7d5ec759888b 26
Yogesh Pande 0:7d5ec759888b 27 ## Application setup
Yogesh Pande 0:7d5ec759888b 28
Yogesh Pande 0:7d5ec759888b 29 To configure the example application, please:
Yogesh Pande 0:7d5ec759888b 30
Yogesh Pande 0:7d5ec759888b 31 1. [Select the connection type](#connection-type).
Yogesh Pande 0:7d5ec759888b 32 1. [Set the client credentials](#client-credentials).
Yogesh Pande 0:7d5ec759888b 33 1. [Change 6LoWPAN ND & Thread settings](#6lowpan-nd-and-thread-settings).
Yogesh Pande 0:7d5ec759888b 34 1. [Change Ethernet settings](#ethernet-settings).
Yogesh Pande 0:7d5ec759888b 35 1. [Change Wi-Fi settings](#wi-fi-settings).
Yogesh Pande 0:7d5ec759888b 36 1. [Set up an IP address](#ip-address-setup). This step is optional.
Yogesh Pande 0:7d5ec759888b 37 1. [Change the socket type](#changing-socket-type). This step is optional.
Yogesh Pande 0:7d5ec759888b 38
Yogesh Pande 0:7d5ec759888b 39 ### Connection type
Yogesh Pande 0:7d5ec759888b 40
Yogesh Pande 0:7d5ec759888b 41 The application uses Ethernet as the default connection type. To change the connection type, set one of them in `mbed_app.json`. For example, to enable 6LoWPAN ND mode:
Yogesh Pande 0:7d5ec759888b 42
Yogesh Pande 0:7d5ec759888b 43 ```json
Yogesh Pande 0:7d5ec759888b 44 "network-interface": {
Yogesh Pande 0:7d5ec759888b 45 "help": "options are ETHERNET,WIFI,MESH_LOWPAN_ND,MESH_THREAD.",
Yogesh Pande 0:7d5ec759888b 46 "value": "MESH_LOWPAN_ND"
Yogesh Pande 0:7d5ec759888b 47 }
Yogesh Pande 0:7d5ec759888b 48 ```
Yogesh Pande 0:7d5ec759888b 49
Yogesh Pande 0:7d5ec759888b 50 ### Client credentials
Yogesh Pande 0:7d5ec759888b 51
Yogesh Pande 0:7d5ec759888b 52 To register the application to the Connector service, you need to create and set the client side certificate.
Yogesh Pande 0:7d5ec759888b 53
Yogesh Pande 0:7d5ec759888b 54 1. Go to [mbed Device Connector](https://connector.mbed.com) and log in with your mbed account.
Yogesh Pande 0:7d5ec759888b 55 1. On mbed Device Connector, go to [My Devices > Security credentials](https://connector.mbed.com/#credentials) and click the **Get my device security credentials** button to get new credentials for your device.
Yogesh Pande 0:7d5ec759888b 56 1. Replace the contents in `security.h` of this project's directory with content copied above.
Yogesh Pande 0:7d5ec759888b 57
Yogesh Pande 0:7d5ec759888b 58 ### 6LoWPAN ND and Thread settings
Yogesh Pande 0:7d5ec759888b 59
Yogesh Pande 1:e06e899acba6 60 First you need to select the RF driver to be used by 6LoWPAN/Thread stack.
Yogesh Pande 1:e06e899acba6 61
Yogesh Pande 1:e06e899acba6 62 For example Atmel AT86RF233/212B driver is located in https://github.com/ARMmbed/atmel-rf-driver
Yogesh Pande 1:e06e899acba6 63
Yogesh Pande 1:e06e899acba6 64 To add that driver to you application from command line, call: `mbed add https://github.com/ARMmbed/atmel-rf-driver`
Yogesh Pande 1:e06e899acba6 65
Yogesh Pande 1:e06e899acba6 66 Then you need to enable the IPV6 functionality as the 6LoWPAN and Thread are part of IPv6 stack. Edit the `mbed_app.json` file to add `IPV6` feature:
Yogesh Pande 1:e06e899acba6 67
Yogesh Pande 1:e06e899acba6 68 ```
Yogesh Pande 1:e06e899acba6 69 "target.features_add": ["CLIENT", "IPV6", "COMMON_PAL"],
Yogesh Pande 1:e06e899acba6 70 ```
Yogesh Pande 1:e06e899acba6 71
Yogesh Pande 0:7d5ec759888b 72 6LoWPAN ND and Thread use IPv6 for connectivity. Therefore, you need to verify first that you have a working IPv6 connection. To do that, ping the Connector IPv6 address `2607:f0d0:2601:52::20` from your network.
Yogesh Pande 0:7d5ec759888b 73
Yogesh Pande 0:7d5ec759888b 74 #### mbed gateway
Yogesh Pande 0:7d5ec759888b 75
Yogesh Pande 0:7d5ec759888b 76 To connect the example application in 6LoWPAN ND or Thread mode to Connector, you need to set up an mbed 6LoWPAN gateway router as follows:
Yogesh Pande 0:7d5ec759888b 77
Yogesh Pande 0:7d5ec759888b 78 1. Use an Ethernet cable to connect the mbed 6LoWPAN gateway router to the internet.
Yogesh Pande 0:7d5ec759888b 79 2. Use a micro-USB cable to connect the mbed 6LoWPAN gateway router to your computer. The computer will list the router as removable storage.
Yogesh Pande 0:7d5ec759888b 80 3. The firmware for the gateway is located in the `GW_Binary` folder in the root of this example. Select the binary matching your application bootstrap mode:
Yogesh Pande 0:7d5ec759888b 81
Yogesh Pande 0:7d5ec759888b 82 * For the **6LoWPAN ND** bootstrap, use `gateway6LoWPANDynamic.bin`.
Yogesh Pande 0:7d5ec759888b 83 * For the **Thread** bootstrap, use `gatewayThreadDynamic.bin`.
Yogesh Pande 0:7d5ec759888b 84
Yogesh Pande 0:7d5ec759888b 85 The dynamic binaries use IPv6 autoconfiguration and enable the client to connect to the Connector service. The static binaries create a site-local IPv6 network and packets cannot be routed outside.
Yogesh Pande 0:7d5ec759888b 86
Yogesh Pande 0:7d5ec759888b 87 4. Copy the gateway binary file to the mbed 6LoWPAN gateway router to flash the device. The device reboots automatically after flashing. If that does not happen, press the **Reset** button on the board.
Yogesh Pande 0:7d5ec759888b 88
Yogesh Pande 0:7d5ec759888b 89 You can view debug traces from the gateway with a serial port monitor. The gateway uses baud rate 460800. The gateway IPv6 address is correctly configured when the following trace is visible: `Eth bootstrap ready, IP=XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX`.
Yogesh Pande 0:7d5ec759888b 90
Yogesh Pande 0:7d5ec759888b 91 #### Channel settings
Yogesh Pande 0:7d5ec759888b 92
Yogesh Pande 0:7d5ec759888b 93 The default 2.4GHz channel settings are already defined by the [mbed-mesh-api](https://github.com/ARMmbed/mbed-mesh-api) to match the mbed gateway settings. The application can override these settings by adding them to the `mbed_app.json` file in the main project directory. For example:
Yogesh Pande 0:7d5ec759888b 94
Yogesh Pande 0:7d5ec759888b 95 ```json
Yogesh Pande 0:7d5ec759888b 96 "target_overrides": {
Yogesh Pande 0:7d5ec759888b 97 "*": {
Yogesh Pande 0:7d5ec759888b 98 "mbed-mesh-api.6lowpan-nd-channel-page": 0,
Yogesh Pande 0:7d5ec759888b 99 "mbed-mesh-api.6lowpan-nd-channel": 12,
Yogesh Pande 0:7d5ec759888b 100 "mbed-mesh-api.thread-config-channel-page": 0,
Yogesh Pande 0:7d5ec759888b 101 "mbed-mesh-api.thread-config-channel": 12
Yogesh Pande 0:7d5ec759888b 102 }
Yogesh Pande 0:7d5ec759888b 103 }
Yogesh Pande 0:7d5ec759888b 104 ```
Yogesh Pande 0:7d5ec759888b 105
Yogesh Pande 0:7d5ec759888b 106 For sub-GHz shields (AT86RF212B) use the following overrides, **6LoWPAN ND only**:
Yogesh Pande 0:7d5ec759888b 107
Yogesh Pande 0:7d5ec759888b 108 ```json
Yogesh Pande 0:7d5ec759888b 109 "mbed-mesh-api.6lowpan-nd-channel-page": 2,
Yogesh Pande 0:7d5ec759888b 110 "mbed-mesh-api.6lowpan-nd-channel": 1
Yogesh Pande 0:7d5ec759888b 111 ```
Yogesh Pande 0:7d5ec759888b 112
Yogesh Pande 0:7d5ec759888b 113 For more information about the radio shields, see [the related documentation](docs/radio_module_identify.md). All the configurable settings can be found in the `mbed-os-example-client/mbed-os/features/FEATURE_IPV6/mbed-mesh-api/mbed_lib.json` file.
Yogesh Pande 0:7d5ec759888b 114
Yogesh Pande 0:7d5ec759888b 115 #### Thread-specific settings
Yogesh Pande 0:7d5ec759888b 116
Yogesh Pande 0:7d5ec759888b 117 With Thread, you can change the operating mode of the client from the default router mode to a sleepy end device by adding the following override to the `mbed_app.json` file:
Yogesh Pande 0:7d5ec759888b 118
Yogesh Pande 0:7d5ec759888b 119 ```json
Yogesh Pande 0:7d5ec759888b 120 "mbed-mesh-api.thread-device-type": "MESH_DEVICE_TYPE_THREAD_SLEEPY_END_DEVICE"
Yogesh Pande 0:7d5ec759888b 121 ```
Yogesh Pande 0:7d5ec759888b 122
Yogesh Pande 0:7d5ec759888b 123 ### Ethernet settings
Yogesh Pande 0:7d5ec759888b 124
Yogesh Pande 0:7d5ec759888b 125 For running the example application using Ethernet, you need:
Yogesh Pande 0:7d5ec759888b 126
Yogesh Pande 0:7d5ec759888b 127 - An Ethernet cable.
Yogesh Pande 0:7d5ec759888b 128 - An Ethernet connection to the internet.
Yogesh Pande 0:7d5ec759888b 129
Yogesh Pande 0:7d5ec759888b 130 ### Wi-Fi settings
Yogesh Pande 0:7d5ec759888b 131
Yogesh Pande 0:7d5ec759888b 132 The example application uses ESP8266 WiFi Interface for managing the wireless connectivity. To run this application using WiFi, you need:
Yogesh Pande 0:7d5ec759888b 133
Yogesh Pande 0:7d5ec759888b 134 1. An [ESP8266](https://en.wikipedia.org/wiki/ESP8266) WiFi module
Yogesh Pande 0:7d5ec759888b 135 1. Updated [Espressif Firmware](https://developer.mbed.org/teams/ESP8266/wiki/Firmware-Update)
Yogesh Pande 0:7d5ec759888b 136 1. Mount the WiFi module onto [K64F Grove Shield v2](https://developer.mbed.org/platforms/FRDM-K64F/#supported-seeed-studio-grove-extension)
Yogesh Pande 0:7d5ec759888b 137 1. Attach the shield on the K64F board.
Yogesh Pande 0:7d5ec759888b 138 1. In the `mbed_app.json` file, change
Yogesh Pande 0:7d5ec759888b 139 ```json
Yogesh Pande 0:7d5ec759888b 140 "network-interface": {
Yogesh Pande 0:7d5ec759888b 141 "help": "options are ETHERNET,WIFI,MESH_LOWPAN_ND,MESH_THREAD.",
Yogesh Pande 0:7d5ec759888b 142 "value": "WIFI"
Yogesh Pande 0:7d5ec759888b 143 }
Yogesh Pande 0:7d5ec759888b 144 ```
Yogesh Pande 0:7d5ec759888b 145
Yogesh Pande 0:7d5ec759888b 146 Provide your WiFi SSID and password here and leave `\"` in the beginning and end of your SSID and password (as shown in the example below). Otherwise, the example cannot pick up the SSID and password in correct format.
Yogesh Pande 0:7d5ec759888b 147 ```json
Yogesh Pande 0:7d5ec759888b 148 "wifi-ssid": {
Yogesh Pande 0:7d5ec759888b 149 "help": "WiFi SSID",
Yogesh Pande 0:7d5ec759888b 150 "value": "\"SSID\""
Yogesh Pande 0:7d5ec759888b 151 },
Yogesh Pande 0:7d5ec759888b 152 "wifi-password": {
Yogesh Pande 0:7d5ec759888b 153 "help": "WiFi Password",
Yogesh Pande 0:7d5ec759888b 154 "value": "\"Password\""
Yogesh Pande 0:7d5ec759888b 155 }
Yogesh Pande 0:7d5ec759888b 156 ```
Yogesh Pande 0:7d5ec759888b 157
Yogesh Pande 0:7d5ec759888b 158 ### IP address setup
Yogesh Pande 0:7d5ec759888b 159
Yogesh Pande 0:7d5ec759888b 160 This example uses IPv4 to communicate with the [mbed Device Connector Server](https://api.connector.mbed.com) except for 6LoWPAN ND and Thread. The example program should automatically get an IPv4 address from the router when connected over Ethernet.
Yogesh Pande 0:7d5ec759888b 161
Yogesh Pande 0:7d5ec759888b 162 If your network does not have DHCP enabled, you have to manually assign a static IP address to the board. We recommend having DHCP enabled to make everything run smoothly.
Yogesh Pande 0:7d5ec759888b 163
Yogesh Pande 0:7d5ec759888b 164 ### Changing socket type
Yogesh Pande 0:7d5ec759888b 165
Yogesh Pande 0:7d5ec759888b 166 Your device can connect to mbed Device Connector via UDP or TCP binding mode. The default is UDP. The binding mode cannot be changed in 6LoWPAN ND or Thread mode.
Yogesh Pande 0:7d5ec759888b 167
Yogesh Pande 0:7d5ec759888b 168 To change the binding mode:
Yogesh Pande 0:7d5ec759888b 169
Yogesh Pande 0:7d5ec759888b 170 1. In the `simpleclient.h` file, find the parameter `SOCKET_MODE`. The default is `M2MInterface::UDP`.
Yogesh Pande 0:7d5ec759888b 171 1. To switch to TCP, change it to `M2MInterface::TCP`.
Yogesh Pande 0:7d5ec759888b 172 1. Rebuild and flash the application.
Yogesh Pande 0:7d5ec759888b 173
Yogesh Pande 0:7d5ec759888b 174 <span class="tips">**Tip:** The instructions in this document remain the same, irrespective of the socket mode you select.</span>
Yogesh Pande 0:7d5ec759888b 175
Yogesh Pande 0:7d5ec759888b 176 ## Building the example
Yogesh Pande 0:7d5ec759888b 177
Yogesh Pande 0:7d5ec759888b 178 To build the example application:
Yogesh Pande 0:7d5ec759888b 179
Yogesh Pande 0:7d5ec759888b 180 1. Clone [this](https://github.com/ARMmbed/mbed-os-example-client) repository.
Yogesh Pande 0:7d5ec759888b 181 1. Open a command line tool and navigate to the project’s directory.
Yogesh Pande 0:7d5ec759888b 182 1. Update mbed-os sources using the `mbed update` command.
Yogesh Pande 0:7d5ec759888b 183 1. [Configure](#application-setup) the client application.
Yogesh Pande 0:7d5ec759888b 184 1. Build the application by selecting the hardware board and build the toolchain using the command `mbed compile -m K64F -t GCC_ARM -c -j0`. mbed-cli builds a binary file under the project’s `.build` directory.
Yogesh Pande 0:7d5ec759888b 185 1. Plug the Ethernet cable into the board if you are using Ethernet mode.
Yogesh Pande 0:7d5ec759888b 186 1. If you are using 6LoWPAN ND or Thread mode, connect and power on the gateway first.
Yogesh Pande 0:7d5ec759888b 187 1. Plug the micro-USB cable into the **OpenSDA** port. The board is listed as a mass-storage device.
Yogesh Pande 0:7d5ec759888b 188 1. Drag the binary `.build/K64F/GCC_ARM/mbed-os-example-client.bin` to the board to flash the application.
Yogesh Pande 0:7d5ec759888b 189 1. The board is automatically programmed with the new binary. A flashing LED on it indicates that it is still working. When the LED stops blinking, the board is ready to work.
Yogesh Pande 0:7d5ec759888b 190 1. Press the **RESET** button on the board to run the program.
Yogesh Pande 0:7d5ec759888b 191 1. For verification, continue to the [Monitoring the application](#monitoring-the-application) chapter.
Yogesh Pande 0:7d5ec759888b 192
Yogesh Pande 0:7d5ec759888b 193
Yogesh Pande 0:7d5ec759888b 194 ## Monitoring the application
Yogesh Pande 0:7d5ec759888b 195
Yogesh Pande 0:7d5ec759888b 196 The application prints debug messages over the serial port, so you can monitor its activity with a serial port monitor. The application uses baud rate 115200.
Yogesh Pande 0:7d5ec759888b 197
Yogesh Pande 0:7d5ec759888b 198 <span class="notes">**Note:** Instructions to set this up are located [here](https://developer.mbed.org/handbook/SerialPC#host-interface-and-terminal-applications).</span>
Yogesh Pande 0:7d5ec759888b 199
Yogesh Pande 0:7d5ec759888b 200 After connecting, you should see messages about connecting to mbed Device Connector:
Yogesh Pande 0:7d5ec759888b 201
Yogesh Pande 0:7d5ec759888b 202 ```
Yogesh Pande 0:7d5ec759888b 203 In app_start()
Yogesh Pande 0:7d5ec759888b 204 IP address 10.2.15.222
Yogesh Pande 0:7d5ec759888b 205 Device name 6868df22-d353-4150-b90a-a878130859d9
Yogesh Pande 0:7d5ec759888b 206 ```
Yogesh Pande 0:7d5ec759888b 207
Yogesh Pande 0:7d5ec759888b 208 <span class="notes">**Note:** Device name is the endpoint name you will need later on when [testing the application](https://github.com/ARMmbed/mbed-os-example-client#testing-the-application) chapter.</span>
Yogesh Pande 0:7d5ec759888b 209
Yogesh Pande 0:7d5ec759888b 210 When you click the `SW2` button on your board you should see messages about the value changes:
Yogesh Pande 0:7d5ec759888b 211
Yogesh Pande 0:7d5ec759888b 212 ```
Yogesh Pande 0:7d5ec759888b 213 handle_button_click, new value of counter is 1
Yogesh Pande 0:7d5ec759888b 214 ```
Yogesh Pande 0:7d5ec759888b 215
Yogesh Pande 0:7d5ec759888b 216 ## Testing the application
Yogesh Pande 0:7d5ec759888b 217
Yogesh Pande 0:7d5ec759888b 218 1. Flash the application.
Yogesh Pande 0:7d5ec759888b 219 1. Verify that the registration succeeded. You should see `Registered object successfully!` printed to the serial port.
Yogesh Pande 0:7d5ec759888b 220 1. On mbed Device Connector, go to [My devices > Connected devices](https://connector.mbed.com/#endpoints). Your device should be listed here.
Yogesh Pande 0:7d5ec759888b 221 1. Press the `SW2` button on the device a number of times (make a note of how many times you did that).
Yogesh Pande 0:7d5ec759888b 222 1. Go to [Device Connector > API Console](https://connector.mbed.com/#console).
Yogesh Pande 0:7d5ec759888b 223 1. Enter `https://api.connector.mbed.com/endpoints/DEVICE_NAME/3200/0/5501` in the URI field and click **TEST API**. Replace `DEVICE_NAME` with your actual endpoint name. The device name can be found in the `security.h` file, see variable `MBED_ENDPOINT_NAME` or it can be found from the traces [Monitoring the application](https://github.com/ARMmbed/mbed-os-example-client#monitoring-the-application).
Yogesh Pande 0:7d5ec759888b 224 1. The number of times you pressed `SW2` is shown.
Yogesh Pande 0:7d5ec759888b 225 1. Press the `SW3` button to unregister from mbed Device Connector. You should see `Unregistered Object Successfully` printed to the serial port and the LED starts blinking. This will also stop your application. Press the `RESET` button to run the program again.
Yogesh Pande 0:7d5ec759888b 226
Yogesh Pande 0:7d5ec759888b 227
Yogesh Pande 0:7d5ec759888b 228 ![SW2 pressed five times, as shown by the API Console](clicks.png)
Yogesh Pande 0:7d5ec759888b 229
Yogesh Pande 0:7d5ec759888b 230 <span class="tips">**Tip:** If you get an error, for example `Server Response: 410 (Gone)`, clear your browser's cache, log out, and log back in.</span>
Yogesh Pande 0:7d5ec759888b 231
Yogesh Pande 0:7d5ec759888b 232 <span class="notes">**Note:** Only GET methods can be executed through [Device Connector > API Console](https://connector.mbed.com/#console). For other methods check the [mbed Device Connector Quick Start](https://github.com/ARMmbed/mbed-connector-api-node-quickstart).
Yogesh Pande 0:7d5ec759888b 233
Yogesh Pande 0:7d5ec759888b 234 ### Application resources
Yogesh Pande 0:7d5ec759888b 235
Yogesh Pande 0:7d5ec759888b 236 The application exposes three [resources](https://docs.mbed.com/docs/mbed-device-connector-web-interfaces/en/latest/#the-mbed-device-connector-data-model):
Yogesh Pande 0:7d5ec759888b 237
Yogesh Pande 0:7d5ec759888b 238 1. `3200/0/5501`. Number of presses of SW2 (GET).
Yogesh Pande 0:7d5ec759888b 239 2. `3201/0/5850`. Blink function, blinks `LED1` when executed (POST).
Yogesh Pande 0:7d5ec759888b 240 3. `3201/0/5853`. Blink pattern, used by the blink function to determine how to blink. In the format of `1000:500:1000:500:1000:500` (PUT).
Yogesh Pande 0:7d5ec759888b 241
Yogesh Pande 0:7d5ec759888b 242 For information on how to get notifications when resource 1 changes, or how to use resources 2 and 3, take a look at the [mbed Device Connector Quick Start](https://github.com/ARMmbed/mbed-connector-api-node-quickstart).
Yogesh Pande 0:7d5ec759888b 243