Mbed OS example of Pelion device management client

This example is known to work great on the following platforms:

https://os.mbed.com/media/cache/platforms/M46B_mbed.png.250x250_q85.jpg

To use this example, connect ESP8266 Wi-Fi module (Grove UART WiFi) to the AdBun-M46B board as below:

ESP8266 Wi-FiAdBun-M46B
TXPL1 (CN4-22)
RXPL2 (CN4-24)
VINVCC3.3 (CN11-5)
GNDGND (CN11-6)

https://dl.dropboxusercontent.com/s/5j4glkwhjg5m5ay/IMG_7457.jpg

Example functionality

  • Initialize, connect and register to Pelion DM
  • Interact with the user through the serial port (115200 bauds)
    • Press enter through putty/minicom to simulate button
    • Press i to print endpoint name
    • Press Ctrl-C to to unregister
    • Press r to reset storage and reboot (warning: it generates a new device ID!)

Instructions to use this program with Mbed CLI


1. Import the application into your desktop:

mbed import https://os.mbed.com/teams/Toshiba/code/mbed-os-example-pelion/
cd mbed-os-example-pelion


2. Install the CLOUD_SDK_API_KEY

mbed config -G CLOUD_SDK_API_KEY <PELION_DM_API_KEY>

For instructions on how to generate your API key, please see the documentation.

3. Initialize firmware credentials (done once per repository). You can use the following command:

mbed dm init -d "<your company name in Pelion DM>" --model-name "<product model identifier>" -q --force

If above command do not work for your Mbed CLI, please consider upgrading Mbed CLI to version 1.8.x or above.

4. Connect Pins used with Wifi shield (ESP8266) and SD card shield:

5. Edit mbed_app.json to specify Wi-Fi access point information

            "nsapi.default-wifi-ssid"                   : "\"SSID\"",
            "nsapi.default-wifi-password"               : "\"PASSWORD\""

6. Compile and program:

mbed compile -t <toolchain> -m TMPM46B

(supported toolchains : GCC_ARM / ARM / IAR)

Revision:
0:9f917a7bf2da
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TESTS/observation.py	Thu Dec 12 10:26:06 2019 +0900
@@ -0,0 +1,110 @@
+"""
+Copyright 2019 ARM Limited
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+
+# pylint: disable=missing-docstring,useless-super-delegation
+# pylint: disable=line-too-long,method-hidden,relative-import
+
+import time
+from icetea_lib.bench import TestStepFail
+from mbed_cloud.exceptions import CloudApiException
+from pelion_helper import PelionBase
+
+
+class Testcase(PelionBase):
+    def __init__(self):
+        PelionBase.__init__(self,
+                            name="observation",
+                            title="Example application can respond to resource subscription)",
+                            status="released",
+                            type="acceptance",
+                            component=["mbed_cloud_client_example"])
+
+    def setup(self):
+        super(Testcase, self).setup()
+
+    def case(self):
+        # Test resource subscription
+        resource_path = '/3201/0/5853'
+
+        # 1) Add initial resource value
+        self.logger.info("PUT %s with value %s", resource_path, self.pattern_value1)
+        try:
+            self.connect_api.set_resource_value(device_id=self.device_id,
+                                                resource_path=resource_path,
+                                                resource_value=self.pattern_value1,
+                                                timeout=self.restTimeout)
+        except CloudApiException as error:
+            raise TestStepFail("PUT request failed with %d and msg %s" % (error.status, error.message))
+
+        # Create resource subscription for custom resource (/3201/0/5853)
+        self.logger.info("Testing subscription for %s", resource_path)
+        self.connect_api.start_notifications()
+
+        try:
+            self.connect_api.add_resource_subscription_async(device_id=self.device_id,
+                                                             resource_path=resource_path,
+                                                             callback_fn=self._callback_fn)
+        except CloudApiException as error:
+            raise TestStepFail("Subscription request failed with %d and msg %s" % (error.status, error.message))
+
+        # 2) Update resource value
+        self.logger.info("PUT %s with value %s", resource_path, self.pattern_value2)
+        try:
+            self.connect_api.set_resource_value(device_id=self.device_id,
+                                                resource_path=resource_path,
+                                                resource_value=self.pattern_value2,
+                                                timeout=self.restTimeout)
+        except CloudApiException as error:
+            raise TestStepFail("PUT request failed with %d and msg %s" % (error.status, error.message))
+
+        self.logger.info("Waiting for resource notification")
+        notif_timeout = time.time() + self.restTimeout
+
+        # 3) Wait until we receive some value or timeout
+        while time.time() < notif_timeout:
+            if self.notified_value != "":
+                break
+
+        if self.notified_value != self.pattern_value2:
+            self.logger.error("Web-application received %s as notification, expected %s", self.notified_value, self.pattern_value2)
+            raise TestStepFail("Incorrect/No notification received")
+        else:
+            self.logger.info("Web-application received %s as notification.", self.notified_value)
+
+        # 4) Remove subscription
+        try:
+            self.connect_api.delete_resource_subscription(device_id=self.device_id)
+        except CloudApiException as error:
+            raise TestStepFail("Subscription removal failed with %d and msg %s" % (error.status, error.message))
+
+        # 5) Update resource value to trigger reset from server
+        # This is needed to clean the client subscription status for any follow-up tests
+        self.logger.info("PUT %s with value %s", resource_path, self.pattern_value3)
+        try:
+            self.connect_api.set_resource_value(device_id=self.device_id,
+                                                resource_path=resource_path,
+                                                resource_value=self.pattern_value3,
+                                                timeout=self.restTimeout)
+        except CloudApiException as error:
+            raise TestStepFail("PUT request failed with %d and msg %s" % (error.status, error.message))
+
+    def teardown(self):
+        # Remove subscription
+        try:
+            self.connect_api.delete_resource_subscription(device_id=self.device_id)
+        except CloudApiException as error:
+            raise TestStepFail("Subscription removal failed with %d and msg %s" % (error.status, error.message))
+
+        self.connect_api.stop_notifications()