leo hendrickson
/
example-Ethernet-mbed-Cloud-connect
,,
main.cpp
- Committer:
- leothedragon
- Date:
- 2021-05-04
- Revision:
- 0:8f0bb79ddd48
File content as of revision 0:8f0bb79ddd48:
// ---------------------------------------------------------------------------- // Copyright 2016-2018 ARM Ltd. // // SPDX-License-Identifier: Apache-2.0 // // 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. // ---------------------------------------------------------------------------- #ifndef MBED_TEST_MODE #include "mbed.h" #include "simple-mbed-cloud-client.h" #include "FATFileSystem.h" #include "LittleFileSystem.h" // Default network interface object. Don't forget to change the WiFi SSID/password in mbed_app.json if you're using WiFi. NetworkInterface *net = NetworkInterface::get_default_instance(); // Default block device available on the target board BlockDevice *bd = BlockDevice::get_default_instance(); #if COMPONENT_SD || COMPONENT_NUSD // Use FATFileSystem for SD card type blockdevices FATFileSystem fs("fs"); #else // Use LittleFileSystem for non-SD block devices to enable wear leveling and other functions LittleFileSystem fs("fs"); #endif // Default User button for GET example InterruptIn button(BUTTON1); // Default LED to use for PUT/POST example DigitalOut led(LED1, 0); // How often to fetch sensor data (in seconds) #define SENSORS_POLL_INTERVAL 3.0 // Send all sensor data or just limited (useful for when running out of memory) #define SEND_ALL_SENSORS // Sensors related includes and initialization // Temperature reading from microcontroller AnalogIn adc_temp(ADC_TEMP); // Voltage reference reading from microcontroller AnalogIn adc_vref(ADC_VREF); // Declaring pointers for access to Pelion Device Management Client resources outside of main() MbedCloudClientResource *res_button; MbedCloudClientResource *res_led; MbedCloudClientResource *res_post; // Additional resources for sensor readings #ifdef SEND_ALL_SENSORS MbedCloudClientResource *res_temperature; MbedCloudClientResource *res_voltage; #endif /* SEND_ALL_SENSORS */ // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads) // This is great because things such as network operations are illegal in ISR, so updating a resource in a button's fall() function is not allowed EventQueue eventQueue; // When the device is registered, this variable will be used to access various useful information, like device ID etc. static const ConnectorClientEndpointInfo* endpointInfo; /** * PUT handler - sets the value of the built-in LED * @param resource The resource that triggered the callback * @param newValue Updated value for the resource */ void put_callback(MbedCloudClientResource *resource, m2m::String newValue) { printf("PUT received. New value: %s\n", newValue.c_str()); led = atoi(newValue.c_str()); } /** * POST handler - prints the content of the payload * @param resource The resource that triggered the callback * @param buffer If a body was passed to the POST function, this contains the data. * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer. * @param size Size of the body */ void post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) { printf("POST received (length %u). Payload: ", size); for (size_t ix = 0; ix < size; ix++) { printf("%02x ", buffer[ix]); } printf("\n"); } /** * Button handler * This function will be triggered either by a physical button press or by a ticker every 5 seconds (see below) */ void button_press() { int v = res_button->get_value_int() + 1; res_button->set_value(v); printf("Button clicked %d times\n", v); } /** * Notification callback handler * @param resource The resource that triggered the callback * @param status The delivery status of the notification */ void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) { printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status); } /** * Registration callback handler * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal) * When the device is registered, this variable will be used to access various useful information, like device ID etc. */ void registered(const ConnectorClientEndpointInfo *endpoint) { printf("Registered to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str()); endpointInfo = endpoint; } /** * Update sensors and report their values. * This function is called periodically. */ void sensors_update() { float temp = adc_temp.read()*100; float vref = adc_vref.read(); printf("ADC temp: %6.4f C, vref: %6.4f %%\r\n", temp, vref); if (endpointInfo) { res_temperature->set_value(temp); res_voltage->set_value(vref); } } int main(void) { printf("\nStarting Simple Pelion Device Management Client example\n"); int storage_status = fs.mount(bd); if (storage_status != 0) { printf("Storage mounting failed.\n"); } // If the User button is pressed ons start, then format storage. bool btn_pressed = (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE); if (btn_pressed) { printf("User button is pushed on start...\n"); } if (storage_status || btn_pressed) { printf("Formatting the storage...\n"); int storage_status = StorageHelper::format(&fs, bd); if (storage_status != 0) { printf("ERROR: Failed to reformat the storage (%d).\n", storage_status); } } else { printf("You can hold the user button during boot to format the storage and change the device identity.\n"); } // Connect to the Internet (DHCP is expected to be on) printf("Connecting to the network using the default network interface...\n"); net = NetworkInterface::get_default_instance(); nsapi_error_t net_status = NSAPI_ERROR_NO_CONNECTION; while ((net_status = net->connect()) != NSAPI_ERROR_OK) { printf("Unable to connect to network (%d). Retrying...\n", net_status); } printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address()); printf("Initializing Pelion Device Management Client...\n"); // SimpleMbedCloudClient handles registering over LwM2M to Pelion Device Management SimpleMbedCloudClient client(net, bd, &fs); int client_status = client.init(); if (client_status != 0) { printf("Pelion Client initialization failed (%d)\n", client_status); return -1; } // Creating resources, which can be written or read from the cloud res_button = client.create_resource("3200/0/5501", "Button Count"); res_button->set_value(0); res_button->methods(M2MMethod::GET); res_button->observable(true); res_button->attach_notification_callback(button_callback); res_led = client.create_resource("3201/0/5853", "LED State"); res_led->set_value(led.read()); res_led->methods(M2MMethod::GET | M2MMethod::PUT); res_led->attach_put_callback(put_callback); res_post = client.create_resource("3300/0/5605", "Execute Function"); res_post->methods(M2MMethod::POST); res_post->attach_post_callback(post_callback); // Sensor resources res_temperature = client.create_resource("3303/0/5700", "Temperature (C)"); res_temperature->set_value(0); res_temperature->methods(M2MMethod::GET); res_temperature->observable(true); res_voltage = client.create_resource("3316/0/5700", "Voltage"); res_voltage->set_value(0); res_voltage->methods(M2MMethod::GET); res_voltage->observable(true); printf("Initialized Pelion Device Management Client. Registering...\n"); // Callback that fires when registering is complete client.on_registered(®istered); // Register with Pelion DM client.register_and_connect(); // The button fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations button.fall(eventQueue.event(&button_press)); printf("Press the user button to increment the LwM2M resource value...\n"); Ticker timer; timer.attach(eventQueue.event(&sensors_update), SENSORS_POLL_INTERVAL); // You can easily run the eventQueue in a separate thread if required eventQueue.dispatch_forever(); } #endif /* MBED_TEST_MODE */