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NuMaker-mbed-cloud-example-Ethernet
Simple Mbed Cloud client application for NuMaker-PFM-M487 and NuMaker-PFM-NUC472 over Ethernet.
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main.cpp
00001 // ---------------------------------------------------------------------------- 00002 // Copyright 2016-2018 ARM Ltd. 00003 // 00004 // SPDX-License-Identifier: Apache-2.0 00005 // 00006 // Licensed under the Apache License, Version 2.0 (the "License"); 00007 // you may not use this file except in compliance with the License. 00008 // You may obtain a copy of the License at 00009 // 00010 // http://www.apache.org/licenses/LICENSE-2.0 00011 // 00012 // Unless required by applicable law or agreed to in writing, software 00013 // distributed under the License is distributed on an "AS IS" BASIS, 00014 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00015 // See the License for the specific language governing permissions and 00016 // limitations under the License. 00017 // ---------------------------------------------------------------------------- 00018 #ifndef MBED_TEST_MODE 00019 00020 #include "mbed.h" 00021 #include "simple-mbed-cloud-client.h" 00022 #include "FATFileSystem.h" 00023 00024 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads) 00025 // 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 00026 EventQueue eventQueue; 00027 00028 // Default block device 00029 BlockDevice *bd = BlockDevice::get_default_instance(); 00030 FATFileSystem fs("fs"); 00031 00032 // Default network interface object 00033 NetworkInterface *net = NetworkInterface::get_default_instance(); 00034 00035 // Declaring pointers for access to Pelion Device Management Client resources outside of main() 00036 MbedCloudClientResource *button_res; 00037 MbedCloudClientResource *pattern_res; 00038 00039 // This function gets triggered by the timer. It's easy to replace it by an InterruptIn and fall() mode on a real button 00040 void fake_button_press() { 00041 int v = button_res->get_value_int() + 1; 00042 00043 button_res->set_value(v); 00044 00045 printf("Simulated button clicked %d times\n", v); 00046 } 00047 00048 /** 00049 * PUT handler 00050 * @param resource The resource that triggered the callback 00051 * @param newValue Updated value for the resource 00052 */ 00053 void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) { 00054 printf("PUT received, new value: %s\n", newValue.c_str()); 00055 } 00056 00057 /** 00058 * POST handler 00059 * @param resource The resource that triggered the callback 00060 * @param buffer If a body was passed to the POST function, this contains the data. 00061 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer. 00062 * @param size Size of the body 00063 */ 00064 void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) { 00065 printf("POST received. Going to blink LED pattern: %s\n", pattern_res->get_value().c_str()); 00066 00067 static DigitalOut augmentedLed(LED1); // LED that is used for blinking the pattern 00068 00069 // Parse the pattern string, and toggle the LED in that pattern 00070 string s = std::string(pattern_res->get_value().c_str()); 00071 size_t i = 0; 00072 size_t pos = s.find(':'); 00073 while (pos != string::npos) { 00074 wait_ms(atoi(s.substr(i, pos - i).c_str())); 00075 augmentedLed = !augmentedLed; 00076 00077 i = ++pos; 00078 pos = s.find(':', pos); 00079 00080 if (pos == string::npos) { 00081 wait_ms(atoi(s.substr(i, s.length()).c_str())); 00082 augmentedLed = !augmentedLed; 00083 } 00084 } 00085 } 00086 00087 /** 00088 * Notification callback handler 00089 * @param resource The resource that triggered the callback 00090 * @param status The delivery status of the notification 00091 */ 00092 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) { 00093 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status); 00094 } 00095 00096 /** 00097 * Registration callback handler 00098 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal) 00099 */ 00100 void registered(const ConnectorClientEndpointInfo *endpoint) { 00101 printf("Connected to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str()); 00102 } 00103 00104 int main(void) { 00105 printf("Starting Simple Pelion Device Management Client example\n"); 00106 printf("Connecting to the network...\n"); 00107 00108 // Connect to the internet (DHCP is expected to be on) 00109 nsapi_error_t status = net->connect(); 00110 00111 if (status != NSAPI_ERROR_OK) { 00112 printf("Connecting to the network failed %d!\n", status); 00113 return -1; 00114 } 00115 00116 printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address()); 00117 00118 // SimpleMbedCloudClient handles registering over LwM2M to Pelion Device Management 00119 SimpleMbedCloudClient client(net, bd, &fs); 00120 int client_status = client.init(); 00121 if (client_status != 0) { 00122 printf("Pelion Client initialization failed (%d)\n", client_status); 00123 return -1; 00124 } 00125 00126 // Creating resources, which can be written or read from the cloud 00127 button_res = client.create_resource("3200/0/5501", "button_count"); 00128 button_res->set_value(0); 00129 button_res->methods(M2MMethod::GET); 00130 button_res->observable(true); 00131 button_res->attach_notification_callback(button_callback); 00132 00133 pattern_res = client.create_resource("3201/0/5853", "blink_pattern"); 00134 pattern_res->set_value("500:500:500:500:500:500:500:500"); 00135 pattern_res->methods(M2MMethod::GET | M2MMethod::PUT); 00136 pattern_res->attach_put_callback(pattern_updated); 00137 00138 MbedCloudClientResource *blink_res = client.create_resource("3201/0/5850", "blink_action"); 00139 blink_res->methods(M2MMethod::POST); 00140 blink_res->attach_post_callback(blink_callback); 00141 00142 printf("Initialized Pelion Client. Registering...\n"); 00143 00144 // Callback that fires when registering is complete 00145 client.on_registered(®istered); 00146 00147 // Register with Pelion Device Management 00148 client.register_and_connect(); 00149 00150 // Placeholder for callback to update local resource when GET comes. 00151 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations 00152 Ticker timer; 00153 timer.attach(eventQueue.event(&fake_button_press), 5.0); 00154 00155 // You can easily run the eventQueue in a separate thread if required 00156 eventQueue.dispatch_forever(); 00157 } 00158 #endif
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