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example-DISCO_L475_IOT-mbed-Cloud-connect
Superseded by https://os.mbed.com/teams/ST/code/pelion-example-disco-iot01/
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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 #include "mbed.h" 00020 #include "simple-mbed-cloud-client.h" 00021 #include "FATFileSystem.h" 00022 00023 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads) 00024 // 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 00025 EventQueue eventQueue; 00026 00027 // Default network interface object 00028 NetworkInterface *net; 00029 00030 // Default block device 00031 BlockDevice* bd = BlockDevice::get_default_instance(); 00032 FATFileSystem fs("sd", bd); 00033 00034 // Declaring pointers for access to Pelion Client resources outside of main() 00035 MbedCloudClientResource *button_res; 00036 MbedCloudClientResource *pattern_res; 00037 00038 // This function gets triggered by the timer. It's easy to replace it by an InterruptIn and fall() mode on a real button 00039 void fake_button_press() { 00040 int v = button_res->get_value_int() + 1; 00041 00042 button_res->set_value(v); 00043 00044 printf("Simulated button clicked %d times\n", v); 00045 } 00046 00047 /** 00048 * PUT handler 00049 * @param resource The resource that triggered the callback 00050 * @param newValue Updated value for the resource 00051 */ 00052 void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) { 00053 printf("PUT received, new value: %s\n", newValue.c_str()); 00054 } 00055 00056 /** 00057 * POST handler 00058 * @param resource The resource that triggered the callback 00059 * @param buffer If a body was passed to the POST function, this contains the data. 00060 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer. 00061 * @param size Size of the body 00062 */ 00063 void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) { 00064 printf("POST received. Going to blink LED pattern: %s\n", pattern_res->get_value().c_str()); 00065 00066 static DigitalOut augmentedLed(LED1); // LED that is used for blinking the pattern 00067 00068 // Parse the pattern string, and toggle the LED in that pattern 00069 string s = std::string(pattern_res->get_value().c_str()); 00070 size_t i = 0; 00071 size_t pos = s.find(':'); 00072 while (pos != string::npos) { 00073 wait_ms(atoi(s.substr(i, pos - i).c_str())); 00074 augmentedLed = !augmentedLed; 00075 00076 i = ++pos; 00077 pos = s.find(':', pos); 00078 00079 if (pos == string::npos) { 00080 wait_ms(atoi(s.substr(i, s.length()).c_str())); 00081 augmentedLed = !augmentedLed; 00082 } 00083 } 00084 } 00085 00086 /** 00087 * Notification callback handler 00088 * @param resource The resource that triggered the callback 00089 * @param status The delivery status of the notification 00090 */ 00091 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) { 00092 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status); 00093 } 00094 00095 /** 00096 * Registration callback handler 00097 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal) 00098 */ 00099 void registered(const ConnectorClientEndpointInfo *endpoint) { 00100 printf("Connected to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str()); 00101 } 00102 00103 int main(void) { 00104 printf("Starting Simple Pelion Device Management Client example\n"); 00105 printf("Connecting to the network using Wifi...\n"); 00106 00107 // Connect to the internet (DHCP is expected to be on) 00108 net = NetworkInterface::get_default_instance(); 00109 00110 nsapi_error_t status = net->connect(); 00111 00112 if (status != NSAPI_ERROR_OK) { 00113 printf("Connecting to the network failed %d!\n", status); 00114 return -1; 00115 } 00116 00117 printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address()); 00118 00119 // SimpleMbedCloudClient handles registering over LwM2M to Pelion DM 00120 SimpleMbedCloudClient client(net, bd, &fs); 00121 int client_status = client.init(); 00122 if (client_status != 0) { 00123 printf("Pelion Client initialization failed (%d)\n", client_status); 00124 return -1; 00125 } 00126 00127 // Creating resources, which can be written or read from the cloud 00128 button_res = client.create_resource("3200/0/5501", "button_count"); 00129 button_res->set_value(0); 00130 button_res->methods(M2MMethod::GET); 00131 button_res->observable(true); 00132 button_res->attach_notification_callback(button_callback); 00133 00134 pattern_res = client.create_resource("3201/0/5853", "blink_pattern"); 00135 pattern_res->set_value("500:500:500:500:500:500:500:500"); 00136 pattern_res->methods(M2MMethod::GET | M2MMethod::PUT); 00137 pattern_res->attach_put_callback(pattern_updated); 00138 00139 MbedCloudClientResource *blink_res = client.create_resource("3201/0/5850", "blink_action"); 00140 blink_res->methods(M2MMethod::POST); 00141 blink_res->attach_post_callback(blink_callback); 00142 00143 printf("Initialized Pelion Client. Registering...\n"); 00144 00145 // Callback that fires when registering is complete 00146 client.on_registered(®istered); 00147 00148 // Register with Pelion DM 00149 client.register_and_connect(); 00150 00151 // Placeholder for callback to update local resource when GET comes. 00152 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations 00153 Ticker timer; 00154 timer.attach(eventQueue.event(&fake_button_press), 5.0); 00155 00156 // You can easily run the eventQueue in a separate thread if required 00157 eventQueue.dispatch_forever(); 00158 } 00159 #endif
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