Christos Vasilakis / Mbed OS pelion-example-common-DISCO_F413ZH

pelion-example-common-DISCO_F413ZH

main.cpp@28:f3b254af78b2, 2020-01-27 (annotated)

Committer:
cvasilak
Date:
Mon Jan 27 16:29:54 2020 +0000
Revision:
28:f3b254af78b2
Parent:
27:8b5b0fc59d47 
blinking pattern refactoring

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:ea30ba97a865 1 // ----------------------------------------------------------------------------
screamer 0:ea30ba97a865 2 // Copyright 2016-2018 ARM Ltd.
screamer 0:ea30ba97a865 3 //
screamer 0:ea30ba97a865 4 // SPDX-License-Identifier: Apache-2.0
screamer 0:ea30ba97a865 5 //
screamer 0:ea30ba97a865 6 // Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:ea30ba97a865 7 // you may not use this file except in compliance with the License.
screamer 0:ea30ba97a865 8 // You may obtain a copy of the License at
screamer 0:ea30ba97a865 9 //
screamer 0:ea30ba97a865 10 // http://www.apache.org/licenses/LICENSE-2.0
screamer 0:ea30ba97a865 11 //
screamer 0:ea30ba97a865 12 // Unless required by applicable law or agreed to in writing, software
screamer 0:ea30ba97a865 13 // distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:ea30ba97a865 14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:ea30ba97a865 15 // See the License for the specific language governing permissions and
screamer 0:ea30ba97a865 16 // limitations under the License.
screamer 0:ea30ba97a865 17 // ----------------------------------------------------------------------------
screamer 0:ea30ba97a865 18 #ifndef MBED_TEST_MODE
screamer 0:ea30ba97a865 19
screamer 0:ea30ba97a865 20 #include "mbed.h"
screamer 0:ea30ba97a865 21 #include "simple-mbed-cloud-client.h"
screamer 0:ea30ba97a865 22 #include "FATFileSystem.h"
screamer 1:37392c1b4cf8 23 #include "LittleFileSystem.h"
screamer 0:ea30ba97a865 24
cvasilak 28:f3b254af78b2 25 #include <string>
cvasilak 28:f3b254af78b2 26
screamer 13:433fcff306ad 27 // Default network interface object. Don't forget to change the WiFi SSID/password in mbed_app.json if you're using WiFi.
screamer 0:ea30ba97a865 28 NetworkInterface *net = NetworkInterface::get_default_instance();
screamer 0:ea30ba97a865 29
screamer 7:24d524c2bdcc 30 // Default block device available on the target board
screamer 1:37392c1b4cf8 31 BlockDevice *bd = BlockDevice::get_default_instance();
screamer 7:24d524c2bdcc 32
screamer 7:24d524c2bdcc 33 #if COMPONENT_SD || COMPONENT_NUSD
screamer 7:24d524c2bdcc 34 // Use FATFileSystem for SD card type blockdevices
screamer 23:64f3f756acf6 35 FATFileSystem fs("fs");
screamer 7:24d524c2bdcc 36 #else
screamer 7:24d524c2bdcc 37 // Use LittleFileSystem for non-SD block devices to enable wear leveling and other functions
screamer 23:64f3f756acf6 38 LittleFileSystem fs("fs");
screamer 7:24d524c2bdcc 39 #endif
screamer 0:ea30ba97a865 40
screamer 1:37392c1b4cf8 41 // Default User button for GET example
screamer 4:05845431da95 42 InterruptIn button(BUTTON1);
screamer 1:37392c1b4cf8 43 // Default LED to use for PUT/POST example
screamer 25:d8a84856bd96 44 DigitalOut led(LED1, 0);
screamer 25:d8a84856bd96 45
screamer 25:d8a84856bd96 46 // How often to fetch sensor data (in seconds)
screamer 25:d8a84856bd96 47 #define SENSORS_POLL_INTERVAL 3.0
screamer 25:d8a84856bd96 48
screamer 25:d8a84856bd96 49 // Send all sensor data or just limited (useful for when running out of memory)
screamer 25:d8a84856bd96 50 #define SEND_ALL_SENSORS
screamer 25:d8a84856bd96 51
screamer 25:d8a84856bd96 52 // Sensors related includes and initialization
screamer 7:24d524c2bdcc 53 // Temperature reading from microcontroller
screamer 1:37392c1b4cf8 54 AnalogIn adc_temp(ADC_TEMP);
screamer 7:24d524c2bdcc 55 // Voltage reference reading from microcontroller
screamer 1:37392c1b4cf8 56 AnalogIn adc_vref(ADC_VREF);
screamer 0:ea30ba97a865 57
screamer 25:d8a84856bd96 58 // Declaring pointers for access to Pelion Device Management Client resources outside of main()
screamer 25:d8a84856bd96 59 MbedCloudClientResource *res_button;
cvasilak 28:f3b254af78b2 60 MbedCloudClientResource *res_pattern_led;
screamer 25:d8a84856bd96 61 MbedCloudClientResource *res_post;
screamer 0:ea30ba97a865 62
screamer 25:d8a84856bd96 63 // Additional resources for sensor readings
screamer 25:d8a84856bd96 64 #ifdef SEND_ALL_SENSORS
screamer 25:d8a84856bd96 65 MbedCloudClientResource *res_temperature;
screamer 25:d8a84856bd96 66 MbedCloudClientResource *res_voltage;
screamer 25:d8a84856bd96 67 #endif /* SEND_ALL_SENSORS */
screamer 19:7e760f65ed78 68
screamer 19:7e760f65ed78 69 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
screamer 19:7e760f65ed78 70 // 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
screamer 19:7e760f65ed78 71 EventQueue eventQueue;
screamer 0:ea30ba97a865 72
screamer 25:d8a84856bd96 73 // When the device is registered, this variable will be used to access various useful information, like device ID etc.
screamer 25:d8a84856bd96 74 static const ConnectorClientEndpointInfo* endpointInfo;
screamer 25:d8a84856bd96 75
cvasilak 28:f3b254af78b2 76 void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) {
cvasilak 28:f3b254af78b2 77 printf("PUT received, new value: %s\n", newValue.c_str());
cvasilak 28:f3b254af78b2 78 }
cvasilak 28:f3b254af78b2 79
cvasilak 28:f3b254af78b2 80 void blink() {
cvasilak 28:f3b254af78b2 81 led = !led;
screamer 0:ea30ba97a865 82 }
screamer 0:ea30ba97a865 83
screamer 0:ea30ba97a865 84 /**
cvasilak 28:f3b254af78b2 85 * POST handler
screamer 0:ea30ba97a865 86 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 87 * @param buffer If a body was passed to the POST function, this contains the data.
screamer 0:ea30ba97a865 88 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
screamer 0:ea30ba97a865 89 * @param size Size of the body
screamer 0:ea30ba97a865 90 */
cvasilak 28:f3b254af78b2 91 void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
cvasilak 28:f3b254af78b2 92 printf("POST received. Going to blink LED pattern: %s\n", res_pattern_led->get_value().c_str());
screamer 0:ea30ba97a865 93
cvasilak 28:f3b254af78b2 94 // Parse the pattern string, and toggle the LED in that pattern
cvasilak 28:f3b254af78b2 95 string s = string(res_pattern_led->get_value().c_str());
cvasilak 28:f3b254af78b2 96 size_t i = 0;
cvasilak 28:f3b254af78b2 97 size_t pos = s.find(':');
cvasilak 28:f3b254af78b2 98 int total_len = 0;
cvasilak 28:f3b254af78b2 99 while (pos != string::npos) {
cvasilak 28:f3b254af78b2 100 int len = atoi(s.substr(i, pos - i).c_str());
cvasilak 28:f3b254af78b2 101
cvasilak 28:f3b254af78b2 102 mbed_event_queue()->call_in(total_len + len, &blink);
cvasilak 28:f3b254af78b2 103
cvasilak 28:f3b254af78b2 104 total_len += len;
cvasilak 28:f3b254af78b2 105 i = ++pos;
cvasilak 28:f3b254af78b2 106 pos = s.find(':', pos);
cvasilak 28:f3b254af78b2 107 }
screamer 0:ea30ba97a865 108 }
screamer 0:ea30ba97a865 109
screamer 0:ea30ba97a865 110 /**
screamer 0:ea30ba97a865 111 * Notification callback handler
screamer 0:ea30ba97a865 112 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 113 * @param status The delivery status of the notification
screamer 0:ea30ba97a865 114 */
screamer 0:ea30ba97a865 115 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
screamer 0:ea30ba97a865 116 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
screamer 0:ea30ba97a865 117 }
screamer 0:ea30ba97a865 118
screamer 0:ea30ba97a865 119 /**
cvasilak 28:f3b254af78b2 120 * Button handler
cvasilak 28:f3b254af78b2 121 * This function will be triggered either by a physical button press or by a ticker every 5 seconds (see below)
screamer 0:ea30ba97a865 122 */
cvasilak 28:f3b254af78b2 123 void button_press() {
cvasilak 28:f3b254af78b2 124 int v = res_button->get_value_int() + 1;
cvasilak 28:f3b254af78b2 125 res_button->set_value(v);
cvasilak 28:f3b254af78b2 126 printf("Button clicked %d times\n", v);
screamer 0:ea30ba97a865 127 }
screamer 0:ea30ba97a865 128
screamer 1:37392c1b4cf8 129 /**
screamer 1:37392c1b4cf8 130 * Update sensors and report their values.
screamer 1:37392c1b4cf8 131 * This function is called periodically.
screamer 1:37392c1b4cf8 132 */
screamer 1:37392c1b4cf8 133 void sensors_update() {
screamer 1:37392c1b4cf8 134 float temp = adc_temp.read()*100;
screamer 1:37392c1b4cf8 135 float vref = adc_vref.read();
screamer 1:37392c1b4cf8 136 printf("ADC temp: %6.4f C, vref: %6.4f %%\r\n", temp, vref);
screamer 1:37392c1b4cf8 137 if (endpointInfo) {
screamer 25:d8a84856bd96 138 res_temperature->set_value(temp);
screamer 25:d8a84856bd96 139 res_voltage->set_value(vref);
screamer 1:37392c1b4cf8 140 }
screamer 1:37392c1b4cf8 141 }
screamer 1:37392c1b4cf8 142
cvasilak 28:f3b254af78b2 143 /**
cvasilak 28:f3b254af78b2 144 * Registration callback handler
cvasilak 28:f3b254af78b2 145 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
cvasilak 28:f3b254af78b2 146 * When the device is registered, this variable will be used to access various useful information, like device ID etc.
cvasilak 28:f3b254af78b2 147 */
cvasilak 28:f3b254af78b2 148 void registered(const ConnectorClientEndpointInfo *endpoint) {
cvasilak 28:f3b254af78b2 149 printf("Registered to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
cvasilak 28:f3b254af78b2 150 endpointInfo = endpoint;
cvasilak 28:f3b254af78b2 151 }
screamer 1:37392c1b4cf8 152
screamer 0:ea30ba97a865 153 int main(void) {
screamer 8:579904ba4ba1 154 printf("\nStarting Simple Pelion Device Management Client example\n");
screamer 1:37392c1b4cf8 155
screamer 23:64f3f756acf6 156 int storage_status = fs.mount(bd);
screamer 23:64f3f756acf6 157 if (storage_status != 0) {
screamer 23:64f3f756acf6 158 printf("Storage mounting failed.\n");
screamer 23:64f3f756acf6 159 }
screamer 1:37392c1b4cf8 160 // If the User button is pressed ons start, then format storage.
screamer 23:64f3f756acf6 161 bool btn_pressed = (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE);
screamer 23:64f3f756acf6 162 if (btn_pressed) {
screamer 23:64f3f756acf6 163 printf("User button is pushed on start...\n");
screamer 23:64f3f756acf6 164 }
screamer 23:64f3f756acf6 165
screamer 23:64f3f756acf6 166 if (storage_status || btn_pressed) {
screamer 23:64f3f756acf6 167 printf("Formatting the storage...\n");
screamer 23:64f3f756acf6 168 int storage_status = StorageHelper::format(&fs, bd);
screamer 1:37392c1b4cf8 169 if (storage_status != 0) {
screamer 23:64f3f756acf6 170 printf("ERROR: Failed to reformat the storage (%d).\n", storage_status);
screamer 1:37392c1b4cf8 171 }
screamer 8:579904ba4ba1 172 } else {
screamer 8:579904ba4ba1 173 printf("You can hold the user button during boot to format the storage and change the device identity.\n");
screamer 1:37392c1b4cf8 174 }
screamer 0:ea30ba97a865 175
screamer 19:7e760f65ed78 176 // Connect to the Internet (DHCP is expected to be on)
screamer 10:f3ec71d2ec83 177 printf("Connecting to the network using the default network interface...\n");
screamer 1:37392c1b4cf8 178 net = NetworkInterface::get_default_instance();
screamer 0:ea30ba97a865 179
screamer 19:7e760f65ed78 180 nsapi_error_t net_status = NSAPI_ERROR_NO_CONNECTION;
screamer 19:7e760f65ed78 181 while ((net_status = net->connect()) != NSAPI_ERROR_OK) {
screamer 19:7e760f65ed78 182 printf("Unable to connect to network (%d). Retrying...\n", net_status);
screamer 0:ea30ba97a865 183 }
screamer 0:ea30ba97a865 184
screamer 0:ea30ba97a865 185 printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address());
screamer 0:ea30ba97a865 186
screamer 8:579904ba4ba1 187 printf("Initializing Pelion Device Management Client...\n");
screamer 7:24d524c2bdcc 188
screamer 19:7e760f65ed78 189 // SimpleMbedCloudClient handles registering over LwM2M to Pelion Device Management
screamer 0:ea30ba97a865 190 SimpleMbedCloudClient client(net, bd, &fs);
screamer 0:ea30ba97a865 191 int client_status = client.init();
screamer 0:ea30ba97a865 192 if (client_status != 0) {
screamer 19:7e760f65ed78 193 printf("Pelion Client initialization failed (%d)\n", client_status);
screamer 0:ea30ba97a865 194 return -1;
screamer 0:ea30ba97a865 195 }
screamer 0:ea30ba97a865 196
screamer 0:ea30ba97a865 197 // Creating resources, which can be written or read from the cloud
screamer 25:d8a84856bd96 198 res_button = client.create_resource("3200/0/5501", "Button Count");
screamer 25:d8a84856bd96 199 res_button->set_value(0);
screamer 25:d8a84856bd96 200 res_button->methods(M2MMethod::GET);
screamer 25:d8a84856bd96 201 res_button->observable(true);
screamer 25:d8a84856bd96 202 res_button->attach_notification_callback(button_callback);
screamer 1:37392c1b4cf8 203
cvasilak 28:f3b254af78b2 204 res_pattern_led = client.create_resource("3201/0/5853", "LED Pattern");
cvasilak 28:f3b254af78b2 205 //res_pattern_led->set_value("500:500:500:500:500:500:500:500");
cvasilak 28:f3b254af78b2 206 res_pattern_led->set_value("100:100:100:100:100:100:100:100");
cvasilak 28:f3b254af78b2 207 res_pattern_led->methods(M2MMethod::GET | M2MMethod::PUT);
cvasilak 28:f3b254af78b2 208 res_pattern_led->attach_put_callback(pattern_updated);
screamer 19:7e760f65ed78 209
cvasilak 28:f3b254af78b2 210 res_post = client.create_resource("3201/0/5850", "Blink Action");
screamer 25:d8a84856bd96 211 res_post->methods(M2MMethod::POST);
cvasilak 28:f3b254af78b2 212 res_post->attach_post_callback(eventQueue.event(&blink_callback));
screamer 0:ea30ba97a865 213
screamer 1:37392c1b4cf8 214 // Sensor resources
screamer 25:d8a84856bd96 215 res_temperature = client.create_resource("3303/0/5700", "Temperature (C)");
screamer 25:d8a84856bd96 216 res_temperature->set_value(0);
screamer 25:d8a84856bd96 217 res_temperature->methods(M2MMethod::GET);
screamer 25:d8a84856bd96 218 res_temperature->observable(true);
screamer 0:ea30ba97a865 219
screamer 25:d8a84856bd96 220 res_voltage = client.create_resource("3316/0/5700", "Voltage");
screamer 25:d8a84856bd96 221 res_voltage->set_value(0);
screamer 25:d8a84856bd96 222 res_voltage->methods(M2MMethod::GET);
screamer 25:d8a84856bd96 223 res_voltage->observable(true);
screamer 0:ea30ba97a865 224
screamer 11:0bddeb20bafc 225 printf("Initialized Pelion Device Management Client. Registering...\n");
screamer 0:ea30ba97a865 226
screamer 0:ea30ba97a865 227 // Callback that fires when registering is complete
screamer 0:ea30ba97a865 228 client.on_registered(&registered);
screamer 0:ea30ba97a865 229
screamer 1:37392c1b4cf8 230 // Register with Pelion DM
screamer 0:ea30ba97a865 231 client.register_and_connect();
screamer 0:ea30ba97a865 232
screamer 19:7e760f65ed78 233 // The button fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
screamer 1:37392c1b4cf8 234 button.fall(eventQueue.event(&button_press));
screamer 14:1ac188d5404d 235 printf("Press the user button to increment the LwM2M resource value...\n");
screamer 1:37392c1b4cf8 236
cvasilak 28:f3b254af78b2 237 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
screamer 0:ea30ba97a865 238 Ticker timer;
screamer 1:37392c1b4cf8 239 timer.attach(eventQueue.event(&sensors_update), SENSORS_POLL_INTERVAL);
screamer 0:ea30ba97a865 240
screamer 0:ea30ba97a865 241 // You can easily run the eventQueue in a separate thread if required
screamer 0:ea30ba97a865 242 eventQueue.dispatch_forever();
screamer 0:ea30ba97a865 243 }
screamer 19:7e760f65ed78 244
screamer 19:7e760f65ed78 245 #endif /* MBED_TEST_MODE */