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

pelion-example-common-DISCO_F413ZH

main.cpp@23:64f3f756acf6, 2019-03-21 (annotated)

Committer:
screamer
Date:
Thu Mar 21 22:03:46 2019 +0000
Revision:
23:64f3f756acf6
Parent:
19:7e760f65ed78
Child:
25:d8a84856bd96
Update target support for DISCO_L475VG_IOT01A

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
screamer 13:433fcff306ad 25 // 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 26 NetworkInterface *net = NetworkInterface::get_default_instance();
screamer 0:ea30ba97a865 27
screamer 7:24d524c2bdcc 28 // Default block device available on the target board
screamer 1:37392c1b4cf8 29 BlockDevice *bd = BlockDevice::get_default_instance();
screamer 7:24d524c2bdcc 30
screamer 7:24d524c2bdcc 31 #if COMPONENT_SD || COMPONENT_NUSD
screamer 7:24d524c2bdcc 32 // Use FATFileSystem for SD card type blockdevices
screamer 23:64f3f756acf6 33 FATFileSystem fs("fs");
screamer 7:24d524c2bdcc 34 #else
screamer 7:24d524c2bdcc 35 // Use LittleFileSystem for non-SD block devices to enable wear leveling and other functions
screamer 23:64f3f756acf6 36 LittleFileSystem fs("fs");
screamer 7:24d524c2bdcc 37 #endif
screamer 0:ea30ba97a865 38
screamer 1:37392c1b4cf8 39 // Default User button for GET example
screamer 4:05845431da95 40 InterruptIn button(BUTTON1);
screamer 1:37392c1b4cf8 41 // Default LED to use for PUT/POST example
screamer 1:37392c1b4cf8 42 DigitalOut led(LED1);
screamer 7:24d524c2bdcc 43 // Temperature reading from microcontroller
screamer 1:37392c1b4cf8 44 AnalogIn adc_temp(ADC_TEMP);
screamer 7:24d524c2bdcc 45 // Voltage reference reading from microcontroller
screamer 1:37392c1b4cf8 46 AnalogIn adc_vref(ADC_VREF);
screamer 0:ea30ba97a865 47
screamer 1:37392c1b4cf8 48 #define SENSORS_POLL_INTERVAL 1.0
screamer 0:ea30ba97a865 49
screamer 19:7e760f65ed78 50 // Declaring pointers for access to Pelion Device Management Client resources outside of main()
screamer 19:7e760f65ed78 51 MbedCloudClientResource *button_res;
screamer 19:7e760f65ed78 52 MbedCloudClientResource *led_res;
screamer 19:7e760f65ed78 53 MbedCloudClientResource *post_res;
screamer 1:37392c1b4cf8 54
screamer 19:7e760f65ed78 55 MbedCloudClientResource *temp_res;
screamer 19:7e760f65ed78 56 MbedCloudClientResource *volt_res;
screamer 19:7e760f65ed78 57
screamer 19:7e760f65ed78 58
screamer 19:7e760f65ed78 59 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
screamer 19:7e760f65ed78 60 // 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 61 EventQueue eventQueue;
screamer 0:ea30ba97a865 62
screamer 0:ea30ba97a865 63 /**
screamer 19:7e760f65ed78 64 * PUT handler - sets the value of the built-in LED
screamer 0:ea30ba97a865 65 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 66 * @param newValue Updated value for the resource
screamer 0:ea30ba97a865 67 */
screamer 19:7e760f65ed78 68 void put_callback(MbedCloudClientResource *resource, m2m::String newValue) {
screamer 11:0bddeb20bafc 69 printf("PUT received. New value: %s\n", newValue.c_str());
screamer 1:37392c1b4cf8 70 led = atoi(newValue.c_str());
screamer 0:ea30ba97a865 71 }
screamer 0:ea30ba97a865 72
screamer 0:ea30ba97a865 73 /**
screamer 19:7e760f65ed78 74 * POST handler - prints the content of the payload
screamer 0:ea30ba97a865 75 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 76 * @param buffer If a body was passed to the POST function, this contains the data.
screamer 0:ea30ba97a865 77 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
screamer 0:ea30ba97a865 78 * @param size Size of the body
screamer 0:ea30ba97a865 79 */
screamer 19:7e760f65ed78 80 void post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
screamer 19:7e760f65ed78 81 printf("POST received (length %u). Payload: ", size);
screamer 19:7e760f65ed78 82 for (size_t ix = 0; ix < size; ix++) {
screamer 19:7e760f65ed78 83 printf("%02x ", buffer[ix]);
screamer 19:7e760f65ed78 84 }
screamer 19:7e760f65ed78 85 printf("\n");
screamer 1:37392c1b4cf8 86 }
screamer 0:ea30ba97a865 87
screamer 1:37392c1b4cf8 88 /**
screamer 19:7e760f65ed78 89 * Button handler
screamer 19:7e760f65ed78 90 * This function will be triggered either by a physical button press or by a ticker every 5 seconds (see below)
screamer 1:37392c1b4cf8 91 */
screamer 1:37392c1b4cf8 92 void button_press() {
screamer 19:7e760f65ed78 93 int v = button_res->get_value_int() + 1;
screamer 19:7e760f65ed78 94 button_res->set_value(v);
screamer 1:37392c1b4cf8 95 printf("Button clicked %d times\n", v);
screamer 0:ea30ba97a865 96 }
screamer 0:ea30ba97a865 97
screamer 0:ea30ba97a865 98 /**
screamer 0:ea30ba97a865 99 * Notification callback handler
screamer 0:ea30ba97a865 100 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 101 * @param status The delivery status of the notification
screamer 0:ea30ba97a865 102 */
screamer 0:ea30ba97a865 103 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
screamer 0:ea30ba97a865 104 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
screamer 0:ea30ba97a865 105 }
screamer 0:ea30ba97a865 106
screamer 0:ea30ba97a865 107 /**
screamer 0:ea30ba97a865 108 * Registration callback handler
screamer 0:ea30ba97a865 109 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
screamer 19:7e760f65ed78 110 * When the device is registered, this variable will be used to access various useful information, like device ID etc.
screamer 0:ea30ba97a865 111 */
screamer 19:7e760f65ed78 112
screamer 19:7e760f65ed78 113 static const ConnectorClientEndpointInfo* endpointInfo;
screamer 0:ea30ba97a865 114 void registered(const ConnectorClientEndpointInfo *endpoint) {
screamer 7:24d524c2bdcc 115 printf("Registered to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
screamer 1:37392c1b4cf8 116 endpointInfo = endpoint;
screamer 0:ea30ba97a865 117 }
screamer 0:ea30ba97a865 118
screamer 1:37392c1b4cf8 119 /**
screamer 1:37392c1b4cf8 120 * Update sensors and report their values.
screamer 1:37392c1b4cf8 121 * This function is called periodically.
screamer 1:37392c1b4cf8 122 */
screamer 1:37392c1b4cf8 123 void sensors_update() {
screamer 1:37392c1b4cf8 124 float temp = adc_temp.read()*100;
screamer 1:37392c1b4cf8 125 float vref = adc_vref.read();
screamer 1:37392c1b4cf8 126 printf("ADC temp: %6.4f C, vref: %6.4f %%\r\n", temp, vref);
screamer 1:37392c1b4cf8 127 if (endpointInfo) {
screamer 19:7e760f65ed78 128 temp_res->set_value(temp);
screamer 19:7e760f65ed78 129 volt_res->set_value(vref);
screamer 1:37392c1b4cf8 130 }
screamer 1:37392c1b4cf8 131 }
screamer 1:37392c1b4cf8 132
screamer 1:37392c1b4cf8 133
screamer 0:ea30ba97a865 134 int main(void) {
screamer 8:579904ba4ba1 135 printf("\nStarting Simple Pelion Device Management Client example\n");
screamer 1:37392c1b4cf8 136
screamer 23:64f3f756acf6 137 int storage_status = fs.mount(bd);
screamer 23:64f3f756acf6 138 if (storage_status != 0) {
screamer 23:64f3f756acf6 139 printf("Storage mounting failed.\n");
screamer 23:64f3f756acf6 140 }
screamer 23:64f3f756acf6 141
screamer 23:64f3f756acf6 142 #if USE_BUTTON == 1
screamer 1:37392c1b4cf8 143 // If the User button is pressed ons start, then format storage.
screamer 23:64f3f756acf6 144 bool btn_pressed = (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE);
screamer 23:64f3f756acf6 145 if (btn_pressed) {
screamer 23:64f3f756acf6 146 printf("User button is pushed on start...\n");
screamer 23:64f3f756acf6 147 }
screamer 23:64f3f756acf6 148 #else
screamer 23:64f3f756acf6 149 bool btn_pressed = FALSE;
screamer 23:64f3f756acf6 150 #endif /* USE_BUTTON */
screamer 23:64f3f756acf6 151
screamer 23:64f3f756acf6 152 if (storage_status || btn_pressed) {
screamer 23:64f3f756acf6 153 printf("Formatting the storage...\n");
screamer 23:64f3f756acf6 154 int storage_status = StorageHelper::format(&fs, bd);
screamer 1:37392c1b4cf8 155 if (storage_status != 0) {
screamer 23:64f3f756acf6 156 printf("ERROR: Failed to reformat the storage (%d).\n", storage_status);
screamer 1:37392c1b4cf8 157 }
screamer 8:579904ba4ba1 158 } else {
screamer 8:579904ba4ba1 159 printf("You can hold the user button during boot to format the storage and change the device identity.\n");
screamer 1:37392c1b4cf8 160 }
screamer 0:ea30ba97a865 161
screamer 19:7e760f65ed78 162 // Connect to the Internet (DHCP is expected to be on)
screamer 10:f3ec71d2ec83 163 printf("Connecting to the network using the default network interface...\n");
screamer 1:37392c1b4cf8 164 net = NetworkInterface::get_default_instance();
screamer 0:ea30ba97a865 165
screamer 19:7e760f65ed78 166 nsapi_error_t net_status = NSAPI_ERROR_NO_CONNECTION;
screamer 19:7e760f65ed78 167 while ((net_status = net->connect()) != NSAPI_ERROR_OK) {
screamer 19:7e760f65ed78 168 printf("Unable to connect to network (%d). Retrying...\n", net_status);
screamer 0:ea30ba97a865 169 }
screamer 0:ea30ba97a865 170
screamer 0:ea30ba97a865 171 printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address());
screamer 0:ea30ba97a865 172
screamer 8:579904ba4ba1 173 printf("Initializing Pelion Device Management Client...\n");
screamer 7:24d524c2bdcc 174
screamer 19:7e760f65ed78 175 // SimpleMbedCloudClient handles registering over LwM2M to Pelion Device Management
screamer 0:ea30ba97a865 176 SimpleMbedCloudClient client(net, bd, &fs);
screamer 0:ea30ba97a865 177 int client_status = client.init();
screamer 0:ea30ba97a865 178 if (client_status != 0) {
screamer 19:7e760f65ed78 179 printf("Pelion Client initialization failed (%d)\n", client_status);
screamer 0:ea30ba97a865 180 return -1;
screamer 0:ea30ba97a865 181 }
screamer 0:ea30ba97a865 182
screamer 0:ea30ba97a865 183 // Creating resources, which can be written or read from the cloud
screamer 19:7e760f65ed78 184 button_res = client.create_resource("3200/0/5501", "button_count");
screamer 19:7e760f65ed78 185 button_res->set_value(0);
screamer 19:7e760f65ed78 186 button_res->methods(M2MMethod::GET);
screamer 19:7e760f65ed78 187 button_res->observable(true);
screamer 19:7e760f65ed78 188 button_res->attach_notification_callback(button_callback);
screamer 1:37392c1b4cf8 189
screamer 19:7e760f65ed78 190 led_res = client.create_resource("3201/0/5853", "led_state");
screamer 19:7e760f65ed78 191 led_res->set_value(led.read());
screamer 19:7e760f65ed78 192 led_res->methods(M2MMethod::GET | M2MMethod::PUT);
screamer 19:7e760f65ed78 193 led_res->attach_put_callback(put_callback);
screamer 19:7e760f65ed78 194
screamer 19:7e760f65ed78 195 post_res = client.create_resource("3300/0/5605", "execute_function");
screamer 19:7e760f65ed78 196 post_res->methods(M2MMethod::POST);
screamer 19:7e760f65ed78 197 post_res->attach_post_callback(post_callback);
screamer 0:ea30ba97a865 198
screamer 1:37392c1b4cf8 199 // Sensor resources
screamer 19:7e760f65ed78 200 temp_res = client.create_resource("3303/0/5700", "temperature");
screamer 19:7e760f65ed78 201 temp_res->set_value(0);
screamer 19:7e760f65ed78 202 temp_res->methods(M2MMethod::GET);
screamer 19:7e760f65ed78 203 temp_res->observable(true);
screamer 0:ea30ba97a865 204
screamer 19:7e760f65ed78 205 volt_res = client.create_resource("3316/0/5700", "voltage");
screamer 19:7e760f65ed78 206 volt_res->set_value(0);
screamer 19:7e760f65ed78 207 volt_res->methods(M2MMethod::GET);
screamer 19:7e760f65ed78 208 volt_res->observable(true);
screamer 0:ea30ba97a865 209
screamer 11:0bddeb20bafc 210 printf("Initialized Pelion Device Management Client. Registering...\n");
screamer 0:ea30ba97a865 211
screamer 0:ea30ba97a865 212 // Callback that fires when registering is complete
screamer 0:ea30ba97a865 213 client.on_registered(&registered);
screamer 0:ea30ba97a865 214
screamer 1:37392c1b4cf8 215 // Register with Pelion DM
screamer 0:ea30ba97a865 216 client.register_and_connect();
screamer 0:ea30ba97a865 217
screamer 19:7e760f65ed78 218 // The button fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
screamer 1:37392c1b4cf8 219 button.fall(eventQueue.event(&button_press));
screamer 14:1ac188d5404d 220 printf("Press the user button to increment the LwM2M resource value...\n");
screamer 1:37392c1b4cf8 221
screamer 0:ea30ba97a865 222 Ticker timer;
screamer 1:37392c1b4cf8 223 timer.attach(eventQueue.event(&sensors_update), SENSORS_POLL_INTERVAL);
screamer 0:ea30ba97a865 224
screamer 0:ea30ba97a865 225 // You can easily run the eventQueue in a separate thread if required
screamer 0:ea30ba97a865 226 eventQueue.dispatch_forever();
screamer 0:ea30ba97a865 227 }
screamer 19:7e760f65ed78 228
screamer 19:7e760f65ed78 229 #endif /* MBED_TEST_MODE */