Qasim Zia / Mbed OS pelion-example-common

pelion-example-common

Dependencies:   ublox-at-cellular-interface ublox-cellular-base

main.cpp@1:a50c1e691ff1, 2018-12-11 (annotated)

Committer:
screamer
Date:
Tue Dec 11 00:39:31 2018 +0000
Revision:
1:a50c1e691ff1
Parent:
0:a076a1bbe630
Child:
3:3b2db67b206e
Hide sensors under ENABLE_SENSORS macro until the underlying ST target reiceves ADC temp and vref pin descriptions

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:a076a1bbe630 1 // ----------------------------------------------------------------------------
screamer 0:a076a1bbe630 2 // Copyright 2016-2018 ARM Ltd.
screamer 0:a076a1bbe630 3 //
screamer 0:a076a1bbe630 4 // SPDX-License-Identifier: Apache-2.0
screamer 0:a076a1bbe630 5 //
screamer 0:a076a1bbe630 6 // Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:a076a1bbe630 7 // you may not use this file except in compliance with the License.
screamer 0:a076a1bbe630 8 // You may obtain a copy of the License at
screamer 0:a076a1bbe630 9 //
screamer 0:a076a1bbe630 10 // http://www.apache.org/licenses/LICENSE-2.0
screamer 0:a076a1bbe630 11 //
screamer 0:a076a1bbe630 12 // Unless required by applicable law or agreed to in writing, software
screamer 0:a076a1bbe630 13 // distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:a076a1bbe630 14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:a076a1bbe630 15 // See the License for the specific language governing permissions and
screamer 0:a076a1bbe630 16 // limitations under the License.
screamer 0:a076a1bbe630 17 // ----------------------------------------------------------------------------
screamer 0:a076a1bbe630 18 #ifndef MBED_TEST_MODE
screamer 0:a076a1bbe630 19
screamer 0:a076a1bbe630 20 #include "mbed.h"
screamer 0:a076a1bbe630 21 #include "simple-mbed-cloud-client.h"
screamer 0:a076a1bbe630 22 #include "FATFileSystem.h"
screamer 0:a076a1bbe630 23 #include "LittleFileSystem.h"
screamer 0:a076a1bbe630 24
screamer 0:a076a1bbe630 25 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
screamer 0:a076a1bbe630 26 // 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 0:a076a1bbe630 27 EventQueue eventQueue;
screamer 0:a076a1bbe630 28
screamer 0:a076a1bbe630 29 // Default network interface object
screamer 0:a076a1bbe630 30 NetworkInterface *net = NetworkInterface::get_default_instance();
screamer 0:a076a1bbe630 31
screamer 0:a076a1bbe630 32 // Default block device
screamer 0:a076a1bbe630 33 BlockDevice *bd = BlockDevice::get_default_instance();
screamer 0:a076a1bbe630 34 SlicingBlockDevice sd(bd, 0, 2*1024*1024);
screamer 0:a076a1bbe630 35 LittleFileSystem fs("fs", &sd);
screamer 0:a076a1bbe630 36
screamer 0:a076a1bbe630 37 // Default User button for GET example
screamer 1:a50c1e691ff1 38 InterruptIn button(BUTTON1);
screamer 0:a076a1bbe630 39 // Default LED to use for PUT/POST example
screamer 0:a076a1bbe630 40 DigitalOut led(LED1);
screamer 1:a50c1e691ff1 41
screamer 1:a50c1e691ff1 42 #ifdef ENABLE_SENSORS
screamer 0:a076a1bbe630 43 // Default temperature reading from microcontroller
screamer 0:a076a1bbe630 44 AnalogIn adc_temp(ADC_TEMP);
screamer 0:a076a1bbe630 45 // Voltage reference from microcontroller
screamer 0:a076a1bbe630 46 AnalogIn adc_vref(ADC_VREF);
screamer 0:a076a1bbe630 47
screamer 0:a076a1bbe630 48 #define SENSORS_POLL_INTERVAL 1.0
screamer 1:a50c1e691ff1 49 #endif /* ENABLE_SENSORS */
screamer 0:a076a1bbe630 50
screamer 0:a076a1bbe630 51 // Declaring pointers for access to Pelion Client resources outside of main()
screamer 0:a076a1bbe630 52 MbedCloudClientResource *res_button;
screamer 0:a076a1bbe630 53 MbedCloudClientResource *res_led;
screamer 1:a50c1e691ff1 54 #ifdef ENABLE_SENSORS
screamer 0:a076a1bbe630 55 MbedCloudClientResource *res_temperature;
screamer 0:a076a1bbe630 56 MbedCloudClientResource *res_voltage;
screamer 1:a50c1e691ff1 57 #endif /* ENABLE_SENSORS */
screamer 0:a076a1bbe630 58
screamer 0:a076a1bbe630 59 // When the device is registered, this variable will be used to access various useful information, like device ID etc.
screamer 0:a076a1bbe630 60 static const ConnectorClientEndpointInfo* endpointInfo;
screamer 0:a076a1bbe630 61
screamer 0:a076a1bbe630 62 /**
screamer 0:a076a1bbe630 63 * PUT handler
screamer 0:a076a1bbe630 64 * @param resource The resource that triggered the callback
screamer 0:a076a1bbe630 65 * @param newValue Updated value for the resource
screamer 0:a076a1bbe630 66 */
screamer 0:a076a1bbe630 67 void led_put_callback(MbedCloudClientResource *resource, m2m::String newValue) {
screamer 0:a076a1bbe630 68 printf("PUT received, new value: %s\n", newValue.c_str());
screamer 0:a076a1bbe630 69 led = atoi(newValue.c_str());
screamer 0:a076a1bbe630 70 }
screamer 0:a076a1bbe630 71
screamer 0:a076a1bbe630 72 /**
screamer 0:a076a1bbe630 73 * POST handler
screamer 0:a076a1bbe630 74 * @param resource The resource that triggered the callback
screamer 0:a076a1bbe630 75 * @param buffer If a body was passed to the POST function, this contains the data.
screamer 0:a076a1bbe630 76 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
screamer 0:a076a1bbe630 77 * @param size Size of the body
screamer 0:a076a1bbe630 78 */
screamer 0:a076a1bbe630 79 void led_post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
screamer 0:a076a1bbe630 80 printf("POST received. Going to blink LED pattern: %s\n", res_led->get_value().c_str());
screamer 0:a076a1bbe630 81 led = atoi(res_led->get_value().c_str());
screamer 0:a076a1bbe630 82 }
screamer 0:a076a1bbe630 83
screamer 0:a076a1bbe630 84 /**
screamer 0:a076a1bbe630 85 * Button function triggered by the physical button press.
screamer 0:a076a1bbe630 86 */
screamer 0:a076a1bbe630 87 void button_press() {
screamer 0:a076a1bbe630 88 int v = res_button->get_value_int() + 1;
screamer 0:a076a1bbe630 89 res_button->set_value(v);
screamer 0:a076a1bbe630 90 printf("Button clicked %d times\n", v);
screamer 0:a076a1bbe630 91 }
screamer 0:a076a1bbe630 92
screamer 0:a076a1bbe630 93 /**
screamer 0:a076a1bbe630 94 * Notification callback handler
screamer 0:a076a1bbe630 95 * @param resource The resource that triggered the callback
screamer 0:a076a1bbe630 96 * @param status The delivery status of the notification
screamer 0:a076a1bbe630 97 */
screamer 0:a076a1bbe630 98 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
screamer 0:a076a1bbe630 99 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
screamer 0:a076a1bbe630 100 }
screamer 0:a076a1bbe630 101
screamer 0:a076a1bbe630 102 /**
screamer 0:a076a1bbe630 103 * Registration callback handler
screamer 0:a076a1bbe630 104 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
screamer 0:a076a1bbe630 105 */
screamer 0:a076a1bbe630 106 void registered(const ConnectorClientEndpointInfo *endpoint) {
screamer 0:a076a1bbe630 107 printf("Connected to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
screamer 0:a076a1bbe630 108 endpointInfo = endpoint;
screamer 0:a076a1bbe630 109 }
screamer 0:a076a1bbe630 110
screamer 0:a076a1bbe630 111 /**
screamer 0:a076a1bbe630 112 * Update sensors and report their values.
screamer 0:a076a1bbe630 113 * This function is called periodically.
screamer 0:a076a1bbe630 114 */
screamer 1:a50c1e691ff1 115 #ifdef ENABLE_SENSORS
screamer 0:a076a1bbe630 116 void sensors_update() {
screamer 0:a076a1bbe630 117 float temp = adc_temp.read()*100;
screamer 0:a076a1bbe630 118 float vref = adc_vref.read();
screamer 0:a076a1bbe630 119 printf("ADC temp: %6.4f C, vref: %6.4f %%\r\n", temp, vref);
screamer 0:a076a1bbe630 120 if (endpointInfo) {
screamer 0:a076a1bbe630 121 res_temperature->set_value(temp);
screamer 0:a076a1bbe630 122 res_voltage->set_value(vref);
screamer 0:a076a1bbe630 123 }
screamer 0:a076a1bbe630 124 }
screamer 1:a50c1e691ff1 125 #endif /* ENABLE_SENSORS */
screamer 0:a076a1bbe630 126
screamer 0:a076a1bbe630 127
screamer 0:a076a1bbe630 128 int main(void) {
screamer 0:a076a1bbe630 129 printf("Starting Simple Pelion Device Management Client example\n");
screamer 0:a076a1bbe630 130
screamer 0:a076a1bbe630 131 // If the User button is pressed ons start, then format storage.
screamer 0:a076a1bbe630 132 const int PRESSED = 1;
screamer 1:a50c1e691ff1 133 DigitalIn *user_button = new DigitalIn(BUTTON1);
screamer 0:a076a1bbe630 134 if (user_button->read() == PRESSED) {
screamer 0:a076a1bbe630 135 printf("User button is pushed on start. Formatting the storage...\n");
screamer 0:a076a1bbe630 136 int storage_status = fs.reformat(&sd);
screamer 0:a076a1bbe630 137 if (storage_status != 0) {
screamer 0:a076a1bbe630 138 if (sd.erase(0, sd.size()) == 0) {
screamer 0:a076a1bbe630 139 if (fs.format(&sd) == 0) {
screamer 0:a076a1bbe630 140 storage_status = 0;
screamer 0:a076a1bbe630 141 printf("The storage reformatted successfully.\n");
screamer 0:a076a1bbe630 142 }
screamer 0:a076a1bbe630 143 }
screamer 0:a076a1bbe630 144 }
screamer 0:a076a1bbe630 145 if (storage_status != 0) {
screamer 0:a076a1bbe630 146 printf("ERROR: Failed to reformat the storage (%d).\n", storage_status);
screamer 0:a076a1bbe630 147 }
screamer 0:a076a1bbe630 148 }
screamer 0:a076a1bbe630 149
screamer 0:a076a1bbe630 150 // Connect to the internet (DHCP is expected to be on)
screamer 0:a076a1bbe630 151 printf("Connecting to the network using Wifi...\n");
screamer 0:a076a1bbe630 152 net = NetworkInterface::get_default_instance();
screamer 0:a076a1bbe630 153
screamer 0:a076a1bbe630 154 nsapi_error_t net_status = -1;
screamer 0:a076a1bbe630 155 for (int tries = 0; tries < 3; tries++) {
screamer 0:a076a1bbe630 156 net_status = net->connect();
screamer 0:a076a1bbe630 157 if (net_status == NSAPI_ERROR_OK) {
screamer 0:a076a1bbe630 158 break;
screamer 0:a076a1bbe630 159 } else {
screamer 0:a076a1bbe630 160 printf("Unable to connect to network. Retrying...\n");
screamer 0:a076a1bbe630 161 }
screamer 0:a076a1bbe630 162 }
screamer 0:a076a1bbe630 163
screamer 0:a076a1bbe630 164 if (net_status != NSAPI_ERROR_OK) {
screamer 0:a076a1bbe630 165 printf("ERROR: Connecting to the network failed (%d)!\n", net_status);
screamer 0:a076a1bbe630 166 return -1;
screamer 0:a076a1bbe630 167 }
screamer 0:a076a1bbe630 168
screamer 0:a076a1bbe630 169 printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address());
screamer 0:a076a1bbe630 170
screamer 0:a076a1bbe630 171 // SimpleMbedCloudClient handles registering over LwM2M to Pelion DM
screamer 0:a076a1bbe630 172 SimpleMbedCloudClient client(net, bd, &fs);
screamer 0:a076a1bbe630 173 int client_status = client.init();
screamer 0:a076a1bbe630 174 if (client_status != 0) {
screamer 0:a076a1bbe630 175 printf("ERROR: Pelion Client initialization failed (%d)\n", client_status);
screamer 0:a076a1bbe630 176 return -1;
screamer 0:a076a1bbe630 177 }
screamer 0:a076a1bbe630 178
screamer 0:a076a1bbe630 179 // Creating resources, which can be written or read from the cloud
screamer 0:a076a1bbe630 180 res_button = client.create_resource("3200/0/5501", "button_count");
screamer 0:a076a1bbe630 181 res_button->set_value(0);
screamer 0:a076a1bbe630 182 res_button->methods(M2MMethod::GET);
screamer 0:a076a1bbe630 183 res_button->observable(true);
screamer 0:a076a1bbe630 184 res_button->attach_notification_callback(button_callback);
screamer 0:a076a1bbe630 185
screamer 0:a076a1bbe630 186 res_led = client.create_resource("3201/0/5853", "led_state");
screamer 0:a076a1bbe630 187 res_led->set_value(1);
screamer 0:a076a1bbe630 188 res_led->methods(M2MMethod::GET | M2MMethod::PUT);
screamer 0:a076a1bbe630 189 res_led->attach_put_callback(led_put_callback);
screamer 0:a076a1bbe630 190
screamer 1:a50c1e691ff1 191 #ifdef ENABLE_SENSORS
screamer 0:a076a1bbe630 192 // Sensor resources
screamer 0:a076a1bbe630 193 res_temperature = client.create_resource("3303/0/5700", "temperature");
screamer 0:a076a1bbe630 194 res_temperature->set_value(0);
screamer 0:a076a1bbe630 195 res_temperature->methods(M2MMethod::GET);
screamer 0:a076a1bbe630 196 res_temperature->observable(true);
screamer 0:a076a1bbe630 197
screamer 0:a076a1bbe630 198 res_voltage = client.create_resource("3316/0/5700", "voltage");
screamer 0:a076a1bbe630 199 res_voltage->set_value(0);
screamer 0:a076a1bbe630 200 res_voltage->methods(M2MMethod::GET);
screamer 0:a076a1bbe630 201 res_voltage->observable(true);
screamer 1:a50c1e691ff1 202 #endif /* ENABLE_SENSORS */
screamer 0:a076a1bbe630 203
screamer 0:a076a1bbe630 204 printf("Initialized Pelion Client. Registering...\n");
screamer 0:a076a1bbe630 205
screamer 0:a076a1bbe630 206 // Callback that fires when registering is complete
screamer 0:a076a1bbe630 207 client.on_registered(&registered);
screamer 0:a076a1bbe630 208
screamer 0:a076a1bbe630 209 // Register with Pelion DM
screamer 0:a076a1bbe630 210 client.register_and_connect();
screamer 0:a076a1bbe630 211
screamer 0:a076a1bbe630 212 int i = 600; // wait 60 seconds
screamer 0:a076a1bbe630 213 while (i-- > 0 && !client.is_client_registered()) {
screamer 0:a076a1bbe630 214 wait_ms(100);
screamer 0:a076a1bbe630 215 }
screamer 0:a076a1bbe630 216
screamer 0:a076a1bbe630 217 button.fall(eventQueue.event(&button_press));
screamer 0:a076a1bbe630 218
screamer 1:a50c1e691ff1 219 #ifdef ENABLE_SENSORS
screamer 0:a076a1bbe630 220 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
screamer 0:a076a1bbe630 221 Ticker timer;
screamer 0:a076a1bbe630 222 timer.attach(eventQueue.event(&sensors_update), SENSORS_POLL_INTERVAL);
screamer 1:a50c1e691ff1 223 #endif /* ENABLE_SENSORS */
screamer 0:a076a1bbe630 224
screamer 0:a076a1bbe630 225 // You can easily run the eventQueue in a separate thread if required
screamer 0:a076a1bbe630 226 eventQueue.dispatch_forever();
screamer 0:a076a1bbe630 227 }
screamer 0:a076a1bbe630 228 #endif