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

pelion-example-common-DISCO_F413ZH

main.cpp@1:37392c1b4cf8, 2018-12-10 (annotated)

Committer:
screamer
Date:
Mon Dec 10 20:49:49 2018 +0000
Revision:
1:37392c1b4cf8
Parent:
0:ea30ba97a865
Child:
4:05845431da95
Use ADC temp and vref as sensors across all ST based boards

Who changed what in which revision?

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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 0:ea30ba97a865 25 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
screamer 0:ea30ba97a865 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:ea30ba97a865 27 EventQueue eventQueue;
screamer 0:ea30ba97a865 28
screamer 0:ea30ba97a865 29 // Default network interface object
screamer 0:ea30ba97a865 30 NetworkInterface *net = NetworkInterface::get_default_instance();
screamer 0:ea30ba97a865 31
screamer 1:37392c1b4cf8 32 // Default block device
screamer 1:37392c1b4cf8 33 BlockDevice *bd = BlockDevice::get_default_instance();
screamer 1:37392c1b4cf8 34 SlicingBlockDevice sd(bd, 0, 2*1024*1024);
screamer 1:37392c1b4cf8 35 LittleFileSystem fs("fs", &sd);
screamer 0:ea30ba97a865 36
screamer 1:37392c1b4cf8 37 // Default User button for GET example
screamer 1:37392c1b4cf8 38 InterruptIn button(USER_BUTTON);
screamer 1:37392c1b4cf8 39 // Default LED to use for PUT/POST example
screamer 1:37392c1b4cf8 40 DigitalOut led(LED1);
screamer 1:37392c1b4cf8 41 // Default temperature reading from microcontroller
screamer 1:37392c1b4cf8 42 AnalogIn adc_temp(ADC_TEMP);
screamer 1:37392c1b4cf8 43 // Voltage reference from microcontroller
screamer 1:37392c1b4cf8 44 AnalogIn adc_vref(ADC_VREF);
screamer 0:ea30ba97a865 45
screamer 1:37392c1b4cf8 46 #define SENSORS_POLL_INTERVAL 1.0
screamer 0:ea30ba97a865 47
screamer 1:37392c1b4cf8 48 // Declaring pointers for access to Pelion Client resources outside of main()
screamer 1:37392c1b4cf8 49 MbedCloudClientResource *res_button;
screamer 1:37392c1b4cf8 50 MbedCloudClientResource *res_led;
screamer 1:37392c1b4cf8 51 MbedCloudClientResource *res_temperature;
screamer 1:37392c1b4cf8 52 MbedCloudClientResource *res_voltage;
screamer 1:37392c1b4cf8 53
screamer 1:37392c1b4cf8 54 // When the device is registered, this variable will be used to access various useful information, like device ID etc.
screamer 1:37392c1b4cf8 55 static const ConnectorClientEndpointInfo* endpointInfo;
screamer 0:ea30ba97a865 56
screamer 0:ea30ba97a865 57 /**
screamer 0:ea30ba97a865 58 * PUT handler
screamer 0:ea30ba97a865 59 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 60 * @param newValue Updated value for the resource
screamer 0:ea30ba97a865 61 */
screamer 1:37392c1b4cf8 62 void led_put_callback(MbedCloudClientResource *resource, m2m::String newValue) {
screamer 0:ea30ba97a865 63 printf("PUT received, new value: %s\n", newValue.c_str());
screamer 1:37392c1b4cf8 64 led = atoi(newValue.c_str());
screamer 0:ea30ba97a865 65 }
screamer 0:ea30ba97a865 66
screamer 0:ea30ba97a865 67 /**
screamer 0:ea30ba97a865 68 * POST handler
screamer 0:ea30ba97a865 69 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 70 * @param buffer If a body was passed to the POST function, this contains the data.
screamer 0:ea30ba97a865 71 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
screamer 0:ea30ba97a865 72 * @param size Size of the body
screamer 0:ea30ba97a865 73 */
screamer 1:37392c1b4cf8 74 void led_post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
screamer 1:37392c1b4cf8 75 printf("POST received. Going to blink LED pattern: %s\n", res_led->get_value().c_str());
screamer 1:37392c1b4cf8 76 led = atoi(res_led->get_value().c_str());
screamer 1:37392c1b4cf8 77 }
screamer 0:ea30ba97a865 78
screamer 1:37392c1b4cf8 79 /**
screamer 1:37392c1b4cf8 80 * Button function triggered by the physical button press.
screamer 1:37392c1b4cf8 81 */
screamer 1:37392c1b4cf8 82 void button_press() {
screamer 1:37392c1b4cf8 83 int v = res_button->get_value_int() + 1;
screamer 1:37392c1b4cf8 84 res_button->set_value(v);
screamer 1:37392c1b4cf8 85 printf("Button clicked %d times\n", v);
screamer 0:ea30ba97a865 86 }
screamer 0:ea30ba97a865 87
screamer 0:ea30ba97a865 88 /**
screamer 0:ea30ba97a865 89 * Notification callback handler
screamer 0:ea30ba97a865 90 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 91 * @param status The delivery status of the notification
screamer 0:ea30ba97a865 92 */
screamer 0:ea30ba97a865 93 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
screamer 0:ea30ba97a865 94 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
screamer 0:ea30ba97a865 95 }
screamer 0:ea30ba97a865 96
screamer 0:ea30ba97a865 97 /**
screamer 0:ea30ba97a865 98 * Registration callback handler
screamer 0:ea30ba97a865 99 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
screamer 0:ea30ba97a865 100 */
screamer 0:ea30ba97a865 101 void registered(const ConnectorClientEndpointInfo *endpoint) {
screamer 0:ea30ba97a865 102 printf("Connected to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
screamer 1:37392c1b4cf8 103 endpointInfo = endpoint;
screamer 0:ea30ba97a865 104 }
screamer 0:ea30ba97a865 105
screamer 1:37392c1b4cf8 106 /**
screamer 1:37392c1b4cf8 107 * Update sensors and report their values.
screamer 1:37392c1b4cf8 108 * This function is called periodically.
screamer 1:37392c1b4cf8 109 */
screamer 1:37392c1b4cf8 110 void sensors_update() {
screamer 1:37392c1b4cf8 111 float temp = adc_temp.read()*100;
screamer 1:37392c1b4cf8 112 float vref = adc_vref.read();
screamer 1:37392c1b4cf8 113 printf("ADC temp: %6.4f C, vref: %6.4f %%\r\n", temp, vref);
screamer 1:37392c1b4cf8 114 if (endpointInfo) {
screamer 1:37392c1b4cf8 115 res_temperature->set_value(temp);
screamer 1:37392c1b4cf8 116 res_voltage->set_value(vref);
screamer 1:37392c1b4cf8 117 }
screamer 1:37392c1b4cf8 118 }
screamer 1:37392c1b4cf8 119
screamer 1:37392c1b4cf8 120
screamer 0:ea30ba97a865 121 int main(void) {
screamer 0:ea30ba97a865 122 printf("Starting Simple Pelion Device Management Client example\n");
screamer 1:37392c1b4cf8 123
screamer 1:37392c1b4cf8 124 // If the User button is pressed ons start, then format storage.
screamer 1:37392c1b4cf8 125 const int PRESSED = 1;
screamer 1:37392c1b4cf8 126 DigitalIn *user_button = new DigitalIn(USER_BUTTON);
screamer 1:37392c1b4cf8 127 if (user_button->read() == PRESSED) {
screamer 1:37392c1b4cf8 128 printf("User button is pushed on start. Formatting the storage...\n");
screamer 1:37392c1b4cf8 129 int storage_status = fs.reformat(&sd);
screamer 1:37392c1b4cf8 130 if (storage_status != 0) {
screamer 1:37392c1b4cf8 131 if (sd.erase(0, sd.size()) == 0) {
screamer 1:37392c1b4cf8 132 if (fs.format(&sd) == 0) {
screamer 1:37392c1b4cf8 133 storage_status = 0;
screamer 1:37392c1b4cf8 134 printf("The storage reformatted successfully.\n");
screamer 1:37392c1b4cf8 135 }
screamer 1:37392c1b4cf8 136 }
screamer 1:37392c1b4cf8 137 }
screamer 1:37392c1b4cf8 138 if (storage_status != 0) {
screamer 1:37392c1b4cf8 139 printf("ERROR: Failed to reformat the storage (%d).\n", storage_status);
screamer 1:37392c1b4cf8 140 }
screamer 1:37392c1b4cf8 141 }
screamer 0:ea30ba97a865 142
screamer 0:ea30ba97a865 143 // Connect to the internet (DHCP is expected to be on)
screamer 1:37392c1b4cf8 144 printf("Connecting to the network using Wifi...\n");
screamer 1:37392c1b4cf8 145 net = NetworkInterface::get_default_instance();
screamer 0:ea30ba97a865 146
screamer 1:37392c1b4cf8 147 nsapi_error_t net_status = -1;
screamer 1:37392c1b4cf8 148 for (int tries = 0; tries < 3; tries++) {
screamer 1:37392c1b4cf8 149 net_status = net->connect();
screamer 1:37392c1b4cf8 150 if (net_status == NSAPI_ERROR_OK) {
screamer 1:37392c1b4cf8 151 break;
screamer 1:37392c1b4cf8 152 } else {
screamer 1:37392c1b4cf8 153 printf("Unable to connect to network. Retrying...\n");
screamer 1:37392c1b4cf8 154 }
screamer 1:37392c1b4cf8 155 }
screamer 1:37392c1b4cf8 156
screamer 1:37392c1b4cf8 157 if (net_status != NSAPI_ERROR_OK) {
screamer 1:37392c1b4cf8 158 printf("ERROR: Connecting to the network failed (%d)!\n", net_status);
screamer 0:ea30ba97a865 159 return -1;
screamer 0:ea30ba97a865 160 }
screamer 0:ea30ba97a865 161
screamer 0:ea30ba97a865 162 printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address());
screamer 0:ea30ba97a865 163
screamer 1:37392c1b4cf8 164 // SimpleMbedCloudClient handles registering over LwM2M to Pelion DM
screamer 0:ea30ba97a865 165 SimpleMbedCloudClient client(net, bd, &fs);
screamer 0:ea30ba97a865 166 int client_status = client.init();
screamer 0:ea30ba97a865 167 if (client_status != 0) {
screamer 1:37392c1b4cf8 168 printf("ERROR: Pelion Client initialization failed (%d)\n", client_status);
screamer 0:ea30ba97a865 169 return -1;
screamer 0:ea30ba97a865 170 }
screamer 0:ea30ba97a865 171
screamer 0:ea30ba97a865 172 // Creating resources, which can be written or read from the cloud
screamer 1:37392c1b4cf8 173 res_button = client.create_resource("3200/0/5501", "button_count");
screamer 1:37392c1b4cf8 174 res_button->set_value(0);
screamer 1:37392c1b4cf8 175 res_button->methods(M2MMethod::GET);
screamer 1:37392c1b4cf8 176 res_button->observable(true);
screamer 1:37392c1b4cf8 177 res_button->attach_notification_callback(button_callback);
screamer 1:37392c1b4cf8 178
screamer 1:37392c1b4cf8 179 res_led = client.create_resource("3201/0/5853", "led_state");
screamer 1:37392c1b4cf8 180 res_led->set_value(1);
screamer 1:37392c1b4cf8 181 res_led->methods(M2MMethod::GET | M2MMethod::PUT);
screamer 1:37392c1b4cf8 182 res_led->attach_put_callback(led_put_callback);
screamer 0:ea30ba97a865 183
screamer 1:37392c1b4cf8 184 // Sensor resources
screamer 1:37392c1b4cf8 185 res_temperature = client.create_resource("3303/0/5700", "temperature");
screamer 1:37392c1b4cf8 186 res_temperature->set_value(0);
screamer 1:37392c1b4cf8 187 res_temperature->methods(M2MMethod::GET);
screamer 1:37392c1b4cf8 188 res_temperature->observable(true);
screamer 0:ea30ba97a865 189
screamer 1:37392c1b4cf8 190 res_voltage = client.create_resource("3316/0/5700", "voltage");
screamer 1:37392c1b4cf8 191 res_voltage->set_value(0);
screamer 1:37392c1b4cf8 192 res_voltage->methods(M2MMethod::GET);
screamer 1:37392c1b4cf8 193 res_voltage->observable(true);
screamer 0:ea30ba97a865 194
screamer 0:ea30ba97a865 195 printf("Initialized Pelion Client. Registering...\n");
screamer 0:ea30ba97a865 196
screamer 0:ea30ba97a865 197 // Callback that fires when registering is complete
screamer 0:ea30ba97a865 198 client.on_registered(&registered);
screamer 0:ea30ba97a865 199
screamer 1:37392c1b4cf8 200 // Register with Pelion DM
screamer 0:ea30ba97a865 201 client.register_and_connect();
screamer 0:ea30ba97a865 202
screamer 1:37392c1b4cf8 203 int i = 600; // wait 60 seconds
screamer 1:37392c1b4cf8 204 while (i-- > 0 && !client.is_client_registered()) {
screamer 1:37392c1b4cf8 205 wait_ms(100);
screamer 1:37392c1b4cf8 206 }
screamer 1:37392c1b4cf8 207
screamer 1:37392c1b4cf8 208 button.fall(eventQueue.event(&button_press));
screamer 1:37392c1b4cf8 209
screamer 0:ea30ba97a865 210 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
screamer 0:ea30ba97a865 211 Ticker timer;
screamer 1:37392c1b4cf8 212 timer.attach(eventQueue.event(&sensors_update), SENSORS_POLL_INTERVAL);
screamer 0:ea30ba97a865 213
screamer 0:ea30ba97a865 214 // You can easily run the eventQueue in a separate thread if required
screamer 0:ea30ba97a865 215 eventQueue.dispatch_forever();
screamer 0:ea30ba97a865 216 }
screamer 0:ea30ba97a865 217 #endif