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

pelion-example-common-DISCO_F413ZH

main.cpp@0:ea30ba97a865, 2018-12-10 (annotated)

Committer:
screamer
Date:
Mon Dec 10 20:14:17 2018 +0000
Revision:
0:ea30ba97a865
Child:
1:37392c1b4cf8
Initial 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 0:ea30ba97a865 23
screamer 0:ea30ba97a865 24 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
screamer 0:ea30ba97a865 25 // 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 26 EventQueue eventQueue;
screamer 0:ea30ba97a865 27
screamer 0:ea30ba97a865 28 // Default block device
screamer 0:ea30ba97a865 29 BlockDevice *bd = BlockDevice::get_default_instance();
screamer 0:ea30ba97a865 30 FATFileSystem fs("fs");
screamer 0:ea30ba97a865 31
screamer 0:ea30ba97a865 32 // Default network interface object
screamer 0:ea30ba97a865 33 NetworkInterface *net = NetworkInterface::get_default_instance();
screamer 0:ea30ba97a865 34
screamer 0:ea30ba97a865 35 // Declaring pointers for access to Pelion Device Management Client resources outside of main()
screamer 0:ea30ba97a865 36 MbedCloudClientResource *button_res;
screamer 0:ea30ba97a865 37 MbedCloudClientResource *pattern_res;
screamer 0:ea30ba97a865 38
screamer 0:ea30ba97a865 39 // This function gets triggered by the timer. It's easy to replace it by an InterruptIn and fall() mode on a real button
screamer 0:ea30ba97a865 40 void fake_button_press() {
screamer 0:ea30ba97a865 41 int v = button_res->get_value_int() + 1;
screamer 0:ea30ba97a865 42
screamer 0:ea30ba97a865 43 button_res->set_value(v);
screamer 0:ea30ba97a865 44
screamer 0:ea30ba97a865 45 printf("Simulated button clicked %d times\n", v);
screamer 0:ea30ba97a865 46 }
screamer 0:ea30ba97a865 47
screamer 0:ea30ba97a865 48 /**
screamer 0:ea30ba97a865 49 * PUT handler
screamer 0:ea30ba97a865 50 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 51 * @param newValue Updated value for the resource
screamer 0:ea30ba97a865 52 */
screamer 0:ea30ba97a865 53 void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) {
screamer 0:ea30ba97a865 54 printf("PUT received, new value: %s\n", newValue.c_str());
screamer 0:ea30ba97a865 55 }
screamer 0:ea30ba97a865 56
screamer 0:ea30ba97a865 57 /**
screamer 0:ea30ba97a865 58 * POST handler
screamer 0:ea30ba97a865 59 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 60 * @param buffer If a body was passed to the POST function, this contains the data.
screamer 0:ea30ba97a865 61 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
screamer 0:ea30ba97a865 62 * @param size Size of the body
screamer 0:ea30ba97a865 63 */
screamer 0:ea30ba97a865 64 void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
screamer 0:ea30ba97a865 65 printf("POST received. Going to blink LED pattern: %s\n", pattern_res->get_value().c_str());
screamer 0:ea30ba97a865 66
screamer 0:ea30ba97a865 67 static DigitalOut augmentedLed(LED1); // LED that is used for blinking the pattern
screamer 0:ea30ba97a865 68
screamer 0:ea30ba97a865 69 // Parse the pattern string, and toggle the LED in that pattern
screamer 0:ea30ba97a865 70 string s = std::string(pattern_res->get_value().c_str());
screamer 0:ea30ba97a865 71 size_t i = 0;
screamer 0:ea30ba97a865 72 size_t pos = s.find(':');
screamer 0:ea30ba97a865 73 while (pos != string::npos) {
screamer 0:ea30ba97a865 74 wait_ms(atoi(s.substr(i, pos - i).c_str()));
screamer 0:ea30ba97a865 75 augmentedLed = !augmentedLed;
screamer 0:ea30ba97a865 76
screamer 0:ea30ba97a865 77 i = ++pos;
screamer 0:ea30ba97a865 78 pos = s.find(':', pos);
screamer 0:ea30ba97a865 79
screamer 0:ea30ba97a865 80 if (pos == string::npos) {
screamer 0:ea30ba97a865 81 wait_ms(atoi(s.substr(i, s.length()).c_str()));
screamer 0:ea30ba97a865 82 augmentedLed = !augmentedLed;
screamer 0:ea30ba97a865 83 }
screamer 0:ea30ba97a865 84 }
screamer 0:ea30ba97a865 85 }
screamer 0:ea30ba97a865 86
screamer 0:ea30ba97a865 87 /**
screamer 0:ea30ba97a865 88 * Notification callback handler
screamer 0:ea30ba97a865 89 * @param resource The resource that triggered the callback
screamer 0:ea30ba97a865 90 * @param status The delivery status of the notification
screamer 0:ea30ba97a865 91 */
screamer 0:ea30ba97a865 92 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
screamer 0:ea30ba97a865 93 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
screamer 0:ea30ba97a865 94 }
screamer 0:ea30ba97a865 95
screamer 0:ea30ba97a865 96 /**
screamer 0:ea30ba97a865 97 * Registration callback handler
screamer 0:ea30ba97a865 98 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
screamer 0:ea30ba97a865 99 */
screamer 0:ea30ba97a865 100 void registered(const ConnectorClientEndpointInfo *endpoint) {
screamer 0:ea30ba97a865 101 printf("Connected to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
screamer 0:ea30ba97a865 102 }
screamer 0:ea30ba97a865 103
screamer 0:ea30ba97a865 104 int main(void) {
screamer 0:ea30ba97a865 105 printf("Starting Simple Pelion Device Management Client example\n");
screamer 0:ea30ba97a865 106 printf("Connecting to the network...\n");
screamer 0:ea30ba97a865 107
screamer 0:ea30ba97a865 108 // Connect to the internet (DHCP is expected to be on)
screamer 0:ea30ba97a865 109 nsapi_error_t status = net->connect();
screamer 0:ea30ba97a865 110
screamer 0:ea30ba97a865 111 if (status != NSAPI_ERROR_OK) {
screamer 0:ea30ba97a865 112 printf("Connecting to the network failed %d!\n", status);
screamer 0:ea30ba97a865 113 return -1;
screamer 0:ea30ba97a865 114 }
screamer 0:ea30ba97a865 115
screamer 0:ea30ba97a865 116 printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address());
screamer 0:ea30ba97a865 117
screamer 0:ea30ba97a865 118 // SimpleMbedCloudClient handles registering over LwM2M to Pelion Device Management
screamer 0:ea30ba97a865 119 SimpleMbedCloudClient client(net, bd, &fs);
screamer 0:ea30ba97a865 120 int client_status = client.init();
screamer 0:ea30ba97a865 121 if (client_status != 0) {
screamer 0:ea30ba97a865 122 printf("Pelion Client initialization failed (%d)\n", client_status);
screamer 0:ea30ba97a865 123 return -1;
screamer 0:ea30ba97a865 124 }
screamer 0:ea30ba97a865 125
screamer 0:ea30ba97a865 126 // Creating resources, which can be written or read from the cloud
screamer 0:ea30ba97a865 127 button_res = client.create_resource("3200/0/5501", "button_count");
screamer 0:ea30ba97a865 128 button_res->set_value(0);
screamer 0:ea30ba97a865 129 button_res->methods(M2MMethod::GET);
screamer 0:ea30ba97a865 130 button_res->observable(true);
screamer 0:ea30ba97a865 131 button_res->attach_notification_callback(button_callback);
screamer 0:ea30ba97a865 132
screamer 0:ea30ba97a865 133 pattern_res = client.create_resource("3201/0/5853", "blink_pattern");
screamer 0:ea30ba97a865 134 pattern_res->set_value("500:500:500:500:500:500:500:500");
screamer 0:ea30ba97a865 135 pattern_res->methods(M2MMethod::GET | M2MMethod::PUT);
screamer 0:ea30ba97a865 136 pattern_res->attach_put_callback(pattern_updated);
screamer 0:ea30ba97a865 137
screamer 0:ea30ba97a865 138 MbedCloudClientResource *blink_res = client.create_resource("3201/0/5850", "blink_action");
screamer 0:ea30ba97a865 139 blink_res->methods(M2MMethod::POST);
screamer 0:ea30ba97a865 140 blink_res->attach_post_callback(blink_callback);
screamer 0:ea30ba97a865 141
screamer 0:ea30ba97a865 142 printf("Initialized Pelion Client. Registering...\n");
screamer 0:ea30ba97a865 143
screamer 0:ea30ba97a865 144 // Callback that fires when registering is complete
screamer 0:ea30ba97a865 145 client.on_registered(&registered);
screamer 0:ea30ba97a865 146
screamer 0:ea30ba97a865 147 // Register with Pelion Device Management
screamer 0:ea30ba97a865 148 client.register_and_connect();
screamer 0:ea30ba97a865 149
screamer 0:ea30ba97a865 150 // Placeholder for callback to update local resource when GET comes.
screamer 0:ea30ba97a865 151 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
screamer 0:ea30ba97a865 152 Ticker timer;
screamer 0:ea30ba97a865 153 timer.attach(eventQueue.event(&fake_button_press), 5.0);
screamer 0:ea30ba97a865 154
screamer 0:ea30ba97a865 155 // You can easily run the eventQueue in a separate thread if required
screamer 0:ea30ba97a865 156 eventQueue.dispatch_forever();
screamer 0:ea30ba97a865 157 }
screamer 0:ea30ba97a865 158 #endif