Toyomasa Watarai / Mbed OS mbed-cloud-example-ESP8266

Simple Mbed Cloud client application using features of K64F including Wi-Fi and SD Card

Dependencies:   LM75B MMA7660

main.cpp@9:9fade4bb2774, 2018-04-25 (annotated)

Committer:
MarceloSalazar
Date:
Wed Apr 25 00:16:01 2018 +0100
Revision:
9:9fade4bb2774
Parent:
6:254a7e7fbef1
Child:
11:354983151a8e
Update to MCC v1.3.0 GA

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MarceloSalazar 0:e13a8a944e25 1 // ----------------------------------------------------------------------------
MarceloSalazar 9:9fade4bb2774 2 // Copyright 2016-2018 ARM Ltd.
MarceloSalazar 0:e13a8a944e25 3 //
MarceloSalazar 0:e13a8a944e25 4 // SPDX-License-Identifier: Apache-2.0
MarceloSalazar 0:e13a8a944e25 5 //
MarceloSalazar 0:e13a8a944e25 6 // Licensed under the Apache License, Version 2.0 (the "License");
MarceloSalazar 0:e13a8a944e25 7 // you may not use this file except in compliance with the License.
MarceloSalazar 0:e13a8a944e25 8 // You may obtain a copy of the License at
MarceloSalazar 0:e13a8a944e25 9 //
MarceloSalazar 0:e13a8a944e25 10 // http://www.apache.org/licenses/LICENSE-2.0
MarceloSalazar 0:e13a8a944e25 11 //
MarceloSalazar 0:e13a8a944e25 12 // Unless required by applicable law or agreed to in writing, software
MarceloSalazar 0:e13a8a944e25 13 // distributed under the License is distributed on an "AS IS" BASIS,
MarceloSalazar 0:e13a8a944e25 14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MarceloSalazar 0:e13a8a944e25 15 // See the License for the specific language governing permissions and
MarceloSalazar 0:e13a8a944e25 16 // limitations under the License.
MarceloSalazar 0:e13a8a944e25 17 // ----------------------------------------------------------------------------
MarceloSalazar 0:e13a8a944e25 18
MarceloSalazar 1:1ccf36276cd3 19 #include "mbed.h"
MarceloSalazar 0:e13a8a944e25 20 #include "simple-mbed-cloud-client.h"
MarceloSalazar 1:1ccf36276cd3 21 #include "SDBlockDevice.h"
MarceloSalazar 1:1ccf36276cd3 22 #include "FATFileSystem.h"
MarceloSalazar 1:1ccf36276cd3 23 #include "EthernetInterface.h"
MarceloSalazar 1:1ccf36276cd3 24
MarceloSalazar 9:9fade4bb2774 25 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
MarceloSalazar 9:9fade4bb2774 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
MarceloSalazar 9:9fade4bb2774 27 EventQueue eventQueue;
MarceloSalazar 0:e13a8a944e25 28
MarceloSalazar 9:9fade4bb2774 29 // Storage implementation definition, currently using SDBlockDevice (SPI flash, DataFlash, and internal flash are also available)
bridadan 5:c18fab181ede 30 SDBlockDevice sd(PTE3, PTE1, PTE2, PTE4);
MarceloSalazar 9:9fade4bb2774 31 FATFileSystem fs("sd", &sd);
bridadan 5:c18fab181ede 32
MarceloSalazar 9:9fade4bb2774 33 // Declaring pointers for access to Mbed Cloud Client resources outside of main()
MarceloSalazar 9:9fade4bb2774 34 MbedCloudClientResource *button_res;
MarceloSalazar 9:9fade4bb2774 35 MbedCloudClientResource *pattern_res;
MarceloSalazar 0:e13a8a944e25 36
MarceloSalazar 9:9fade4bb2774 37 // This function gets triggered by the timer. It's easy to replace it by an InterruptIn and fall() mode on a real button
MarceloSalazar 9:9fade4bb2774 38 void fake_button_press() {
MarceloSalazar 9:9fade4bb2774 39 int v = button_res->get_value_int() + 1;
MarceloSalazar 0:e13a8a944e25 40
MarceloSalazar 9:9fade4bb2774 41 button_res->set_value(v);
MarceloSalazar 1:1ccf36276cd3 42
MarceloSalazar 9:9fade4bb2774 43 printf("Simulated button clicked %d times\n", v);
MarceloSalazar 1:1ccf36276cd3 44 }
MarceloSalazar 1:1ccf36276cd3 45
MarceloSalazar 9:9fade4bb2774 46 /**
MarceloSalazar 9:9fade4bb2774 47 * PUT handler
MarceloSalazar 9:9fade4bb2774 48 * @param resource The resource that triggered the callback
MarceloSalazar 9:9fade4bb2774 49 * @param newValue Updated value for the resource
MarceloSalazar 9:9fade4bb2774 50 */
MarceloSalazar 9:9fade4bb2774 51 void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) {
MarceloSalazar 9:9fade4bb2774 52 printf("PUT received, new value: %s\n", newValue.c_str());
MarceloSalazar 0:e13a8a944e25 53 }
MarceloSalazar 0:e13a8a944e25 54
MarceloSalazar 9:9fade4bb2774 55 /**
MarceloSalazar 9:9fade4bb2774 56 * POST handler
MarceloSalazar 9:9fade4bb2774 57 * @param resource The resource that triggered the callback
MarceloSalazar 9:9fade4bb2774 58 * @param buffer If a body was passed to the POST function, this contains the data.
MarceloSalazar 9:9fade4bb2774 59 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
MarceloSalazar 9:9fade4bb2774 60 * @param size Size of the body
MarceloSalazar 9:9fade4bb2774 61 */
MarceloSalazar 9:9fade4bb2774 62 void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
MarceloSalazar 9:9fade4bb2774 63 printf("POST received. Going to blink LED pattern: %s\n", pattern_res->get_value().c_str());
MarceloSalazar 9:9fade4bb2774 64
MarceloSalazar 9:9fade4bb2774 65 static DigitalOut augmentedLed(LED1); // LED that is used for blinking the pattern
MarceloSalazar 0:e13a8a944e25 66
MarceloSalazar 9:9fade4bb2774 67 // Parse the pattern string, and toggle the LED in that pattern
MarceloSalazar 9:9fade4bb2774 68 string s = std::string(pattern_res->get_value().c_str());
MarceloSalazar 9:9fade4bb2774 69 size_t i = 0;
MarceloSalazar 9:9fade4bb2774 70 size_t pos = s.find(':');
MarceloSalazar 9:9fade4bb2774 71 while (pos != string::npos) {
MarceloSalazar 9:9fade4bb2774 72 wait_ms(atoi(s.substr(i, pos - i).c_str()));
MarceloSalazar 9:9fade4bb2774 73 augmentedLed = !augmentedLed;
MarceloSalazar 9:9fade4bb2774 74
MarceloSalazar 9:9fade4bb2774 75 i = ++pos;
MarceloSalazar 9:9fade4bb2774 76 pos = s.find(':', pos);
MarceloSalazar 9:9fade4bb2774 77
MarceloSalazar 9:9fade4bb2774 78 if (pos == string::npos) {
MarceloSalazar 9:9fade4bb2774 79 wait_ms(atoi(s.substr(i, s.length()).c_str()));
MarceloSalazar 9:9fade4bb2774 80 augmentedLed = !augmentedLed;
MarceloSalazar 9:9fade4bb2774 81 }
MarceloSalazar 9:9fade4bb2774 82 }
MarceloSalazar 0:e13a8a944e25 83 }
MarceloSalazar 0:e13a8a944e25 84
MarceloSalazar 9:9fade4bb2774 85 /**
MarceloSalazar 9:9fade4bb2774 86 * Notification callback handler
MarceloSalazar 9:9fade4bb2774 87 * @param resource The resource that triggered the callback
MarceloSalazar 9:9fade4bb2774 88 * @param status The delivery status of the notification
MarceloSalazar 9:9fade4bb2774 89 */
MarceloSalazar 9:9fade4bb2774 90 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
MarceloSalazar 9:9fade4bb2774 91 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
MarceloSalazar 9:9fade4bb2774 92 }
MarceloSalazar 1:1ccf36276cd3 93
MarceloSalazar 9:9fade4bb2774 94 /**
MarceloSalazar 9:9fade4bb2774 95 * Registration callback handler
MarceloSalazar 9:9fade4bb2774 96 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
MarceloSalazar 9:9fade4bb2774 97 */
MarceloSalazar 9:9fade4bb2774 98 void registered(const ConnectorClientEndpointInfo *endpoint) {
MarceloSalazar 9:9fade4bb2774 99 printf("Connected to Mbed Cloud. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
MarceloSalazar 9:9fade4bb2774 100 }
MarceloSalazar 1:1ccf36276cd3 101
MarceloSalazar 9:9fade4bb2774 102 int main(void) {
MarceloSalazar 9:9fade4bb2774 103 printf("Starting Simple Mbed Cloud Client example\n");
MarceloSalazar 9:9fade4bb2774 104 printf("Connecting to the network using Ethernet...\n");
MarceloSalazar 9:9fade4bb2774 105
MarceloSalazar 9:9fade4bb2774 106 // Connect to the internet (DHCP is expected to be on)
MarceloSalazar 9:9fade4bb2774 107 EthernetInterface net;
MarceloSalazar 9:9fade4bb2774 108 nsapi_error_t status = net.connect();
MarceloSalazar 9:9fade4bb2774 109
MarceloSalazar 9:9fade4bb2774 110 if (status != 0) {
MarceloSalazar 9:9fade4bb2774 111 printf("Connecting to the network failed %d!\n", status);
MarceloSalazar 1:1ccf36276cd3 112 return -1;
MarceloSalazar 1:1ccf36276cd3 113 }
MarceloSalazar 0:e13a8a944e25 114
MarceloSalazar 9:9fade4bb2774 115 printf("Connected to the network successfully. IP address: %s\n", net.get_ip_address());
MarceloSalazar 1:1ccf36276cd3 116
MarceloSalazar 9:9fade4bb2774 117 // SimpleMbedCloudClient handles registering over LwM2M to Mbed Cloud
MarceloSalazar 9:9fade4bb2774 118 SimpleMbedCloudClient client(&net, &sd, &fs);
MarceloSalazar 9:9fade4bb2774 119 int client_status = client.init();
MarceloSalazar 9:9fade4bb2774 120 if (client_status != 0) {
MarceloSalazar 9:9fade4bb2774 121 printf("Initializing Mbed Cloud Client failed (%d)\n", client_status);
MarceloSalazar 1:1ccf36276cd3 122 return -1;
MarceloSalazar 1:1ccf36276cd3 123 }
MarceloSalazar 1:1ccf36276cd3 124
MarceloSalazar 9:9fade4bb2774 125 // Creating resources, which can be written or read from the cloud
MarceloSalazar 9:9fade4bb2774 126 button_res = client.create_resource("3200/0/5501", "button_count");
MarceloSalazar 9:9fade4bb2774 127 button_res->set_value(0);
MarceloSalazar 9:9fade4bb2774 128 button_res->methods(M2MMethod::GET);
MarceloSalazar 9:9fade4bb2774 129 button_res->observable(true);
MarceloSalazar 9:9fade4bb2774 130 button_res->attach_notification_callback(button_callback);
MarceloSalazar 0:e13a8a944e25 131
MarceloSalazar 9:9fade4bb2774 132 pattern_res = client.create_resource("3201/0/5853", "blink_pattern");
MarceloSalazar 9:9fade4bb2774 133 pattern_res->set_value("500:500:500:500:500:500:500:500");
MarceloSalazar 9:9fade4bb2774 134 pattern_res->methods(M2MMethod::GET | M2MMethod::PUT);
MarceloSalazar 9:9fade4bb2774 135 pattern_res->attach_put_callback(pattern_updated);
MarceloSalazar 0:e13a8a944e25 136
MarceloSalazar 9:9fade4bb2774 137 MbedCloudClientResource *blink_res = client.create_resource("3201/0/5850", "blink_action");
MarceloSalazar 9:9fade4bb2774 138 blink_res->methods(M2MMethod::POST);
MarceloSalazar 9:9fade4bb2774 139 blink_res->attach_post_callback(blink_callback);
MarceloSalazar 9:9fade4bb2774 140
MarceloSalazar 9:9fade4bb2774 141 printf("Initialized Mbed Cloud Client. Registering...\n");
MarceloSalazar 0:e13a8a944e25 142
MarceloSalazar 9:9fade4bb2774 143 // Callback that fires when registering is complete
MarceloSalazar 9:9fade4bb2774 144 client.on_registered(&registered);
MarceloSalazar 0:e13a8a944e25 145
MarceloSalazar 9:9fade4bb2774 146 // Register with Mbed Cloud
MarceloSalazar 9:9fade4bb2774 147 client.register_and_connect();
bridadan 6:254a7e7fbef1 148
bridadan 6:254a7e7fbef1 149 // Placeholder for callback to update local resource when GET comes.
MarceloSalazar 9:9fade4bb2774 150 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
MarceloSalazar 9:9fade4bb2774 151 Ticker timer;
MarceloSalazar 9:9fade4bb2774 152 timer.attach(eventQueue.event(&fake_button_press), 5.0);
MarceloSalazar 1:1ccf36276cd3 153
MarceloSalazar 9:9fade4bb2774 154 // You can easily run the eventQueue in a separate thread if required
MarceloSalazar 9:9fade4bb2774 155 eventQueue.dispatch_forever();
MarceloSalazar 0:e13a8a944e25 156 }