Toyomasa Watarai / Mbed OS mbed-cloud-connect-example-wifi

Simple Mbed Cloud client application using features of K64 including Wi-Fi and SD Card

Fork of mbed-cloud-connect-example-ethernet by NXP

main.cpp@11:4cd5fd7c7821, 2018-05-21 (annotated)

Committer:
MACRUM
Date:
Mon May 21 09:49:53 2018 +0000
Revision:
11:4cd5fd7c7821
Parent:
8:ace9e5de6491 
Changed to Wi-Fi connectivity (ESP8266)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MarceloSalazar 0:e13a8a944e25 1 // ----------------------------------------------------------------------------
MarceloSalazar 0:e13a8a944e25 2 // Copyright 2016-2017 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 1:1ccf36276cd3 20 #include "mbed-trace/mbed_trace.h"
MarceloSalazar 1:1ccf36276cd3 21 #include "mbed-trace-helper.h"
MarceloSalazar 0:e13a8a944e25 22 #include "simple-mbed-cloud-client.h"
MarceloSalazar 1:1ccf36276cd3 23 #include "key-config-manager/kcm_status.h"
MarceloSalazar 1:1ccf36276cd3 24 #include "key-config-manager/key_config_manager.h"
MarceloSalazar 1:1ccf36276cd3 25 #include "SDBlockDevice.h"
MarceloSalazar 1:1ccf36276cd3 26 #include "FATFileSystem.h"
MACRUM 11:4cd5fd7c7821 27 #include "ESP8266Interface.h"
MACRUM 11:4cd5fd7c7821 28
MACRUM 11:4cd5fd7c7821 29 #define WIFI_SSID "SSID"
MACRUM 11:4cd5fd7c7821 30 #define WIFI_PSWD "PASSWORD"
MarceloSalazar 1:1ccf36276cd3 31
maclobdell 8:ace9e5de6491 32 /* The following app uses Mbed Cloud with SD Card storage, button, & led */
maclobdell 8:ace9e5de6491 33
MarceloSalazar 4:a107dae867fb 34 // Placeholder to hardware that trigger events (timer, button, etc)
maclobdell 8:ace9e5de6491 35 //Ticker timer;
maclobdell 8:ace9e5de6491 36 /* K64 & K66 */
maclobdell 8:ace9e5de6491 37 InterruptIn sw2(SW2);
maclobdell 8:ace9e5de6491 38 DigitalOut led2(LED2);
MACRUM 11:4cd5fd7c7821 39 ESP8266Interface net(D1, D0);
MACRUM 11:4cd5fd7c7821 40
maclobdell 8:ace9e5de6491 41 /* */
MarceloSalazar 0:e13a8a944e25 42
bridadan 5:c18fab181ede 43 // Placeholder for storage
maclobdell 8:ace9e5de6491 44 /* K64 & K66 */
bridadan 5:c18fab181ede 45 SDBlockDevice sd(PTE3, PTE1, PTE2, PTE4);
bridadan 5:c18fab181ede 46 FATFileSystem fs("sd");
maclobdell 8:ace9e5de6491 47 /* */
maclobdell 8:ace9e5de6491 48
MarceloSalazar 0:e13a8a944e25 49 // Pointers to the resources that will be created in main_application().
MarceloSalazar 1:1ccf36276cd3 50 static MbedCloudClientResource* pattern_ptr;
maclobdell 8:ace9e5de6491 51 static MbedCloudClientResource* button_ptr;
MarceloSalazar 0:e13a8a944e25 52
MarceloSalazar 0:e13a8a944e25 53 // Pointer to mbedClient, used for calling close function.
MarceloSalazar 0:e13a8a944e25 54 static SimpleMbedCloudClient *client;
MarceloSalazar 0:e13a8a944e25 55
MarceloSalazar 1:1ccf36276cd3 56 static bool button_pressed = false;
maclobdell 8:ace9e5de6491 57 static int button_count = 0;
maclobdell 8:ace9e5de6491 58
MarceloSalazar 1:1ccf36276cd3 59 void button_press() {
MarceloSalazar 1:1ccf36276cd3 60 button_pressed = true;
maclobdell 8:ace9e5de6491 61 ++button_count;
maclobdell 8:ace9e5de6491 62 button_ptr->set_value(button_count);
MarceloSalazar 1:1ccf36276cd3 63 }
MarceloSalazar 1:1ccf36276cd3 64
MarceloSalazar 1:1ccf36276cd3 65 void pattern_updated(const char *) {
bridadan 5:c18fab181ede 66 printf("PUT received, new value: %s\n", pattern_ptr->get_value().c_str());
MarceloSalazar 2:6ed27f413b30 67 // Placeholder for PUT action
MarceloSalazar 0:e13a8a944e25 68 }
MarceloSalazar 0:e13a8a944e25 69
MarceloSalazar 0:e13a8a944e25 70 void blink_callback(void *) {
bridadan 5:c18fab181ede 71 String pattern_str = pattern_ptr->get_value();
bridadan 5:c18fab181ede 72 const char *pattern = pattern_str.c_str();
MarceloSalazar 2:6ed27f413b30 73 printf("POST received. LED pattern = %s\n", pattern);
MarceloSalazar 2:6ed27f413b30 74 // Placeholder for POST action
MarceloSalazar 0:e13a8a944e25 75 // The pattern is something like 500:200:500, so parse that.
maclobdell 8:ace9e5de6491 76 // LED blinking is done while parsing.
maclobdell 8:ace9e5de6491 77
maclobdell 8:ace9e5de6491 78 while (*pattern != '\0') {
maclobdell 8:ace9e5de6491 79 //make a short blink on the led
maclobdell 8:ace9e5de6491 80 led2 = 0;
maclobdell 8:ace9e5de6491 81 wait_ms(20);
maclobdell 8:ace9e5de6491 82 led2 = 1;
maclobdell 8:ace9e5de6491 83 // Wait for requested time.
maclobdell 8:ace9e5de6491 84 wait_ms(atoi(pattern));
maclobdell 8:ace9e5de6491 85 // Search for next value.
maclobdell 8:ace9e5de6491 86 pattern = strchr(pattern, ':');
maclobdell 8:ace9e5de6491 87 if(!pattern) {
maclobdell 8:ace9e5de6491 88 //we're done, give one last blink to end the pattern
maclobdell 8:ace9e5de6491 89 led2 = 0;
maclobdell 8:ace9e5de6491 90 wait_ms(20);
maclobdell 8:ace9e5de6491 91 led2 = 1;
maclobdell 8:ace9e5de6491 92 break; // while
maclobdell 8:ace9e5de6491 93 }
maclobdell 8:ace9e5de6491 94 pattern++;
maclobdell 8:ace9e5de6491 95 }
MarceloSalazar 0:e13a8a944e25 96 }
MarceloSalazar 0:e13a8a944e25 97
MarceloSalazar 2:6ed27f413b30 98 void button_callback(const M2MBase& object, const NoticationDeliveryStatus status)
MarceloSalazar 0:e13a8a944e25 99 {
MarceloSalazar 2:6ed27f413b30 100 printf("Button notification. Callback: (%s)\n", object.uri_path());
MarceloSalazar 2:6ed27f413b30 101 // Placeholder for GET
MarceloSalazar 0:e13a8a944e25 102 }
MarceloSalazar 0:e13a8a944e25 103
MarceloSalazar 0:e13a8a944e25 104
MarceloSalazar 0:e13a8a944e25 105 int main(void)
MarceloSalazar 0:e13a8a944e25 106 {
MarceloSalazar 2:6ed27f413b30 107 // Requires DAPLink 245+ (https://github.com/ARMmbed/DAPLink/pull/364)
MarceloSalazar 2:6ed27f413b30 108 // Older versions: workaround to prevent possible deletion of credentials:
MarceloSalazar 0:e13a8a944e25 109 wait(2);
MarceloSalazar 0:e13a8a944e25 110
MarceloSalazar 1:1ccf36276cd3 111 // Misc OS setup
MarceloSalazar 1:1ccf36276cd3 112 srand(time(NULL));
MarceloSalazar 1:1ccf36276cd3 113
MarceloSalazar 1:1ccf36276cd3 114 printf("Start Simple Mbed Cloud Client\n");
MarceloSalazar 1:1ccf36276cd3 115
MarceloSalazar 1:1ccf36276cd3 116 // Initialize SD card
MarceloSalazar 1:1ccf36276cd3 117 int status = sd.init();
MarceloSalazar 1:1ccf36276cd3 118 if (status != BD_ERROR_OK) {
MarceloSalazar 1:1ccf36276cd3 119 printf("Failed to init SD card\r\n");
MarceloSalazar 1:1ccf36276cd3 120 return -1;
MarceloSalazar 1:1ccf36276cd3 121 }
MarceloSalazar 0:e13a8a944e25 122
MarceloSalazar 1:1ccf36276cd3 123 // Mount the file system (reformatting on failure)
MarceloSalazar 1:1ccf36276cd3 124 status = fs.mount(&sd);
MarceloSalazar 1:1ccf36276cd3 125 if (status) {
MarceloSalazar 1:1ccf36276cd3 126 printf("Failed to mount FAT file system, reformatting...\r\n");
MarceloSalazar 1:1ccf36276cd3 127 status = fs.reformat(&sd);
MarceloSalazar 1:1ccf36276cd3 128 if (status) {
MarceloSalazar 1:1ccf36276cd3 129 printf("Failed to reformat FAT file system\r\n");
MarceloSalazar 1:1ccf36276cd3 130 return -1;
MarceloSalazar 1:1ccf36276cd3 131 } else {
MarceloSalazar 1:1ccf36276cd3 132 printf("Reformat and mount complete\r\n");
MarceloSalazar 1:1ccf36276cd3 133 }
MarceloSalazar 1:1ccf36276cd3 134 }
MarceloSalazar 1:1ccf36276cd3 135
MACRUM 11:4cd5fd7c7821 136 printf("Connecting to the network using Wi-Fi...\n");
MarceloSalazar 1:1ccf36276cd3 137
MACRUM 11:4cd5fd7c7821 138 status = net.connect(WIFI_SSID, WIFI_PSWD, NSAPI_SECURITY_WPA_WPA2);
MACRUM 11:4cd5fd7c7821 139
MarceloSalazar 1:1ccf36276cd3 140 if (status) {
MarceloSalazar 1:1ccf36276cd3 141 printf("Connection to Network Failed %d!\n", status);
MarceloSalazar 1:1ccf36276cd3 142 return -1;
MarceloSalazar 1:1ccf36276cd3 143 } else {
MarceloSalazar 1:1ccf36276cd3 144 const char *ip_addr = net.get_ip_address();
MarceloSalazar 1:1ccf36276cd3 145 printf("Connected successfully\n");
MarceloSalazar 1:1ccf36276cd3 146 printf("IP address %s\n", ip_addr);
MarceloSalazar 1:1ccf36276cd3 147 }
MarceloSalazar 1:1ccf36276cd3 148
MarceloSalazar 1:1ccf36276cd3 149 SimpleMbedCloudClient mbedClient(&net);
MarceloSalazar 0:e13a8a944e25 150 // Save pointer to mbedClient so that other functions can access it.
MarceloSalazar 0:e13a8a944e25 151 client = &mbedClient;
MarceloSalazar 0:e13a8a944e25 152
MarceloSalazar 1:1ccf36276cd3 153 status = mbedClient.init();
MarceloSalazar 1:1ccf36276cd3 154 if (status) {
MarceloSalazar 1:1ccf36276cd3 155 return -1;
MarceloSalazar 1:1ccf36276cd3 156 }
MarceloSalazar 1:1ccf36276cd3 157
MarceloSalazar 0:e13a8a944e25 158 printf("Client initialized\r\n");
MarceloSalazar 0:e13a8a944e25 159
MarceloSalazar 1:1ccf36276cd3 160 // Mbed Cloud Client resource setup
MarceloSalazar 1:1ccf36276cd3 161 MbedCloudClientResource *button = mbedClient.create_resource("3200/0/5501", "button_resource");
MarceloSalazar 1:1ccf36276cd3 162 button->set_value("0");
MarceloSalazar 1:1ccf36276cd3 163 button->methods(M2MMethod::GET);
MarceloSalazar 1:1ccf36276cd3 164 button->observable(true);
bridadan 5:c18fab181ede 165 button->attach_notification_callback(button_callback);
maclobdell 8:ace9e5de6491 166 button_ptr = button;
maclobdell 8:ace9e5de6491 167
MarceloSalazar 1:1ccf36276cd3 168 MbedCloudClientResource *pattern = mbedClient.create_resource("3201/0/5853", "pattern_resource");
MarceloSalazar 1:1ccf36276cd3 169 pattern->set_value("500:500:500:500");
MarceloSalazar 1:1ccf36276cd3 170 pattern->methods(M2MMethod::GET | M2MMethod::PUT);
bridadan 5:c18fab181ede 171 pattern->attach_put_callback(pattern_updated);
MarceloSalazar 1:1ccf36276cd3 172 pattern_ptr = pattern;
MarceloSalazar 0:e13a8a944e25 173
MarceloSalazar 1:1ccf36276cd3 174 MbedCloudClientResource *blink = mbedClient.create_resource("3201/0/5850", "blink_resource");
MarceloSalazar 1:1ccf36276cd3 175 blink->methods(M2MMethod::POST);
bridadan 5:c18fab181ede 176 blink->attach_post_callback(blink_callback);
MarceloSalazar 0:e13a8a944e25 177
MarceloSalazar 0:e13a8a944e25 178 mbedClient.register_and_connect();
MarceloSalazar 0:e13a8a944e25 179
bridadan 6:254a7e7fbef1 180 // Wait for client to finish registering
bridadan 6:254a7e7fbef1 181 while (!mbedClient.is_client_registered()) {
bridadan 6:254a7e7fbef1 182 wait_ms(100);
bridadan 6:254a7e7fbef1 183 }
bridadan 6:254a7e7fbef1 184
bridadan 6:254a7e7fbef1 185 // Placeholder for callback to update local resource when GET comes.
maclobdell 8:ace9e5de6491 186 //timer.attach(&button_press, 5.0);
maclobdell 8:ace9e5de6491 187 sw2.mode(PullUp);
maclobdell 8:ace9e5de6491 188 sw2.fall(button_press);
maclobdell 8:ace9e5de6491 189 button_count = 0;
maclobdell 8:ace9e5de6491 190
MarceloSalazar 0:e13a8a944e25 191 // Check if client is registering or registered, if true sleep and repeat.
MarceloSalazar 0:e13a8a944e25 192 while (mbedClient.is_register_called()) {
maclobdell 8:ace9e5de6491 193 //static int button_count = 0;
maclobdell 8:ace9e5de6491 194
MarceloSalazar 1:1ccf36276cd3 195 wait_ms(100);
MarceloSalazar 1:1ccf36276cd3 196
MarceloSalazar 1:1ccf36276cd3 197 if (button_pressed) {
MarceloSalazar 1:1ccf36276cd3 198 button_pressed = false;
maclobdell 8:ace9e5de6491 199 //printf("button clicked %d times\r\n", ++button_count);
maclobdell 8:ace9e5de6491 200 //button->set_value(button_count);
maclobdell 8:ace9e5de6491 201 printf("button clicked %d times\r\n", button_count);
MarceloSalazar 0:e13a8a944e25 202 }
maclobdell 8:ace9e5de6491 203
MarceloSalazar 0:e13a8a944e25 204 }
MarceloSalazar 0:e13a8a944e25 205
MarceloSalazar 0:e13a8a944e25 206 // Client unregistered, exit program.
MarceloSalazar 0:e13a8a944e25 207 return 0;
MarceloSalazar 0:e13a8a944e25 208 }