Toyomasa Watarai / Mbed OS mbed-cloud-connect-example-esp8266

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

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

Configuration

  • Put ESP-WROOM-02 shield
  • Put Mbed Application Shield
  • Edit the text in the main.cpp 

#define WIFI_SSID "SSID"
#define WIFI_PSWD "PASSWORD"
  • Download and replace your developer certificate from Mbed Cloud portal from the menu [Mbed Cloud] - [Certificate]

main.cpp@19:999d13f83602, 2018-07-03 (annotated)

Committer:
MACRUM
Date:
Tue Jul 03 04:32:09 2018 +0000
Revision:
19:999d13f83602
Parent:
18:139960a75894 
Add sensor access code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
maclobdell 11:ae1f6fe932dc 1 // ----------------------------------------------------------------------------
maclobdell 11:ae1f6fe932dc 2 // Copyright 2016-2018 ARM Ltd.
maclobdell 11:ae1f6fe932dc 3 //
maclobdell 11:ae1f6fe932dc 4 // SPDX-License-Identifier: Apache-2.0
maclobdell 11:ae1f6fe932dc 5 //
maclobdell 11:ae1f6fe932dc 6 // Licensed under the Apache License, Version 2.0 (the "License");
maclobdell 11:ae1f6fe932dc 7 // you may not use this file except in compliance with the License.
maclobdell 11:ae1f6fe932dc 8 // You may obtain a copy of the License at
maclobdell 11:ae1f6fe932dc 9 //
maclobdell 11:ae1f6fe932dc 10 // http://www.apache.org/licenses/LICENSE-2.0
maclobdell 11:ae1f6fe932dc 11 //
maclobdell 11:ae1f6fe932dc 12 // Unless required by applicable law or agreed to in writing, software
maclobdell 11:ae1f6fe932dc 13 // distributed under the License is distributed on an "AS IS" BASIS,
maclobdell 11:ae1f6fe932dc 14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
maclobdell 11:ae1f6fe932dc 15 // See the License for the specific language governing permissions and
maclobdell 11:ae1f6fe932dc 16 // limitations under the License.
maclobdell 11:ae1f6fe932dc 17 // ----------------------------------------------------------------------------
maclobdell 11:ae1f6fe932dc 18
maclobdell 11:ae1f6fe932dc 19 #include "mbed.h"
maclobdell 11:ae1f6fe932dc 20 #include "simple-mbed-cloud-client.h"
maclobdell 11:ae1f6fe932dc 21 #include "SDBlockDevice.h"
maclobdell 11:ae1f6fe932dc 22 #include "FATFileSystem.h"
MACRUM 18:139960a75894 23 #include "ESP8266Interface.h"
MACRUM 19:999d13f83602 24 #include "MMA7660.h"
MACRUM 19:999d13f83602 25 #include "LM75B.h"
MACRUM 18:139960a75894 26
MACRUM 18:139960a75894 27 #define WIFI_SSID "SSID"
MACRUM 18:139960a75894 28 #define WIFI_PSWD "PASSWORD"
maclobdell 11:ae1f6fe932dc 29
maclobdell 11:ae1f6fe932dc 30 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
maclobdell 11:ae1f6fe932dc 31 // 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
maclobdell 11:ae1f6fe932dc 32 EventQueue eventQueue;
maclobdell 11:ae1f6fe932dc 33 Thread thread1;
maclobdell 11:ae1f6fe932dc 34
maclobdell 11:ae1f6fe932dc 35 // Storage implementation definition, currently using SDBlockDevice (SPI flash, DataFlash, and internal flash are also available)
MACRUM 19:999d13f83602 36 /* K64 & K66 */
maclobdell 11:ae1f6fe932dc 37 InterruptIn sw2(SW2);
maclobdell 11:ae1f6fe932dc 38 DigitalOut led2(LED2);
MACRUM 19:999d13f83602 39
maclobdell 11:ae1f6fe932dc 40 SDBlockDevice sd(PTE3, PTE1, PTE2, PTE4);
maclobdell 11:ae1f6fe932dc 41 FATFileSystem fs("sd", &sd);
MACRUM 18:139960a75894 42 ESP8266Interface net(D1, D0);
MACRUM 19:999d13f83602 43 LM75B lm75b(I2C_SDA, I2C_SCL); // temperature
MACRUM 19:999d13f83602 44 MMA7660 mma7660(I2C_SDA, I2C_SCL); // accel
MACRUM 18:139960a75894 45
MACRUM 19:999d13f83602 46 const int NUM_AXIS = 3;
maclobdell 11:ae1f6fe932dc 47
maclobdell 11:ae1f6fe932dc 48 // Declaring pointers for access to Mbed Cloud Client resources outside of main()
maclobdell 11:ae1f6fe932dc 49 MbedCloudClientResource *button_res;
maclobdell 11:ae1f6fe932dc 50 MbedCloudClientResource *pattern_res;
MACRUM 19:999d13f83602 51 MbedCloudClientResource *temp_res;
MACRUM 19:999d13f83602 52 MbedCloudClientResource *temp_unit_res;
MACRUM 19:999d13f83602 53 MbedCloudClientResource *accel_res[NUM_AXIS];
MACRUM 19:999d13f83602 54 MbedCloudClientResource *acc_unit_res;
maclobdell 11:ae1f6fe932dc 55
maclobdell 11:ae1f6fe932dc 56 static bool button_pressed = false;
maclobdell 11:ae1f6fe932dc 57 static int button_count = 0;
MACRUM 19:999d13f83602 58
MACRUM 19:999d13f83602 59 void button_press()
MACRUM 19:999d13f83602 60 {
maclobdell 11:ae1f6fe932dc 61 button_pressed = true;
maclobdell 11:ae1f6fe932dc 62 ++button_count;
maclobdell 11:ae1f6fe932dc 63 button_res->set_value(button_count);
maclobdell 11:ae1f6fe932dc 64 }
maclobdell 11:ae1f6fe932dc 65
maclobdell 11:ae1f6fe932dc 66 /**
maclobdell 11:ae1f6fe932dc 67 * PUT handler
maclobdell 11:ae1f6fe932dc 68 * @param resource The resource that triggered the callback
maclobdell 11:ae1f6fe932dc 69 * @param newValue Updated value for the resource
maclobdell 11:ae1f6fe932dc 70 */
MACRUM 19:999d13f83602 71 void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue)
MACRUM 19:999d13f83602 72 {
maclobdell 11:ae1f6fe932dc 73 printf("PUT received, new value: %s\n", newValue.c_str());
maclobdell 11:ae1f6fe932dc 74 }
maclobdell 11:ae1f6fe932dc 75
maclobdell 11:ae1f6fe932dc 76 /**
maclobdell 11:ae1f6fe932dc 77 * POST handler
maclobdell 11:ae1f6fe932dc 78 * @param resource The resource that triggered the callback
maclobdell 11:ae1f6fe932dc 79 * @param buffer If a body was passed to the POST function, this contains the data.
maclobdell 11:ae1f6fe932dc 80 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
maclobdell 11:ae1f6fe932dc 81 * @param size Size of the body
maclobdell 11:ae1f6fe932dc 82 */
MACRUM 19:999d13f83602 83 void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size)
MACRUM 19:999d13f83602 84 {
maclobdell 11:ae1f6fe932dc 85 printf("POST received. Going to blink LED pattern: %s\n", pattern_res->get_value().c_str());
maclobdell 11:ae1f6fe932dc 86
maclobdell 11:ae1f6fe932dc 87 static DigitalOut augmentedLed(LED1); // LED that is used for blinking the pattern
maclobdell 11:ae1f6fe932dc 88
maclobdell 11:ae1f6fe932dc 89 // Parse the pattern string, and toggle the LED in that pattern
maclobdell 11:ae1f6fe932dc 90 string s = std::string(pattern_res->get_value().c_str());
maclobdell 11:ae1f6fe932dc 91 size_t i = 0;
maclobdell 11:ae1f6fe932dc 92 size_t pos = s.find(':');
maclobdell 11:ae1f6fe932dc 93 while (pos != string::npos) {
maclobdell 11:ae1f6fe932dc 94 wait_ms(atoi(s.substr(i, pos - i).c_str()));
maclobdell 11:ae1f6fe932dc 95 augmentedLed = !augmentedLed;
maclobdell 11:ae1f6fe932dc 96
maclobdell 11:ae1f6fe932dc 97 i = ++pos;
maclobdell 11:ae1f6fe932dc 98 pos = s.find(':', pos);
maclobdell 11:ae1f6fe932dc 99
maclobdell 11:ae1f6fe932dc 100 if (pos == string::npos) {
maclobdell 11:ae1f6fe932dc 101 wait_ms(atoi(s.substr(i, s.length()).c_str()));
maclobdell 11:ae1f6fe932dc 102 augmentedLed = !augmentedLed;
maclobdell 11:ae1f6fe932dc 103 }
maclobdell 11:ae1f6fe932dc 104 }
maclobdell 11:ae1f6fe932dc 105 }
maclobdell 11:ae1f6fe932dc 106
maclobdell 11:ae1f6fe932dc 107 /**
maclobdell 11:ae1f6fe932dc 108 * Notification callback handler
maclobdell 11:ae1f6fe932dc 109 * @param resource The resource that triggered the callback
maclobdell 11:ae1f6fe932dc 110 * @param status The delivery status of the notification
maclobdell 11:ae1f6fe932dc 111 */
MACRUM 19:999d13f83602 112 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status)
MACRUM 19:999d13f83602 113 {
maclobdell 11:ae1f6fe932dc 114 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
maclobdell 11:ae1f6fe932dc 115 }
maclobdell 11:ae1f6fe932dc 116
MACRUM 19:999d13f83602 117 void temp_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status)
MACRUM 19:999d13f83602 118 {
MACRUM 19:999d13f83602 119 printf("Temperature notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
MACRUM 19:999d13f83602 120 }
MACRUM 19:999d13f83602 121
MACRUM 19:999d13f83602 122 void accel_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status)
MACRUM 19:999d13f83602 123 {
MACRUM 19:999d13f83602 124 printf("Accelerometer notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
MACRUM 19:999d13f83602 125 }
MACRUM 19:999d13f83602 126
MACRUM 19:999d13f83602 127 void measure_sensors()
MACRUM 19:999d13f83602 128 {
MACRUM 19:999d13f83602 129 float temperature, acc[3];
MACRUM 19:999d13f83602 130 const unsigned int buf_size = 20;
MACRUM 19:999d13f83602 131 char buf[buf_size];
MACRUM 19:999d13f83602 132
MACRUM 19:999d13f83602 133 mma7660.readData(acc);
MACRUM 19:999d13f83602 134 for(int i=0; i < NUM_AXIS; i++) {
MACRUM 19:999d13f83602 135 snprintf(buf, buf_size, "%f", acc[i]);
MACRUM 19:999d13f83602 136 accel_res[i]->set_value(buf);
MACRUM 19:999d13f83602 137 }
MACRUM 19:999d13f83602 138 printf("acc: %f,%f,%f\n", acc[0], acc[1], acc[2]);
MACRUM 19:999d13f83602 139
MACRUM 19:999d13f83602 140 temperature = lm75b.read();
MACRUM 19:999d13f83602 141 snprintf(buf, buf_size, "%f", temperature);
MACRUM 19:999d13f83602 142 temp_res->set_value(buf);
MACRUM 19:999d13f83602 143 printf("temp: %s\n", buf);
MACRUM 19:999d13f83602 144 }
MACRUM 19:999d13f83602 145
maclobdell 11:ae1f6fe932dc 146 /**
maclobdell 11:ae1f6fe932dc 147 * Registration callback handler
maclobdell 11:ae1f6fe932dc 148 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
maclobdell 11:ae1f6fe932dc 149 */
MACRUM 19:999d13f83602 150 void registered(const ConnectorClientEndpointInfo *endpoint)
MACRUM 19:999d13f83602 151 {
maclobdell 11:ae1f6fe932dc 152 printf("Connected to Mbed Cloud. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
maclobdell 11:ae1f6fe932dc 153 }
maclobdell 11:ae1f6fe932dc 154
MACRUM 19:999d13f83602 155 int main(void)
MACRUM 19:999d13f83602 156 {
maclobdell 11:ae1f6fe932dc 157 printf("Starting Simple Mbed Cloud Client example\n");
MACRUM 18:139960a75894 158 printf("Connecting to the network using Wi-Fi...\n");
maclobdell 11:ae1f6fe932dc 159
maclobdell 11:ae1f6fe932dc 160 // Connect to the internet (DHCP is expected to be on)
MACRUM 18:139960a75894 161 nsapi_error_t status = net.connect(WIFI_SSID, WIFI_PSWD, NSAPI_SECURITY_WPA_WPA2);
maclobdell 11:ae1f6fe932dc 162
maclobdell 11:ae1f6fe932dc 163 if (status != 0) {
maclobdell 11:ae1f6fe932dc 164 printf("Connecting to the network failed %d!\n", status);
maclobdell 11:ae1f6fe932dc 165 return -1;
maclobdell 11:ae1f6fe932dc 166 }
maclobdell 11:ae1f6fe932dc 167
maclobdell 11:ae1f6fe932dc 168 printf("Connected to the network successfully. IP address: %s\n", net.get_ip_address());
maclobdell 11:ae1f6fe932dc 169
maclobdell 11:ae1f6fe932dc 170 // SimpleMbedCloudClient handles registering over LwM2M to Mbed Cloud
maclobdell 11:ae1f6fe932dc 171 SimpleMbedCloudClient client(&net, &sd, &fs);
maclobdell 11:ae1f6fe932dc 172 int client_status = client.init();
maclobdell 11:ae1f6fe932dc 173 if (client_status != 0) {
maclobdell 11:ae1f6fe932dc 174 printf("Initializing Mbed Cloud Client failed (%d)\n", client_status);
maclobdell 11:ae1f6fe932dc 175 return -1;
maclobdell 11:ae1f6fe932dc 176 }
maclobdell 11:ae1f6fe932dc 177
maclobdell 11:ae1f6fe932dc 178 // Creating resources, which can be written or read from the cloud
maclobdell 11:ae1f6fe932dc 179 button_res = client.create_resource("3200/0/5501", "button_count");
maclobdell 11:ae1f6fe932dc 180 button_res->set_value(0);
maclobdell 11:ae1f6fe932dc 181 button_res->methods(M2MMethod::GET);
maclobdell 11:ae1f6fe932dc 182 button_res->observable(true);
maclobdell 11:ae1f6fe932dc 183 button_res->attach_notification_callback(button_callback);
maclobdell 11:ae1f6fe932dc 184
maclobdell 11:ae1f6fe932dc 185 pattern_res = client.create_resource("3201/0/5853", "blink_pattern");
maclobdell 11:ae1f6fe932dc 186 pattern_res->set_value("500:500:500:500:500:500:500:500");
maclobdell 11:ae1f6fe932dc 187 pattern_res->methods(M2MMethod::GET | M2MMethod::PUT);
maclobdell 11:ae1f6fe932dc 188 pattern_res->attach_put_callback(pattern_updated);
maclobdell 11:ae1f6fe932dc 189
maclobdell 11:ae1f6fe932dc 190 MbedCloudClientResource *blink_res = client.create_resource("3201/0/5850", "blink_action");
maclobdell 11:ae1f6fe932dc 191 blink_res->methods(M2MMethod::POST);
maclobdell 11:ae1f6fe932dc 192 blink_res->attach_post_callback(blink_callback);
MACRUM 19:999d13f83602 193
MACRUM 19:999d13f83602 194 temp_res = client.create_resource("3303/0/5700", "temperature");
MACRUM 19:999d13f83602 195 temp_res->set_value("0");
MACRUM 19:999d13f83602 196 temp_res->methods(M2MMethod::GET);
MACRUM 19:999d13f83602 197 temp_res->attach_notification_callback(temp_callback);
MACRUM 19:999d13f83602 198 temp_res->observable(true);
maclobdell 11:ae1f6fe932dc 199
MACRUM 19:999d13f83602 200 temp_unit_res = client.create_resource("3303/0/5701", "unit");
MACRUM 19:999d13f83602 201 temp_unit_res->set_value("Cel");
MACRUM 19:999d13f83602 202
MACRUM 19:999d13f83602 203 accel_res[0] = client.create_resource("3313/0/5702", "accel_x");
MACRUM 19:999d13f83602 204 accel_res[1] = client.create_resource("3313/0/5703", "accel_y");
MACRUM 19:999d13f83602 205 accel_res[2] = client.create_resource("3313/0/5704", "accel_z");
MACRUM 19:999d13f83602 206
MACRUM 19:999d13f83602 207 for (int i=0; i < NUM_AXIS; i++) {
MACRUM 19:999d13f83602 208 accel_res[i]->set_value(0);
MACRUM 19:999d13f83602 209 accel_res[i]->methods(M2MMethod::GET);
MACRUM 19:999d13f83602 210 accel_res[i]->attach_notification_callback(accel_callback);
MACRUM 19:999d13f83602 211 accel_res[i]->observable(true);
MACRUM 19:999d13f83602 212 }
MACRUM 19:999d13f83602 213
MACRUM 19:999d13f83602 214 acc_unit_res = client.create_resource("3313/0/5701", "unit");
MACRUM 19:999d13f83602 215 acc_unit_res->set_value("G");
MACRUM 19:999d13f83602 216
maclobdell 11:ae1f6fe932dc 217 printf("Initialized Mbed Cloud Client. Registering...\n");
maclobdell 11:ae1f6fe932dc 218
maclobdell 11:ae1f6fe932dc 219 // Callback that fires when registering is complete
maclobdell 11:ae1f6fe932dc 220 client.on_registered(&registered);
maclobdell 11:ae1f6fe932dc 221
maclobdell 11:ae1f6fe932dc 222 // Register with Mbed Cloud
maclobdell 11:ae1f6fe932dc 223 client.register_and_connect();
maclobdell 11:ae1f6fe932dc 224
MACRUM 19:999d13f83602 225 // Setup the button
MACRUM 19:999d13f83602 226 sw2.mode(PullUp);
MACRUM 19:999d13f83602 227
maclobdell 11:ae1f6fe932dc 228 // The button fall handler is placed in the event queue so it will run in
MACRUM 19:999d13f83602 229 // thread context instead of ISR context, which allows safely updating the cloud resource
MACRUM 19:999d13f83602 230 sw2.fall(eventQueue.event(&button_press));
MACRUM 19:999d13f83602 231 button_count = 0;
MACRUM 19:999d13f83602 232
MACRUM 19:999d13f83602 233 // Placeholder for callback to update local resource when GET comes.
MACRUM 19:999d13f83602 234 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
MACRUM 19:999d13f83602 235 Ticker timer;
MACRUM 19:999d13f83602 236 timer.attach(eventQueue.event(&measure_sensors), 5.0);
maclobdell 11:ae1f6fe932dc 237
maclobdell 11:ae1f6fe932dc 238 // Start the event queue in a separate thread so the main thread continues
maclobdell 11:ae1f6fe932dc 239 thread1.start(callback(&eventQueue, &EventQueue::dispatch_forever));
maclobdell 11:ae1f6fe932dc 240
MACRUM 19:999d13f83602 241 while(1) {
maclobdell 11:ae1f6fe932dc 242 wait_ms(100);
maclobdell 11:ae1f6fe932dc 243
maclobdell 11:ae1f6fe932dc 244 if (button_pressed) {
maclobdell 11:ae1f6fe932dc 245 button_pressed = false;
MACRUM 19:999d13f83602 246 printf("button clicked %d times\r\n", button_count);
maclobdell 11:ae1f6fe932dc 247 }
MACRUM 19:999d13f83602 248
maclobdell 11:ae1f6fe932dc 249 }
maclobdell 11:ae1f6fe932dc 250 }