main.cpp

00001 // ----------------------------------------------------------------------------
00002 // Copyright 2016-2018 ARM Ltd.
00003 //
00004 // SPDX-License-Identifier: Apache-2.0
00005 //
00006 // Licensed under the Apache License, Version 2.0 (the "License");
00007 // you may not use this file except in compliance with the License.
00008 // You may obtain a copy of the License at
00009 //
00010 //     http://www.apache.org/licenses/LICENSE-2.0
00011 //
00012 // Unless required by applicable law or agreed to in writing, software
00013 // distributed under the License is distributed on an "AS IS" BASIS,
00014 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00015 // See the License for the specific language governing permissions and
00016 // limitations under the License.
00017 // ----------------------------------------------------------------------------
00018 #ifndef MBED_TEST_MODE
00019 
00020 #include "mbed.h"
00021 #include "simple-mbed-cloud-client.h"
00022 #include "LittleFileSystem.h"
00023 
00024 // Default network interface object. Don't forget to change the WiFi SSID/password in mbed_app.json if you're using WiFi.
00025 NetworkInterface *net;
00026 
00027 // Default block device available on the target board
00028 BlockDevice* bd = BlockDevice::get_default_instance();
00029 SlicingBlockDevice sd(bd, 0, 2*1024*1024);
00030 
00031 #if COMPONENT_SD || COMPONENT_NUSD
00032 // Use FATFileSystem for SD card type blockdevices
00033 FATFileSystem fs("fs");
00034 #else
00035 // Use LittleFileSystem for non-SD block devices to enable wear leveling and other functions
00036 LittleFileSystem fs("fs");
00037 #endif
00038 
00039 // Default User button for GET example and for resetting the storage
00040 InterruptIn button(BUTTON1);
00041 // Default LED to use for PUT/POST example
00042 DigitalOut DoorActivate(PD_3, 0);
00043 
00044 // How often to fetch sensor data (in seconds)
00045 #define SENSORS_POLL_INTERVAL 15.0
00046 int dflag = 1;
00047 // Sensors related includes and initialization
00048 #include "HTS221Sensor.h"
00049 #include "LPS22HBSensor.h"
00050 #include "VL53L0X.h"
00051 
00052 static DevI2C devI2c(PB_11,PB_10);
00053 static HTS221Sensor sen_hum_temp(&devI2c);
00054 static LPS22HBSensor sen_press_temp(&devI2c);
00055 
00056 static DigitalOut shutdown_pin(PC_6);
00057 static VL53L0X sen_distance(&devI2c, &shutdown_pin, PC_7);
00058 
00059 // Declaring pointers for access to Pelion Client resources outside of main()
00060 MbedCloudClientResource *res_button;
00061 MbedCloudClientResource *DoorControl;
00062 
00063 
00064 // Additional resources for sensor readings
00065 
00066 MbedCloudClientResource *res_humidity;
00067 MbedCloudClientResource *res_temperature;
00068 MbedCloudClientResource *res_pressure;
00069 MbedCloudClientResource *res_distance;
00070 
00071 // define your personal password
00072 #define DoorPassword "MyPassword"
00073 
00074     char DoorCode[32];
00075     DigitalOut ConnectTrue(LED1);
00076     DigitalOut CodeError(LED2);
00077     int ErrorCount = 0;
00078     int ErrorLockoutTime = 0;
00079     
00080 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
00081 // 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
00082 EventQueue eventQueue;
00083 
00084 // When the device is registered, this variable will be used to access various useful information, like device ID etc.
00085 static const ConnectorClientEndpointInfo* endpointInfo;
00086 
00087 /**
00088  * PUT handler
00089  * @param resource The resource that triggered the callback
00090  * @param newValue Updated value for the resource
00091  */
00092 void put_callback(MbedCloudClientResource *resource, m2m::String newValue) {
00093 
00094     if(ErrorLockoutTime != 0) { /* Ignore password attempts while locked */
00095         printf("Password Lockout!\r\n");
00096         return;
00097         }
00098     printf("*** PUT received, new value: %s                             \n", newValue.c_str());
00099     strcpy(DoorCode, newValue.c_str());
00100     printf("%s\r\n", DoorCode);
00101     if(!strcmp(DoorCode, DoorPassword )) {
00102         DoorActivate = 1; /* Activate relay for 1500ms */
00103         wait_ms(1500);
00104         DoorActivate = 0;
00105         DoorCode[0] = NULL;
00106         // clear password error data
00107         ErrorCount = 0;
00108         ErrorLockoutTime = 0;
00109         } else { /* bad password attempt */
00110         DoorCode[0] = NULL;
00111         ErrorCount++;
00112         if(ErrorCount >= 3) { /* If password submitted is wring lockout the remote control on the third error */
00113             ErrorLockoutTime = (ErrorCount - 2) * 2; /* Double the lockout time after every failed password */
00114             CodeError = 1; /* Indicate lockout on LED */
00115             printf("PasswordLocked %d Minutes\r\n", ErrorLockoutTime);
00116             }
00117         }
00118             
00119         
00120 }
00121 
00122 
00123 
00124 /**
00125  * Button function triggered by the physical button press.
00126  */
00127 void button_press() {
00128     int v = res_button->get_value_int() + 1;
00129     res_button->set_value(v);
00130     printf("*** Button clicked %d times                                 \n", v);
00131 }
00132 
00133 /**
00134  * Notification callback handler
00135  * @param resource The resource that triggered the callback
00136  * @param status The delivery status of the notification
00137  */
00138 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
00139     printf("*** Button notification, status %s (%d)                     \n", MbedCloudClientResource::delivery_status_to_string(status), status);
00140 }
00141 
00142 /**
00143  * Registration callback handler
00144  * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
00145  */
00146 void registered(const ConnectorClientEndpointInfo *endpoint) {
00147     printf("Registered to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
00148     endpointInfo = endpoint;
00149 }
00150 
00151 /**
00152  * Initialize sensors
00153  */
00154 void sensors_init() {
00155     uint8_t id1, id2;
00156 
00157     printf ("\nSensors configuration:\n");
00158     // Initialize sensors
00159     sen_hum_temp.init(NULL);
00160     sen_press_temp.init(NULL);
00161     sen_distance.init_sensor(VL53L0X_DEFAULT_ADDRESS);
00162 
00163     /// Call sensors enable routines
00164     sen_hum_temp.enable();
00165     sen_press_temp.enable();
00166 
00167 
00168     sen_hum_temp.read_id(&id1);
00169     sen_press_temp.read_id(&id2);
00170 
00171     printf("HTS221  humidity & temperature    = 0x%X\n", id1);
00172     printf("LPS22HB pressure & temperature    = 0x%X\n", id2);
00173 
00174     printf("\n"); ;
00175 }
00176 
00177 /**
00178  * Update sensors and report their values.
00179  * This function is called periodically.
00180  */
00181 void sensors_update() {
00182     float temp1_value, humid_value, pressure_value;
00183     uint32_t distance_value, distance_reading;
00184 
00185     if(!dflag++) { /* Only update the sensors once a minute */
00186         sen_hum_temp.get_humidity(&humid_value);
00187         sen_hum_temp.get_temperature(&temp1_value);
00188         sen_press_temp.get_pressure(&pressure_value);
00189         res_humidity->set_value(humid_value);
00190         res_temperature->set_value(temp1_value);
00191         res_pressure->set_value(pressure_value);
00192         if(ErrorLockoutTime != 0) {
00193             ErrorLockoutTime--;
00194             if(ErrorLockoutTime == 0) {
00195                 printf("Unlocked\r\n");
00196                 CodeError = 0;
00197                 }
00198             }
00199         }
00200     if(dflag > 3) dflag = 0;
00201     distance_reading = sen_distance.get_distance(&distance_value);
00202 
00203 
00204     if (distance_reading == VL53L0X_ERROR_NONE) {
00205 //        printf("VL53L0X dist: %7ld mm\n", distance_value);
00206         res_distance->set_value((int)distance_value);
00207     } else {
00208 //        printf("VL53L0X dist:        --       \n");
00209         distance_value = 1999;
00210         res_distance->set_value((int)distance_value);
00211     }
00212 }
00213 
00214 int main(void) {
00215     printf("\nStarting Simple Pelion Device Management Client example\n");
00216     ConnectTrue = 0;
00217     CodeError = 0;
00218     DoorActivate = 0;
00219     int storage_status = fs.mount(&sd);
00220     if (storage_status != 0) {
00221         printf("Storage mounting failed.\n");
00222     }
00223     // If the User button is pressed ons start, then format storage.
00224     bool btn_pressed = (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE);
00225     if (btn_pressed) {
00226         printf("User button is pushed on start...\n");
00227     }
00228 
00229     if (storage_status || btn_pressed) {
00230         printf("Formatting the storage...\n");
00231         int storage_status = StorageHelper::format(&fs, &sd);
00232         if (storage_status != 0) {
00233             printf("ERROR: Failed to reformat the storage (%d).\n", storage_status);
00234         }
00235     } else {
00236         printf("You can hold the user button during boot to format the storage and change the device identity.\n");
00237     }
00238 
00239     sensors_init();
00240 
00241     // Connect to the internet (DHCP is expected to be on)
00242     printf("Connecting to the network using Wifi...\n");
00243     net = NetworkInterface::get_default_instance();
00244 
00245     nsapi_error_t net_status = -1;
00246     for (int tries = 0; tries < 3; tries++) {
00247         net_status = net->connect();
00248         if (net_status == NSAPI_ERROR_OK) {
00249             break;
00250         } else {
00251             printf("Unable to connect to network. Retrying...\n");
00252         }
00253     }
00254 
00255     if (net_status != NSAPI_ERROR_OK) {
00256         printf("ERROR: Connecting to the network failed (%d)!\n", net_status);
00257         return -1;
00258     }
00259 
00260     printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address());
00261 
00262     printf("Initializing Pelion Device Management Client...\n");
00263 
00264     // SimpleMbedCloudClient handles registering over LwM2M to Pelion DM
00265     SimpleMbedCloudClient client(net, bd, &fs);
00266     int client_status = client.init();
00267     if (client_status != 0) {
00268         printf("ERROR: Pelion Client initialization failed (%d)\n", client_status);
00269         return -1;
00270     }
00271 
00272     // Creating resources, which can be written or read from the cloud
00273     res_button = client.create_resource("3200/0/5501", "Button Count");
00274     res_button->set_value(0);
00275     res_button->methods(M2MMethod::GET);
00276     res_button->observable(true);
00277     //res_button->max_age(6000);
00278     res_button->attach_notification_callback(button_callback);
00279 
00280     DoorControl = client.create_resource("3201/0/5853", "Door Control");
00281     DoorControl->set_value(1);
00282     DoorControl->methods(M2MMethod::GET | M2MMethod::PUT);
00283     DoorControl->attach_put_callback(put_callback);
00284 
00285     // Sensor resources
00286     res_temperature = client.create_resource("3303/0/5700", "Temperature HTS221 (C)");
00287     res_temperature->set_value(0);
00288     res_temperature->methods(M2MMethod::GET);
00289     res_temperature->observable(true);
00290 
00291     res_humidity = client.create_resource("3304/0/5700", "Humidity");
00292     res_humidity->set_value(0);
00293     res_humidity->methods(M2MMethod::GET);
00294     res_humidity->observable(true);
00295 
00296     res_pressure = client.create_resource("3323/0/5700", "Pressure");
00297     res_pressure->set_value(0);
00298     res_pressure->methods(M2MMethod::GET);
00299     res_pressure->observable(true);
00300 
00301     res_distance = client.create_resource("3330/0/5700", "Distance");
00302     res_distance->set_value((float)999.9);
00303     res_distance->methods(M2MMethod::GET);
00304     res_distance->observable(true);
00305 
00306     printf("Initialized Pelion Client. Registering...\n");
00307 
00308     // Callback that fires when registering is complete
00309     client.on_registered(&registered);
00310 
00311     // Register with Pelion DM
00312     client.register_and_connect();
00313 
00314     int i = 6000; // wait up 600 seconds before attaching sensors and button events
00315     while (i-- > 0 && !client.is_client_registered()) {
00316         wait_ms(100);
00317     }
00318     ConnectTrue = 1;
00319     button.fall(eventQueue.event(&button_press));
00320     res_button->set_value(0);
00321     sensors_update();
00322     // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
00323     Ticker timer;
00324     timer.attach(eventQueue.event(&sensors_update), SENSORS_POLL_INTERVAL);
00325 
00326     // You can easily run the eventQueue in a separate thread if required
00327     eventQueue.dispatch_forever();
00328 }
00329 
00330 #endif