Mbed OS and Pelion Device Management example over WIFI for DISCO_L475VG_IOT01 board

Dependencies:   X_NUCLEO_COMMON ST_INTERFACES

DEPRECATED

This example application is not maintained and not recommended. It uses an old version of Mbed OS, Pelion DM and Arm toolchain. It doesn't work with Mbed Studio.

Please use: https://os.mbed.com/teams/mbed-os-examples/code/mbed-os-example-pelion/

This example is known to work on the following platforms:

DISCO_L475E_IOT01A

Follow the Quick-Start instructions: https://cloud.mbed.com/quick-start

Example functionality

This example showcases the following device functionality:

  • Read onboard temperature and humidity sensors, and report them as Pelion LWM2M resources (see image below).
  • On user button click, increment Pelion LWM2M button resource.
  • Allow the user to change the state of the board LED from Pelion LWM2M led_state resource and PUT request.
  • Uses all onboard sensors and reports them as Pelion LWM2M resources.

/media/uploads/screamer/pelion_st_humidity_reading.png?v=2

Use this example with Mbed CLI

1. Import the application into your desktop:

mbed import https://os.mbed.com/teams/ST/code/pelion-example-disco-iot01

cd pelion-example-disco-iot01

2. Install the CLOUD_SDK_API_KEY

mbed config -G CLOUD_SDK_API_KEY <PELION_DM_API_KEY>

For instructions on how to generate your API key, please see the documentation.

3. Initialize firmware credentials (done once per repository). You can use the following command:

mbed dm init -d "<your company name in Pelion DM>" --model-name "<product model identifier>" -q --force

If above command do not work for your Mbed CLI, please consider upgrading Mbed CLI to version 1.8.x or above.

4. Compile and program:

mbed compile -t <toolchain> -m DISCO_L475VG_IOT01A

(supported toolchains : GCC_ARM / ARM / IAR)

5. You can connect on a virtual terminal/COM port to the platform using:

mbed sterm -b 115200

This should give you an output similar to:

[BOOT] Mbed Bootloader
[BOOT] ARM: 00000000000000000000
[BOOT] OEM: 00000000000000000000
[BOOT] Layout: 0 80096F4
[BOOT] Active firmware integrity check:
[BOOT] SHA256: 0660E360D432225D5251461998FD8617B017098C5F1F90D5FB607BF8C27ED530
[BOOT] Version: 1553615309
[BOOT] Slot 0 is empty
[BOOT] Active firmware up-to-date
[BOOT] Application's start address: 0x8010400
[BOOT] Application's jump address: 0x8011041
[BOOT] Application's stack address: 0x20018000
[BOOT] Forwarding to application...

Starting Simple Pelion Device Management Client example
You can hold the user button during boot to format the storage and change the device identity.

Sensors configuration:
Invalid new address!
HTS221  humidity & temperature    = 0xBC
LPS22HB pressure & temperature    = 0xB1
LIS3MDL magnetometer              = 0x3D
LSM6DSL accelerometer & gyroscope = 0x6A

Connecting to the network using Wifi...
Connected to the network successfully. IP address: 192.168.1.3
Initializing Pelion Device Management Client...
Initialized Pelion Client. Registering...
Registered to Pelion Device Management. Endpoint Name: 0169********************001002d5

ADC temp:     23.0037 C,  vref:      0.3661 V
HTS221 temp:   28.700 C,  humidity:   31.90 %
LPS22HB temp:  29.600 C,  pressure: 1032.01 mbar
LIS3MDL mag:    0.217 x,  -0.284 y,  -0.053 z [gauss]
LSM6DSL acc:    0.005 x,  -0.014 y,   1.029 z [g]
LSM6DSL gyro:   0.910 x,  -0.910 y,   1.120 z [dps]
VL53L0X dist:    1855 mm
Revision:
12:1f1a50e973db
Parent:
11:8df4529f060d
Child:
13:42b49a0caade
--- a/main.cpp	Mon Dec 10 10:42:29 2018 +0000
+++ b/main.cpp	Mon Dec 10 17:19:20 2018 +0000
@@ -29,12 +29,12 @@
 // #include "VL53L0X.h"
 
 static DevI2C devI2c(PB_11,PB_10);
-static HTS221Sensor hum_temp(&devI2c);
-static LPS22HBSensor press_temp(&devI2c);
-static LSM6DSLSensor acc_gyro(&devI2c,LSM6DSL_ACC_GYRO_I2C_ADDRESS_LOW,PD_11); // low address
-static LIS3MDL magnetometer(&devI2c);
+static HTS221Sensor sen_hum_temp(&devI2c);
+static LPS22HBSensor sen_press_temp(&devI2c);
+static LSM6DSLSensor sen_acc_gyro(&devI2c,LSM6DSL_ACC_GYRO_I2C_ADDRESS_LOW,PD_11); // low address
+static LIS3MDL sen_mag(&devI2c);
 static DigitalOut shutdown_pin(PC_6);
-// static VL53L0X range(&devI2c, &shutdown_pin, PC_7);
+// static VL53L0X sen_distance(&devI2c, &shutdown_pin, PC_7);
 
 InterruptIn button(USER_BUTTON);
 #define SENSORS_POLL_INTERVAL 1.0
@@ -56,14 +56,19 @@
 DigitalOut led(LED1);
 
 // Declaring pointers for access to Pelion Client resources outside of main()
-MbedCloudClientResource *button_res;
-MbedCloudClientResource *led_res;
+MbedCloudClientResource *res_button;
+MbedCloudClientResource *res_led;
 
+// Additional resources for sensor readings
+MbedCloudClientResource *res_humidity;
+MbedCloudClientResource *res_temperature;
 #ifdef SENSORS_AND_BUTTONS
-// Additional resources for sensor readings
-MbedCloudClientResource *humidity_res;
-MbedCloudClientResource *temperature_res;
-MbedCloudClientResource *distance_res;
+MbedCloudClientResource *res_pressure;
+MbedCloudClientResource *res_temperature2;
+MbedCloudClientResource *res_magnometer;
+MbedCloudClientResource *res_accelerometer;
+MbedCloudClientResource *res_gyroscope;
+MbedCloudClientResource *res_distance;
 #endif /* SENSORS_AND_BUTTONS */
 
 // When the device is registered, this variable will be used to access various useful information, like device ID etc.
@@ -87,16 +92,16 @@
  * @param size Size of the body
  */
 void led_post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
-    printf("POST received. Going to blink LED pattern: %s\n", led_res->get_value().c_str());
-    led = atoi(led_res->get_value().c_str());
+    printf("POST received. Going to blink LED pattern: %s\n", res_led->get_value().c_str());
+    led = atoi(res_led->get_value().c_str());
 }
 
 /**
  * Button function triggered by the physical button press or by timer depending on SENSORS_AND_BUTTONS macro.
  */
 void button_press() {
-    int v = button_res->get_value_int() + 1;
-    button_res->set_value(v);
+    int v = res_button->get_value_int() + 1;
+    res_button->set_value(v);
     printf("Button clicked %d times\n", v);
 }
 
@@ -126,32 +131,32 @@
     uint8_t id;
 
     // Initialize sensors
-    hum_temp.init(NULL);
-    press_temp.init(NULL);
-    acc_gyro.init(NULL);
-    magnetometer.init(NULL);
+    sen_hum_temp.init(NULL);
+    sen_press_temp.init(NULL);
+    sen_acc_gyro.init(NULL);
+    sen_mag.init(NULL);
     // range.init_sensor(VL53L0X_DEFAULT_ADDRESS);
 
     /// Call sensors enable routines
-    hum_temp.enable();
-    press_temp.enable();
-    //magnetometer.enable();
-    acc_gyro.enable_x();
-    acc_gyro.enable_g();
+    sen_hum_temp.enable();
+    sen_press_temp.enable();
+    //sen_mag.enable();
+    sen_acc_gyro.enable_x();
+    sen_acc_gyro.enable_g();
 
     printf("\033[2J\033[20A");
-    printf ("\r\n--- Sensors configuration ---\r\n\r\n");
+    printf ("\r\nSensors configuration:\r\n");
 
-    hum_temp.read_id(&id);
+    sen_hum_temp.read_id(&id);
     printf("HTS221  humidity & temperature    = 0x%X\r\n", id);
-    press_temp.read_id(&id);
+    sen_press_temp.read_id(&id);
     printf("LPS22HB pressure & temperature    = 0x%X\r\n", id);
-    magnetometer.read_id(&id);
+    sen_mag.read_id(&id);
     printf("LIS3MDL magnetometer              = 0x%X\r\n", id);
-    acc_gyro.read_id(&id);
+    sen_acc_gyro.read_id(&id);
     printf("LSM6DSL accelerometer & gyroscope = 0x%X\r\n", id);
 
-    printf("\n\r--- Reading sensor values ---\n\r"); ;
+    printf("\r\n"); ;
 }
 
 /**
@@ -159,44 +164,43 @@
  * This function is called periodically.
  */
 void sensors_update() {
-    float value1, value2;
+    float fval1, fval2;
     int32_t axes[3];
-    uint32_t distance;
+    uint32_t uval;
 
     printf("\r\n");
 
-    value1 = value2 = 0.0;
-    hum_temp.get_temperature(&value1);
-    hum_temp.get_humidity(&value2);
+    fval1 = fval2 = 0.0;
+    sen_hum_temp.get_temperature(&fval1);
+    sen_hum_temp.get_humidity(&fval2);
     if (endpointInfo) {
-        temperature_res->set_value(value1);
-        humidity_res->set_value(value2);
+        res_temperature->set_value(fval1);
+        res_humidity->set_value(fval2);
     }
-    printf("HTS221:  [temp] %.2f C, [hum]   %.2f%%\r\n", value1, value2);
+    printf("HTS221 temp:  %7.2f C,  humidity: %7.2f %%\r\n", fval1, fval2);
 
-    value1 = value2 = 0.0;
-    press_temp.get_temperature(&value1);
-    // press_temp.get_pressure(&value2);
-    printf("LPS22HB: [temp] %.2f C, [press] %.2f mbar\r\n", value1, value2);
-    printf("Mag/Acc/Gyro readings:        x,      y,      z\r\n");
+    fval1 = fval2 = 0.0;
+    sen_press_temp.get_temperature(&fval1);
+    sen_press_temp.get_pressure(&fval2);
+    printf("LPS22HB temp: %7.2f C,  pressure: %7.2f mbar      \r\n", fval1, fval2);
 
-    magnetometer.get_m_axes(axes);
-    printf("LIS3MDL [mag/mgauss]:    %6ld, %6ld, %6ld\r\n", axes[0], axes[1], axes[2]);
-    acc_gyro.get_x_axes(axes);
-    printf("LSM6DSL [acc/mg]:        %6ld, %6ld, %6ld\r\n", axes[0], axes[1], axes[2]);
-    acc_gyro.get_g_axes(axes);
-    printf("LSM6DSL [gyro/mdps]:     %6ld, %6ld, %6ld\r\n", axes[0], axes[1], axes[2]);
+    sen_mag.get_m_axes(axes);
+    printf("LIS3MDL mag:  %7ld x, %7ld y, %7ld z [mgauss]      \r\n", axes[0], axes[1], axes[2]);
+    sen_acc_gyro.get_x_axes(axes);
+    printf("LSM6DSL acc:  %7ld x, %7ld y, %7ld z [mg]       \r\n", axes[0], axes[1], axes[2]);
+    sen_acc_gyro.get_g_axes(axes);
+    printf("LSM6DSL gyro: %7ld x, %7ld y, %7ld z [mdps]      \r\n", axes[0], axes[1], axes[2]);
 
-    // if (range.get_distance(&distance) == VL53L0X_ERROR_NONE) {
-    //     printf("VL53L0X [mm]:            %6ld\r\n", distance);
+    // if (range.get_distance(&uval) == VL53L0X_ERROR_NONE) {
+    //     printf("VL53L0X [mm]:            %6ld\r\n", uval);
     //     if (endpointInfo) {
-    //         distance_res->set_value((int)distance);
+    //         res_distance->set_value((int)uval);
     //     }
     // } else {
     //     printf("VL53L0X [mm]:                --\r\n");
     // }
 
-    printf("\033[7A");
+    printf("\033[6A");
 }
 #endif /* SENSORS_AND_BUTTONS */
 
@@ -257,34 +261,34 @@
     }
 
     // Creating resources, which can be written or read from the cloud
-    button_res = client.create_resource("3200/0/5501", "button_count");
-    button_res->set_value(0);
-    button_res->methods(M2MMethod::GET);
-    button_res->observable(true);
-    button_res->attach_notification_callback(button_callback);
+    res_button = client.create_resource("3200/0/5501", "button_count");
+    res_button->set_value(0);
+    res_button->methods(M2MMethod::GET);
+    res_button->observable(true);
+    res_button->attach_notification_callback(button_callback);
 
 #ifdef SENSORS_AND_BUTTONS
     // Sensor resources
-    temperature_res = client.create_resource("3303/0/5700", "temperature");
-    temperature_res->set_value(0);
-    temperature_res->methods(M2MMethod::GET);
-    temperature_res->observable(true);
+    res_temperature = client.create_resource("3303/0/5700", "temperature");
+    res_temperature->set_value(0);
+    res_temperature->methods(M2MMethod::GET);
+    res_temperature->observable(true);
 
-    humidity_res = client.create_resource("3304/0/5700", "humidity");
-    humidity_res->set_value(0);
-    humidity_res->methods(M2MMethod::GET);
-    humidity_res->observable(true);
+    res_humidity = client.create_resource("3304/0/5700", "humidity");
+    res_humidity->set_value(0);
+    res_humidity->methods(M2MMethod::GET);
+    res_humidity->observable(true);
 
-    // distance_res = client.create_resource("3330/0/5700", "distance");
-    // distance_res->set_value(0);
-    // distance_res->methods(M2MMethod::GET);
-    // distance_res->observable(true);
+    // res_distance = client.create_resource("3330/0/5700", "distance");
+    // res_distance->set_value(0);
+    // res_distance->methods(M2MMethod::GET);
+    // res_distance->observable(true);
 #endif /* SENSORS_AND_BUTTONS */
 
-    // led_res = client.create_resource("3201/0/5853", "led_state");
-    // led_res->set_value(1);
-    // led_res->methods(M2MMethod::GET | M2MMethod::PUT);
-    // led_res->attach_put_callback(led_put_callback);
+    // res_led = client.create_resource("3201/0/5853", "led_state");
+    // res_led->set_value(1);
+    // res_led->methods(M2MMethod::GET | M2MMethod::PUT);
+    // res_led->attach_put_callback(led_put_callback);
 
     printf("Initialized Pelion Client. Registering...\n");
 
@@ -294,6 +298,11 @@
     // Register with Pelion DM
     client.register_and_connect();
 
+    int i = 600; // wait 60 seconds
+    while (i-- > 0 && !client.is_client_registered()) {
+        wait_ms(100);
+    }
+
     // Placeholder for callback to update local resource when GET comes.
     // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
 #ifdef SENSORS_AND_BUTTONS