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:
28:0e774865873d
Parent:
20:a9aab92d378b
Child:
29:6ff737b67e7d
--- a/main.cpp	Tue Dec 18 23:51:31 2018 +0000
+++ b/main.cpp	Mon Mar 04 22:11:02 2019 +0000
@@ -15,7 +15,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // ----------------------------------------------------------------------------
+
 #ifndef MBED_TEST_MODE
+
 #include "mbed.h"
 #include "simple-mbed-cloud-client.h"
 #include "LittleFileSystem.h"
@@ -23,18 +25,18 @@
 #include "LPS22HBSensor.h"
 #include "LSM6DSLSensor.h"
 #include "lis3mdl_class.h"
-// #include "VL53L0X.h"
+#include "VL53L0X.h"
 
 static DevI2C devI2c(PB_11,PB_10);
 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 sen_distance(&devI2c, &shutdown_pin, PC_7);
+static DigitalOut shutdown_pin(PC_6);
+static VL53L0X sen_distance(&devI2c, &shutdown_pin, PC_7);
 
 #define SENSORS_POLL_INTERVAL 1.0
-//#define SEND_ALL_SENSORS
+#define SEND_ALL_SENSORS
 
 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
 // 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
@@ -57,18 +59,31 @@
 MbedCloudClientResource *res_button;
 MbedCloudClientResource *res_led;
 
+#ifdef SEND_ALL_SENSORS
+// Temperature reading from microcontroller
+AnalogIn adc_temp(ADC_TEMP);
+// Voltage reference reading from microcontroller
+AnalogIn adc_vref(ADC_VREF);
+#endif
+
 // Additional resources for sensor readings
 MbedCloudClientResource *res_humidity;
 MbedCloudClientResource *res_temperature;
 #ifdef SEND_ALL_SENSORS
 MbedCloudClientResource *res_pressure;
 MbedCloudClientResource *res_temperature2;
-MbedCloudClientResource *res_magnometer;
-MbedCloudClientResource *res_accelerometer;
+MbedCloudClientResource *res_magnometer_x;
+MbedCloudClientResource *res_magnometer_y;
+MbedCloudClientResource *res_magnometer_z;
+MbedCloudClientResource *res_accelerometer_x;
+MbedCloudClientResource *res_accelerometer_y;
+MbedCloudClientResource *res_accelerometer_z;
 MbedCloudClientResource *res_gyroscope_x;
 MbedCloudClientResource *res_gyroscope_y;
 MbedCloudClientResource *res_gyroscope_z;
 MbedCloudClientResource *res_distance;
+MbedCloudClientResource *res_adc_temp;
+MbedCloudClientResource *res_adc_voltage;
 #endif /* SEND_ALL_SENSORS */
 
 // When the device is registered, this variable will be used to access various useful information, like device ID etc.
@@ -102,7 +117,7 @@
 void button_press() {
     int v = res_button->get_value_int() + 1;
     res_button->set_value(v);
-    printf("Button clicked %d times\n", v);
+    printf("Button clicked %d times                                \n", v);
 }
 
 /**
@@ -134,7 +149,7 @@
     sen_press_temp.init(NULL);
     sen_acc_gyro.init(NULL);
     sen_mag.init(NULL);
-    // sen_distance.init_sensor(VL53L0X_DEFAULT_ADDRESS);
+    sen_distance.init_sensor(VL53L0X_DEFAULT_ADDRESS);
 
     /// Call sensors enable routines
     sen_hum_temp.enable();
@@ -163,76 +178,66 @@
  * This function is called periodically.
  */
 void sensors_update() {
-    float fval1, fval2;
-    int32_t axes[3];
-    uint32_t uval;
+    float t1_val, t2_val, t3_val, h_val, p_val, v_val = 0.0;
+    int32_t m_axes[3], a_axes[3], g_axes[3];
+    uint32_t d_val, vl_res;
 
-    printf("\n");
+    printf("                                                             \n");
 
-    fval1 = fval2 = 0.0;
-    sen_hum_temp.get_humidity(&fval1);
-    sen_hum_temp.get_temperature(&fval2);
-    printf("HTS221 temp:  %7.2f C,  humidity: %7.2f %%\n", fval1, fval2);
-    if (endpointInfo) {
-        res_humidity->set_value(fval1);
-        res_temperature->set_value(fval2);
+    sen_hum_temp.get_humidity(&h_val);
+    sen_hum_temp.get_temperature(&t1_val);
+    sen_press_temp.get_pressure(&p_val);
+    sen_press_temp.get_temperature(&t2_val);
+    sen_mag.get_m_axes(m_axes);
+    sen_acc_gyro.get_x_axes(a_axes);
+    sen_acc_gyro.get_g_axes(g_axes);
+    vl_res = sen_distance.get_distance(&d_val);
+    t3_val = adc_temp.read()*100;
+    v_val = adc_vref.read();
+
+    printf("ADC temp:     %5.4f C,  vref:      %5.4f V         \n", t3_val, v_val);
+    printf("HTS221 temp:  %7.2f C,  humidity: %7.2f %%         \n", t1_val, h_val);
+    printf("LPS22HB temp: %7.2f C,  pressure: %7.2f mbar       \n", t2_val, p_val);
+    printf("LIS3MDL mag:  %7ld x, %7ld y, %7ld z [mgauss]      \n", m_axes[0], m_axes[1], m_axes[2]);
+    printf("LSM6DSL acc:  %7ld x, %7ld y, %7ld z [mg]          \n", a_axes[0], a_axes[1], a_axes[2]);
+    printf("LSM6DSL gyro: %7ld x, %7ld y, %7ld z [mdps]        \n", g_axes[0], g_axes[1], g_axes[2]);
+    if (vl_res == VL53L0X_ERROR_NONE) {
+        printf("VL53L0X dist: %7ld [mm]\n", d_val);
+    } else {
+        printf("VL53L0X dist:        --       \n");
     }
 
-    fval1 = fval2 = 0.0;
-    sen_press_temp.get_pressure(&fval1);
-    sen_press_temp.get_temperature(&fval2);
-    printf("LPS22HB temp: %7.2f C,  pressure: %7.2f mbar      \n", fval1, fval2);
-#ifdef SEND_ALL_SENSORS
+    printf("\r\033[8A");
+
     if (endpointInfo) {
-        res_pressure->set_value(fval1);
-        res_temperature2->set_value(fval2);
-    }
-#endif /* SEND_ALL_SENSORS */
-
-    sen_mag.get_m_axes(axes);
-    printf("LIS3MDL mag:  %7ld x, %7ld y, %7ld z [mgauss]      \n", axes[0], axes[1], axes[2]);
-
-    sen_acc_gyro.get_x_axes(axes);
-    printf("LSM6DSL acc:  %7ld x, %7ld y, %7ld z [mg]       \n", axes[0], axes[1], axes[2]);
-
-    sen_acc_gyro.get_g_axes(axes);
-    printf("LSM6DSL gyro: %7ld x, %7ld y, %7ld z [mdps]      \n", axes[0], axes[1], axes[2]);
+        res_humidity->set_value(h_val);
+        res_temperature->set_value(t1_val);
 #ifdef SEND_ALL_SENSORS
-    if (endpointInfo) {
-        res_gyroscope_x->set_value((float)axes[0]);
-        res_gyroscope_y->set_value((float)axes[1]);
-        res_gyroscope_z->set_value((float)axes[2]);
-    }
+        res_pressure->set_value(p_val);
+        res_temperature2->set_value(t2_val);
+        res_magnometer_x->set_value((float)m_axes[0]);
+        res_magnometer_y->set_value((float)m_axes[1]);
+        res_magnometer_z->set_value((float)m_axes[2]);
+        res_accelerometer_x->set_value((float)a_axes[0]);
+        res_accelerometer_y->set_value((float)a_axes[1]);
+        res_accelerometer_z->set_value((float)a_axes[2]);
+        res_gyroscope_x->set_value((float)g_axes[0]);
+        res_gyroscope_y->set_value((float)g_axes[1]);
+        res_gyroscope_z->set_value((float)g_axes[2]);
+        res_distance->set_value((float)d_val);
+        res_adc_temp->set_value(t3_val);
+        res_adc_voltage->set_value(v_val);
 #endif /* SEND_ALL_SENSORS */
-
-//     if (sen_distance.get_distance(&uval) == VL53L0X_ERROR_NONE) {
-//         printf("VL53L0X [mm]:            %6ld\n", uval);
-// #ifdef SEND_ALL_SENSORS
-//         if (endpointInfo) res_distance->set_value((float)uval);
-// #endif /* SEND_ALL_SENSORS */
-//     } else {
-//         printf("VL53L0X [mm]:                --\n");
-// #ifdef SEND_ALL_SENSORS
-//         if (endpointInfo) res_distance->set_value(99999.9);
-// #endif /* SEND_ALL_SENSORS */
-//     }
-
-    printf("\033[6A");
+    }
 }
 
 int main(void) {
     printf("\nStarting Simple Pelion Device Management Client example\n");
 
     // If the User button is pressed ons start, then format storage.
-    DigitalIn *user_button = new DigitalIn(BUTTON1);
-#if TARGET_DISCO_L475VG_IOT01A
-    // The user button on DISCO_L475VG_IOT01A works the other way around
-    const int PRESSED = 0;
-#else
-    const int PRESSED = 1;
-#endif
-    if (user_button->read() == PRESSED) {
+    if (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE) {
         printf("User button is pushed on start. Formatting the storage...\n");
+        bd->erase(0, bd->size());
         int storage_status = fs.reformat(&sd);
         if (storage_status != 0) {
             if (sd.erase(0, sd.size()) == 0) {
@@ -245,6 +250,8 @@
         if (storage_status != 0) {
             printf("ERROR: Failed to reformat the storage (%d).\n", storage_status);
         }
+    } else {
+        printf("You can hold the user button during boot to format the storage and change the device identity.\n");
     }
 
     sensors_init();
@@ -299,33 +306,73 @@
     res_humidity->observable(true);
 
 #ifdef SEND_ALL_SENSORS
-    res_pressure = client.create_resource("3323/1/5700", "pressure");
-    res_pressure->set_value(0);
-    res_pressure->methods(M2MMethod::GET);
-    res_pressure->observable(true);
-
     res_temperature2 = client.create_resource("3303/1/5700", "temperature");
     res_temperature2->set_value(0);
     res_temperature2->methods(M2MMethod::GET);
     res_temperature2->observable(true);
 
-    res_gyroscope_x = client.create_resource("3334/1/5702", "gyroscope_x");
+    res_adc_temp = client.create_resource("3303/2/5700", "temperature");
+    res_adc_temp->set_value(0);
+    res_adc_temp->methods(M2MMethod::GET);
+    res_adc_temp->observable(true);
+
+    res_accelerometer_x = client.create_resource("3313/0/5702", "accelerometer_x");
+    res_accelerometer_x->set_value(0);
+    res_accelerometer_x->methods(M2MMethod::GET);
+    res_accelerometer_x->observable(true);
+
+    res_accelerometer_y = client.create_resource("3313/0/5703", "accelerometer_y");
+    res_accelerometer_y->set_value(0);
+    res_accelerometer_y->methods(M2MMethod::GET);
+    res_accelerometer_y->observable(true);
+
+    res_accelerometer_z = client.create_resource("3313/0/5704", "accelerometer_z");
+    res_accelerometer_z->set_value(0);
+    res_accelerometer_z->methods(M2MMethod::GET);
+    res_accelerometer_z->observable(true);
+
+    res_magnometer_x = client.create_resource("3314/0/5702", "magnometer_x");
+    res_magnometer_x->set_value(0);
+    res_magnometer_x->methods(M2MMethod::GET);
+    res_magnometer_x->observable(true);
+
+    res_magnometer_y = client.create_resource("3314/0/5703", "magnometer_y");
+    res_magnometer_y->set_value(0);
+    res_magnometer_y->methods(M2MMethod::GET);
+    res_magnometer_y->observable(true);
+
+    res_magnometer_z = client.create_resource("3314/0/5704", "magnometer_z");
+    res_magnometer_z->set_value(0);
+    res_magnometer_z->methods(M2MMethod::GET);
+    res_magnometer_z->observable(true);
+
+    res_gyroscope_x = client.create_resource("3334/0/5702", "gyroscope_x");
     res_gyroscope_x->set_value(0);
     res_gyroscope_x->methods(M2MMethod::GET);
     res_gyroscope_x->observable(true);
 
-    res_gyroscope_y = client.create_resource("3334/1/5703", "gyroscope_y");
+    res_gyroscope_y = client.create_resource("3334/0/5703", "gyroscope_y");
     res_gyroscope_y->set_value(0);
     res_gyroscope_y->methods(M2MMethod::GET);
     res_gyroscope_y->observable(true);
 
-    res_gyroscope_z = client.create_resource("3334/1/5704", "gyroscope_z");
+    res_gyroscope_z = client.create_resource("3334/0/5704", "gyroscope_z");
     res_gyroscope_z->set_value(0);
     res_gyroscope_z->methods(M2MMethod::GET);
     res_gyroscope_z->observable(true);
 
+    res_adc_voltage = client.create_resource("3316/0/5700", "voltage");
+    res_adc_voltage->set_value(0);
+    res_adc_voltage->methods(M2MMethod::GET);
+    res_adc_voltage->observable(true);
+
+    res_pressure = client.create_resource("3323/0/5700", "pressure");
+    res_pressure->set_value(0);
+    res_pressure->methods(M2MMethod::GET);
+    res_pressure->observable(true);
+
     res_distance = client.create_resource("3330/0/5700", "distance");
-    res_distance->set_value(0);
+    res_distance->set_value((float)999.9);
     res_distance->methods(M2MMethod::GET);
     res_distance->observable(true);
 
@@ -357,4 +404,5 @@
     // You can easily run the eventQueue in a separate thread if required
     eventQueue.dispatch_forever();
 }
+
 #endif