pelion-example-disco-iot01 - Mbed OS and Pelion Device Management example over…

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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 over WiFI and using onboard QSPI flash.

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

Diff: main.cpp

Revision:: 29:6ff737b67e7d
Parent:: 28:0e774865873d
Child:: 30:15743b79c6cb

--- a/main.cpp	Mon Mar 04 22:11:02 2019 +0000
+++ b/main.cpp	Thu Mar 07 15:39:45 2019 +0000
@@ -48,7 +48,7 @@
 // Default block device
 BlockDevice* bd = BlockDevice::get_default_instance();
 SlicingBlockDevice sd(bd, 0, 2*1024*1024);
-LittleFileSystem fs("fs", &sd);
+LittleFileSystem fs("fs");
 
 // Default User button for GET example
 InterruptIn button(BUTTON1);
@@ -95,7 +95,7 @@
  * @param newValue Updated value for the resource
  */
 void led_put_callback(MbedCloudClientResource *resource, m2m::String newValue) {
-    printf("PUT received, new value: %s\n", newValue.c_str());
+    printf("*** PUT received, new value: %s                             \n", newValue.c_str());
     led = atoi(newValue.c_str());
 }
 
@@ -107,7 +107,7 @@
  * @param size Size of the body
  */
 void led_post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
-    printf("POST received. Payload: %s\n", res_led->get_value().c_str());
+    printf("*** POST received. Payload: %s                              \n", res_led->get_value().c_str());
     led = atoi(res_led->get_value().c_str());
 }
 
@@ -117,7 +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);
 }
 
 /**
@@ -126,7 +126,7 @@
  * @param status The delivery status of the notification
  */
 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
-    printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
+    printf("*** Button notification, status %s (%d)                     \n", MbedCloudClientResource::delivery_status_to_string(status), status);
 }
 
 /**
@@ -142,8 +142,9 @@
  * Initialize sensors
  */
 void sensors_init() {
-    uint8_t id;
+    uint8_t id1, id2, id3, id4;
 
+    printf ("\nSensors configuration:\n");
     // Initialize sensors
     sen_hum_temp.init(NULL);
     sen_press_temp.init(NULL);
@@ -154,21 +155,18 @@
     /// Call sensors enable routines
     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 ("\nSensors configuration:\n");
+    sen_hum_temp.read_id(&id1);
+    sen_press_temp.read_id(&id2);
+    sen_mag.read_id(&id3);
+    sen_acc_gyro.read_id(&id4);
 
-    sen_hum_temp.read_id(&id);
-    printf("HTS221  humidity & temperature    = 0x%X\n", id);
-    sen_press_temp.read_id(&id);
-    printf("LPS22HB pressure & temperature    = 0x%X\n", id);
-    sen_mag.read_id(&id);
-    printf("LIS3MDL magnetometer              = 0x%X\n", id);
-    sen_acc_gyro.read_id(&id);
-    printf("LSM6DSL accelerometer & gyroscope = 0x%X\n", id);
+    printf("HTS221  humidity & temperature    = 0x%X\n", id1);
+    printf("LPS22HB pressure & temperature    = 0x%X\n", id2);
+    printf("LIS3MDL magnetometer              = 0x%X\n", id3);
+    printf("LSM6DSL accelerometer & gyroscope = 0x%X\n", id4);
 
     printf("\n"); ;
 }
@@ -234,11 +232,18 @@
 int main(void) {
     printf("\nStarting Simple Pelion Device Management Client example\n");
 
-    // If the User button is pressed ons start, then format storage.
-    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);
+    int storage_status = fs.mount(&sd);
+    if (storage_status != 0) {
+        printf("Storage mounting failed.\n");
+    }
+    bool btn_pressed = (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE);
+    if (btn_pressed) {
+        printf("User button is pushed on start...\n");
+    }
+    if (storage_status || btn_pressed) {
+        printf("Formatting the storage...\n");
+        sd.erase(0, sd.size());
+        storage_status = fs.reformat(&sd);
         if (storage_status != 0) {
             if (sd.erase(0, sd.size()) == 0) {
                 if (fs.format(&sd) == 0) {