Azure IoT Hub client Disconnect, Reconnecting STMicro B-L4S5I-IOT01A Getting Started Tutorial

[oh-domino]

I am using the STMicro B-L4S5I-IOT01A and following the STM32L4_L4+ tutorial - https://github.com/azure-rtos/getting-started/tree/master/STMicroelectronics/STM32L4_L4+

The device is provisioned and the IoT Hub is waiting for data.

Do you know why my device is not connecting to IoT hub?

[ryanwinter]

Hi @oh-domino,

I'm not sure, the fact it connected to DPS successfully means that everything should be in place. Let me run a test on my end to see if something is going on.

Ryan

[ryanwinter]

Everything is working at my end, can I check a couple of details:

1. What firmware version are using?
2. Which location is your central instance deployed to?
3. What code changes have you made?
4. Are you using the threadx/netxduo version that is submoduled?

One strange thing is that you are getting a disconnect event, however your not getting a connect event.

[oh-domino]

Hi Ryan,

1. C3.5.2.5.STM
2. How do I find this?
3. Changed the azure_config.h file and added time.nist.gov to sntp_client.c
4. I don't think so

Thanks,

Derek

[ryanwinter]

For finding the Central location, you would look in the Azure portal, it will have the location listed for the resource:

If you are running the 7-day trial, then you will always be in the same location so you cant configure this.

[oh-domino]

I can't find the same location that you showed but I have this from my profile in the portal.

I am running the 7 day trial right now.

[oh-domino]

Ryan,

Is there anything else I can do to debug this issue with the Reconnect, Disconnect?

Derek

[ryanwinter]

Hi Derek,

We have updated the Threadx to the latest release, can you try retesting this by checking out the code again?
Also are you using a SAS key here?

Also, can you turn on debugging, by adding the following:

1. Create a log handler in main.c:

#include "nx_azure_iot.h"
static void write_log_message(az_log_classification classification, UCHAR *msg, UINT msg_len)
{
    printf("LOG %.*s\n", msg_len, msg);
}

2. Register it in azure_thread_entry (main.c)
   nx_azure_iot_log_init(write_log_message);

3. You can also increase debugging by adding the following to the nx_user.h, although maybe see if the default gives anything useful first.
   #define NX_AZURE_IOT_LOG_LEVEL 3