Arduino MKR WIFI 1010 to Azure IoT Hub - MQTT_NOT_AUTHORIZED

Murat 101

I have been working on this project with my Arduino MKR 1010 WiFi

Following the guidelines below
https://github.com/microsoft/IoT-For-Beginners/blob/main/2-farm/lessons/4-migrate-your-plant-to-the-cloud/wio-terminal-connect-hub.md

I updated all the header to use the right wifi library.

Below line added where appropriate

elif ARDUINO_SAMD_MKRWIFI1010

include <WiFiNINA.h>

But nevertheless, so far I cannot connect to IoT Hub. I cannot get it connected to it gave me error #5 which is I assume #define MQTT_NOT_AUTHORIZED 5.

I don't know what I am doing wrong?.. Is it due to the hardware? Any idea? Or SSL Client

Any help would be appreciated.

AshokPeddakotla-MSFT 27,126 Reputation points

2021-08-20T11:40:32.463+00:00

@Murat Could you share the complete error details? Please check this troubleshooting guide for common errors and resolutions and let us know if that solves your issue.
Murat 101 Reputation points

2021-08-20T15:39:26.293+00:00

I tried also the example at Arduino example this code

https://github.com/arduino/ArduinoCloudProviderExamples/tree/master/examples/Azure%20IoT%20Hub/Azure_IoT_Hub_WiFi

I did not work either. In this case, it gives me Error code #5.

For the code at microsoft/IoT-For-Beginners, the below code always returns NULL, I don't get any other information, and I could not locate where is the log file resides.

IoTHub_Init();
_device_ll_handle = IoTHubDeviceClient_LL_CreateFromConnectionString(CONNECTION_STRING, MQTT_Protocol);
if (_device_ll_handle == NULL)

Is it due to the hardware? I will find out this since I ordered Arduino Wifi 1000 and also WIO Terminal to test with them as well.
AshokPeddakotla-MSFT 27,126 Reputation points

2021-08-23T11:44:36.213+00:00

@Murat Sure, please update the status once you test this with the hardware.

Accepted answer

Murat 101 Reputation points

2021-08-25T16:41:57.473+00:00

I think I needed to do a lot of customization in the library, so I gave up trying for MKR WiFi 100 but it works for Seeed's WIO Terminal
Thank you
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Murat 101 Reputation points

2021-08-25T16:33:47.717+00:00

Update:

It works with WIO Terminal - did not try with MKR 1000

Thank you

AshokPeddakotla-MSFT 27,126 Reputation points

2021-08-26T14:02:06.203+00:00

@Murat Thanks for an update. Appreciate for testing and providing the confirmation. Feel free to accept your response as answer. It will definitely beneficial to the community members reading this thread.
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1 additional answer

Murat 101 Reputation points

2021-11-03T03:14:52.733+00:00

I just wanted to note here

This is fantastic - here is the solution to my problem

Connecting MKR WIFI 1010 to Microsoft Azure IoT Hub with Symmetric key Device option

https://paul-bruffett.medium.com/iot-azure-pipeline-9725ac2b6a00
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1 person found this answer helpful.
Pavlov, V.M. (Vitomir, Student M-CS) 1 Reputation point

2022-08-19T07:56:44.913+00:00

Hey, @Murat ,

Have you tried this with asymmetric, or with other words X509 CA signed authentication option? I already have success with using the symmetric key with Azure IoT SDK C, there is also pre-built sketch in the Arduino IDE when you install the library. However, there is no option to use X509 certificates in there and I found some kind of libraries that might help - ArduinoMqttClient and ArduinoBearSSL. Nonetheless, I could not achieve successful connection with IoT Hub and I could not find where I am doing something wrong. Here is the code for my attempt to connect with X509 CA signed certificates - https://github.com/Vitomir2/Digital-Twins-Azure-IoT-Hub/blob/main/source/auth-x509-certs-arduino-sketches/authentication-x509-certificates-2/authentication-x509-certificates-2.ino

br_x509_certificate x509cert = { CLIENT_CERT, sizeof(CLIENT_CERT) - 1 }; Where the cert is: static unsigned char CLIENT_CERT[] PROGMEM = R"EOF( \-----BEGIN CERTIFICATE----- MIIB6zCCAZCgAwIBAgIQPp3EmWBxi7FHs5X1pztRAzAKBggqhkjOPQQDAjAoMSYw \------------------------------------------------------------------------------------- 4J7dzsDEOdJgBhMwYyDf \-----END CERTIFICATE----- )EOF";
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