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Arduino port version for ESP32 Compile Time setting vs. Runtime settings for IOT hub client and MQTT client #2819

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hcr-mit opened this issue May 11, 2024 · 0 comments
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customer-reported Issues that are reported by GitHub users external to the Azure organization. needs-triage Workflow: This is a new issue that needs to be triaged to the appropriate team. question The issue doesn't require a change to the product in order to be resolved. Most issues start as that

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@hcr-mit
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hcr-mit commented May 11, 2024

Query/Question
Why does the ESP32 for Hub example work when the device id, device key and Azure IoT Hub URL are set in #define works correctly, but when set at runtime, does not connect?

Why is this not a Bug or a feature Request?
This is not a bug because the example works when ran per the instructions.

Setup (please complete the following information if applicable):

  • OS: ESP32
  • IDE: Arduino IDE
  • Version of the Library used is current release of Arduino port of 1.5.0-beta.1

I am storing the device id, device key and Azure IoT Hub info in NVM on the ESP32S3 device. This is done during a provisioning session.
I have copied and pasted the example code that works, into a C++ class that retrieves the device and hub info and then sets the local variables at run-time before trying to execute the IoT Client and MQTT Client initializations. (no modifications to these functions).
I have set a 30 sec. delay between attempts to connect. Once the MQTT Client is started, I get the "Before Connect" event then I get the "Error" event with MQTT reporting "MQTT event MQTT_EVENT_ERRORE (39791) MQTT_CLIENT: MQTT connect failed".

The only modification from the example code was to declare the variables:
[
static const char *host;
static const char *mqtt_broker_uri;
static const char *device_id;
static const char *device_type;
]

Then run a function to set the values for these variables before initializing the clients (IoT , MQTT).

Information Checklist
Please make sure that you have added all the following information above and checkoff the required fields otherwise we will treat the issuer as an incomplete report

  • [ x] Query Added
  • [ x] Setup information Added
@github-actions github-actions bot added customer-reported Issues that are reported by GitHub users external to the Azure organization. needs-triage Workflow: This is a new issue that needs to be triaged to the appropriate team. question The issue doesn't require a change to the product in order to be resolved. Most issues start as that labels May 11, 2024
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Labels
customer-reported Issues that are reported by GitHub users external to the Azure organization. needs-triage Workflow: This is a new issue that needs to be triaged to the appropriate team. question The issue doesn't require a change to the product in order to be resolved. Most issues start as that
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