I want to connect an embedded system to the Azure IoT hub. The system consists of a STM32 microcontroller, some sensors and a modem with the following features:
I want to extend my code base by the usage of the Azure IoT Client C SDK.
STM has integrated the C SDK into their Cube for simple connection with Azure. Please take a look at this table to find the appropriate link for your STM microcontroller.
If the microcontroller you use is not supported, you can always port our SDK to any platform by following the porting guidance.
From the details provided I see no reasons for not being possible.
This github repository has some examples on how to connect boards with STM32 microcontroller.
Also note from here:
The minimum requirements are for the device platform to support the following:
- Being capable of establishing an IP connection: only IP-capable devices can communicate directly with Azure IoT Hub.
- Support TLS: required to establish a secure communication channel with Azure IoT Hub.
- Support SHA-256 (optional): necessary to generate the secure token for authenticating the device with the service. Different authentication methods are available and not all require SHA-256.
- Have a Real Time Clock or implement code to connect to an NTP server: necessary for both establishing the TLS connection and generating the secure token for authentication.
- Having at least 64KB of RAM: the memory footprint of the SDK depends on the SDK and protocol used as well as the platform targeted. The smallest footprint is achieved targeting microcontrollers.
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If you are considering porting the device client SDK for C to a new platform, check out the porting guide document.
