Can't initialize IoTHub_init() azure-iot-sdk-c on docker linux

Question

Hello, I'm using Azure Iot Edge on my embedded device (ARM32v7) and I'm trying to deploy a custom module on the target. The proble is that I'm still getting the same error when I try to initilizae my IoTHub_init() with the azure-iot-sdk-c.

I've already tried different supported distros (bionic,xenial,trusty) by the azure-iot-sdk-c without success.

This is the docker logs output for my custom module:

16:45:12 2022 File:/build/azure-c-shared-util-w6wmSB/azure-c-shared-util-0.2.0.0/adapters/tlsio_openssl.c Func:openssl_static_locks_uninstall Line:585 Locks already uninstalled

I don't know if there's a component missing on my docker container as this is the dockerfile:

FROM arm32v7/ubuntu:bionic AS base
RUN apt-get update && \
apt-get install -y --no-install-recommends software-properties-common && \
add-apt-repository -y ppa:aziotsdklinux/ppa-azureiot && \
apt-get update && \
apt-get install -y azure-iot-sdk-c-dev && \
apt-get install -y sqlite3 libsqlite3-dev && \
apt-get install -y libmodbus-dev && \
apt-get install -y libjson-c-dev && \
rm -rf /var/lib/apt/lists/*

FROM base AS build-env
RUN apt-get update && \
apt-get install -y --no-install-recommends cmake gcc g++ make libcurl5-openssl-dev && \
rm -rf /var/lib/apt/lists/*

WORKDIR /app
COPY . ./
RUN cmake .
RUN make

FROM base
WORKDIR /app
COPY --from=build-env /app ./
RUN useradd -ms /bin/bash moduleuser
RUN chown moduleuser /app
USER moduleuser
CMD ["./main"]

Thanks

Answer 1

Hello @JuanCarrasco-824,

the Azure IoT Edge development tools come with a Visual Studio or VS Code extension where custom modules can be created based on templates.

Did you try the custom C template for Azure IoT Edge modules first?