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Zephyr Project Port

Overview

This port is for the Zephyr RTOS Project, available here.

It provides the following zephyr code.

  • modules/lib/wolfmqtt
    • wolfMQTT library code
  • modules/lib/wolfmqtt/zephyr/
    • Configuration and CMake files for wolfMQTT as a Zephyr module
  • modules/lib/wolfmqtt/zephyr/samples/client
    • wolfMQTT client test application
  • modules/lib/wolfmqtt/zephyr/samples/client_tls
    • wolfMQTT client test application over TLS

How to setup as a Zephyr Module

Follow the instructions to setup a zephyr project.

Modify your project's west manifest

Add wolfMQTT as a project to your west.yml:

manifest:
  remotes:
    # <your other remotes>
    - name: wolfmqtt
      url-base: https://github.com/wolfssl

  projects:
    # <your other projects>
    - name: wolfmqtt
      path: modules/lib/wolfmqtt
      revision: master
      remote: wolfmqtt

Update west's modules:

west update

Now west recognizes 'wolfmqtt' as a module, and will include it's Kconfig and CMakeFiles.txt in the build system.

Build and Run Samples

Follow the instructions to setup the infratructure to enable networking in QEMU. Run the following commands in parallel in this order in the net-tools directory to allow communication between the QEMU instance and the host. Make sure to disable any software that modifies the local network like VPN's.

./loop-socat.sh
sudo ./loop-slip-tap.sh

Run the following commands in parallel in this order in the zephyrproject directory to setup a MQTT broker and subscriber (on port 11883 as defined in the mosquitto config).

cd modules/lib/wolfmqtt && mosquitto -c scripts/broker_test/mosquitto.conf
mosquitto_sub -p 11883 -t sensors

Build and Run client Test Application

build and execute client

cd [zephyrproject]
west build -p auto -b qemu_x86 modules/lib/wolfmqtt/zephyr/samples/client
west build -t run

Build and Run client TLS Test Application

Prerequisite: Add wolfSSL Zephyr module: https://github.com/wolfSSL/wolfssl/blob/master/zephyr/README.md

build and execute client TLS

cd [zephyrproject]
west build -p auto -b qemu_x86 modules/lib/wolfmqtt/zephyr/samples/client_tls
west build -t run

Debugging using QEMU

To attach a debugger to the QEMU instance run:

west build -t debugserver_qemu

And attach gdb with:

$ gdb path/to/zephyr.elf
(gdb) target remote localhost:1234