Run AWS IOT core MQTT sample on EK‐RA8M1

• Hardware connection

Remove jumper J61 to enable Ethernet B

Jumper	Configurations
J61	Open

• AWS IoT Core setup

1. To run this sample, you need to create an account on Amazon Web Services: https://aws.amazon.com/

2. Once your account is created, sign in to AWS console as root user: https://aws.amazon.com/

3. After signing in to AWS console, in the search bar, search for "IoT core" and open it

4. Create a thing name "zephyr_sample", add certificate and policy for it.

• Go to "AWS IoT -> Manage -> Things -> Create things -> Create single thing"

• Create Cerificate for IoT thing, it's recommended to use the autogenerated one from AWS.

• Create and attach policy to certificate, when click "Create policy" a new tab will pop up at "AWS IoT -> Security -> Policies"

• Add below permission:

Policy effect	Policy actions	Policy resource
Allow	iot:Connect	*
Allow	iot:Publish	*
Allow	iot:Receive	*
Allow	iot:GetRetainedMessage	*
Allow	iot:ListRetainedMessage	*
Allow	iot:RetainPublish	*
Allow	iot:Subscribe	*

• After finished creating the policy go back to the old tab, choose the policy and click "Create thing"

Important: After click "Create thing" you will be asked to download the Certificates and Keys, check and download Device Cerificate, Public key and Private key.

• Setup, Build and Verify sanmple application

1. Copy the downloaded the certificates and keys file in step 4 to "zephyr/samples/net/cloud/aws_iot_mqtt/src/creds" and execute "zephyr/samples/net/cloud/aws_iot_mqtt/src/creds/convert_keys.py", it will help to generate the key in form of C code for the sample.

2. Modify "CONFIG_AWS_ENDPOINT" config in "zephyr/samples/net/cloud/aws_iot_mqtt/prj.conf" to your AWS account End point (it can be check in AWS IoT -> Settings)

3. Build and Flash application to board.

   cd ~/zephyrproject/zephyr

   west build -b ek_ra8m1 -p always samples/net/cloud/aws_iot_mqtt/

   west flash

4. Verify result using "MQTT test client" on AWS IoT console.

• The sample is created to Publish a message to topic "zephyr_sample/data" and Subscribe to topic "zephyr_sample/downlink". On AWS IoT console "MQTT test client" we can Subcribe to topic "zephyr_sample/data" to verify message sent from board and publish a message to topic "zephyr_sample/downlink" to send a message to the board

Result:

• For each message MQTT test client send to top "zephyr_sample/downlink" board will response with a message to "zephyr_sample/data":

• Log show on board console: