Application - AWS IoT

Setup your AWS CLI installation

• • sudo apt install awscli
• Go to IAM service to get the Access keys
  • aws configure

$ aws configure
AWS Access Key ID [None]: AKIAIOSFODNN7EXAMPLE
AWS Secret Access Key [None]: wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
Default region name [None]: us-west-2
Default output format [None]: json

• AWS development package - boto3
  • pip install tornado nose
  • pip install boto3
• Get AWS FreeRTOS
  • https://github.com/aws/amazon-freertos
• Create IoT thing
  • vim freertos/tools/aws_config_quick_start/configure.json
  • cd freertos/tools/aws_config_quick_start
  • python SetupAWS.py setup
• Toolchain version(5.2.0 is better)

$ xtensa-esp32-elf-gcc --version
xtensa-esp32-elf-gcc (crosstool-NG crosstool-ng-1.22.0-80-g6c4433a) 5.2.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

• Build

cd freertos
mkdir build
cmake -DVENDOR=espressif -DBOARD=esp32_wrover_kit -DCOMPILER=xtensa-esp32 -DCMAKE_BUILD_TYPE=Debug  -S . -B build
cd build
make all -j4

lambda

• Note that if you use Alexa-hosted skill for lambda, you may not configure the permission for AWSIoTFullAccess
• Function example(node.js)

var AWS = require('aws-sdk');

var iotdata = new AWS.IotData({endpoint:"a1q79ntmqqqssy-ats.iot.us-west-2.amazonaws.com"});

exports.handler = function(event, context, callback) {

console.log("found iotdata",iotdata);

    var params = {
        topic: 'iotdemo/topic/2',
        payload: 'on',
        qos: 0
        };


    iotdata.publish(params, function(err, data){
        if(err){
            console.log("Error occured : ",err);
        }
        else{
            console.log("success.....");
        }
    });

    callback();
};

• Trigger
  • Allow Alexa skill kit with ARN
• IAM Permission
  • AWSIoTFullAccess

• Reference

https://docs.aws.amazon.com/zh_tw/freertos/latest/userguide/getting_started_espressif.html