檢視 Application - AWS IoT 的原始碼

* Setup your AWS CLI installation
** sudo apt  install awscli 
* Go to IAM service to get the Access keys
** aws configure
<pre>
$ 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
</pre>

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