TI CC3220 with Amazon FreeRTOS

You can check the latest version of tutorial and code in Github

AWS IoT

An operating system for microcontrollers that makes small, low-power edge devices easy to program, deploy, secure, connect, and manage
AmazonFreeRTOS is based on the FreeRTOS kernel
Extends it with software libraries that make it easy to securely connect your small, low-power devices to AWS cloud services like AWS IoT Core or to more powerful edge devices running AWS Greengrass.
Amazon FreeRTOS architecture is shown here

Amazon tutorial: [Getting Started with the Texas Instruments CC3220SF-LAUNCHXL]
Amazon FreeRTOS supports two IDEs for the TI CC3220SF-LAUNCHXL development kit: Code Composer Studio and IAR Embedded Workbench. In this tutorial, we will use Code Composer Studio.
Step1: Install Code Composer Studio
Step2: Install the SimpleLinkCC3220 SDK
Step3: Install Uniflash from http://www.ti.com/tool/UNIFLASH
- CCS Uniflashis a standalone tool used to program on-chip flash memory on TI MCUs.
- Uniflash has a GUI, command line, and scripting interface.

Step4: Install the Latest Service Pack

On your TI CC3220SF-LAUNCHXL, place the SOP jumper on the middle set of pins (position = 1) and reset the board.
StartUniflash, and from the list of configurations, choose CC3220SF-LAUNCHXL. Choose Start Image Creator.
Choose New Project
On the Start new project page, enter a name for your project. For Device Type, choose CC3220SF. For Device Mode, choose Develop, and then choose Create Project

Disconnect your serial terminal (if previously connected) and on the right side of the Uniflashapplication window, choose Connect.

From the left column, choose Service Pack.
Choose Browse, and then navigate to where you installed the CC3220SF SimpleLinkSDK. The service pack is located atti\simplelink_cc32xx_sdk_VERSION\tools\cc32xx_tools\servicepack-cc3x20\sp_VERSION.bin

Click the burn button then choose Program Image (Create & Program) to install the service pack.

Step5: Download Amazon FreeRTOS

Browse to the AWS IoT console
https://console.aws.amazon.com/iotv2/
In the navigation pane, choose Software.
Under AmazonFreeRTOSDevice Software, choose Configure download.
Under Software Configurations, find Connect to AWS IoT- TI, and then
- If you are using Code Composer Studio, choose Download.
- Unzip the downloaded file to your hard drive. When unzipped, you have a directory named AmazonFreeRTOS.

Step6: AWS Account and Permissions

In the search box, enter AmazonFreeRTOSFullAccess, choose it from the list, and then choose Next: Review.
Choose Add permissions

Step7: Create an AWS IoT policy

Go to AWS IoT console: https://console.aws.amazon.com/iotv2/
In the navigation pane, choose Secure, choose Policies, and then choose Create

Step8: To create an IoT thing, private key, and certificate for your device

On the Add your device to the thing registry page, enter a name for your thing, and then choose Next.

On the Add a certificate for your thing page, under One-click certificate creation, choose Create certificate
Choose One-click certificate creation

Download your private key and certificate by choosing the Download links for each
Choose Activate to activate your certificate
Download Root CA

In the IoT console, choose Attach a policy to attach a policy to your certificate that grants your device access to AWS IoT operations
Click Register Thing

Step9: configure your AWS IoT endpoint

Browse to the AWS IoT console
In the navigation pane, choose Settings
The AWS IoT endpoint is displayed in Endpoint. It should look like <1234567890123>-ats.iot.<us-east-1>.amazonaws.com
open AWS downloaded <BASE_FOLDER>\demos\common\include\aws_clientcredential.h and specify values for the following #define constants:
- clientcredentialMQTT_BROKER_ENDPOINT Your AWS IoT endpoint: a53l6idwvzofq-ats.iot.us-west-2.amazonaws.com
- •clientcredentialIOT_THING_NAME The AWS IoT thing name of your board: FreeRTOS-TICC3220a
Open the aws_clientcredential.h file
Specify values for the following #define constants:
- clientcredentialWIFI_SSID The SSID for your Wi-Fi network
- clientcredentialWIFI_PASSWORD The password for your Wi-Fi network
- clientcredentialWIFI_SECURITY The security type of your Wi-Fi network
AmazonFreeRTOSis a C language project, and the certificate and private key must be specially formatted to be added to the project
open <BASE_FOLDER>\tools\certificate_configuration\CertificateConfigurator.html
- Under Certificate PEM file, choose the <ID>-certificate.pem.crt that you downloaded from the AWS IoT console
- Under Private Key PEM file, choose the <ID>-private.pem.key that you downloaded from the AWS IoT console
- Choose Generate and save aws_clientcredential_keys.h, and then save the file in <BASE_FOLDER>\demos\common\include. This overwrites the existing file in the directory

Step10: Build and Run Amazon FreeRTOSSamples

Step11: Final test

AWS IoT Console, In the navigation pane, choose Test to open the MQTT client. In Subscription topic, enter freertos/demos/echo, and then choose Subscribe to topic
In TI CC3220 board
- Make sure the Sense On Power (SOP) jumper on your Texas Instruments CC3220SF-LAUNCHXL is in position 0
- Use a USB cable to connect your Texas Instruments CC3220SF-LAUNCHXL to your computer
- From Project, choose Build Project to make sure the project compiles without errors or warnings
- In TI Code Composer, from Run, choose Debug
- When the debugger stops at the breakpoint in main(), go to the Run menu, and choose Resume
In AWS IoT Console, you will see the data has been received by the AWS IoT subscription