Infineon AIROC IFW56810 User manual

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Getting started with AIROC™ IFW56810 Single-
band Wi-Fi 4 Cloud Connectivity Manager
About this document
Scope and purpose
This document guides the user to set up and connect the AWS IoT ExpressLink IFW56810 Cloud Connectivity
Manager module to the AWS IoT Core in a few simple steps without involving any firmware development. This
document also provides an overview of the module, the evaluation kit, steps to connect to the AWS Cloud and
usage of AT commands.
Intended audience
Customers who are new to IoT and/or require a turnkey solution to get their products connected to the cloud.
Table of contents
About this document....................................................................................................................... 1
Table of contents............................................................................................................................ 1
1Overview............................................................................................................................... 3
2Kit contents........................................................................................................................... 4
3Hardware .............................................................................................................................. 5
4Getting started ...................................................................................................................... 6
4.1 Connect the kit to the PC ........................................................................................................................6
4.2 Set up the host machine .........................................................................................................................6
4.3 Set up your AWS account and permissions............................................................................................6
4.4 Register the kit to your AWS development account ..............................................................................7
4.4.1 CIRRENT cloud flow............................................................................................................................7
4.4.1.1 Bind your device to your CIRRENT account .................................................................................7
4.4.1.2 Execute the CloudFormation template........................................................................................8
4.4.1.3 Create Product Cloud API .............................................................................................................9
4.4.1.4 Provision and connect the kit to your AWS account..................................................................11
4.4.2 AWS flow...........................................................................................................................................11
4.5 Connect the kit to Wi-Fi.........................................................................................................................12
4.5.1 Using Cirrent Wi-Fi onboarding app................................................................................................13
4.5.2 Using AT commands ........................................................................................................................13
4.6 Connect and interact with the AWS Cloud ...........................................................................................13
4.6.1 Connect ............................................................................................................................................14
4.6.2 Send data to the AWS Cloud............................................................................................................14
4.6.3 Receive data and commands from the cloud .................................................................................14
5Advanced AT commands ........................................................................................................15
5.1 Publish to a non-default topic ..............................................................................................................15
5.2 Subscribe to a non-default topic ..........................................................................................................15

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Table of contents
6Performing firmware over-the-air update................................................................................16
6.1 Prerequisites..........................................................................................................................................16
6.2 Create a firmware update job in AWS IoT.............................................................................................16
6.3 Monitor and apply the new firmware update for the IFW56810 module ............................................17
7Setting up a serial terminal on the PC ......................................................................................18
7.1 Determine the COM port number .........................................................................................................18
7.2 Serial terminal settings.........................................................................................................................19
8FAQs ....................................................................................................................................20
Revision history.............................................................................................................................21

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Overview
1Overview
AIROC™IFW56810 Single-band Wi-Fi 4 Cloud Connectivity Manager Module (CCM) is a configurable Wi-Fi
connectivity module that provides a simple, secure, plug-and-play solution for connecting products to AWS IoT
cloud services. The IFW56810 CCM module is preprogrammed with a tested secured firmware and supports an
easy-to-use AT command interface for configuration, and provides end-to-end security.
•The device identity certificate is built into the module and can run only Infineon-signed firmware.
•The module connects to the cloud using secure connections.
•Devices are managed securely in the cloud.
The IFW56810 CCM module features a 1x1 single-band (2.4 GHz) device operating at 20-MHz channels
supporting IEEE 802.11 b/g/n. See the datasheet for details.
The host processor system interacts with the IFW56810 CCM module through AT commands over UART. The
IFW56810 CCM module handles all networking-related operations to connect to the AWS IoT Core through
MQTT over Wi-Fi.
Host Processor IFW56810 CCM
Module AWS IoTAT Commands MQTT
Figure 1 System architecture for products using the IFW56810 CCM module

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Kit contents
2Kit contents
•IFW956810 Single-band Wi-Fi 4 Cloud Connectivity Manager evaluation kit to evaluate the IFW56810 Single-
band Wi-Fi 4 Cloud Connectivity Manager Module
•USB Type-A (male) to Type-C (female) cable

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Hardware
3Hardware
The IFW956810 CCM evaluation kit consists of an IFW56810 single-band Wi-Fi 4 Cloud Connectivity Manager
module with powerful processing capability, a PCB antenna, an FTDI chip for the USB to serial interface, and an
8x2 pin header.
IFW56810 module
Printed Antenna
USB Type-C male
Plug
Figure 2 Top view
8*2 pin header
(J60)
FTDI chip
Figure 3 Bottom view
Ensure that pin 3 to pin 4, pin 5 to pin 6, pin 9 to pin 10 and pin 11 to pin 12 of header J60 are closed as shown in
Figure 3 before connecting USB dongle to the PC. The PC can be used as a host for evaluation. AT commands
can be sent through a serial terminal on the PC to the IFW956810 CCM kit.

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Getting started
4Getting started
4.1 Connect the kit to the PC
Connect the IFW956810 Single-band Wi-Fi 4 Cloud Connectivity Manager evaluation kit to the PC using either
the Type-C connector or Type-A male to Type-C female cable.
Figure 4 Connect the USB dongle to the PC
4.2 Set up the host machine
Run a serial terminal to communicate with the kit over USB by choosing higher of the two enumerated COM
ports with the following configuration.
•Baud rate: 115,200
•Bits: 8
•Parity: None
•Stop: 1
•Flow control: None
•Local Echo: Yes
•End of Line: Line Feed
See Section 7for more details.
Once you open the serial terminal, type AT+CONF? About in the serial terminal.
You should see a response “OK Infineon IFW56810 CCM”.
Steps in sections 4.3 to 4.5 are required only for the first time you connect. The IFW56810 module will
remember its configuration and will be ready to connect to your AWS account automatically.
Jump to Section 4.6 if the kit has already been configured to connect to AWS.
4.3 Set up your AWS account and permissions
Follow the instructions in Amazon documentation (Set up your AWS Account) to create your account and get
started.
1. Sign up for an AWS account.
2. Create a user and grant permissions for access to AWS IoT resources.
3. Open the AWS IoT Console.

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Getting started
4.4 Register the kit to your AWS development account
You can register your kit to your AWS development account using either Infineon’s CIRRENT cloud flow or AWS
flow.
The CIRRENT cloud flow uses the Cloud ID solution to simplify the process of connecting the kit to your AWS
developer account by eliminating several manual steps that need to be performed in the AWS flow.
Learn more about the Cloud ID solution here.
At a high level, CIRRENT cloud flow performs the following functions to connect the kit to your developer
account:
1. Binds your kit to your CIRRENT account.
2. Provisions the AWS resources for the kit on your AWS account.
The resources include the Thing (cloud representation of your physical device),
device certificate (associates the device certificate from the CIRRENT cloud to your Thing),
Policies (creates and associates AWS IoT Thing access policies to your Thing)
3. Enables the kit to connect to your AWS account.
The endpoint of your AWS development account is required for the kit to connect to your AWS account.
The CIRRENT cloud pulls the AWS endpoint required from your AWS account and automatically pushes it to
the kit. This enables the kit to connect to your AWS development account.
CIRRENT cloud flow is very close to the production flow and demonstrates the ease of securely connecting your
products to the product cloud. CIRRENT cloud is preloaded with the device certificate of all IFW56810 modules,
thus offloading the effort of managing device certificates from product manufacturers.
See Section 4.4.1 for CIRRENT cloud flow or jump to Section 4.4.2 for AWS flow.
4.4.1 CIRRENT cloud flow
4.4.1.1 Bind your device to your CIRRENT account
Your kit is already bound to your CIRRENT account when you registered your kit through the Quick Start Guide
provided along with the kit.
If you landed on this page without following the Quick Start Guide, see the document provided along with your
kit.
Do the following to verify the kit binding:
1. Log in to your CIRRENT account at https://console.cirrent.com/.
2. On the panel on the left of the screen, select Device Management > Cloud ID, and then select the Binding
tab.
Alternatively, click this link to go directly to this page.
3. Choose your account number as follows:

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Getting started
4. Locate your device listed on the page.
4.4.1.2 Execute the CloudFormation template
CloudFormation is an AWS service that helps in setting up the required resources in AWS through a template
(JSON or YAML file). Executing a CloudFormation template creates a stack in the AWS CloudFormation service.
A stack is a collection of AWS resources.
The template for creating AWS resources required for connecting the IFW956810 evaluation kit to AWS IoT Core
is already created by Infineon and stored in Amazon S3 storage. The stack created by this template provides
certain outputs that can be used to establish a channel of back-end cloud communication between your
CIRRENT account and your AWS account.
You need to execute the CloudFormation template only once per AWS account in a region. The same stack can
be reused to provision multiple kits to the AWS account in that region.
Do the following to execute the Infineon-provided CloudFormation template:
1. Click on the following link to execute the CloudFormation template. By default, the link uses the us-west-1
region.
https://us-west-1.console.aws.amazon.com/cloudformation/home?region=us-west-
1#/stacks/create/template?stackName=infineon-iot-quickstart&templateURL=https://cirrent-quickstarts.s3.us-
west-2.amazonaws.com/infineon-iot-quickstart.yaml
You can change the region in which you want to execute this template by changing the region=us-west-1
in this link to your required region. See Choosing a Region on AWS documentation.
2. On the Create Stack page in the AWS CloudFormation service with the Infineon CloudFormation template
preloaded, click Next.

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3. Click Next in Step 2.
4. Click Next in Step 3.
5. Select the boxes to provide permissions to access the resources required by the CloudFormation template.
6. Click Create stack.
Wait for up to five minutes for the stack creation to complete.
4.4.1.3 Create Product Cloud API
Product Cloud API is used to communicate with your AWS account. This API must be executed once per
CIRRENT account. The same API can be used to provision multiple kits from your CIRRENT account to your AWS
account.
1. Navigate to your CIRRENT console and go to Provisioning tab or use this link directly.
2. Click Add Cloud API.

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3. When prompted, enter your AWS account parameters.
4. Navigate back to your AWS CloudFormation page.
5. Click Outputs.
6. Copy the AccountId, GatewayId, Region, and Stage values from your AWS Console to the CIRRENT
console.
7. In the CIRRENT console’s Create Cloud API window, click Create.
8. Select the created Product Cloud API from the dropdown list next to Product Cloud API.

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4.4.1.4 Provision and connect the kit to your AWS account
1. In the CIRRENT console, navigate to the Binding tab.
1
2 6
3
4
2. Click Edit.
3. Click the drop-down list in the API Endpoint column.
4. Choose the Product Cloud API created in Section 4.4.1.3.
5. Click Save.
6. Click Provision now. This performs two functions:
a. Creates the Thing for your kit in the AWS Console and attaches the related policy and device certificate.
b. Pulls the AWS endpoint required by the kit to connect to your AWS account and pushes it to the device.
When the kit is connected to Wi-Fi network, it will pull this endpoint from the CIRRENT cloud and connect to
the AWS cloud automatically.
7. Jump to Section 4.5 to connect your kit to Wi-Fi.
Note: To connect one more kit using the CIRRENT cloud flow, skip section 4.4.1.2 if you are using the
same AWS account and Section 4.4.1.3 if you are using the same CIRRENT cloud account. Follow
only Section 4.4.1.1 and Section 4.4.1.4.
4.4.2 AWS flow
1. Open the AWS IoT Console.
2. Select Manage, and then select Things.
3. Choose Create Things.
4. Select Create single thing, and then click Next.
5. In the terminal application, type the following command:

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AT+CONF? ThingName
6. Copy the returned string (a sequence of alphanumeric characters) from the terminal.
7. On the console, on the Specify thing properties page, paste the copied string from the terminal into the
Thing name field under Thing properties.
8. Leave other fields at their default values, and then click Next.
9. In the terminal application, type the following command:
AT+CONF? Certificate
You will receive the device certificate in PEM format as part of the response.
10.Copy the returned string (a longer sequence of alphanumeric symbols), and save it into a text file on your
host machine as “ThingName.cert.pem”.
Replace ThingName with the name of the Thing obtained in Step 5.
11.On the Configure device certificate page, select Use my certificate, and then choose CA is not registered
with AWS IoT.
12.Under Certificate, select Choose file.
13.Double-click the ThingName.cert.pem file created in Step 10.
Replace ThingName with the name of the Thing obtained in Step 5.
14.Under Certificate Status, select Active.
15.Click Next to attach policies to the certificate.
16.Click Create to Create a policy. This opens a new tab.
17.Enter the policy name (e.g., IoTDevPolicy) and click Advanced mode.
18.Copy the following section into the console.
{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action":
"*", "Resource": "*" } ] }
Note: The examples in this document are intended only for development environments. All devices in
your end product must have credentials with privileges that authorize only intended actions on
specific resources. The specific permission policies can vary for your use case. Identify the
permission policies that best meet your business and security requirements.
19.Click Create to create the policy.
20.Go back to the Thing creation tab, and choose the policy created in the earlier step.
21.Click Create Thing.
22.In the AWS IoT Console, choose Settings, and then copy your account Endpoint string under Device data
endpoint.
23.Type the following AT command in the serial terminal to configure the endpoint:
AT+CONF EndPoint=<endpoint copied in step 22 >
24.Type the following AT command in the serial terminal to disable CIRRENT cloud ID error logs that will be
visible from the serial terminal when using the AWS flow.
AT+CONF CloudID=Disable
4.5 Connect the kit to Wi-Fi
You can either follow Section 4.5.1 or Section 4.5.2 to connect the IFW956810 CCM evaluation kit to Wi-Fi.
A Wi-Fi onboarding mechanism is required for IoT products that do not have a display to enter Wi-Fi SSID and
password. Use one of the following methods to connect the IFW956810 CCM evaluation kit to Wi-Fi.

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Getting started
Note: Connect the kit only to a 2.4-GHz Wi-Fi network.
4.5.1 Using Cirrent Wi-Fi onboarding app
The Cirrent cloud solution from Infineon provides an effective Wi-Fi onboarding service through the Cirrent Wi-
Fi onboarding app for any IoT product. The IFW956810 CCM evaluation kit supports onboarding through either
Bluetooth® LE or SoftAP.
1. Download and install the Cirrent Wi-Fi onboarding app from Google Play Store for Android or iOS App
Store for iOS on your mobile phone. Scan the following QR code relevant to your mobile device:
Android
iOS
2. Type the following command in the serial terminal on the PC.
AT+CONFMODE
You should receive the “OK CONFMODE Enabled”response from the module.
3. Open the Cirrent Wi-Fi onboarding app.
You can skip the sign in to perform Wi-Fi onboarding.
4. From the menu, select Configuration and then choose either BLE or Soft AP onboarding.
5. Follow the onscreen instructions and enter the Wi-Fi router’s SSID and password.
4.5.2 Using AT commands
AT commands provide a simple method of Wi-Fi onboarding in a development environment.
•Type the following commands in sequence in the terminal application:
AT+CONF SSID=<your router ssid>
AT+CONF Passphrase=<your router passphrase>
Note: Your local router’s SSID and passphrase are stored securely inside the IFW56810 CCM module.
While the SSID can be retrieved later (i.e., for debugging purposes), any attempt to retrieve the
passphrase will return an error.
4.6 Connect and interact with the AWS Cloud
Use the MQTT client in the AWS IoT Console to monitor the communication between your evaluation kit and
the AWS Cloud.
1. Navigate to the AWS IoT Console (https://console.aws.amazon.com/iot/).
2. In the navigation pane, choose Test and then click MQTT Test Client.
3. In Subscribe to a topic panel, enter #, and then click Subscribe.
Skip Section 4.6.1 if you used CIRRENT Wi-Fi onboarding app to connect the kit to Wi-Fi.
You will receive “OK 1 CONNECTED”in the serial terminal once the device is connected to the AWS IoT Core.

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Getting started
4.6.1 Connect
•Enter the following command in the serial terminal to establish a secure connection:
AT+CONNECT
After a short time, you will receive the message “OK 1 CONNECTED”.
4.6.2 Send data to the AWS Cloud
•Enter the following command in the serial terminal to send the “Hello World!” message:
AT+SEND data Hello World!
After a short time, you will receive the message “OK”. You should see the “Hello World!” message appear on the
AWS IoT Console under the topic “data”.
4.6.3 Receive data and commands from the cloud
By default, the device subscribes to a topic called “state”.
1. Do the following on the AWS IoT Console:
a) Select the MQTT client, and then select Publish to a topic.
b) Type state in Topic name field. Keep “Hello from the AWS IoT Console” message.
c) Click Publish.
2. Type the following command in the serial terminal:
AT+GET
You will receive the message “OK Hello from the AWS IoT Console”.

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Advanced AT commands
5Advanced AT commands
Wait for a response from the IFW956810 CCM evaluation kit in the serial terminal after entering each AT
command.
5.1 Publish to a non-default topic
•Enter the following commands in sequence in the serial terminal:
AT+CONF Topic1=/MyPubTopic
AT+SEND1
5.2 Subscribe to a non-default topic
1. Enter the following commands in sequence in the serial terminal:
AT+CONF Topic2=/MySubTopic
AT+SUBSCRIBE2
2. Do the following on the AWS IoT Console:
a) Select the MQTT client, and then select Publish to a topic.
b) Type MySubTopic in the Topic name field. Keep the “Hello from the AWS IoT Console” message.
c) Click Publish.
3. On your serial terminal, enter the following command:
AT+GET2
You will receive the message “OK Hello from the AWS IoT Console”.
Click here for a complete list of AT commands supported by the IFW956810 evaluation kit.

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Performing firmware over-the-air update
6Performing firmware over-the-air update
6.1 Prerequisites
1. Get the signed firmware image from Infineon. Contact Infineon Sales team for the firmware.
The firmware will be provided along with the signature hashing algorithm used and signature encryption
algorithm used. This information is required in subsequent steps.
2. Create an OTA update role in your account using the steps outlined here.
6.2 Create a firmware update job in AWS IoT
1. Open AWS IoT Console.
2. Click Manage, and then click Jobs.
3. Click Create job.
4. Select Create FreeRTOS OTA Update Job, and then click Next.
5. Provide a job name which is unique within your AWS account. Optionally, provide a description, and then
click Next.
6. From the Devices to update drop-down list, choose the Thing name with which the IFW56810 CCM
evaluation kit is registered in the account.
7. Select MQTT as the transfer protocol, and deselect HTTP if selected.
8. Select Use my custom signed file.
9. On the form that appears, enter the details from the Prerequisites section. Do the following:
•In the signature field, provide the base64-encoded signature for the image.
•From the Original hashing algorithm drop-down list, select the hashing algorithm provided by Infineon.
•From the Original encryption algorithm drop-down list, select the encryption algorithm provided by
Infineon.
•In the Path name of code signing certificate on device, field, enter NA.
10.Select Upload a new file.
11.Click Choose file and upload the image received from Infineon.
12.Do one of the following:
•Click Create S3 bucket to create a new bucket for the new uploaded image.
•Click Browse S3 to select an existing bucket in your account.
13.Under Path Name of file on device,enter NA if the image is not targeted as an executable file within a
filesystem.
14.From the File type drop-down list, select a value “101” to signify that it is an IFW56810 CCM firmware
update, and not a host firmware update.
15.Choose the OTA update role created above from the Role drop-down list under the IAM role section, and
then click Next.
16.Click Create Job.
If successful, the job will be listed with the state as “in progress”.

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Performing firmware over-the-air update
6.3 Monitor and apply the new firmware update for the IFW56810 module
The IFW56810 CCM module polls for firmware update jobs, receives and validates a job, and then enters a state
waiting for the update to be accepted. The host application receives an OTA event indicating that a new
firmware image is available for the IFW56810 CCM module.
The host application or the user can perform the following sequence by entering appropriate commands in the
serial terminal:
1. Query the state of the job:
AT+OTA?
You will receive a response “OK 1 New OTA proposed.”
2. Accept the new firmware update:
AT+OTA ACCEPT
The IFW56810 CCM module starts downloading the firmware update from the cloud.
3. Query the state of the job:
AT+OTA?
Downloading the image takes a few minutes to complete. During the OTA image download, this command
returns “OK OTA in progress”. You will receive an OTA event when the download is completed the image
signature is verified.
4. Check whether the received image is verified:
AT+EVENT?
You will receive the response “OK 5 OTA event New Image verified”.
5. Apply the new image received through OTA:
AT+OTA APPLY
The IFW56810 CCM module now reboots and boots up with the new image.
6. Connect back to the AWS IoT:
AT+CONNECT
The IFW56810 CCM module should now connect to AWS IoT, complete the self-test and mark the image as
valid. This prevents further rollback to the old image.
You can check the job status by going back to the AWS IoT Console. You should see the job status as completed.

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Setting up a serial terminal on the PC
7Setting up a serial terminal on the PC
Note: The following instructions are only for a Windows PC.
The IFW956810 CCM evaluation kit should be recognized by the PC when connected to it. If the device is
recognized, COM ports will be available in the Device Manager.
If the device is not recognized, you need to install the FTDI USB to UART Bridge Virtual Communication Port
drivers from this link. For more information, see FAQs.
7.1 Determine the COM port number
•Determine the COM port number from the Device Manager.
Figure 5 COM port

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Setting up a serial terminal on the PC
7.2 Serial terminal settings
1. Open a terminal such as Tera Term.
2. Choose the higher of the COM port numbers for the IFW956810 CCM evaluation kit.
3. Select Set Up > Serial port.
4. Select the settings as follows:
5. Select Set Up > Terminal.
6. Do the following:
•Set End of Line as Line Feed.
•Enable Local Echo to view the commands that you type on the terminal.

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FAQs
8FAQs
1. Two COM ports enumerated when the kit is connected
−The IFW956810 CCM evaluation kit has a FT2232H chip capable of supporting USB to dual-channel UART
(USB serial converter A and USB serial converter B). Only USB serial converter B is configured in the kit for
USB-to-UART conversion. Therefore, use the higher-number COM port among the enumerated COM ports
to communicate with the kit.
2. Errors appear on the terminal when commands are entered
For example:
AT+SUBCRIBE
ERR01 Invalid cmd
−Make sure that you have typed the command correctly.
−Note the error codes and refer to the AWS IoT ExpressLink Programmer's Guide for details of the error
code and to determine the cause.
3. BLE/SoftAP onboarding does not work with the Cirrent app
−Check if CONFMODE was enabled using the AT+CONFMODE command.
4. Executing the AT+CONNECT command results in ERR 14 UNABLE TO CONNECT
The AT+CONNECT command first connects to Wi-Fi if not already connected and then connects to the AWS
IoT Core.
−Check the Wi-Fi connection.
−Check the entered Wi-Fi credentials.
−Type the following command to verify whether the kit connects to Wi-Fi:
AT+DIAG PING 8.8.8.8
If the connection is successful, the device will respond with “OK Received ping response in <ping latency
ms>”.
−If the Wi-Fi connection test is successful, check the AWS IoT connection.
−Check the device certificate uploaded to the AWS IoT Core in Section 4.4 .
5. How to change the Wi-Fi network connected
−Execute AT+DISCONNECT on the serial terminal to disconnect from the current Wi-Fi network.
−See Section 4.5 to configure the required Wi-Fi credentials.