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Getting Started Guide

This guide contains instructions on how to setup, build and run the demo without use of the security features of the ESP32-C3 i.e. without enabling the DS peripheral, flash encryption and Secure Boot. The guide is meant to provide the user with a friendly first-use experience.

Once completed, one can progress to the Use Security Features guide.

1 Pre-requisites
 1.1 Hardware Requirements
 1.2 Software Requirements

2 Demo setup
 2.1 Setup AWS IoT Core
 2.2 Configure the project with the AWS IoT Thing Name and AWS device Endpoint
 2.3 Provision the ESP32-C3 with the private key, device certificate and CA certificate in Development Mode

3 Build and flash the demo project

4 Monitoring the demo

5 Perform firmware Over-the-Air Updates with AWS IoT
 5.1 Setup pre-requisites for OTA cloud resources
 5.2 Provision the project with the code-signing public key certificate
 5.3 Build an application binary with a higher version number, to be downloaded and activated on the device
 5.4 Build and flash the device with a binary with a lower version number
 5.5 Upload the binary with the higher version number (created in step 5.3) and create an OTA Update Job
 5.6 Monitor OTA

6 Run FreeRTOS Integration Test
 6.1 Prerequisite
 6.2 Steps for each test case

7 Run AWS IoT Device Tester
 7.1 Prerequisite
 7.2 Download AWS IoT Device Tester
 7.3 Configure AWS IoT Device Tester
 7.4 Running the FreeRTOS qualification 2.0 suite

1 Pre-requisites

1.1 Hardware Requirements

  • Micro USB cable.
  • ESP32-C3, ESP32-C3, or a, ESP32-S3 board (e.g ESP32-C3-DevKitC-02).
  • Personal Computer with Linux, MacOS, or Windows.
  • WiFi access point with access to the internet.

1.2 Software Requirements

  • ESP-IDF: This is used to configure, build, and flash the project. To setup for the ESP32-C3, follow Espressif's Getting Started Guide for the ESP32-C3.

    • The versions of ESP-IDF supported by this repository are the ones supported by Espressif's GitHub Build Action

    • To see the currently supported ESP-IDF versions please refer to the list in build.yml.

      NOTE: Please do not submit a bug report due to build errors or demo failures when using an unsupported version of ESP-IDF.

  • Python3 and the Package Installer for Python pip to use the AWS CLI to import certificates and perform OTA Job set up. Pip is included when you install from Python 3.10.

  • OpenSSL to create the OTA signing key and certificate. If you have git installed on your machine, you can also use the openssl.exe that comes with the git installation.

  • AWS CLI Interface to import your code-signing certificate, private key, and certificate chain into the AWS Certificate Manager, and to set up an OTA firmware update job. Refer to the AWS User Guide for Installing or updating the latest version of the AWS CLI here for installation instructions. After installation, follow the steps in Configuration basics to configure the basic settings (security credentials, the default AWS output format and the default AWS Region) that AWS CLI uses to interact with AWS. (If you don't have an AWS account and user, follow steps 1 and 2 in the AWS IoT Core Setup Guide below before following the Configuration basics for the AWS CLI.)

2 Demo setup

2.1 Setup AWS IoT Core

To setup AWS IoT Core, follow the AWS IoT Core Setup Guide. The guide shows you how to sign up for an AWS account, create a user, and register your device with AWS IoT Core.

After you have followed the instructions in the AWS IoT Core Setup Guide, you will have created a device Endpoint, an AWS IoT thing, a PEM-encoded device certificate, a PEM-encoded private key, and a PEM-encoded root CA certificate. (An explanation of these entities is given in the AWS IoT Core Setup Guide.)The AWS Root CA certificate can also be downloaded here. Your ESP23-C3 board must now be provisioned with these entities in order for it to connect securely with AWS IoT Core.

2.2 Configure the project with the AWS IoT Thing Name and AWS device Endpoint

The demo will connect to the AWS IoT device Endpoint that you configure here.

  1. From a terminal/command prompt navigate to the root directory of this repository
  2. Run idf.py --list-targets
    • The directly supported chips are the esp32c3, esp32s3, and esp32c2
  3. Set the corret chip type by running idf.py set-target <CHIP_TYPE>;
  4. run idf.py menuconfig. This assumes the ESP-IDF environment is exported-- i.e. that export.bat/export.sh, which can be found under the ESP-IDF directory, has been run, or that you are using the ESP-IDF command prompt/terminal. For Visual Studio (VS) Code users who are using the Espressif IDF extension, do ->View->Command Palette->Search for ESP-IDF: SDK Configuration editor (menuconfig) and select the command. The SDK Configuration editor window should pop up after a moment.
    • Note: If running menuconfig from within a VS Code command prompt, 'j' and 'k' may have to be used in place of the 'up' and 'down' arrow keys. Alternately, one can use a command prompt/terminal outside of the VS Code editor.
  5. Select Featured FreeRTOS IoT Integration from the menu.
  6. Set Endpoint for MQTT Broker to use to your AWS device Endpoint.
  7. Set Port for MQTT Broker to use to 8883.
  8. Set Thing name to your Thing Name.
  9. Go back to main menu, Save and Exit.

2.3 Provision the ESP32-C3 with the private key, device certificate and CA certificate in Development Mode

The key and certificates which will be used to establish a secure TLS connection will be stored in a special flash partition. Run the following command to create and flash the certificate partition.

The following values will be needed:

  • PORT: The serial port to which the ESP32-C3 board is connected. You can refer to this guide for information about finding what value this should be.

  • CA_CERT_FILEPATH: The file path to the PEM-encoded root CA certificate,

  • DEVICE_CERT_FILEPATH: The file path to the PEM-encoded device certificate

  • PRIVATE_KEY_FILEPATH: The file path to the PEM-encoded private key.

  • KEY_ALG_INFO: The type of key algorithm being used. In the format Algorithm Size,

python managed_components/espressif__esp_secure_cert_mgr/tools/configure_esp_secure_cert.py -p PORT --keep_ds_data_on_host --ca-cert CA_CERT_FILEPATH --device-cert DEVICE_CERT_FILEPATH --private-key PRIVATE_KEY_FILEPATH --target_chip CHIP_TYPE --secure_cert_type cust_flash --priv_key_algo KEY_ALG_INFO

NOTE: For convenience sake, you could place your key and certificate files under the main/certs directory.

3 Build and flash the demo project

Before you build and flash the demo project, if you are setting up the ESP32-C3 for the first time, the board will have to be provisioned with Wi-Fi credentials to be able to use your Wi-Fi network to connect to the internet. This can be done via BLE or SoftAP. BLE is the default, but can be changed by running idf.py menuconfig then selecting: Featured FreeRTOS IoT Integration -> Show provisioning QR code -> Provisioning Transport method.

Espressif provides BLE and SoftAP provisioning mobile apps which are available on the Google Play Store for Android or the Apple App Store for iOS. Download the appropriate app to your phone before proceeding.

Run the following command to build and flash the demo project:

NOTE The list of chip types can be found by running idf.py list-targets The directly supported chips are the ones listed in build.yml

  • Please do not submit a bug report due to build errors or demo failures when using an unsupported ESP chip.
idf.py -p PORT flash monitor;

Replace PORT with the serial port to which the ESP32-C3 is connected.

If you are setting up the ESP32-C3 for the first time, the device will go though the Wi-Fi provisioning workflow and you will have to use the app you previously downloaded to scan the QR code and follow the instructions that follow. Once the device is provisioned successfully with the required Wi-Fi credentials, the demo will proceed. If previously Wi-Fi provisioned, the device will not go through the Wi-Fi provisioning workflow again.

Note: If the ESP32-C3 was previously Wi-Fi provisioned, and you are on a different network and wish to re-provision with new network credentials, you will have to erase the nvs flash partition where the Wi-Fi credentials are stored, otherwise the device will presume that it has already been provisioned. In this situation, use the following command to erase the nvs partition.

parttool.py -p PORT erase_partition --partition-name=nvs

4 Monitoring the demo

  1. On the serial terminal console, confirm that the TLS connection was successful and that MQTT messages are published.
I (1843) core_mqtt_agent_network_manager: WiFi connected.
I (1843) app_wifi: Connected with IP Address:10.0.0.9
I (1843) esp_netif_handlers: sta ip: 10.0.0.9, mask: 255.255.255.0, gw: 10.0.0.1
I (1863) ota_over_mqtt_demo:  Received: 0   Queued: 0   Processed: 0   Dropped: 0
I (2843) coreMQTT: Packet received. ReceivedBytes=2.
I (2843) coreMQTT: CONNACK session present bit not set.
I (2843) coreMQTT: Connection accepted.
I (2843) coreMQTT: Received MQTT CONNACK successfully from broker.
I (2853) coreMQTT: MQTT connection established with the broker.
I (2863) coreMQTT: Session present: 0

I (2863) core_mqtt_agent_network_manager: coreMQTT-Agent connected.
I (2873) MQTT: coreMQTT-Agent connected.
I (2873) sub_pub_unsub_demo: coreMQTT-Agent connected.
I (2883) temp_sub_pub_demo: coreMQTT-Agent connected.
I (2893) ota_over_mqtt_demo: coreMQTT-Agent connected. Resuming OTA agent.
I (2893) ota_over_mqtt_demo:  Received: 0   Queued: 0   Processed: 0   Dropped: 0
I (2903) sub_pub_unsub_demo: Task "SubPub0" sending subscribe request to coreMQTT-Agent for topic filter: /filter/SubPub0 with id
1
I (3153) coreMQTT: Packet received. ReceivedBytes=3.
I (3153) temp_pub_sub_demo: Received subscribe ack for topic /filter/Publisher0 containing ID 1
I (3163) temp_pub_sub_demo: Sending publish request to agent with message "{"temperatureSensor":{ "taskName": "Publisher0" , "temperatureValue": 24.099600, "iteration": 0}}" on topic "/filter/Publisher0"
I (3183) temp_pub_sub_demo: Task Publisher0 waiting for publish 0 to complete.
  1. On the AWS IoT console, select "Test" then select "MQTT test client". Under "Subscribe to a topic", type "#". (# is used to select all topics. You can also enter a specific topic such as /filter/Publisher0.) Click on "Subscribe", then confirm that the MQTT messages from the device are received.
  2. To change the LED power state, under "Publish to a topic" publish one of the following JSON payloads to the /filter/TempSubPubLED topic:

To turn the LED on:

{
  "led": {
    "power": 1
  }
}

To turn the LED off:

{
  "led": {
    "power": 0
  }
}

5 Perform firmware Over-the-Air Updates with AWS IoT

This demo uses the OTA client library and the AWS IoT OTA service for code signing and secure download of firmware updates.

5.1 Setup pre-requisites for OTA cloud resources

Before you create an OTA job, the following resources are required. This is a one time setup required for performing OTA firmware updates. Make a note of the names of the resources you create, as you will need to provide them during subsequent configuration steps.

  • An Amazon S3 bucket to store your updated firmware. S3 is an AWS Service that enables you to store files in the cloud that can be accessed by you or other services. This is used by the OTA Update Manager Service to store the firmware image in an S3 “bucket” before sending it to the device. Create an Amazon S3 Bucket to Store Your Update.

  • An OTA Update Service role. By default, the OTA Update Manager cloud service does not have permission to access the S3 bucket that will contain the firmware image. An OTA Service Role is required to allow the OTA Update Manager Service to read and write to the S3 bucket. Create an OTA Update Service role.

  • An OTA user policy. An OTA User Policy is required to give your AWS account permissions to interact with the AWS services required for creating an OTA Update. Create an OTA User Policy.

  • Create a code-signing certificate. The demos support a code-signing certificate with an ECDSA P-256 key and SHA-256 hash to perform OTA updates.

  • Grant access to Code Signing for AWS IoT.

5.2 Provision the project with the code-signing public key certificate

The code-signing public key certificate will be used by the application binary, i.e. the demo, to authenticate a binary that was downloaded for an update. (This downloaded firmware would have been signed by the certificate's corresponding private key.)

Copy the public key certificate that you would have created in the 'Create a code-signing certificate' step to 'main/certs/aws_codesign.crt'

The demo will read the certificate 'aws_codesign.crt' from your host filesystem and save it in memory.

5.3 Build an application binary with a higher version number, to be downloaded and activated on the device

To perform an OTA firmware update, you must go through these steps:

  1. Increment the version of the binary and create the signed binary image.
  2. Upload this image to an S3 bucket and create an OTA Update Job on the AWS IoT console.
  3. Restore the original version (lower version number) and flash this to the device.

The version of the new image must be later than the current image on the board or else OTA will not proceed.

The OTA Update Job will send a notification to an MQTT topic that the device will be listening to. When it receives an OTA update notification, the device will then start downloading the new firmware.

Create a binary with a higher version number.

  1. Run idf.py menuconfig.
  2. Select Featured FreeRTOS IoT Integration from the menu.
  3. Under Enable OTA demo, go to OTA demo configurations.
  4. Set the Application version build number to '1'.
  5. Go back to main menu, Save and exit.
  6. Run the following command to only build the demo project.
idf.py build

If successful, there will be a new binary under the 'build' directory - build/FeaturedFreeRTOSIoTIntegration.bin. Copy this binary to another location, otherwise it will be overwritten in the next step.

5.4 Build and flash the device with a binary with a lower version number

  1. Follow the same steps in 5.3 starting with running idf.py menuconfig, but this time, set the Application version build number to '0'.
  2. Build and flash this new application binary with a lower version number.
idf.py -p PORT flash monitor

5.5 Upload the binary with the higher version number (created in step 5.3) and create an OTA Update Job

  1. In the navigation pane of the AWS IoT console, choose 'Manage', and then choose 'Jobs'. Choose 'Create a job'.
  2. Next to 'Create a FreeRTOS Over-the-Air (OTA) update job', choose `Create FreeRTOS OTA update job'. Provide a name for the job and click on 'Next'.
  3. You can deploy an OTA update to a single device or a group of devices. Under 'Devices to update', select the Thing you created earlier. You can find it listed under AWS IoT->Manage->Things. If you are updating a group of devices, select the check box next to the thing group associated with your devices.
  4. Under 'Select the protocol for file transfer', choose 'MQTT'.
  5. Under 'Sign and choose your file', choose 'Sign a new file for me'.
  6. Under 'Code signing profile', choose 'Create a new profile'.
  7. In 'Create a code signing profile':
    1. Type in a name for this profile.
    2. For the Device hardware platform, select: 'ESP32-DevKitC'.
    3. Under Code signing certificate, choose 'Select an existing certificate', then choose the certificate that you created with the AWS CLI earlier and registered with AWS ACM (you can use the ARN to identify it).
    4. Under 'Path name of code signing certificate on device', enter '/'. (This is not applicable for the ESP32-C3 and hence the / is only a filler.)
    5. Click 'Create'. Confirm that the code signing profile was created successfully.
  8. Back on the FreeRTOS OTA Job console:
    1. Under 'Code signing profile', select the code signing profile that was just created from the drop down list.
    2. Under 'File', choose 'Upload a new file', then click 'Choose file'. A file browser pops up. Select the signed binary image with the higher version number.
    3. Under 'File upload location in S3', click 'Browse S3', then select the S3 bucket that you created earlier for this job. Click 'Choose'.
    4. Under 'Path name of file on device', type 'NA'.
    5. Under 'IAM role for OTA update job', choose the role that you created earlier for the OTA update from the drop down list.
    6. Click 'Next', then click on 'Create job'. Confirm that the job was created successfully. Note: If this fails to create an OTA job, make sure the role for this OTA job update has the correct permissions (policies) attached.

5.6 Monitor OTA

Once the job is created successfully, the demo should start downloading the firmware in chunks. For example:

I (196573) ota_over_mqtt_demo: OTA Event processing completed. Freeing the event buffer to pool.
I (196583) AWS_OTA: Current State=[WaitingForFileBlock], Event=[ReceivedFileBlock], New state=[WaitingForFileBlock]
I (196583) ota_over_mqtt_demo:  Received: 160   Queued: 160   Processed: 158   Dropped: 0
I (196603) AWS_OTA: Received valid file block: Block index=157, Size=4096
I (196613) AWS_OTA: Number of blocks remaining: 130
I (196623) ota_over_mqtt_demo: OTA Event processing completed. Freeing the event buffer to pool.
I (196623) AWS_OTA: Current State=[WaitingForFileBlock], Event=[ReceivedFileBlock], New state=[WaitingForFileBlock]
I (196633) AWS_OTA: Received valid file block: Block index=159, Size=4096
I (196653) AWS_OTA: Number of blocks remaining: 129
I (196653) ota_over_mqtt_demo: OTA Event processing completed. Freeing the event buffer to pool.
I (196653) AWS_OTA: Current State=[WaitingForFileBlock], Event=[ReceivedFileBlock], New state=[WaitingForFileBlock]
I (197603) ota_over_mqtt_demo:  Received: 160   Queued: 160   Processed: 160   Dropped: 0
I (198603) ota_over_mqtt_demo:  Received: 160   Queued: 160   Processed: 160   Dropped: 0

Once all the firmware image chunks are downloaded and the signature is validated, the device reboots with the new image. See the OTA section in the Featured FreeRTOS IoT Integration page for the ESP32-C3 on FreeRTOS.org for more details. You can see the new version number of the demo binary in the terminal console output. Look for the string "Application version"

I (336900) AWS_OTA: Number of blocks remaining: 1
I (336900) ota_over_mqtt_demo: OTA Event processing completed. Freeing the event buffer to pool.
I (336900) AWS_OTA: Current State=[WaitingForFileBlock], Event=[ReceivedFileBlock], New state=[WaitingForFileBlock]
I (336910) AWS_OTA: Received valid file block: Block index=282, Size=704
I (336920) AWS_OTA: Received final block of the update.
I (337450) AWS_OTA: Signature verification succeeded.
I (337450) AWS_OTA: Received entire update and validated the signature.
I (337450) ota_over_mqtt_demo:  Received: 283   Queued: 283   Processed: 282   Dropped: 0
I (338460) ota_over_mqtt_demo:  Received: 283   Queued: 283   Processed: 282   Dropped: 0
I (339460) ota_over_mqtt_demo:  Received: 283   Queued: 283   Processed: 282   Dropped: 0
I (339880) coreMQTT: Publishing message to $aws/things/thing_esp32c3_nonOta/jobs/AFR_OTA-c3-27340/update.

I (340040) coreMQTT: Packet received. ReceivedBytes=2.
I (340050) coreMQTT: Ack packet deserialized with result: MQTTSuccess.
I (340050) coreMQTT: State record updated. New state=MQTTPublishDone.
I (340050) coreMQTT: Packet received. ReceivedBytes=96.
I (340060) coreMQTT: De-serialized incoming PUBLISH packet: DeserializerResult=MQTTSuccess.
I (340070) coreMQTT: State record updated. New state=MQTTPublishDone.
W (340080) core_mqtt_agent_manager: WARN:  Received an unsolicited publish from topic $aws/things/thing_esp32c3_nonOta/jobs/AFR_OTA-c3-27340/update/accepted
I (340070) ota_over_mqtt_demo: Sent PUBLISH packet to broker $aws/things/thing_esp32c3_nonOta/jobs/AFR_OTA-c3-27340/update to broker.


I (340100) ota_over_mqtt_demo: Received OtaJobEventActivate callback from OTA Agent.
I (340110) esp_image: segment 0: paddr=001b0020 vaddr=3c0e0020 size=2ced8h (184024) map
I (340140) esp_image: segment 1: paddr=001dcf00 vaddr=3fc91800 size=03118h ( 12568)
I (340150) esp_image: segment 2: paddr=001e0020 vaddr=42000020 size=d86e8h (886504) map
I (340260) esp_image: segment 3: paddr=002b8710 vaddr=3fc94918 size=0048ch (  1164)
I (340260) esp_image: segment 4: paddr=002b8ba4 vaddr=40380000 size=116dch ( 71388)
I (340280) esp_image: segment 5: paddr=002ca288 vaddr=50000010 size=00010h (    16)
I (340280) esp_image: segment 0: paddr=001b0020 vaddr=3c0e0020 size=2ced8h (184024) map
I (340310) esp_image: segment 1: paddr=001dcf00 vaddr=3fc91800 size=03118h ( 12568)
I (340310) esp_image: segment 2: paddr=001e0020 vaddr=42000020 size=d86e8h (886504) map
I (340430) esp_image: segment 3: paddr=002b8710 vaddr=3fc94918 size=0048ch (  1164)
I (340430) esp_image: segment 4: paddr=002b8ba4 vaddr=40380000 size=116dch ( 71388)
I (340440) esp_image: segment 5: paddr=002ca288 vaddr=50000010 size=00010h (    16)
I (340490) ota_over_mqtt_demo:  Received: 283   Queued: 283   Processed: 283   Dropped: 0
I (341000) wifi:state: run -> init (0)
I (341000) wifi:pm stop, total sleep time: 271785664 us / 337788344 us

W (341000) wifi:<ba-del>idx
W (341000) wifi:<ba-del>idx
I (341000) wifi:new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
I (341010) core_mqtt_agent_manager: WiFi disconnected.
I (341010) app_wifi: Disconnected. Connecting to the AP again...
E (341020) esp-tls-mbedtls: read error :-0x004C:
I (341020) sub_pub_unsub_demo: coreMQTT-Agent disconnected. Preventing coreMQTT-Agent commands from being enqueued.
I (341030) ota_over_mqtt_demo: coreMQTT-Agent disconnected. Suspending OTA agent.
I (341040) core_mqtt_agent_manager: coreMQTT-Agent disconnected.
I (341050) temp_sub_pub_and_led_control_demo: coreMQTT-Agent disconnected. Preventing coreMQTT-Agent commands from being enqueued.
I (341060) wifi:flush txq
I (341060) wifi:stop sw txq
I (341070) wifi:lmac stop hw txq
ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x3 (RTC_SW_SYS_RST),boot:0xc (SPI_FAST_FLASH_BOOT)
Saved PC:0x403805d8
0x403805d8: esp_restart_noos_dig at C:/Users/wallit/Work/.espressif/frameworks/esp-idf-v4.4/components/esp_system/esp_system.c:46 (discriminator 1)

SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0x16b4
load:0x403ce000,len:0x930
load:0x403d0000,len:0x2dac
entry 0x403ce000
I (35) boot: ESP-IDF v4.4 2nd stage bootloader
I (35) boot: compile time 15:33:46
I (35) boot: chip revision: 3
I (37) boot.esp32c3: SPI Speed      : 80MHz
I (41) boot.esp32c3: SPI Mode       : DIO
I (46) boot.esp32c3: SPI Flash Size : 4MB
I (51) boot: Enabling RNG early entropy source...
I (56) boot: Partition Table:
I (60) boot: ## Label            Usage          Type ST Offset   Length
I (67) boot:  0 esp_secure_cert  unknown          3f 06 0000d000 00006000
I (75) boot:  1 nvs              WiFi data        01 02 00013000 00006000
I (82) boot:  2 otadata          OTA data         01 00 00019000 00002000
I (89) boot:  3 phy_init         RF data          01 01 0001b000 00001000
I (97) boot:  4 ota_0            OTA app          00 10 00020000 00190000
I (104) boot:  5 ota_1            OTA app          00 11 001b0000 00190000
I (112) boot:  6 storage          WiFi data        01 02 00340000 00010000
I (119) boot:  7 nvs_key          NVS keys         01 04 00350000 00001000
I (127) boot: End of partition table
I (178) esp_image: segment 0: paddr=001b0020 vaddr=3c0e0020 size=2ced8h (184024) map
I (206) esp_image: segment 1: paddr=001dcf00 vaddr=3fc91800 size=03118h ( 12568) load
I (209) esp_image: segment 2: paddr=001e0020 vaddr=42000020 size=d86e8h (886504) map
I (345) esp_image: segment 3: paddr=002b8710 vaddr=3fc94918 size=0048ch (  1164) load
I (345) esp_image: segment 4: paddr=002b8ba4 vaddr=40380000 size=116dch ( 71388) load
I (364) esp_image: segment 5: paddr=002ca288 vaddr=50000010 size=00010h (    16) load
I (369) boot: Loaded app from partition at offset 0x1b0000
I (369) boot: Disabling RNG early entropy source...
I (384) cpu_start: Pro cpu up.
I (392) cpu_start: Pro cpu start user code
I (393) cpu_start: cpu freq: 160000000
I (393) cpu_start: Application information:
I (395) cpu_start: Project name:     FeaturedFreeRTOSIoTIntegration
I (402) cpu_start: App version:      v202204.00-dirty
I (408) cpu_start: Compile time:     Apr 29 2022 15:33:03
I (414) cpu_start: ELF file SHA256:  5da757c870ca6788...
I (420) cpu_start: ESP-IDF:          v4.4
I (425) heap_init: Initializing. RAM available for dynamic allocation:
I (432) heap_init: At 3FCACB20 len 000134E0 (77 KiB): DRAM
I (438) heap_init: At 3FCC0000 len 0001F060 (124 KiB): STACK/DRAM
I (445) heap_init: At 50000020 len 00001FE0 (7 KiB): RTCRAM
I (452) spi_flash: detected chip: generic
I (456) spi_flash: flash io: dio
I (460) sleep: Configure to isolate all GPIO pins in sleep state
I (467) sleep: Enable automatic switching of GPIO sleep configuration
I (474) coexist: coexist rom version 9387209
I (479) cpu_start: Starting scheduler.
I (484) main:
...
I (884) app_driver: Initializing Temperature sensor
I (914) ota_over_mqtt_demo: OTA over MQTT demo, Application version 0.0.1
I (924) temp_sub_pub_and_led_control_demo: Sending subscribe request to agent for topic filter: /filter/TempSubPubLED with id 1
I (934) AWS_OTA: otaPal_GetPlatformImageState
I (944) esp_ota_ops: aws_esp_ota_get_boot_flags: 1
I (944) esp_ota_ops: [1] aflags/seq:0x1/0x2, pflags/seq:0x2/0x1
I (954) AWS_OTA: Current State=[RequestingJob], Event=[Start], New state=[RequestingJob]
I (964) ota_over_mqtt_demo:  Received: 0   Queued: 0   Processed: 0   Dropped: 0
I (934) pp: pp rom version: 9387209
I (974) net80211: net80211 rom version: 9387209
I (994) wifi:wifi driver task: 3fcbc2c0, prio:23, stack:6656, core=0
I (994) system_api: Base MAC address is not set
I (994) system_api: read default base MAC address from EFUSE
I (1004) wifi:wifi firmware version: 7679c42
I (1004) wifi:wifi certification version: v7.0
I (1004) wifi:config NVS flash: enabled
I (1004) wifi:config nano formating: disabled
I (1014) wifi:Init data frame dynamic rx buffer num: 32
I (1014) wifi:Init management frame dynamic rx buffer num: 32
I (1024) wifi:Init management short buffer num: 32
I (1024) wifi:Init dynamic tx buffer num: 32
I (1034) wifi:Init static tx FG buffer num: 2
I (1034) wifi:Init static rx buffer size: 1600
I (1044) wifi:Init static rx buffer num: 10
I (1044) wifi:Init dynamic rx buffer num: 32
I (1044) wifi_init: rx ba win: 6
I (1054) wifi_init: tcpip mbox: 32
I (1054) wifi_init: udp mbox: 6
I (1064) wifi_init: tcp mbox: 6
I (1064) wifi_init: tcp tx win: 5744
I (1064) wifi_init: tcp rx win: 5744
I (1074) wifi_init: tcp mss: 1440
I (1074) wifi_init: WiFi IRAM OP enabled
I (1084) wifi_init: WiFi RX IRAM OP enabled
W (1084) BTDM_INIT: esp_bt_mem_release not implemented, return OK
I (1094) wifi_prov_scheme_ble: BT memory released
I (1094) app_wifi: Already provisioned, starting Wi-Fi STA
W (1104) BTDM_INIT: esp_bt_mem_release not implemented, return OK
I (1114) wifi_prov_scheme_ble: BTDM memory released
I (1114) phy_init: phy_version 907,3369105-dirty,Dec  3 2021,14:55:12
I (1164) wifi:mode : sta (84:f7:03:5f:f1:40)
I (1164) wifi:enable tsf
I (1164) wifi:new:<6,0>, old:<1,0>, ap:<255,255>, sta:<6,0>, prof:1
I (1164) wifi:state: init -> auth (b0)
I (1164) wifi:state: auth -> assoc (0)
I (1174) wifi:state: assoc -> run (10)
W (1184) wifi:<ba-add>idx:0 (ifx:0, 8c:6a:8d:fc:31:8e), tid:0, ssn:0, winSize:64
I (1194) wifi:connected with Stranger 5, aid = 12, channel 6, BW20, bssid = 8c:6a:8d:fc:31:8e
I (1194) wifi:security: WPA2-PSK, phy: bgn, rssi: -55
I (1194) wifi:pm start, type: 1

I (1194) wifi:set rx beacon pti, rx_bcn_pti: 14, bcn_timeout: 14, mt_pti: 25000, mt_time: 10000
W (1204) wifi:<ba-add>idx:1 (ifx:0, 8c:6a:8d:fc:31:8e), tid:6, ssn:0, winSize:64
I (1284) wifi:BcnInt:102400, DTIM:1
I (1924) core_mqtt_agent_manager: WiFi connected.
I (1924) app_wifi: Connected with IP Address:10.0.0.140
I (1924) esp_netif_handlers: sta ip: 10.0.0.140, mask: 255.255.255.0, gw: 10.0.0.1
I (1974) ota_over_mqtt_demo:  Received: 0   Queued: 0   Processed: 0   Dropped: 0
I (3104) ota_over_mqtt_demo:  Received: 0   Queued: 0   Processed: 0   Dropped: 0
I (3254) coreMQTT: Packet received. ReceivedBytes=2.
I (3254) coreMQTT: CONNACK session present bit not set.
I (3254) coreMQTT: Connection accepted.
I (3254) coreMQTT: Received MQTT CONNACK successfully from broker.
I (3264) coreMQTT: MQTT connection established with the broker.
I (3274) core_mqtt_agent_manager: Session present: 0

I (3274) sub_pub_unsub_demo: coreMQTT-Agent connected.
I (3284) ota_over_mqtt_demo: coreMQTT-Agent connected. Resuming OTA agent.
I (3294) core_mqtt_agent_manager: coreMQTT-Agent connected.
I (3294) temp_sub_pub_and_led_control_demo: coreMQTT-Agent connected.
I (3304) sub_pub_unsub_demo: Task "SubPub0" sending subscribe request to coreMQTT-Agent for topic filter: /filter/SubPub0 with id 1
I (3444) coreMQTT: Packet received. ReceivedBytes=3.
I (3444) ota_over_mqtt_demo: Subscribed to topic $aws/things/thing_esp32c3_nonOta/jobs/notify-next.

6 Run FreeRTOS Integration Test

6.1 Prerequisite

  • Follow the OTA update with AWS IoT Guide to create an OTA update and verify the digital signature, checksum and version number of the new image. If firmware update is verified, you can run the tests on your device.
  • Run idf.py menuconfig.
  • Under Featured FreeRTOS IoT Integration, choose Run qualification test.
  • Under Component config -> Unity unit testing library, choose Include Unity test fixture.

Note: The log of module esp_ota_ops, AWS_OTA and esp-tls-mbedtls will be disabled when running the qualification test. You can change the log level by esp_log_level_set in main.c.

6.2 Steps for each test case

  1. Device Advisor Test

    • Create a Device Advisor test suite in the console.
    • Find the Device Advisor test endpoint for your account
    • Under Featured FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Execution Test Configurations, choose Device Advisor Test.
    • Under FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Parameter Configurations
      • Set Endpoint for MQTT Broker to use to Device Advisor test endpoint
      • Set Thing Name for Device Advisor Test/OTA end-to-end Test to AWS IoT Thing under test.
    • Build and run.
    • See Device Advisor test result in the console.

  2. MQTT Test

    • Under Featured FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Execution Test Configurations, choose MQTT Test.

    • Under FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Parameter Configurations

      • Set Endpoint for MQTT Broker to use to your AWS IoT endpoint
      • Set Client Identifier for MQTT Test

    • Build and run.

    • See test result on target output.

    • Example output

      I (821) qual_main: Run qualification test.
...
-----------------------
8 Tests 0 Failures 0 Ignored
OK
I (84381) qual_main: End qualification test.

  3. Transport Interface Test

    • Follow Run The Transport Interface Test to start an echo server.
    • Under Featured FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Execution Test Configurations, choose Transport Interface Test.
    • Under FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Parameter Configurations
    • Set Echo Server Domain Name/IP for Transport Interface Test
    • Set Port for Echo Server to use
    • Set ECHO_SERVER_ROOT_CA / TRANSPORT_CLIENT_CERTIFICATE and TRANSPORT_CLIENT_PRIVATE_KEY in test_param_config.h.
    • Build and run.
    • See test result on target output.
    • Example output
    I (855) qual_main: Run qualification test.
...
-----------------------
14 Tests 0 Failures 0 Ignored
OK
I (612755) qual_main: End qualification test.

  4. OTA PAL Test

    • Under Featured FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Execution Test Configurations, choose OTA PAL Test.
    • Build and run.
    • See test result on target output.
    • Example output
    I (905) qual_main: Run qualification test.
...
-----------------------
15 Tests 0 Failures 0 Ignored
OK
I (113755) qual_main: End qualification test.

  5. Core PKCS11 Test

    • Under Featured FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Execution Test Configurations, choose CorePKCS#11 Test.
    • Build and run.
    • See test result on target output.
    • Example output
    I (858) qual_main: Run qualification test.
...
-----------------------
17 Tests 0 Failures 0 Ignored
OK
I (7518) qual_main: End qualification test.

7 Run AWS IoT Device Tester

This repository can be tested using AWS IoT Device Tester for FreeRTOS (IDT). IDT is a downloadable tool that can be used to exercise a device integration with FreeRTOS to validate functionality and compatibility with Amazon IoT cloud. Passing the test suite provided by IDT is also required to qualify a device for the Amazon Partner Device Catalogue.

IDT runs a suite of tests that include testing the device's transport interface layer implementation, PKCS11 functionality, and OTA capabilities. In IDT test cases, the IDT binary will make a copy of the source code, update the header files in the project, then compile the project and flash the resulting image to your board. Finally, IDT will read serial output from the board and communicate with the AWS IoT cloud to ensure that test cases are passing.

7.1 Prerequisite

  • Follow the OTA update with AWS IoT Guide to create an OTA update and verify the digital signature, checksum and version number of the new image. If firmware update is verified, you can run the tests on your device.
  • Run idf.py menuconfig.
  • Under Featured FreeRTOS IoT Integration, choose Run qualification test.
  • Under Component config -> Unity unit testing library, choose Include Unity test fixture.
  • Under Featured FreeRTOS IoT Integration -> Qualification Test Configurations -> Qualification Execution Test Configurations, DISABLE all the tests.
  • Run idf.py fullclean to clear local CMAKE cache.

Note: The log of module esp_ota_ops, AWS_OTA and esp-tls-mbedtls will be disabled when running the qualification test. You can change the log level by esp_log_level_set in main.c.

7.2 Download AWS IoT Device Tester

The latest version of IDT can be downloaded from the here. This repository has been qualified by IDT v4.6.0 and test suite version 2.3.0 for FreeRTOS 202210-LTS.

7.3 Configure AWS IoT Device Tester

Follow the instructions to setup your AWS account.

Extract IDT for FreeRTOS to a location on the file system

  • The devicetester-extract-location/bin directory holds the IDT binary, which is the entry point used to run IDT
  • The devicetester-extract-location/results directory holds logs that are generated every time you run IDT.
  • The devicetester-extract-location/configs directory holds configuration files that are required to setup IDT

Before running IDT, the files in devicetester-extract-location/configs need to be updated. We have pre-defined configures available in the idt_config. Copy these templates to devicetester-extract-location/configs, and the rest of this section will walk through the remaining values that need to be filled in.

You need to configure your AWS credentials for IDT.

  • In config.json, update the profile and awsRegion fields

You need to specify the device details for IDT.

  • In device.json, update serialPort to the serial port of your board as from PORT. Update publicKeyAsciiHexFilePath to the absolute path to dummyPublicKeyAsciiHex.txt. Update publicDeviceCertificateArn to the ARN of the certificate uploaded when Setup AWS IoT Core.

You need to configure IDT the build, flash and test settings.

  • In build.bat / build.sh, update ESP_IDF_PATH, and ESP_IDF_FRAMEWORK_PATH
  • In flash.bat / flash.sh, update ESP_IDF_PATH, ESP_IDF_FRAMEWORK_PATH, and NUM_COMPORT
  • In userdata.json, update sourcePath to the absolute path to the root of this repository.
  • In userdata.json, update signerCertificate with the ARN of the Setup pre-requisites for OTA cloud resources
  • Run all the steps to create a second code signing certificate but do NOT provision the key onto your board.
  • Copy the ARN for this certificate in userdata.json for the field untrustedSignerCertificate.

7.4 Running the FreeRTOS qualification 2.0 suite

With configuration complete, IDT can be run for an individual test group, a test case, or the entire qualification suite.

List all the available test groups, run:

.\devicetester_win_x86-64.exe list-groups

Run one or more specified test group, run e.g.:

.\devicetester_win_x86-64.exe run-suite --group-id FullCloudIoT --group-id OTACore

Run one or more specified tests, run e.g.:

.\devicetester_win_x86-64.exe run-suite --group-id OTADataplaneMQTT --test-id OTAE2EGreaterVersion

To run the entire qualification suite, run:

.\devicetester_win_x86-64.exe run-suite --skip-group-id FullPKCS11_PreProvisioned_RSA --skip-group-id FullPKCS11_Import_RSA --skip-group-id FullPKCS11_Core --skip-group-id FullTransportInterfacePlainText

For more information, .\devicetester_win_x86-64.exe help will show all available commands.

When IDT is run, it generates the results/uuid directory that contains the logs and other information associated with your test run. See Understanding results and logs for more details.