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samples: siwx917_ota: http/s OTAF application
This application demonstrates the support for OTA firmware upgrade. Signed-off-by: Devika Raju <[email protected]>
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‎samples/siwx91x_ota/CMakeLists.txt‎

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# Copyright (c) 2025 Silicon Laboratories Inc.
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# SPDX-License-Identifier: Apache-2.0
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cmake_minimum_required(VERSION 3.20.0)
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find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
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project(siwx91x_ota)
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target_sources(app PRIVATE src/main.c)
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# Ensure the directory for the generated file exists
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set(gen_dir ${ZEPHYR_BINARY_DIR}/include/generated/)
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file(MAKE_DIRECTORY ${gen_dir})

‎samples/siwx91x_ota/Kconfig‎

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# Config options for OTA application
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#
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# Copyright (c) 2025 Silicon Laboratories Inc.
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# SPDX-License-Identifier: Apache-2.0
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mainmenu "SiWx91x OTA Configuration"
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menu "SiWx91x OTA application options"
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config OTA_WIFI_SSID
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string "WiFi SSID"
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default "your_ssid"
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help
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WiFi SSID for the network to connect to.
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config OTA_WIFI_PSK
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string "WiFi PSK"
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default "your_psk"
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help
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WiFi PSK (password) for the network to connect to.
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config OTA_UPDATE_URL
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string "OTA update URL"
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default "http://example.com:8080/firmware.rps"
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help
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The full URL for the OTA firmware update.
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endmenu
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source "Kconfig.zephyr"

‎samples/siwx91x_ota/README.rst‎

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# Copyright (c) 2025 Silicon Laboratories Inc.
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# SPDX-License-Identifier: Apache-2.0
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.. zephyr:code-sample:: siwx91x_otas
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:name: HTTP OTA Firmware Update on SiWx917
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:relevant-api: wifi
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Demonstrates HTTP/HTTPS OTA firmware update using SiWx917 on Zephyr.
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Overview
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********
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Application demonstrates how to perform HTTP/HTTPS OTA firmware updates on the
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SiWx917 platform using Zephyr RTOS. It connects to a Wi-Fi network, establishes
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a secure HTTPS connection using a CA certificate, and downloads firmware
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updates from a remote server. The application showcases secure connectivity and
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OTA update mechanisms for IoT devices.
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Requirements
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************
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* SiWx917 development board with Wi-Fi support
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* HTTP server
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Configurations
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**************
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The following configurations can be modified in ``prj.conf``:
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* Wi-Fi Settings
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* ``CONFIG_OTA_WIFI_SSID`` - Network name
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* ``CONFIG_OTA_WIFI_PSK`` - Network password
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* ``CONFIG_OTA_UPDATE_URL`` - OTA update URL
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.. _signed image generation:
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https://docs.zephyrproject.org/latest/kconfig.html#CONFIG_SIWX91X_SIGN_KEY
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Building and Running
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********************
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1. Configure required settings
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2. Build and Flash
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.. code-block:: console
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west build -b siwx917_rb4338a siwx917_ota -p
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west flash
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3. Run HTTP/HTTPS server
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Test the Application
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********************
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1. After flashing the SiWx91x, the device will scan for the specified AP and
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attempt to connect if found.
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2. Once connected, the SiWx91x will initiate an HTTP/S connection to the specified
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server and download the firmware binary.
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3. The OTA update process will be logged to the serial console.
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Note
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****
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This application is not for production.

‎samples/siwx91x_ota/prj.conf‎

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# Copyright (c) 2025 Silicon Laboratories Inc.
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# SPDX-License-Identifier: Apache-2.0
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# Network Stack Configuration
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CONFIG_NETWORKING=y
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CONFIG_NET_MGMT=y
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CONFIG_NET_TCP=y
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CONFIG_NET_CONNECTION_MANAGER=y
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# IPv4/IPv6 Support
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CONFIG_NET_IPV4=y
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CONFIG_NET_IPV6=y
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CONFIG_NET_ARP=y
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CONFIG_NET_DHCPV4=y
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CONFIG_NET_DHCPV6=y
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# WiFi Configuration
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CONFIG_WIFI=y
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# Memory and Threading
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CONFIG_MAIN_STACK_SIZE=4098
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CONFIG_INIT_STACKS=y
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CONFIG_HEAP_MEM_POOL_SIZE=8192
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# CMSIS Configuration
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CONFIG_CMSIS_V2_MUTEX_MAX_COUNT=10
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CONFIG_CMSIS_V2_EVT_FLAGS_MAX_COUNT=10
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# Network Parameters
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CONFIG_NET_TCP_MAX_RECV_WINDOW_SIZE=10240
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# Socket Support
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CONFIG_REQUIRES_FULL_LIBC=y
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CONFIG_NET_SOCKETS=y
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# HTTP Client Configuration
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CONFIG_HTTP_CLIENT=y
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CONFIG_HTTP_PARSER_URL=y
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CONFIG_NET_MGMT_EVENT=y
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# TLS Security Configuration
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CONFIG_MBEDTLS=y
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CONFIG_MBEDTLS_BUILTIN=y
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CONFIG_MBEDTLS_ENABLE_HEAP=y
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CONFIG_MBEDTLS_HEAP_SIZE=60000
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CONFIG_TLS_CREDENTIALS=y
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CONFIG_NET_SOCKETS_SOCKOPT_TLS=y
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CONFIG_MBEDTLS_SSL_MAX_CONTENT_LEN=8000
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# TLS Protocol and Cipher Configuration
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CONFIG_MBEDTLS_TLS_VERSION_1_2=y
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CONFIG_MBEDTLS_SHA256=y
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CONFIG_MBEDTLS_CIPHER_AES_ENABLED=y
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CONFIG_MBEDTLS_CIPHER_ALL_ENABLED=y
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CONFIG_MBEDTLS_CIPHER_CHACHA20_ENABLED=y
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CONFIG_MBEDTLS_POLY1305=y
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CONFIG_ASSERT=y
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# DNS configuration
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CONFIG_DNS_RESOLVER=y
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# for SLAAC configuration
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CONFIG_NET_IPV6_ND=y
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CONFIG_NET_IPV6_RA_RDNSS=y
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CONFIG_NET_IPV6_NBR_CACHE=y
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CONFIG_NET_IPV6_MLD=y
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CONFIG_NET_IPV6_DAD=y
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# Wi-Fi configuration
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CONFIG_OTA_WIFI_SSID="<AP-SSID>"
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CONFIG_OTA_WIFI_PSK="<AP-PASSWORD>"
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# OTA Configuration
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CONFIG_SIWX91X_FIRMWARE_UPGRADE=y
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CONFIG_REBOOT=y

‎samples/siwx91x_ota/sample.yaml‎

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# Copyright (c) 2025 Silicon Laboratories Inc.
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# SPDX-License-Identifier: Apache-2.0
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sample:
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name: HTTP/HTTPS OTAF
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description: HTTP/HTTPS OTA firmware update application for SiWx917
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tests:
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sample.net.http_otaf:
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harness: net
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platform_allow:
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- siwx917_rb4338a
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tags:
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- net
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- wifi
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- http
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- tls
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- ota
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integration_platforms:
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- siwx917_rb4338a

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