Raspberry Pi Pico W5x00 Azure IoT SDK Examples

RP2040 - W5100S or W5500 network examples - Azure IoT Cloud functions, Azure IoT SDK, Azure IoT device client, ...

1. 🎯 Azure IoT SDK examples
- 1.1. 3rd party SDKs & libraries
2. 🎓 Getting started

1. 🎯 Azure IoT SDK examples

Application	Description
examples	Basic Azure IoT Cloud functions with Azure IoT SDK. (NonOS + WIZnet W5100S or W5500)

1.1. 3rd party SDKs & libraries

3rd party SDKs & libraries are in the RP2040-HAT-AZURE-C\libraries directory of 'RP2040-HAT-AZURE-C', the example for connecting Azure IoT Cloud.

SDKs & libraries	Description
ioLibrary_Driver	A library that can control WIZnet's W5x00 series Ethernet chip.
mbedtls	It supports security algorithms and SSL and TLS connection.
azure-iot-sdk-c	A collection of C source files consisting of Embedded C (C-SDK) that can be used by embedded applications to securely connect IoT devices to Azure IoT Cloud.
pico-sdk	It makes a development environment for building software applications for the Pico(RP2040) platform.
pico-extras	pico-extras has additional libraries that are not yet ready for inclusion the Pico SDK proper, or are just useful but don't necessarily belong in the Pico SDK.

Each SDKs & libraries consists of submodule.

2. 🎓 Getting started

Please refer to Getting Started with the Raspberry Pi Pico and the README in the pico-sdk for information on getting up and running.

2.1. 🗂 Set up example

2.1.1. Make 'port' directory for azure-iot-sdk-c, ioLibrary_Driver, mbedtls and timer

For Pico(RP2040) - W5100S or W5500 platform, we need to port code, please check porting guide below.

How to Port the Azure IoT C SDK to Other Platforms

Result of above porting can be found in RP2040-HAT-AZURE-C\port\azure-iot-sdk-c directory.

2.1.2. Modify 'CMakeLists.txt'

First, set the ethernet chip according to the evaluation board used in the following RP2040-HAT-AZURE-C/CMakeLists.txt file.

Evaluation board	Ethernet chip
WIZnet Ethernet HAT	W5100S
W5100S-EVB-Pico	W5100S
W5500-EVB-Pico	W5500

For example, when using WIZnet Ethernet HAT or W5100S-EVB-Pico:

# Set ethernet chip
set(WIZNET_CHIP W5100S)

When using W5500-EVB-Pico:

# Set ethernet chip
set(WIZNET_CHIP W5500)

And find the line similar to this and replace it as your environment:

# Set the project root directory if it's not already defined, as may happen if
# the tests folder is included directly by a parent project, without including
# the top level CMakeLists.txt.
if(NOT DEFINED AZURE_SDK_DIR)
    set(AZURE_SDK_DIR ${CMAKE_SOURCE_DIR}/libraries/azure-iot-sdk-c)
    message(STATUS "AZURE_SDK_DIR = ${AZURE_SDK_DIR}")
endif()

if(NOT DEFINED WIZNET_DIR)
    set(WIZNET_DIR ${CMAKE_SOURCE_DIR}/libraries/ioLibrary_Driver)
    message(STATUS "WIZNET_DIR = ${WIZNET_DIR}")
endif()

if(NOT DEFINED MBEDTLS_LIB_DIR)
    set(MBEDTLS_LIB_DIR ${CMAKE_SOURCE_DIR}/libraries/mbedtls)
    message(STATUS "MBEDTLS_LIB_DIR = ${MBEDTLS_LIB_DIR}")
endif()

if(NOT DEFINED PORT_DIR)
    set(PORT_DIR ${CMAKE_SOURCE_DIR}/port)
    message(STATUS "PORT_DIR = ${PORT_DIR}")
endif()

2.1.3. Set your board network information and select sample application

In the following RP2040-HAT-AZURE-C/examples/main.c source file, find the line similar to this and replace it as you want:

(...)

// The application you wish to use should be uncommented
//
#define APP_TELEMETRY
//#define APP_C2D
//#define APP_CLI_X509
//#define APP_PROV_X509

// The application you wish to use DHCP mode should be uncommented
#define _DHCP
static wiz_NetInfo g_net_info =
    {
        .mac = {0x00, 0x08, 0xDC, 0x12, 0x34, 0x56}, // MAC address
        .ip = {192, 168, 11, 2},                     // IP address
        .sn = {255, 255, 255, 0},                    // Subnet Mask
        .gw = {192, 168, 11, 1},                     // Gateway
        .dns = {8, 8, 8, 8},                         // DNS server
#ifdef _DHCP
        .dhcp = NETINFO_DHCP // DHCP enable/disable
#else
        // this example uses static IP
        .dhcp = NETINFO_STATIC
#endif
};

2.1.4. Set the key information

Copy & Paste proper connection string and key value from the Azure Portal to RP2040-HAT-AZURE-C/examples/sample_certs.c:

/* Paste in the your iothub connection string  */
const char pico_az_connectionString[] = "[device connection string]";

const char pico_az_x509connectionString[] = "[device connection string]";

const char pico_az_x509certificate[] =
"-----BEGIN CERTIFICATE-----""\n"
"-----END CERTIFICATE-----";

const char pico_az_x509privatekey[] =
"-----BEGIN PRIVATE KEY-----""\n"
"-----END PRIVATE KEY-----";

const char pico_az_id_scope[] = "[ID Scope]";

const char pico_az_COMMON_NAME[] = "[custom-hsm-device]";

const char pico_az_CERTIFICATE[] =
"-----BEGIN CERTIFICATE-----""\n"
"-----END CERTIFICATE-----";

const char pico_az_PRIVATE_KEY[] =
"-----BEGIN PRIVATE KEY-----""\n"
"-----END PRIVATE KEY-----";

2.2. ⏳ Build example

2.2.1. Run command

Run the following CMake commands from the root of the repository:

mkdir build
cd build

# As your environment, select
cmake .. -G "MSYS Makefiles" ## on MSYS2 (MinGW64) + Windows 10 Platform
# or
cmake .. -G "Visual Studio 15 2017" ## For Visual Studio 2017
# or
cmake .. -G "Visual Studio 16 2019" -A Win32
# or
cmake ..

cd examples
make

Then, copy generated "main.uf2" file into your RP-Pico board. Done!

2.2.2. Example command log

on MSYS2 (MinGW64) + Windows 10 Platform

(PWD) RP2040-HAT-AZURE-C/build
$ cd ..

(PWD) RP2040-HAT-AZURE-C
$ rm -rf build

(PWD) RP2040-HAT-AZURE-C
$ mkdir build

(PWD) RP2040-HAT-AZURE-C
$ cd build

(PWD) RP2040-HAT-AZURE-C/build
$ cmake .. -G "MSYS Makefiles"
-- PICO_SDK_PATH = D:/RP2040/RP2040-HAT-AZURE-C/libraries/pico-sdk
-- Found Git: C:/msys64/usr/bin/git.exe (found version "2.34.1")
RP2040-HAT-AZURE-C patch utils found
Submodule 'libraries/azure-iot-sdk-c' (https://github.com/Azure/azure-iot-sdk-c.git) registered for path 'libraries/azure-iot-sdk-c'
Submodule 'libraries/ioLibrary_Driver' (https://github.com/Wiznet/ioLibrary_Driver.git) registered for path 'libraries/ioLibrary_Driver'
Submodule 'libraries/mbedtls' (https://github.com/ARMmbed/mbedtls.git) registered for path 'libraries/mbedtls'
Submodule 'libraries/pico-extras' (https://github.com/raspberrypi/pico-extras.git) registered for path 'libraries/pico-extras'
Submodule 'libraries/pico-sdk' (https://github.com/raspberrypi/pico-sdk.git) registered for path 'libraries/pico-sdk'
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/ioLibrary_Driver'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/mbedtls'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/pico-extras'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/pico-sdk'...
Submodule path 'libraries/azure-iot-sdk-c': checked out '808a5595f98853a5f2eae2c67dd9b3608a2338ea'
Submodule path 'libraries/ioLibrary_Driver': checked out 'e285249784ce6c09b869502bb6715337b45278e3'
Submodule path 'libraries/mbedtls': checked out '8df2f8e7b9c7bb9390ac74bb7bace27edca81a2b'
Submodule path 'libraries/pico-extras': checked out '77eae2836638baf2f61b321eb61125da99bb4445'
Submodule path 'libraries/pico-sdk': checked out '2062372d203b372849d573f252cf7c6dc2800c0a'
Submodule 'azure-c-shared-utility' (https://github.com/Azure/azure-c-shared-utility.git) registered for path 'c-utility'
Submodule 'deps/azure-c-testrunnerswitcher' (https://github.com/Azure/azure-c-testrunnerswitcher.git) registered for path 'deps/azure-c-testrunnerswitcher'
Submodule 'deps/azure-ctest' (https://github.com/Azure/azure-ctest.git) registered for path 'deps/azure-ctest'
Submodule 'deps/azure-macro-utils-c' (https://github.com/Azure/azure-macro-utils-c.git) registered for path 'deps/azure-macro-utils-c'
Submodule 'deps/parson' (https://github.com/kgabis/parson.git) registered for path 'deps/parson'
Submodule 'deps/uhttp' (https://github.com/Azure/azure-uhttp-c.git) registered for path 'deps/uhttp'
Submodule 'deps/umock-c' (https://github.com/Azure/umock-c.git) registered for path 'deps/umock-c'
Submodule 'provisioning_client/deps/RIoT' (https://github.com/Microsoft/RIoT.git) registered for path 'provisioning_client/deps/RIoT'
Submodule 'provisioning_client/deps/utpm' (https://github.com/Azure/azure-utpm-c.git) registered for path 'provisioning_client/deps/utpm'
Submodule 'azure-uamqp-c' (https://github.com/Azure/azure-uamqp-c.git) registered for path 'uamqp'
Submodule 'azure-umqtt-c' (https://github.com/Azure/azure-umqtt-c.git) registered for path 'umqtt'
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/c-utility'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/deps/azure-c-testrunnerswitcher'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/deps/azure-ctest'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/deps/azure-macro-utils-c'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/deps/parson'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/deps/uhttp'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/deps/umock-c'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/provisioning_client/deps/RIoT'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/provisioning_client/deps/utpm'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/uamqp'...
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c/umqtt'...
Submodule path 'c-utility': checked out '73a2039cc0de5ececf5755ebe731a6b5b98f85da'
Submodule path 'deps/azure-c-testrunnerswitcher': checked out '8734bd6c53c88dd6c0cea8e87d70b9964726484a'
Submodule path 'deps/azure-ctest': checked out '4aa84c45236ecda21983fb682f542f17d0b21e19'
Submodule path 'deps/azure-macro-utils-c': checked out '5926caf4e42e98e730e6d03395788205649a3ada'
Submodule path 'deps/parson': checked out '8beeb5ea4da5eedff8d3221307ef04855804a920'
Submodule path 'deps/uhttp': checked out 'db8ac9c1353fe05cf6917e8ec8bcb866bf4a6f11'
Submodule path 'deps/umock-c': checked out '504193e65d1c2f6eb50c15357167600a296df7ff'
Submodule path 'provisioning_client/deps/RIoT': checked out 'e878185a8fb433902bee185b6f3a8c66aa232bff'
Submodule path 'provisioning_client/deps/utpm': checked out '1d0642281086669c6239f9bc1b085463044d69d6'
Submodule path 'uamqp': checked out 'b75cdb7e1736a388fe3e9fc2a99493aa1db6f43f'
Submodule path 'umqtt': checked out '12cb55ee5a926a124f22ad737c7cec35f6af7165'
Submodule 'tinyusb' (https://github.com/hathach/tinyusb.git) registered for path 'lib/tinyusb'
Cloning into '/d/RP2040/RP2040-HAT-AZURE-C/libraries/pico-sdk/lib/tinyusb'...
Submodule path 'lib/tinyusb': checked out '4bfab30c02279a0530e1a56f4a7c539f2d35a293'
submodules ioLibrary_Driver initialised
Running patch D:/RP2040/RP2040-HAT-AZURE-C/patches/01_iolibrary_driver_ethernet_chip.patch
Running patch D:/RP2040/RP2040-HAT-AZURE-C/patches/02_iolibrary_driver_sntp.patch
PICO_SDK_PATH is D:/RP2040/RP2040-HAT-AZURE-C/libraries/pico-sdk
Defaulting PICO_PLATFORM to rp2040 since not specified.
Defaulting PICO platform compiler to pico_arm_gcc since not specified.
-- Defaulting build type to 'Release' since not specified.
PICO compiler is pico_arm_gcc
-- RP2040-HAT-AZURE-C SDK version is 1.0.0
-- The C compiler identification is GNU 10.1.0
-- The CXX compiler identification is GNU 10.1.0
-- The ASM compiler identification is GNU
-- Found assembler: C:/msys64/mingw64/bin/arm-none-eabi-gcc.exe
Defaulting PICO target board to pico since not specified.
Using board configuration from D:/RP2040/RP2040-HAT-AZURE-C/libraries/pico-sdk/src/boards/include/boards/pico.h
-- Found Python3: C:/Program Files/Python39/python.exe (found version "3.9.6") found components: Interpreter
TinyUSB available at D:/RP2040/RP2040-HAT-AZURE-C/libraries/pico-sdk/lib/tinyusb/src/portable/raspberrypi/rp2040; enabling build support for USB.
-- AZURE_SDK_DIR = D:/RP2040/RP2040-HAT-AZURE-C/libraries/azure-iot-sdk-c
-- WIZNET_DIR = D:/RP2040/RP2040-HAT-AZURE-C/libraries/ioLibrary_Driver
-- MBEDTLS_LIB_DIR = D:/RP2040/RP2040-HAT-AZURE-C/libraries/mbedtls
-- PORT_DIR = D:/RP2040/RP2040-HAT-AZURE-C/port
-- Performing Test C_COMPILER_SUPPORTS_WFORMAT_SIGNEDNESS
-- Performing Test C_COMPILER_SUPPORTS_WFORMAT_SIGNEDNESS - Failed
-- Configuring done
-- Generating done
-- Build files have been written to: D:/RP2040/RP2040-HAT-AZURE-C/build

(PWD) RP2040-HAT-AZURE-C/build
$ cd examples/

(PWD) RP2040-HAT-AZURE-C/build/examples
$ make
[  0%] Building C object libraries/CMakeFiles/AZURE_SDK_FILES.dir/azure-iot-sdk-c/c-utility/adapters/socketio_mbed.c.obj
[  0%] Building C object libraries/CMakeFiles/AZURE_SDK_FILES.dir/azure-iot-sdk-c/c-utility/adapters/httpapi_compact.c.obj
[  0%] Building C object libraries/CMakeFiles/AZURE_SDK_FILES.dir/azure-iot-sdk-c/certs/certs.c.obj
[  0%] Building C object libraries/CMakeFiles/AZURE_SDK_FILES.dir/azure-iot-sdk-c/c-utility/pal/tlsio_options.c.obj
[  0%] Building C object libraries/CMakeFiles/AZURE_SDK_FILES.dir/azure-iot-sdk-c/c-utility/src/xlogging.c.obj
[  0%] Building C object libraries/CMakeFiles/AZURE_SDK_FILES.dir/azure-iot-sdk-c/c-utility/src/singlylinkedlist.c.obj
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(...)

[ 97%] Building C object examples/CMakeFiles/main.dir/__/libraries/azure-iot-sdk-c/serializer/src/schema.c.obj
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(PWD) RP2040-HAT-AZURE-C/build/examples
$ cp main.uf2 /f/

2.3. 📝 Sample application results

Name		Name	Last commit message	Last commit date
Latest commit History 23 Commits
examples		examples
libraries		libraries
patches		patches
port		port
.gitignore		.gitignore
.gitmodules		.gitmodules
CMakeLists.txt		CMakeLists.txt
LICENSE		LICENSE
README.md		README.md
_1_APP_TELEMETRY_manual.md		_1_APP_TELEMETRY_manual.md
_2_APP_C2D_manual.md		_2_APP_C2D_manual.md
_3_APP_CLIENT_X509_manual.md		_3_APP_CLIENT_X509_manual.md
_4_APP_PROV_X509_manual.md		_4_APP_PROV_X509_manual.md
_ex_cmake_build_cmd.txt		_ex_cmake_build_cmd.txt
_ex_device_x509_cert_cmd.txt		_ex_device_x509_cert_cmd.txt
pico_sdk_import.cmake		pico_sdk_import.cmake
rp2040_hat_azure_c-patch.cmake		rp2040_hat_azure_c-patch.cmake
rp2040_hat_azure_c_sdk_version.cmake		rp2040_hat_azure_c_sdk_version.cmake

License

Wiznet/RP2040-HAT-AZURE-C

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Raspberry Pi Pico W5x00 Azure IoT SDK Examples

1. 🎯 Azure IoT SDK examples

1.1. 3rd party SDKs & libraries

2. 🎓 Getting started

2.1. 🗂 Set up example

2.1.1. Make 'port' directory for azure-iot-sdk-c, ioLibrary_Driver, mbedtls and timer

2.1.2. Modify 'CMakeLists.txt'

2.1.3. Set your board network information and select sample application

2.1.4. Set the key information

2.2. ⏳ Build example

2.2.1. Run command

2.2.2. Example command log

2.3. 📝 Sample application results

2.3.1. 📬 'iothub_ll_telemetry_sample' application result

2.3.2. 📩 'iothub_ll_c2d_sample' application result

2.3.3. 🔐 'iothub_ll_client_x509_sample' application result

2.3.4. 🚢 'prov_dev_client_ll_sample' application result

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