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samples: net: ocpp: Charge Point test sample
A test sample for ocpp charge point with 2 connectors, central system steve server is used with test setup (public available) Signed-off-by: Saravanan Sekar <[email protected]>
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‎samples/net/ocpp/CMakeLists.txt‎

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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 $ENV{ZEPHYR_BASE})
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project(ocpp)
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include(${ZEPHYR_BASE}/samples/net/common/common.cmake)
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target_sources(app PRIVATE src/main.c)

‎samples/net/ocpp/Kconfig‎

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# Config options for OCPP sample application
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# Copyright (c) 2025 Linumiz GmbH
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# SPDX-License-Identifier: Apache-2.0
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mainmenu "OCPP sample application"
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config NET_SAMPLE_OCPP_SERVER
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string "OCPP server ip"
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help
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OCPP central system server ip address
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config NET_SAMPLE_OCPP_PORT
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int "OCPP server port"
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help
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OCPP central system server port
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config NET_SAMPLE_SNTP_SERVER
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string "SNTP server ip"
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help
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SNTP server ip to get the time from network
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source "Kconfig.zephyr"

‎samples/net/ocpp/README.rst‎

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.. zephyr:code-sample:: ocpp
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:name: OCPP charge point
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:relevant-api: ocpp_api
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Implement an OCPP charge point that connects to a Central System server and
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simulates the meter readings.
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Overview
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********
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Open Charge Point Protocol (OCPP) is an application protocol for communication
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between Charge Points (Electric vehicle (EV) charging stations) and a central
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management system, also known as a charging station network.
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This ocpp sample application for Zephyr implements the OCPP library
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and establishes a connection to an Central System server using the web socket
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The source code for this sample application can be found at:
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:zephyr_file:`samples/net/ocpp`.
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Requirements
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************
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- Linux machine
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- STM32 Discovery kit (32F769IDISCOVERY) or any network interface device
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- SteVe Demo Server (<https://github.com/steve-community/steve/blob/master/README.md>)
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- LAN for testing purposes (Ethernet)
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Building and Running
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********************
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Build the ocpp sample application like this:
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.. zephyr-app-commands::
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:zephyr-app: samples/net/ocpp
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:board: <board to use>
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:goals: build
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:compact:
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The sample application is to built and tested on
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.. code-block:: console
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west build -b stm32f769i_disco
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west flash
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The output of sample is:
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.. code-block:: console
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*** Booting Zephyr OS build v3.6.0-rc1-37-g8c035d8f24cf ***
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OCPP sample stm32f769i_disco
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[00:00:02.642,000] <inf> net_dhcpv4: Received: 192.168.1.101
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[00:00:02.642,000] <inf> main: net mgr cb
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[00:00:02.642,000] <inf> main: Your address: 192.168.1.101
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[00:00:02.642,000] <inf> main: Lease time: 86400 seconds
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[00:00:02.642,000] <inf> main: Subnet: 255.255.255.0
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[00:00:02.643,000] <inf> main: Router: 192.168.1.1
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[00:00:07.011,000] <inf> main: cs server 122.165.245.213 8180
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[00:00:07.011,000] <inf> main: IPv4 Address 122.165.245.213
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[00:00:07.024,000] <inf> main: sntp succ since Epoch: 1707890823
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[00:00:07.024,000] <inf> ocpp: upstream init
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[00:00:07.025,000] <inf> ocpp: ocpp init success
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[00:00:17.066,000] <inf> main: ocpp auth 0> idcon 1 status 1
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[00:00:17.101,000] <inf> main: ocpp auth 0> idcon 2 status 1
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[00:00:17.197,000] <inf> main: ocpp start charging connector id 1
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[00:00:17.255,000] <inf> main: ocpp start charging connector id 2
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[00:01:07.064,000] <inf> main: ocpp stop charging connector id 1
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[00:01:08.063,000] <inf> main: ocpp stop charging connector id 2

‎samples/net/ocpp/prj.conf‎

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# HTTP & Websocket
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CONFIG_HTTP_CLIENT=y
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CONFIG_WEBSOCKET_CLIENT=y
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# Networking config
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CONFIG_NETWORKING=y
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CONFIG_NET_IPV4=y
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CONFIG_NET_IPV6=n
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CONFIG_NET_CONNECTION_MANAGER=y
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CONFIG_NET_CONFIG_SETTINGS=y
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CONFIG_NET_TCP=y
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CONFIG_NET_SOCKETS=y
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CONFIG_NET_SOCKETS_POLL_MAX=4
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CONFIG_NET_L2_ETHERNET=y
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CONFIG_ETH_DRIVER=y
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CONFIG_LOG=y
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CONFIG_NET_LOG=y
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# OCPP
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CONFIG_OCPP=y
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# Please set the server addresses when compiling the sample
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CONFIG_NET_SAMPLE_SNTP_SERVER=""
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CONFIG_NET_SAMPLE_OCPP_SERVER=""
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CONFIG_NET_SAMPLE_OCPP_PORT=8180
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CONFIG_MAIN_STACK_SIZE=4096
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CONFIG_HEAP_MEM_POOL_SIZE=15000
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CONFIG_JSON_LIBRARY=y
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CONFIG_PICOLIBC=y
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CONFIG_NET_ARP=y
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CONFIG_NET_UDP=y
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CONFIG_NET_DHCPV4=y
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CONFIG_NET_DHCPV4_OPTION_CALLBACKS=y
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CONFIG_TEST_RANDOM_GENERATOR=y
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CONFIG_NET_TX_STACK_SIZE=2048
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CONFIG_NET_RX_STACK_SIZE=2048
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CONFIG_NET_PKT_RX_COUNT=28
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CONFIG_NET_BUF_RX_COUNT=60
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CONFIG_NET_MGMT=y
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CONFIG_NET_MGMT_EVENT=y
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CONFIG_SNTP=y
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CONFIG_ZBUS=y
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CONFIG_ZBUS_RUNTIME_OBSERVERS=y
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CONFIG_POSIX_API=y
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CONFIG_POSIX_CLOCK_SELECTION=y

‎samples/net/ocpp/sample.yaml‎

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sample:
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description: OCPP sample application
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name: OCPP charge point
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tests:
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sample.net.ocpp:
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harness: net
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depends_on: netif
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tags:
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- net
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- ocpp

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