OCPP-RS

OCPP-RS is a Rust library for implementing the Open Charge Point Protocol (OCPP) in Rust.

it currently supports OCPP 1.6.

Documentation

• Full implementation of OCPP 1.6 Protocol

• Currently most feature complete implementation of OCPP 1.6 in rust

• Batteries included, serialization and deserialization is provided here

• No_std, should work fine on embedded devices that allow heap allocation with a global allocator

• Inspired by a python ocpp library

Usage

In Cargo.toml, add the following dependency:

[dependencies]
ocpp-rs = "^0.2"

Particularities

Since the original OCPP 1.6 protocol does not contain a type field for CallResult, when parsing CallResultlt, you need to handle Special cases where JSON payloads are ambiguous, like empty objects like: {}, these might get serialized as a EmptyResponse instead of the variant you are waiting for like GetConfiguration.

Look at this file to see how to properly handle CallResults: example

Example

Receiving a payload from a client:

use ocpp_rs::v16::parse::{self, Message};
use ocpp_rs::v16::call::{Action, Call};

// Example incoming message
let incoming_text = "[2, \"19223201\", \"BootNotification\", { \"chargePointVendor\": \"VendorX\", \"chargePointModel\": \"SingleSocketCharger\" }]";
let incoming_message = parse::deserialize_to_message(incoming_text);
if let Ok(Message::Call(call)) = incoming_message {
    match call.payload {
        Action::BootNotification(_boot_notification) => {
            // Do something with boot_notification
        }
        _ => {
            // Handle other actions
        }
    }
}

Sending a payload to a client:

let response = Message::CallResult(CallResult::new(
    "1234".to_string(),
    ResultPayload::StartTransaction(call_result::StartTransaction {
        transaction_id: 0,
        id_tag_info: IdTagInfo {
            status: ocpp_rs::v16::enums::ParsedGenericStatus::Accepted,
            expiry_date: None,
            parent_id_tag: None,
        },
    }),
));

let json = parse::serialize_message(&response)?;
println!("Sending to client: {}", json);

Contributing

Contributions are welcome! Common steps to contribute:

• Fork the repository and create a new branch.
• Make your changes or improvements.
• Open a pull request with a clear description.
• When adding/changing code, add/modify tests for what you have worked on.

Help is wanted to add more tests and fuzzing tests (e.g., using OSS-Fuzz), so feel free to jump in!

Roadmap

• OCPP 2.1 implementation is planned, no ETA, help needed.