Smart Watering System on Internet Computer Blockchain

This project is a backend canister written in Rust for a Smart Watering System. It monitors soil moisture levels and controls a water pump to automatically water the plants as needed. The canister is deployed on the Internet Computer (IC) blockchain.

Prerequisites

• DFINITY SDK
• Rust
• Cargo
• Node.js and npm

Project Setup

1. Install DFINITY SDK

sh -ci "$(curl -fsSL https://sdk.dfinity.org/install.sh)"

2. Install Rust

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
rustup update stable
rustup target add wasm32-unknown-unknown

3. Clone the Project

git clone https://github.com/Jud-et/rust_1.git
cd rust_1

5. Update Cargo.toml

Edit Cargo.toml to include the necessary dependencies:

[package]
name = "smart_watering_system"
version = "0.1.0"
edition = "2018"

[dependencies]
ic-cdk = "0.14.0"
ic-cdk-macros = "0.14.0"
candid = "0.10.9"
serde = "1.0"
serde_derive = "1.0"
serde_json = "1.0"

[lib]
crate-type = ["cdylib"]

6. Implement the Canister Logic

Edit src/lib.rs.

7. Generate the Candid Interface

Build the project and generate the Candid interface file:

cargo build --target wasm32-unknown-unknown --release
cargo test -- --nocapture

This will run the test that generates the rust_1_backend.did file in your project directory.

8. Update dfx.json

Edit dfx.json to include the Candid interface file:

{
  "canisters": {
    "smart_watering_system": {
      "main": "src/smart_watering_system/src/lib.rs",
      "type": "rust",
      "candid": "src/smart_watering_system/smart_watering_system.did"
    }
  },
  "networks": {
    "local": {
      "bind": "127.0.0.1:8000",
      "type": "ephemeral"
    }
  },
  "version": 1
}

9. Deploy the Canister

Deploy your canister to the local Internet Computer instance:

dfx deploy

Interacting with the Canister

Update Moisture Level

dfx canister call rust_1_backend update_moisture_level '(30.5)'

Get Moisture Level

dfx canister call rust_1_backend get_moisture_level

Get Moisture Log

dfx canister call rust_1_backend get_moisture_log

Control Pump

dfx canister call rust_1_backend control_pump '(true)' # Turn on the pump
dfx canister call rust_1_backend control_pump '(false)' # Turn off the pump

Get Pump State

dfx canister call rust_1_backend get_pump_state