Price Data Feeds

Get price info on chain with Chainlink Price Feeds for multiple coin pairs

Data Feeds are the quickest way to connect your smart contracts to the real-world data such as asset prices, reserve balances, NFT floor prices, and L2 sequencer health.

Chainlink Data Feeds | Chainlink DocumentationChainlink Documentation

Types of data feeds

Data feeds provide many different types of data for your applications.

• Price Feeds

• Proof of Reserve Feeds

• NFT Floor Price Feeds

• L2 sequencer uptime feeds

Using Data Feeds

• Start by importing the datum-contracts interface

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.14;

import "datum-contracts/interfaces/PriceOracleInterface.sol";

• Now create an instance of the oracle-interface , and the Oracle Address should be the Price Oracle address for the chain , you are trying out

  // For Sepolia 
  oracleAddress = 0x9eDf5612D5108dD5BcCb2da086a2C52ef58b03a0
  
  PriceOracleV1 _priceOracle =
        PriceOracleV1(oracleAddress);

PricePairAddress : for other pairAddreses , visit here for PriceFeeds , ProofOfReserve feed and NFTFloorPrice on Goerli testnet.

• You can call requestPairPrice to an updated price for the pair

_priceOracle.requestPairPrice(
            pairAddress
        );

• Call getLatestPrice to get the price for the Pair directly

price = _priceOracle.getLatestPrice(
                pairAddress
            );

Full Example Contract Code

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.14;

// *************************************
// *   Minimum Viable Price Oracle  *
// *************************************

// This contract shows how to get up and running as quickly as posible with Chainlink's Price Feeds
// We make a simple price request to the Oracle and getLatestPrice

import "datum-contracts/interfaces/PriceOracleInterface.sol";

contract PriceOracleTest {
    PriceOracleV1 _priceOracle =
        PriceOracleV1(0x9eDf5612D5108dD5BcCb2da086a2C52ef58b03a0);

    // Submit a data request to the oracle
    /**
    Price Feedsfor goerli Address
    Pair: BTC/ETH
    PairAddress: 0x779877A7B0D9E8603169DdbD7836e478b4624789
     */
    function requestPrice() public {
        _priceOracle.requestPairPrice(
            0x779877A7B0D9E8603169DdbD7836e478b4624789
        );
    }

    // Fetch the resolved price from the Optimistic Oracle that was settled.
    function getPrice() public view returns (uint) {
        return
            _priceOracle.getLatestPrice(
                0x779877A7B0D9E8603169DdbD7836e478b4624789
            );
    }
}

In there simple steps , you can get Price Feeds , ProofOfReserve feeds and NFTFloorPrices from the Chainlink Oracle to your chain with DATUM