Add USDC value feed contract

README.md

@@ -70,4 +70,8 @@ The ETH value should handle the decimal of the erc 20
 
 ```sol
 npx hardhat size-contracts
-```
+```
+
+Network: Ethereum Mainnet
+USDC/USD Price Feed Address: 0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6
+ETH/USD Price Feed Address: 0x5f4ec3df9cbd43714fe2740f5e3616155c5b8419

contracts/example/USDCV1EMPETHValueFeed.sol

@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.18;
+
+
+import { AggregatorV3Interface } from "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";
+
+import { IV1EMPETHValueFeed } from "../interface/IV1EMPETHValueFeed.sol";
+
+
+contract USDCV1EMPETHValueFeed is
+	IV1EMPETHValueFeed
+{
+	AggregatorV3Interface internal _usdcUsdPriceFeed;
+	AggregatorV3Interface internal _ethUsdPriceFeed;
+
+
+	constructor (address __usdcUsdPriceFeed, address __ethUsdPriceFeed)
+	{
+		_usdcUsdPriceFeed = AggregatorV3Interface(__usdcUsdPriceFeed);
+		_ethUsdPriceFeed = AggregatorV3Interface(__ethUsdPriceFeed);
+	}
+
+
+	/// @inheritdoc IV1EMPETHValueFeed
+	function utilizedERC20ETHValue()
+		public
+		view
+		override
+		returns (uint256)
+	{
+		// Get the latest USDC/USD price
+		(, int256 usdcUsdPrice, , , ) = _usdcUsdPriceFeed.latestRoundData();
+
+		// Get the latest ETH/USD price
+		(, int256 ethUsdPrice, , , ) = _ethUsdPriceFeed.latestRoundData();
+
+		uint8 usdcDecimals = _usdcUsdPriceFeed.decimals();
+		uint8 ethDecimals = _ethUsdPriceFeed.decimals();
+
+		// Ensure prices are positive
+		require(usdcUsdPrice > 0 && ethUsdPrice > 0, "Invalid price");
+
+		// Normalize to 18 decimals
+		uint256 normalizedUsdcUsdPrice = uint256(usdcUsdPrice) * 10 ** (18 - usdcDecimals);
+		uint256 normalizedEthUsdPrice = uint256(ethUsdPrice) * 10 ** (18 - ethDecimals);
+
+		// Calculate USDC price in ETH
+		return (normalizedUsdcUsdPrice * 1e18) / normalizedEthUsdPrice;
+	}
+
+	/// @inheritdoc IV1EMPETHValueFeed
+	function eRC20Decimals()
+		public
+		view
+		override
+		returns (uint8)
+	{
+		return _usdcUsdPriceFeed.decimals();
+	}
+}

cspell.json

@@ -4,6 +4,6 @@
     "dictionaryDefinitions": [],
     "dictionaries": [],
     "words": [],
-    "ignoreWords": ["EMPERC", "EMPETH", "existant", "IERC", "inheritdoc", "Interactor", "Reentrancy"],
+    "ignoreWords": ["chainlink", "EMPERC", "EMPETH", "existant", "IERC", "inheritdoc", "Interactor", "Reentrancy", "USDCV"],
     "import": []
 }