findAssociatedTokenAccount

Finds the Associated Token Account (ATA) address for a given wallet (owner) and a given SPL Token mint. The ATA is the standard, deterministic address where a user holds tokens of a specific type. This function calculates the address locally without needing an on-chain query.

The ATA is required when you want to send or receive SPL tokens from a user.

Parameters

Parameter	Type	Description
ownerPubkeyBase58	const String&	The Base58 address of the wallet that owns the token account.
mintPubkeyBase58	const String&	The Base58 address of the SPL Token's mint.
outATA	String&	An output parameter that will be populated with the Base58 address of the calculated ATA.

Return Value

• bool: Returns true if the ATA was calculated successfully, false otherwise.

Example Code (main.cpp)

#include <Arduino.h>
#include "Infratic-lib.h"

// --- Settings ---
const String SOLANA_RPC_URL = "[https://api.devnet.solana.com](https://api.devnet.solana.com)";

// Your wallet address or a test wallet
const String OWNER_PUBLIC_KEY_BASE58 = "YOUR_PUBLIC_KEY_BASE58";
// Example: Devnet USDC mint address
const String TOKEN_MINT_BASE58 = "Gh9ZwEmdLJ8DscKNTkTqPbNwLNNBjuSzaG9Vp2KGtKJr";

Infratic solana(SOLANA_RPC_URL);

void setup() {
    Serial.begin(115200);
    delay(1000);

    Serial.println("\n=== Find Associated Token Account Example ===");

    String ataAddress;
    if (solana.findAssociatedTokenAccount(OWNER_PUBLIC_KEY_BASE58, TOKEN_MINT_BASE58, ataAddress)) {
        Serial.println("✅ ATA found successfully!");
        Serial.println("   -> Owner: " + OWNER_PUBLIC_KEY_BASE58);
        Serial.println("   -> Token Mint: " + TOKEN_MINT_BASE58);
        Serial.println("   -> ATA Address: " + ataAddress);
    } else {
        Serial.println("❌ Failed to find ATA. Check input addresses.");
    }
}

void loop() {
    // Can be left empty
}