sendSol

This is a high-level, all-in-one function for transferring SOL from one wallet to another. It simplifies the process by automatically handling all the necessary background steps:

1. Fetching the latest blockhash.
2. Creating the transfer transaction.
3. Signing the transaction with the provided private key.
4. Sending the transaction to the network.
5. Waiting for the transaction to be confirmed.

Parameters

Parameter	Type	Description
privateKeyBase58	const String&	The Base58-encoded private key of the sender's wallet. Use a devnet/testnet key only.
fromPubkeyBase58	const String&	The Base58-encoded public key of the sender's wallet.
toPubkeyBase58	const String&	The Base58-encoded public key of the recipient's wallet.
lamports	uint64_t	The amount to send, in lamports. 1 SOL = 1,000,000,000 lamports.

Return Value

• bool: Returns true if the entire transfer process (sending and confirmation) was successful. Returns false if any step failed.

Example Code (main.cpp)

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

// --- WiFi Settings ---
const char* WIFI_SSID = "YOUR_WIFI_SSID";
const char* WIFI_PASSWORD = "YOUR_WIFI_PASSWORD";

// --- Solana Settings ---
const String SOLANA_RPC_URL = "[https://api.devnet.solana.com](https://api.devnet.solana.com)";
// WARNING: Use a temporary devnet wallet for testing. Do NOT expose your mainnet private key.
const String MY_PRIVATE_KEY_BASE58 = "YOUR_PRIVATE_KEY_BASE58"; 
const String MY_PUBLIC_KEY_BASE58 = "YOUR_PUBLIC_KEY_BASE58";
const String RECIPIENT_PUBKEY_BASE58 = "RECIPIENT_PUBKEY_BASE58"; // Address to send SOL to

Infratic solana(SOLANA_RPC_URL);

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

    // Connect to WiFi
    Serial.print("Connecting to WiFi...");
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println("\n✅ WiFi connected!");

    Serial.println("\n=== Send SOL Example ===");

    uint64_t lamportsToSend = 200000; // 0.0002 SOL
    Serial.print("Attempting to send ");
    Serial.print((unsigned long)lamportsToSend);
    Serial.print(" lamports to ");
    Serial.println(RECIPIENT_PUBKEY_BASE58);

    if (solana.sendSol(MY_PRIVATE_KEY_BASE58, MY_PUBLIC_KEY_BASE58, RECIPIENT_PUBKEY_BASE58, lamportsToSend)) {
        Serial.println("✅ SOL transfer was sent and confirmed successfully!");
    } else {
        Serial.println("❌ SOL transfer failed. Check your balance, keys, and the recipient address.");
    }
}

void loop() {
    // This example runs once in setup.
}