Crate esp_solana 

no_std Solana SDK for ESP32 microcontrollers.

Wallet creation (BIP39/SLIP-10), Ed25519 signing, transaction building, and JSON-RPC — all in ~163KB of flash on ESP32-C3.

Quick start

[dependencies]
esp-solana = { version = "0.1", features = ["wallet"] }

use esp_solana::prelude::*;
use esp_solana::wallet::Wallet;
use esp_solana::instruction::system_transfer;
use esp_solana::message::Message;
use esp_solana::transaction::Transaction;

let wallet = Wallet::generate_12(&entropy).unwrap();
let keypair = wallet.keypair(0).unwrap();

let ix = system_transfer(keypair.pubkey(), recipient, 1_000_000);
let msg = Message::compile(keypair.pubkey(), &[ix], blockhash).unwrap();
let tx = Transaction::new(msg, &[&keypair]).unwrap();
let b64 = tx.to_base64();

Features

• crypto (default) — Ed25519 signing via ed25519-compact
• wallet — BIP39 mnemonic + SLIP-10 key derivation (enables crypto)
• std — enables std for host-side testing

Modules

b64

Minimal base64 encoder (standard alphabet, no padding omission).

bip39wallet

BIP39 mnemonic generation, validation, and seed derivation.

bs58

Minimal base58 encoder/decoder (Bitcoin alphabet, used by Solana).

cryptocrypto

Ed25519 keypair, signing, and verification via ed25519-compact.

instruction

Solana instruction types and System Program builders.

message

Solana message compilation and wire-format serialization.

prelude

Curated re-exports for common use. use esp_solana::prelude::*;

rpc

Transport-agnostic Solana JSON-RPC client.

slip10wallet

SLIP-10 Ed25519 hierarchical key derivation.

transaction

Solana transaction signing and serialization.

types

walletwallet

High-level Solana wallet management.