import type { BaudRate, DataBits, Parity, StopBits, Transport } from '@ya-modbus/driver-types';
import type { RetryLogger } from './retry.js';
/**
 * RTU transport configuration
 */
export interface RTUConfig {
    /** Serial port path (e.g., /dev/ttyUSB0, COM1) */
    port: string;
    /** Baud rate */
    baudRate: BaudRate;
    /** Data bits */
    dataBits: DataBits;
    /** Parity */
    parity: Parity;
    /** Stop bits */
    stopBits: StopBits;
    /** Modbus slave ID (1-247) */
    slaveId: number;
    /** Response timeout in milliseconds (default: 1000) */
    timeout?: number | undefined;
    /** Maximum retry attempts (default: 3, use 1 to disable retries) */
    maxRetries?: number | undefined;
    /** Optional callback to log retry attempts for debugging */
    logger?: RetryLogger | undefined;
}
/**
 * Create an RTU transport
 *
 * @param config - RTU configuration
 * @returns Transport implementation for RTU
 */
export declare function createRTUTransport(config: RTUConfig): Promise<Transport>;
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