import ref from 'ref-napi';
import refArray from 'ref-array-di';
import refStruct from 'ref-struct-di';
import { LibraryInstance } from '../native';
export declare const SPI: {
    SPI_Init: ["int", ["int", "int", ref.Type<ref.Pointer<refStruct.StructObject<{
        mode: number;
        master: number;
        cpol: number;
        cpha: number;
        lsbFirst: number;
        selPolarity: number;
        clockSpeedHz: number;
    }>>>]];
    SPI_WriteBytes: ["int", ["int", "int", refArray.ArrayType<number>, "int"]];
    SPI_WriteBytesAsync: ["int", ["int", "int", refArray.ArrayType<number>, "int"]];
    SPI_ReadBytes: ["int", ["int", "int", refArray.ArrayType<number>, "int"]];
    SPI_WriteReadBytes: ["int", ["int", "int", refArray.ArrayType<number>, "int", refArray.ArrayType<number>, "int", "int"]];
};
export declare function getSPI(lib: LibraryInstance<typeof SPI>, handle: number): {
    init(index: number, config: SPIConfig): Promise<void>;
    writeBytes(index: number, writeData: Buffer): Promise<void>;
    writeBytesAsync(index: number, writeData: Buffer): Promise<void>;
    readBytes(index: number, readLen: number): Promise<Buffer>;
    writeReadBytes(index: number, writeData: Buffer, readLen: number, intervalTimeUs: number): Promise<Buffer>;
};
export declare enum SPIIndex {
    SPI1 = 0,
    SPI1_CS0 = 0,
    SPI1_CS1 = 16,
    SPI1_CS2 = 32,
    SPI1_CS3 = 48,
    SPI1_CS4 = 64,
    SPI2 = 1,
    SPI2_CS0 = 1,
    SPI2_CS1 = 17,
    SPI2_CS2 = 33,
    SPI2_CS3 = 49,
    SPI2_CS4 = 65
}
export interface SPIConfig {
    mode: SPIMode;
    master: SPIMaster;
    cpol: number;
    cpha: number;
    lsbFirst: SPILsbFirst;
    selPolarity: SPISelPolarity;
    clockSpeedHz: number;
}
export declare enum SPIMode {
    SPI_MODE_HARD_FDX = 0,
    SPI_MODE_HARD_HDX = 1,
    SPI_MODE_SOFT_HDX = 2,
    SPI_MODE_SOFT_ONE_WIRE = 3,
    SPI_MODE_SOFT_FDX = 4
}
export declare enum SPIMaster {
    SPI_SLAVE = 0,
    SPI_MASTER = 1
}
export declare enum SPILsbFirst {
    SPI_MSB = 0,
    SPI_LSB = 1
}
export declare enum SPISelPolarity {
    SPI_SEL_LOW = 0,
    SPI_SEL_HIGH = 1
}