import buffer from '@ohos.buffer';
import testNapi from '@ohos.hiserialsdk'

const TAG = '[TcpDemo.TcpClient]'
import prompt from '@ohos.prompt'
/**
 * devPath
 *j36--ttyS5
 * j37--ttyS7
 * j38--ttyS9
 */

export default class SerialPortClient {
  private devPath: string = ''
  private len: any = ''
  private fd: number = -1
  private speed: number = 115200 //波特率
  private databits: number = 8 //数据位
  private flow_ctrl:number=0 //流控制
  private stopbits:number=1 //停止位
  private parity:number=0x4e //停止位

  constructor(devPath?:string) {
    this.devPath = devPath || '/dev/ttyS5'

  }

  openSerial() {
    this.fd = testNapi.SerialOpen(this.devPath);
  }

  SerialSet(param?) {
    this.speed = param?.speed || 115200
    this.flow_ctrl=param?.flow_ctrl||0
    this.databits = param?.databits||8
    this.stopbits=param?.stopbits||1
    this.parity=param?.parity || 0x4e
    testNapi.SerialSet(this.fd, this.speed , this.flow_ctrl, this.databits, this.stopbits,this.parity);
  }

  SerialSend(data?) {
    const sendArr = data || [0x61, 0xAA, 0x0A, 0X15, 0X00] //档位查询
    testNapi.SerialSend(this.fd, sendArr);
  }

  SerialRecv(timeout?: number) {
    let revTestInfo = testNapi.SerialRecv(this.fd, timeout);

    //let revTestInfo = testNapi.SerialRecv(this.fd, timeout, 6);
    const message = revTestInfo?.recevedBuf?.toString()
    console.log('revTestInfo.recevedBuf.toString()',revTestInfo.recevedBuf)
    console.log('revTestInfo.recevedBuf.toString()',revTestInfo.recevedBuf.toString())
    this.len = revTestInfo.recevedLen
    return {
      msg: message, recevedLen: this.len
    }
  }

  SerialClose(callback) {
    testNapi.SerialClose(this.fd);
  }
}