using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO.Ports;
using System.Threading;


namespace Tps_LQ_Transmitter.com
{
    /// <summary>
    /// 蚯蚓直流程控电源控制类
    /// [使用计算机串口COM4通信]
    /// </summary>
    class RainwormPower:MySerial
    {
        SerialPort serial = null;

        public enum State { ON, OFF };
        public RainwormPower()
        {
            serial = new SerialPort();
            serial.PortName = "COM4";     //使用计算机串口COM4通信
            serial.BaudRate = 9600;
            serial.DataBits = 8;
            serial.StopBits = StopBits.One;//停止位设置为com_stop的值
            serial.Parity = Parity.None;//获取奇偶校验选项的值
            serial.ReadTimeout = 1000;    //读取等待时间1000
            serial.RtsEnable = true;
            if (!serial.IsOpen)
            {
                serial.Open();
            }
        }
        public override void portClose()
        {
            serial.Close();
        }
        /// <summary>
        /// 电源控制与查询读写
        /// </summary>
        /// <param name="data">询问命令</param>
        /// <param name="delay">延时mS</param>
        /// <returns>返回数据byte[]</returns>
        public byte[] powerWriteRead(byte[] data,int delay=100)
        {
            if (data == null)
                return null;

            //先读空
            if (serial.BytesToRead > 0)
                serial.DiscardInBuffer();

            byte[] crc = crc16(data);
            byte[] newarray = new byte[data.Length + 2];
            Array.Copy(data, newarray, data.Length);
            newarray[data.Length] = crc[0];
            newarray[data.Length + 1] = crc[1];

            serial.Write(newarray, 0, newarray.Length);
            Thread.Sleep(delay);
            if (serial.BytesToRead > 0)
            {
                byte[] dat = new byte[serial.BytesToRead];
                serial.Read(dat, 0, dat.Length);
                return dat;
            }
            else
            {
                return null;
            }
        }
        /// <summary>
        /// 电源输出ON/OFF
        /// </summary>
        /// <param name="st">输出状态ON/OFF</param>
        public void powerOnoff(State st)
        {
            byte[] byOn = { 0x00, 0x10, 0x10, 0x04, 0x00, 0x01, 0x02, 0x00, 0x01 };
            byte[] byOFF = { 0x00, 0x10, 0x10, 0x04, 0x00, 0x01, 0x02, 0x00, 0x00 };
            if (st==State.ON)
            {
                powerWriteRead(byOn);
            }
            else
            {
                powerWriteRead(byOFF);
            }
        }

        /// <summary>
        /// 电源输出电压与限流电流设置
        /// </summary>
        /// <param name="volt">电压值</param>
        /// <param name="curr">电流值</param>
        public void powerSetting(double volt,double curr)
        {
            int vt, ct;
            byte[] byVolt = { 0x00, 0x10, 0x00, 0x00, 0x00, 0x01, 0x02, 0x00, 0x00 };
            byte[] byCurr = { 0x00, 0x10, 0x00, 0x01, 0x00, 0x01, 0x02, 0x00, 0x00 };
            vt = (int) (volt * 100);
            byVolt[7] = (byte)((vt & 0xFF00)>>8);
            byVolt[8] = (byte)(vt & 0x00FF);
            ct = (int)(curr * 100);
            byCurr[7] = (byte)((ct & 0xFF00) >> 8);
            byCurr[8] = (byte)(ct & 0x00FF);
            powerWriteRead(byCurr);
            powerWriteRead(byVolt);
        }
    }
}