.net micro framework的入门例程-点灯神话-8.串口接收字符D即发送LED闪烁日志

来源：互联网发布：windows设置ntp客户端编辑：程序博客网时间：2024/06/06 00:58

学学怎么使用串口接收

using System;

using System.IO;
using System.Text;
using System.IO.Ports;
using System.Threading;
using System.Collections;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;

using GHIElectronics.Gadgeteer;
namespace my_LED
{
    public class my_led
    {
        static OutputPort lampOutport = new OutputPort((Cpu.Pin)GHI.Hardware.G120.Pin.P0_4,false);
        static InterruptPort switchInterrupt = new InterruptPort(
                                    (Cpu.Pin)GHI.Hardware.G120.Pin.P2_10,
                                    false,
                                    Port.ResistorMode.PullUp,
                                    Port.InterruptMode.InterruptEdgeBoth);
       // static private FlashlightUse[] FlashlightUseLog;
        static DateTime switchedOn;
        private static ArrayList UseLog = new ArrayList();
        static SerialPort Uart1 = new SerialPort("COM1", 115200);
      public static void Main()
        {
            // 开按键中断
            switchInterrupt.OnInterrupt += new NativeEventHandler(switchInterrupt_OnInterrupt);
            //开定时器
            System.Threading.Timer timer = new System.Threading.Timer(
                                            new TimerCallback(flashTick),
                                            null,
                                            5000,
                                            5000);

            //开串口
            Uart1.Open();
            // create a string
            string counter_string = "Hello micro framework\r\n";
            // convert the string to bytes
            byte[] buffer = System.Text.Encoding.UTF8.GetBytes(counter_string);
            // send the bytes on the serial port
            Uart1.Write(buffer, 0, buffer.Length);
            Uart1.Flush();
            monitorLogRequests();
          //System.Threading.Thread serialThread = new System.Threading.Thread(monitorLogRequests);

           // System.Threading.Thread.Sleep(System.Threading.Timeout.Infinite);
        }

        static void switchInterrupt_OnInterrupt(uint data1, uint data2, DateTime time)
        {
            Monitor.Enter(switchInterrupt);
            switch (data2)
            {
                case 0: lampOutport.Write(true); break;
                case 1: lampOutport.Write(false); break;
                default: break;
            }
            Monitor.Exit(switchInterrupt);
        }

        private static void monitorLogRequests()
        {
            byte[] buffer = new byte[1];
            while (true)
            {
                int count = Uart1.Read(buffer, 0, 1);

                if (count > 0)
                {
                    if (buffer[0] == 'D')
                    {
                        sendDataList();
                    }
                }
            }
        }

        private static void flashTick(object o)
        {

            if (!switchInterrupt.Read())
            {
                return;
            }

            lampOutport.Write(true);
            switchedOn = DateTime.Now;

            System.Threading.Thread.Sleep(100);

            System.Threading.Monitor.Enter(switchInterrupt);
            if (switchInterrupt.Read())
            {
                lampOutport.Write(false);
                FlashlightUse record = new FlashlightUse(switchedOn, DateTime.Now);
                UseLog.Clear();

                UseLog.Add(record);
           //     sendDataList();
            }
            System.Threading.Monitor.Exit(switchInterrupt);
        }

        static void sendDataList()
        {
            foreach (FlashlightUse logItem in UseLog)
            {
                byte[] buffer = System.Text.Encoding.UTF8.GetBytes(logItem.ToString());
                Uart1.Write(buffer, 0, buffer.Length);
                byte[] buffer1 = System.Text.Encoding.UTF8.GetBytes("\r\n");
                Uart1.Write(buffer1, 0, buffer1.Length);
            }
            Uart1.Flush();
        }
    }

    public class FlashlightUse
    {
        public DateTime switchedOn; // 点亮时间
        public TimeSpan litDuration; // 持续时间

        public override string ToString()
        {
            return "On : " + switchedOn.ToString() + " for : " + litDuration.ToString();
        }

        public FlashlightUse(DateTime inSwitchedOn, DateTime inSwithedOff)
        {
            switchedOn = inSwitchedOn;
            litDuration = inSwithedOff.Subtract(switchedOn);
        }
        public FlashlightUse(DateTime inSwitchedOn, TimeSpan inLitDuration)
        {
            if (inLitDuration.Ticks < 0)
            {
                throw new Exception("Invalid FlashlightUse timespan");
            }
            switchedOn = inSwitchedOn;
            litDuration = inLitDuration;
        }
    }

}

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