Mini2440 FriendlyARM WinCE 6 LED Driver Test (1)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace LED_CSharp
{
    public partial class Form1 : Form
    {
        const UInt32 OPEN_EXISTING = 3;
        const UInt32 GENERIC_READ = 0x80000000;
        const UInt32 GENERIC_WRITE = 0x40000000;
        const Int32 INVALID_HANDLE_VALUE = -1;

        const UInt32 LED_ON = 0x01;
        const UInt32 LED_OFF = 0x06;

       
        private IntPtr hPort;

        [DllImport("coredll.dll")]
        public static extern IntPtr CreateFile(String lpFileName, UInt32 dwDesiredAccess, UInt32 dwShareMode, IntPtr lpSecurityAttributes, UInt32 dwCreationDisposition, UInt32 dwFlagsAndAttributes, IntPtr hTemplateFile);
        [DllImport("coredll.dll")]
        public static extern bool DeviceIoControl(IntPtr hDevice, UInt32 dwIoControlCode, Byte[] lpInBuffer, UInt32 nInBufferSize, Byte[] lpOutBuffer, UInt32 nOutBufferSize, UInt32 lpBytesReturned, IntPtr lpOverlapped);


        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            hPort = CreateFile("LED1:", GENERIC_READ | GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero);
            if (hPort == (IntPtr)INVALID_HANDLE_VALUE)
            {
                MessageBox.Show("Open Led Driver Fail");
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            DeviceIoControl(hPort, LED_ON, null, 0, null,0,0,IntPtr.Zero);
        }  

        private void button4_Click(object sender, EventArgs e)
        {
            DeviceIoControl(hPort, LED_OFF, null, 0, null,0,0,IntPtr.Zero);
        }
    }
}PS.#define IO_CTL_LED_1_ON 0x01
#define IO_CTL_LED_2_ON 0x02
#define IO_CTL_LED_3_ON 0x03
#define IO_CTL_LED_4_ON 0x04
#define IO_CTL_LED_ALL_ON 0x05
#define IO_CTL_LED_1_OFF 0x06
#define IO_CTL_LED_2_OFF 0x07
#define IO_CTL_LED_3_OFF 0x08
#define IO_CTL_LED_4_OFF 0x09
#define IO_CTL_LED_ALL_OFF 0x0a

PS.不知道這樣的Source Code是值多少錢 找都找不到, 連原廠都不願意給 搞不懂! 還是搞得不太懂 不過反正Work了