WINCE简单LED应用程序的编写

转载

xingyuan1hao 2022-12-08 19:20:58

文章标签 WINCE 驱动开发应用程序 #include 寄存器 文章分类 虚拟化云计算

这是应用程序的编写，其实也不是只是在应用程序编写的过程中要注意的一个问题。曾经我就是没有注意这个问题花了我不少的时间。共勉吧！

在应用程序最主要的就是 CreateFile 的使用。

m_hLed = CreateFile

_T ("LED1:"

GENERIC_READ |GENERIC_WRITE

NULL

OPEN_EXISTING

FILE_ATTRIBUTE_NORMAL

NULL

注意在LED1

在进行LED 操作的时候，WriteFile

调用WriteFile 时传的参数如下所示：

WriteFile (m_hLed , &led_info , sizeof (LED_INFO ), &dwWrite , NULL

m_hLed: CreateFile 返回的句柄。

Led_info: LED_INFO 结构体。

typedef struct

{

unsigned char ucNum

unsigned char bStatus

}LED_INFO , *PLED_INFO

dwWrite : 返回的写入的字节数。

界面确实弄得不BEAUTIFUL

在点击 LED1_ON_OFF 的时候对应的函数 :OnBnClickedLed1

其它的LED 也是一样。

上次通过应用程序在WINCE操作系统下实现了LED灯的点亮与熄灭的控制，这里只是对寄存器进行一次性操作，如果需要寄存器时刻的变化，那需要怎么做呢？这里不同于简单的单片机，做个死循环，让寄存器不断的变化就行了，因为在WINCE底下是多任务系统。这样就涉及到了线程问题。

#include "stdafx.h"
#include "GPIOControl.h"
#include "GPIOControlDlg.h"
#include "GPIO.h"

HANDLE hFile=INVALID_HANDLE_VALUE;

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

DWORD g_dwThreadId = 0;
BOOL g_bOpen = TRUE;

/
// CGPIOControlDlg dialog

CGPIOControlDlg::CGPIOControlDlg(CWnd* pParent )
: CDialog(CGPIOControlDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CGPIOControlDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CGPIOControlDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CGPIOControlDlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CGPIOControlDlg, CDialog)
//{{AFX_MSG_MAP(CGPIOControlDlg)
ON_BN_CLICKED(IDC_OPEN_GPIO, OnOpenGpio)
ON_BN_CLICKED(IDC_LED_OFF, OnLedOff)
ON_BN_CLICKED(IDC_CLOSE_GPIO, OnCloseGpio)
ON_BN_CLICKED(IDC_LED_ON, OnLedOn)
ON_BN_CLICKED(IDC_FLOWLED, OnFlowled)
ON_BN_CLICKED(IDC_SPECLED, OnSpecled)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/
// CGPIOControlDlg message handlers

BOOL CGPIOControlDlg::OnInitDialog()
{
CDialog::OnInitDialog();

// Set the icon for this dialog.  The framework does this automatically
//  when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE);   // Set big icon
SetIcon(m_hIcon, FALSE);  // Set small icon

CenterWindow(GetDesktopWindow()); // center to the hpc screen

// TODO: Add extra initialization here

return TRUE; // return TRUE unless you set the focus to a control
}

//打开GPIO驱动,这里LED0表示需要调用的驱动的名字。如果出错则无法打开驱动！
void CGPIOControlDlg::OnOpenGpio()
{
hFile=CreateFile(TEXT("LED0:"),GENERIC_READ | GENERIC_WRITE,0,
      NULL,OPEN_EXISTING,0,0);
if(hFile==INVALID_HANDLE_VALUE)
{
  MessageBox(_T("打开GPIO驱动失败！"));
}
else
{
  MessageBox(_T("打开GPIO驱动成功！"));
}
}

//关闭GPIO驱动
void CGPIOControlDlg::OnCloseGpio()
{
if(hFile!=INVALID_HANDLE_VALUE)
{
  CloseHandle(hFile);
  MessageBox(_T("关闭GPIO驱动成功！"));
}
else
{
  MessageBox(_T("关闭GPIO驱动失败！"));
}
}

//
void CGPIOControlDlg::OnLedOff()
{
BOOL ret;
ret=::DeviceIoControl(hFile,IO_CTL_LED_ALL_OFF,NULL,
  1,NULL,0,NULL,NULL);
if(ret!=TRUE)
{
  MessageBox(_T("关闭LED失败！"));
  MessageBox(_T("请打开GPIO驱动！"));
}
g_bOpen = FALSE;
}

void CGPIOControlDlg::OnLedOn()
{
BOOL ret;
ret=::DeviceIoControl(hFile,IO_CTL_LED_ALL_ON,NULL,
  1,NULL,0,NULL,NULL);
if(ret!=TRUE)
{
  MessageBox(_T("点亮LED失败！"));
  MessageBox(_T("请打开GPIO驱动！"));
}
}

//流水灯线程函数
DWORD WINAPI FlowThreadFunc(HANDLE Thread)
{
static BOOL bCount = 0;
while(g_bOpen)
{
  if(hFile==INVALID_HANDLE_VALUE)
  {
   return 0;
  }
  switch(bCount)
  {
  case 0:
   DeviceIoControl(hFile,IO_CTL_LED_1_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 1:
   DeviceIoControl(hFile,IO_CTL_LED_2_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 2:
   DeviceIoControl(hFile,IO_CTL_LED_3_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 3:
   DeviceIoControl(hFile,IO_CTL_LED_4_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 4:
   DeviceIoControl(hFile,IO_CTL_LED_4_OFF,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 5:
   DeviceIoControl(hFile,IO_CTL_LED_3_OFF,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 6:
   DeviceIoControl(hFile,IO_CTL_LED_2_OFF,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 7:
   DeviceIoControl(hFile,IO_CTL_LED_1_OFF,NULL,
    1,NULL,0,NULL,NULL);
   break;
  default:
   break;
  }
  bCount ++;
  if(bCount>7)
  {
   bCount = 0;
  }
  Sleep(500);
}
return 0;
}

//花样灯线程函数
DWORD WINAPI SpecThreadFunc(HANDLE Thread)
{
static BOOL bCount = 0;
while(g_bOpen)
{
  if(hFile==INVALID_HANDLE_VALUE)
  {
   return 0;
  }
  DeviceIoControl(hFile,IO_CTL_LED_ALL_OFF,NULL,
    1,NULL,0,NULL,NULL);//熄灭所有灯
  switch(bCount)
  {
  case 0: //点亮LED1,4
   DeviceIoControl(hFile,IO_CTL_LED_1_ON,NULL,
    1,NULL,0,NULL,NULL);
   DeviceIoControl(hFile,IO_CTL_LED_4_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 1://点亮LED2,3
   DeviceIoControl(hFile,IO_CTL_LED_2_ON,NULL,
    1,NULL,0,NULL,NULL);
   DeviceIoControl(hFile,IO_CTL_LED_3_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 2://点亮LED1,4
   DeviceIoControl(hFile,IO_CTL_LED_1_ON,NULL,
    1,NULL,0,NULL,NULL);
   DeviceIoControl(hFile,IO_CTL_LED_4_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 3://全灭
   DeviceIoControl(hFile,IO_CTL_LED_ALL_OFF,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 4://全亮
   DeviceIoControl(hFile,IO_CTL_LED_ALL_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 5://全灭...
   DeviceIoControl(hFile,IO_CTL_LED_ALL_OFF,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 6://全亮...
   DeviceIoControl(hFile,IO_CTL_LED_ALL_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 7://全灭
   DeviceIoControl(hFile,IO_CTL_LED_ALL_OFF,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 8://全亮
   DeviceIoControl(hFile,IO_CTL_LED_ALL_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 9://LED1,3亮
   DeviceIoControl(hFile,IO_CTL_LED_1_ON,NULL,
    1,NULL,0,NULL,NULL);
   DeviceIoControl(hFile,IO_CTL_LED_3_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  case 10://LED2,4亮
   DeviceIoControl(hFile,IO_CTL_LED_2_ON,NULL,
    1,NULL,0,NULL,NULL);
   DeviceIoControl(hFile,IO_CTL_LED_4_ON,NULL,
    1,NULL,0,NULL,NULL);
   break;
  default:
   break;
  }
  bCount ++;
  if(bCount>11)
  {
   bCount = 0;
  }
  Sleep(500);
}
return 0;
}