dlg7290.cpp

周立功WinCE光盘资料

// DLG7290.cpp : implementation file
//

#include "stdafx.h"
#include "Magic2410.h"
#include "DLG7290.h"
#include "I2C.h"

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

extern HANDLE hFileIIC;
extern CRITICAL_SECTION critical_section_iic;

#define I2C_ADDR_7290			 0x70		 /* ZLG7290 的I2C地址 */
/////////////////////////////////////////////////////////////////////////////
// DLG7290 dialog


DLG7290::DLG7290(CWnd* pParent /*=NULL*/)
	: CDialog(DLG7290::IDD, pParent)
{
	//{{AFX_DATA_INIT(DLG7290)
	m_strDisp = _T("");
	m_strKeyValue = _T("");
	m_strBusFreq = _T("");
	//}}AFX_DATA_INIT
	
}


void DLG7290::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(DLG7290)
	DDX_Text(pDX, IDC_DISP, m_strDisp);
	DDX_Text(pDX, IDC_KEY_VALUE, m_strKeyValue);
	DDX_Text(pDX, IDC_BUS_FREQ, m_strBusFreq);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(DLG7290, CDialog)
	//{{AFX_MSG_MAP(DLG7290)
	ON_BN_CLICKED(IDC_START_SCAN, OnStartScan)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// DLG7290 message handlers

void DLG7290::OnStartScan() 
{
	// TODO: Add your control notification handler code here
	CButton *Key;
	Key = (CButton *)GetDlgItem(IDC_START_SCAN);
	BYTE I2cSla = I2C_ADDR_7290, divid = 3;
	BYTE buf[8] = {0x0A,0x00,0x01, 0x04,0x02,0x0C, 0x03,0x05 };	 // S3C2410A //
	DWORD actlen, ret, speed;

	UpdateData(TRUE);
	if (hFileIIC == NULL)
	{
		MessageBox(_T("I2C 驱动未打开!"));
		Key->SetWindowText(_T("开始扫描"));		/* 按键标题保持不变 */
		Key->SetCheck(0);						/* 按键保持为未按下 */
		return;
	}

	// 设置 I2C 从机器件地址
	ret = ::DeviceIoControl(hFileIIC, IOCTL_SET_I2C_SLAVE, &I2cSla, 1, 
							NULL, 0, NULL, NULL);
	if (ret != TRUE)
	{
		CloseHandle(hFileIIC);
		hFileIIC = NULL;
		MessageBox(_T("设置 I2C 从机地址失败!"));
		return;
	}

	// 设置 I2C 总线速度
	ret = ::DeviceIoControl(hFileIIC, IOCTL_SET_SPEED_DIV, &divid, 1, 
							&speed, 1, &actlen, NULL);
	if (ret != TRUE)
	{
		CloseHandle(hFileIIC);
		hFileIIC = NULL;
		MessageBox(_T("设置 I2C 总线速度失败!"));
		return;
	}

	m_strBusFreq.Format(_T("%dHz"), speed);			/* 显示I2C总线频率 */
	UpdateData(FALSE);
    zlg7290_disp(buf, 8);							/* 显示 S3C2410A */	
	UINT state = Key->GetState();
	if ((state & 0x0003) == 1)					/* 按键按下 */
	{
		Key->SetWindowText(_T("停止扫描"));		/* 按键标题改变, 提示下次操作 */
		SetTimer(1, 20, NULL);					/* 启动定时器, 进行采样 */
	}
	else										/* 按键弹起 */
	{
		Key->SetWindowText(_T("开始扫描"));		/* 按键标题复原 */
		KillTimer(1);							/* 取消定时 */
	}	
}


void DLG7290::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	ushort key;
	char pcharbuff[8];
	BYTE pdispbuff[8];
	DWORD len;
	BYTE I2cSla = I2C_ADDR_7290;
	DWORD ret;

	UpdateData(TRUE);
	len = m_strDisp.GetLength();
	if (len > 8)	len = 8;

	LPTSTR pStr = m_strDisp.GetBuffer(len);
	if (len <= 8)
	{	
		// 将 Unicode 的字符转换为字节型
		WideCharToMultiByte(CP_ACP, 0, pStr, len, pcharbuff, len, NULL, NULL);
		if (strtodata((BYTE *)pcharbuff, pdispbuff, len) != 0)		/* ASCII转换为整数 */
		{
			KillTimer(1);
			MessageBox(_T("输入字符含有非16进制数!"));
			goto ERR;
		}
	}

	// 设置 I2C 从机器件地址
	EnterCriticalSection(&critical_section_iic);
	ret = ::DeviceIoControl(hFileIIC, IOCTL_SET_I2C_SLAVE, &I2cSla, 1, 
							NULL, 0, NULL, NULL);
	if (ret != TRUE)
	{
		CloseHandle(hFileIIC);
		hFileIIC = NULL;
		KillTimer(1);
		MessageBox(_T("设置 I2C 从机地址失败!"));
		return;
	}

	if (len == 8)
		zlg7290_disp((BYTE *)pdispbuff, 8);							/* 驱动数码管显示 */

	if (zlg7290_getkey(&key) != 0)									/* 读取按键键值 */
	{
		KillTimer(1);
		MessageBox(_T("读取键值失败!"));
		goto ERR;
	}
        
	if (zlg7290_sndcmd(0x70, 1 << (key - 1)) != 0)					/* 闪烁 */
    {
		KillTimer(1);
		MessageBox(_T("控制闪烁失败!"));
 		goto ERR;
	}

	LeaveCriticalSection(&critical_section_iic);
	key &= 0X1F;
	m_strKeyValue.Format(_T("0x%x"), key);							/* 显示当前按键键值 */
	
	int i;
	for(i = 0; i < 16; i++)
		((CStatic*)GetDlgItem(IDC_STATIC_KEY0+i))->SetBitmap (m_bitmap[0]);
	
	if((key != 0) && (key < 17))
		((CStatic*)GetDlgItem(IDC_STATIC_KEY0+key-1))->SetBitmap (m_bitmap[1]);
	
	UpdateData(FALSE);
	CDialog::OnTimer(nIDEvent);
	return;
	
ERR:																/* 出错处理代码 */
	LeaveCriticalSection(&critical_section_iic);
	CButton *Key = (CButton *)GetDlgItem(IDC_START_SCAN);
	Key->SetWindowText(_T("开始扫描"));								/* 按键标题保持不变 */
	Key->SetCheck(0);												/* 按键保持为未按下 */
	CDialog::OnTimer(nIDEvent);
}

/***************************************************************
函数名称: chartoint()
功能描述: 将一个ASCII码转换为一个整数 
输入参数: chr:   要转换的字符
输出参数: cint:  储存转换过来的数据
返	  回: 0: 成功		1: 失败
***************************************************************/
int DLG7290::chartoint(unsigned char chr, unsigned char *cint)
{
	unsigned char cTmp;
	cTmp = chr - 48;
	if(cTmp >= 0 && cTmp <= 9)
	{
		*cint = cTmp;
		return 0;
	}

	cTmp = chr - 65;
	if(cTmp >= 0 && cTmp <= 5)
	{
		*cint = (cTmp + 10);
		return 0;
	}

	cTmp = chr - 97;
	if(cTmp>=0 && cTmp <= 5)
	{
		*cint = (cTmp+10);
		return 0;
	}
	return 1;
}


/***************************************************************
函数名称: strtodata()
功能描述: 将一串ASCII码转换为相应的整数 
输入参数: unsigned char str:   要转换的字符
		  int len:   长度
输出参数: unsigned char data:  储存转换过来的数据
返	  回: 0: 成功   1: 失败
***************************************************************/
int DLG7290::strtodata(unsigned char *str, unsigned char *data, int len)
{
	unsigned char cTmp = 0;
	int i = 0;

	for(int j = 0;j < len; j++)
	{
		if(chartoint(str[i++], &cTmp))
			return 1;
		data[j] = cTmp;
	}

	return 0;
}

/*********************************************************************************************************
** Function name: zlg7290_disp
** Descriptions:  control zlg7290 to driver led
**                控制zlg7290驱动led
** Input: 		  unsigned char *buf: display buffer
				  unsigned char num: display number
** Output: 		  NULL
** Created by:    Ming Yuan Zheng 郑明远 
** Created Date:  2006-01-09 
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void DLG7290::zlg7290_disp(unsigned char *buf, unsigned char num)
{
	unsigned char i;
    unsigned char temp[3];
	DWORD actlen;

    for(i=0; i<num; i++)
    {
        temp[0] = 0x07;
        temp[1] = 0x60 + i;
        temp[2] = *buf;
        buf++;
        ::WriteFile(hFileIIC, temp, 3, &actlen, NULL);
        Sleep(5);
    }
}

/*********************************************************************************************************
** Function name: zlg7290_getkey
** Descriptions:  get the key value from zlg7290
**                从zlg7290取得按键键值	
** Input: 		  unsigned short *key:  the gotten key value
** Output: 		  0 : OK   -1: fail 
** Created by:    Ming Yuan Zheng 郑明远 
** Created Date:  2006-01-09 
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
int DLG7290::zlg7290_getkey(unsigned short *key)
{

	unsigned char temp[2];
	DWORD actlen;

    temp[0] = 1;
    temp[1] = 0;
	if (::WriteFile(hFileIIC, temp, 1, &actlen, NULL) != TRUE)	/* 发送子地址 */
		return -1;

	if (::ReadFile(hFileIIC, temp, 2, &actlen, NULL) != TRUE)	/* 读取键值 */
		return -1;

	Sleep(2);
	*key = temp[0] + (temp[1] * 256);
	return 0;
}

/*********************************************************************************************************
** Function name: zlg7290_sndcmd
** Descriptions:  send command to zlg7290
**                向zlg7290发送命令
** Input: 		  unsigned char dat1: command word 1
				  unsigned char dat2: command word 2
** Output: 		  0 : OK   -1: fail 
** Created by:    Ming Yuan Zheng 郑明远 
** Created Date:  2006-01-09 
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
int DLG7290::zlg7290_sndcmd(unsigned char dat1, unsigned char dat2)
{
	unsigned char temp[3];
	DWORD actlen;

    temp[0] = 0x07;
    temp[1] = dat1;
    temp[2] = dat2;
   
	if (::WriteFile(hFileIIC, temp, 3, &actlen, NULL) != TRUE)
		return -1;
    	
    Sleep(1);
    return 0;
}

BOOL DLG7290::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	m_strKeyValue = "无键按下";			// 显示"无按键按下"
	m_strBusFreq = "0Hz";				// 总线时钟为0
	m_strDisp = "87654321";				// 数码管默认显示
	m_bitmap[0].LoadBitmap(IDB_BITMAP_BLUE);
	m_bitmap[1].LoadBitmap(IDB_BITMAP_RED);
	UpdateData(FALSE);				// 更新显示
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}