請先看『使用說明』

From LEXWiKi

The Sample code source you can download from

Source file: LCM_Keypad_SDK_v1.0w_src.rar

Binary file: LCM_Keypad_SDK_v1.0w_bin.rar

KeyPad Define

key    recrived value
---------------------
key1       2
key2       4
key3       5
key4       7
key5       A
key6       C

How to use the DEMO application

1. COM Port selection
2. Setting the text which you want to print to LCM from key1~key6
3. Setting that print the text to upline or lowline by check the checkbox
4. After setting , click OK
5. Press the key on the keypad , the text you set will print to LCM
   
   

Sample code Introduction

flow chart

define the received value of each key

#define KEYPAD1		'2'
#define KEYPAD2		'4'
#define KEYPAD3		'5'
#define KEYPAD4		'7'
#define KEYPAD5		'A'
#define KEYPAD6		'C'

set COM port and open

void CLCM_Keypad_SDK_v10wDlg::SetCOM(int port)
{
	//set COM port and open
	m_comm.put__CommPort(port);
	m_comm.put_Settings(_T("9600, n, 8, 1")); 
	m_comm.put_InBufferSize(1024);   
	m_comm.put_OutBufferSize(1024);   
	m_comm.put_InputMode(0);                  
	m_comm.put_InputLen(0); 
	m_comm.put_RThreshold(1);
 
	if(!m_comm.get_PortOpen()) 
		m_comm.put_PortOpen(TRUE);

	m_comm.get_Input();
}

Close serial port

m_comm.put_PortOpen(FALSE);

send data

int PortSend(int fdcom, char *data, int datalen)
{
	int len = 0;

	len = write(fdcom, data, datalen);
	if(len == datalen){
		return (len);
	}
	else{
		tcflush(fdcom, TCOFLUSH);
		return -1;
	}
} 

receive data

int PortRecv(int fdcom, char *data, int datalen)
{
 	int readlen, fs_sel = 0;
	fd_set	fs_read;
	struct timeval tv_timeout;

	FD_ZERO(&fs_read);
	FD_SET(fdcom, &fs_read);
	tv_timeout.tv_sec = TIMEOUT_SEC(datalen, baudrate);
	tv_timeout.tv_usec = TIMEOUT_USEC;

	fs_sel = select(fdcom+1, &fs_read, NULL, NULL, &tv_timeout);
	if(fs_sel){
		readlen = read(fdcom, data, datalen);
		return(readlen);
	}
	else{
		return(-1);
	}
	return (readlen);
} 

Set COM Port Device(COM1~COM6)

SetCOM(1);
SetCOM(2);
SetCOM(3);
SetCOM(4);
SetCOM(5);
SetCOM(6);

Use OnComm to receive the value of key

void CLCM_Keypad_SDK_v10wDlg::OnCommMscomm1()
{
	//change COleVariant type to String type
	COleVariant myVar;
	VARIANT var_in; 
	myVar.Attach (m_comm.get_Input());  //receive the data from keypad
	var_in = myVar;
	var_in.vt = VT_BSTR;
	_bstr_t bstr_t(var_in.bstrVal);
	CString keypad_input((char*)bstr_t); 
 
	//recognize the key , and send the text to LCM
	if ( keypad_input == KEYPAD1 )
	{
	}
	if ( keypad_input == KEYPAD2 )
	{
	}
	if ( keypad_input == KEYPAD3 )
	{
	}
	if ( keypad_input == KEYPAD4 )
	{
	}
	if ( keypad_input == KEYPAD5 )
	{
	}
	if ( keypad_input == KEYPAD6 )
	{
	}
}

send text to LCM

char szSendup[30] = {0x1b, 0x51, 0x41};
char szSenddown[30] = {0x1b, 0x51, 0x42};

sprintf(szSendup+3, "%s\r", text1);          //send to upline
m_comm.put_Output(COleVariant(szSendup));

sprintf(szSenddown+3, "%s\r", text1);        //send to low line
m_comm.put_Output(COleVariant(szSenddown));