mydialog.cpp

很好的arm 教学实验 方便大家接触硬件

#include "mydialog.h"

#include <qpushbutton.h>
#include <qmessagebox.h>

MyDialog::MyDialog(QWidget * parent, const char * name, bool modal, WFlags f)
    :MyDialogUi(parent,name,modal,f)
{

    connect(buttonSend,SIGNAL(clicked()),this,SLOT(senddata_slot()));
    connect(buttonStop,SIGNAL(clicked()),this,SLOT(stopsend_slot()));

    devfd = -1;
    memset((void *)buff,0,sizeof(char)*160);
}


MyDialog::~MyDialog()
{

}

void MyDialog::senddata_slot()
{

    devfd = open(DEVSTR, O_RDWR);
    if (devfd == -1)
    {
        printf("open serial error:%s\n", DEVSTR);
        QMessageBox::information(this,tr("error"),tr("open serial error"));
        return ;//return fd;
    }

    struct termios options;
    
    bzero(&options, sizeof(options));
    options.c_cflag |= B9600;
    cfsetispeed(&options, B9600);    
    cfsetospeed(&options, B9600); 
    options.c_cflag |= CREAD | CLOCAL;
    options.c_cflag &= ~CSIZE;
    options.c_cflag |= CS8;
    options.c_oflag = 0;
    options.c_lflag = 0;
    options.c_cc[VTIME] = 150;
    options.c_cc[VMIN] = 0;
    tcflush(devfd, TCIFLUSH);
    tcsetattr(devfd, TCSANOW, &options);
    while (1)
    {
        char buffer[1];
        //fd= openserial( comport );
        buffer[0] =  0xff;
        buffer[1] =  0xaa;
        buffer[2] =  0xbb;
        buffer[3] =  0xcc;
        
        write(devfd, buffer, 4 );
    }
    
}

void MyDialog::stopsend_slot()
{
    //if(devfd>0) ::close(devfd);
    if(devfd==0) ::close(devfd);
}